84 results about "Drill hole" patented technology

The invention discloses a method for fracturing a coal seam by employing high-pressure gas. The method comprises the following steps: (1) tipsily drilling from a lower floor roadway of the coal seam to an upper coal seam; (2) inserting three pipes into a drill hole, and injecting polyurethane which is 20-50cm in thickness into the drill hole; (3) injecting cement mortar into the drill hole from a first grouting pipe, and shutting off a first which is arranged at the rear end of the first grouting pipe until the cement mortar overflows from a second grouting pipe; (4) injecting plugging mucilage glue containing particulate matters into the drill hole by virtue of the second grouting pipe after 12-24 hours; (5) injecting a high-pressure gas of which the pressure is 30-60MPa into the drill hole through a fracturing extraction pipe. According to the method disclosed by the invention, the plugging mucilage glue containing particulate matters is pressed into a pore fracture of a rock section under the effect of air pressure; the high-pressure gas is plugged by virtue of the mucilage glue; the problem of air leakage of the high-pressure gas in the coal seam fracturing process is effectively solved; the gas pressure of the fractured coal seam reaches the cracking pressure of the coal seam.

The invention discloses a coal seam anti-reflection method for circular damage by using cold shock of liquid nitrogen and phase change gas. First, a layer penetrating drill hole is drilled in a roadway to a coal seam through a rock layer; in the layer penetrating drill hole, the coal seam is cut to form multiple cracks perpendicular to the layer penetrating drill hole; a liquid nitrogen injectingpipe and an exhaust pipe extend into the layer penetrating drill hole; and the exhaust pipe is connected with two gas pipelines separately provided with a safety valve and a spherical valve. The spherical valve performs the on-off control over the emission of nitrogen when the liquid nitrogen is injected in the layer penetrating drill hole; after the spherical valve is closed, a threshold of the safety valve is set, so that the safety valve controls the pressure in the layer penetrating drill hole; and after the air pressure in the layer penetrating drill hole exceeds the threshold each time,the safety valve is opened to discharge internal nitrogen for pressure relief, and the safety valve is automatically closed after the pressure relief. The method can guarantee that the liquid nitrogenis quickly and continuously injected in the layer penetrating drill hole, and meanwhile, cracks of coal masses are caused by using cold shock of the liquid nitrogen, the expansion pressure of the phase change gas and the frost heaving pressure of water in the cracks to effectively guarantee the anti-reflection effect.

The invention relates to a rapid clamping and drilling mould for machining of a side hole of round steel. The rapid clamping and drilling mould for machining of the side hole of the round steel comprises two clamping assemblies and a positioning rod, wherein the two clamping assemblies are used for clamping the round steel, each clamping assembly comprises an upper clamping body and a lower clamping body, each upper clamping body comprises a connecting part and a clamping part, a connecting screw hole and a positioning pin hole are formed in each connecting part, an isosceles-trapezoid-shaped opening is formed in each clamping part, a through drill hole is formed in the top of each opening, and a drill jig sleeve is arranged in each drill hole; the upper clamping body and the lower clamping body of each clamping assembly are of the same structure and are combined together, the screw hole and the positioning pin hole of each upper clamping body correspond to a screw hole and a positioning pin hole of the corresponding lower clamping body, connecting bolts are arranged in the screw holes in a screwed mode, and positioning pins are inserted in the positioning pin holes; a round steel clamping cavity is formed after the upper clamping bodies and the lower clamping bodies are combined together. According to the rapid clamping and drilling mould for machining of the side hole of the round steel, the round steel is clamped in a one-time mode through the drilling mold, machining of the whole hole is achieved, drilling efficiency and drilling quality are improved, and the coaxiality of drilled holes and the distances between adjacent holes are guaranteed; deflected holes and eccentric holes are avoided, and product quality is improved.

The invention discloses a system and a method for monitoring a dynamic disaster of a coal mine with fiber bragg gratings. According to the system and the method, the fiber bragg gratings (1) are distributed in or on the surface of rod bodies of anchor rods (2); the anchor robs (2) are inserted into two uppers of a roadway of the coal mine or other effective positions by drilling holes; and optical connector (11) capable of being connected with the external are introduced from the tails of the anchor rods (2), and connected with fiber bragg grating network demodulation instruments (5) which are connected to a testing computer (6) to form a testing system for monitoring the dynamic strain. With the adoption of the system and the method disclosed by the invention, the dynamic disaster can be relatively accurately forecasted, and relatively high performance of preventing outside interference can be achieved; and the method is an intrinsic safety testing method.

The invention relates to the technical field of highway construction, and discloses a soil sampling device for a highway engineering road and a using method thereof. The soil sampling device for the highway engineering road comprises a base and a sampling barrel; a supporting plate is fixedly installed on one side of the top of the base; the bottom of the sampling barrel is open; a sleeve plate is fixedly installed on one side of the sampling barrel; the sleeve plate sleeves the outer side of the supporting plate in a sliding mode; a motor is fixedly mounted at the top of the sampling barrel; a circular hole is formed in the top of the sampling barrel; a cylinder is rotatably mounted in the circular hole; a square hole is formed in the top end of the cylinder; a square rod is slidably mounted in the square hole; and a drill bit is arranged at the bottom end of the square rod. The device is reasonable in design, the drill bit is driven to rotate at a high speed and vibrate up and down while moving downwards at a low speed to drill holes in the ground, a hard soil layer can be conveniently drilled, manpower consumption is reduced, and drilled soil is conveyed into a collecting frame to be collected and stored, so automatic sampling of the soil is achieved, and the sampling work efficiency is improved.

The invention relates to the field of mine grouting, in particular to a mine grouting technology and device with a hole opening closed and circulation performed in a hole. According to the technology, an advanced mode is adopted for performing segmented drilling and grouting from top to bottom till a preset drilling depth is achieved, and finally, the drilled hole is sealed through thick slurry; the drilling and the grouting of each segment subjected to grouting include the steps that a, after the hole is drilled and washed, the top end of a slurry jet pipe is connected with an active drill pipe of a drill rig and lowered into the hole, then, the hole opening is closed, a high-pressure hose connected with the active drill pipe is connected with a flow meter sequentially through a slurry feeding pipe, a grouting pump and a tee joint so that a slurry inlet pipe can be formed, and a hole opening closing device is connected with a slurry returning pipe sequentially through a pressure gage, a pressure meter and a high-pressure slurry returning valve so that a slurry returning pipeline can be formed; b, the drilled hole is washed, then a pump-in test is performed and intermittent grouting is performed. The mine grouting technology and device with the hole opening closed and circulation performed in the hole are good in grouting effect and suitable for grouting of holes in different hole depths.

The invention discloses a cyclic replacement grouting process of a hole drilling fixing pipe. The cyclic replacement grouting process is divided into hole drilling, cyclic grouting and cyclic replacement of thin slurry by thick slurry. A device adopting the process is further provided and comprises a hole drilling machine, a grouting pump, a mixing barrel, a slurry sucking pipeline, a grouting pipeline, a slurry return pipeline and a hole sealing device; and a hole drilling machine pipeline is connected with the grouting pump, one end of the grouting pump is connected with the mixing barrel through the slurry sucking pipeline, the other end of the grouting pump is connected with an inlet of the hole sealing device through the grouting pipeline, and an outlet of the hole sealing device is connected with the mixing barrel through the slurry return pipeline. The cyclic replacement grouting process of the hole drilling fixing pipe has the beneficial effects that by adopting cyclic grouting, grouting is exchanged for one time through the grouting pipeline and the slurry return pipeline, so that slurry in a hole is evenly distributed, then through the process that the thin slurry is cyclically replaced by the thick slurry, so that the slurry in the hole is replaced from the normal ratio slurry into the thick slurry, the influence of shrinkage after cement consolidation is avoided, and a blank zone is avoided.

The invention discloses a deep cover layer pipe drilling method comprising the following steps: drill hole formation through one-time pipe drilling is performed by at least two types of drilling tools, an operation hole encircled by lowered pipes is formed, and deep cover layer grouting is performed through the operation hole, wherein pipes of at least two materials are lowered in the period of drill hole formation through one-time pipe drilling by at least two types of drilling tools. Drill hole formation through one-time pipe drilling is realized, repeated drilling is avoided, the efficiency of construction is improved greatly, the occurrence of hole fault is avoided effectively, the occurrence of pipe breakage is reduced effectively, the construction cost is lowered, and smooth completion of a project is ensured.

The invention belongs to the technical field of mine water prevention and control and particularly relates to a curtain grouting method for a shallow buried nearly horizontal burnt rock water-bearinglayer. The problems that as for existing curtain grouting, the drilling engineering amount is large, the drilling cost is high, drill holes cannot be drilled continuously in burnt rock, effect inspection holes possibly have leakage points, and area occupation of a drilling field is large are solved. The curtain grouting method provided by the invention mainly comprises the following steps that (1)a curtain line is arranged; (2) a row of vertical holes is arranged in the curtain line at equal distances; (3) an orifice closed grouting technology is adopted, and the burnt rock water-bearing layer is grouted according to the drilling sequence; and (4) after all the vertical holes in the curtain line complete drilling and grouting, the 1-N nearly horizontal directional drill holes are arranged, and 1-N layers of horizontal sections of the directional drill holes are arranged. The curtain grouting method has the following advantages that area occupation of the drilling field is small, the drilling engineering amount is small, the drilling engineering cost is low, choices of the drilling field are more, and the effects of curtain inspection and grout supplementing are good.

A high power DC steam plasma torch system (S) includes a steam plasma torch assembly (1) wherein superheated steam (46) is used as the main plasma forming gas, thereby resulting in a very reactive steam plasma plume. The superheated steam (46) is injected internally directly into the plasma plume via a ceramic lined steam feed tube (25) for reducing condensation of steam before reaching the plasma plume. The superheated steam (46) flows through a gas vortex (16) which has tangentially drilled holes thereby resulting in a high speed gas swirl that minimizes electrode erosion. In the present steam plasma torch system (S), the plasma torch assembly (1) is ignited using an ignition contactor which is housed external to the plasma torch assembly (1). The superheated steam (46) is injected into the plasma plume using a water cooled steam vortex generator assembly (15).

The invention discloses a device for quickly drilling in frozen earth and a construction method of the device. The device and the method aim to increase drilling speed. The device for quickly drilling in the frozen earth comprises a drill pipe and a drill bit. A through nitrogen conveying hole is formed in the drill pipe and the drill bit, the drill bit is provided with a liquid nitrogen outlet, the rear end of the drill pipe is connected with a liquid supply pipe, and the liquid supply pipe is connected with a liquid nitrogen storage tank. The invention further discloses the construction method for quick drilling in the frozen earth. The method includes the following steps that the drill pipe extends into a drilled hole frozen in advance; liquid nitrogen in the liquid nitrogen storage tank is input into the drill bit fixed at the bottom of the drill pipe through the liquid supply pipe, and the drill bit is precooled; after precooling, a drilling machine is started, the drilling machine drives the drill pipe to rotate and impact, and the drill pipe drives the drill bit fixed at the bottom of the drill pipe to rotate to drill; in the drilling process, the liquid nitrogen in the liquid nitrogen storage tank flows out from the liquid nitrogen outlet of the drill bit after passing the liquid supply pipe, the nitrogen conveying hole in the drill pipe and an internal channel of the drill bit. The device and the method are suitable for drilling through the drill bit in frozen holes.

The invention discloses an integrated circuit board processing and drilling device in the field of circuit board processing. The integrated circuit board processing and drilling device comprises a bottom assembly, a moving assembly, a drilling assembly and a cleaning assembly, and is characterized in that the bottom assembly comprises a bottom plate and a control panel arranged at the upper end ofthe bottom plate. The integrated circuit board processing and drilling device has the beneficial effects that a bearing table stably and movably supports a movable placing plate through symmetrical clamping rails, a pushing screw is installed in the bearing table and connected with the output end of a servo motor, and the servo motor can accurately control the pushing screw, so that the moving distance of the movable placing plate is accurately controlled; four pressing air cylinders are connected to the movable placing plate, one end of each pressing air cylinder is connected with an L-shaped clamping jaw, and the four corners of a circuit board are pressed through the clamping jaws, so that placement is stable, subsequent punching is facilitated, and the punching precision is improved;the movable placing plate facilitates placement of the circuit board, and the clamping jaws pushed by the pressing air cylinders achieve synchronous and rapid pressing; and the automation degree is high.

In a first embodiment, an instrument guide includes an elongate guide body extending between a proximal end and a distal end, wherein a portion of the guide body extending proximally from the distal end is generally arcuate. The instrument guide further includes a rigid tip extending generally linearly from the distal end of the guide body. The rigid guide further includes a cannulation formed in the guide body and extending continuously from the proximal end of the guide body to a distal terminus of the tip. The cannulation can be approximately uniform in diameter. The instrument guide further includes a cut-out region, different from the guide body cannulation, extending along at least a portion of an inner radial surface of the arcuate body portion and intersecting the guide body cannulation.

A method of avoiding the need for a scraper run in drill out operations. The method involves the single step of incorporating a rotary scraper into the downhole drilling motor assembly in such a manner that the rotary scraper rotates with the drill bit and follows the drill bit to scrape debris from interior casing walls.

The invention discloses a hole-flushing method for a gas extraction drilled hole under a coal mine. A hole-flushing device composed of a water tank, a high-pressure pump, a high-pressure hard pipe, a high-pressure hose, a self-propelled drill bit, a base, a winch and a pushing mechanism is adopted for crashing and flushing blocked and collapsed parts of the gas extraction drilled hole which blockage and collapse occur on under the coal mine through the rock-breaking capacity of self-propelled water jet, and the drilled hole is dredged and reamed; traction force provided by the self-propelled drill bit is utilized for moving the high-pressure hose forwards in a straightening mode; the characteristics that the resin pipe has certain rigidity and can transmit pushing force are utilized for moving the self-propelled drill bit forwards within a larger range. The hole-flushing method mainly has the effects of dredging and reaming the blocked and collapsed drilled hole under the coal mine so as to improve gas extraction efficiency. Compared with the prior art, the hole-flushing method has the advantages of being convenient to operate, capable of improving hole-flushing efficiency and the like and is mainly suitable for dredging the blocked extraction drilled hole in the process of gas extraction on a soft coal bed.

The invention discloses a net anchoring drill carriage which comprises a lower carriage frame and an upper carriage frame arranged on the lower carriage frame and further comprises a net anchoring mechanism. The upper carriage frame is provided with a drill arm seat, a drill arm arranged on the drill arm seat, and a drill rod propeller arranged on the drill arm. The net anchoring mechanism comprises a supporting arm assembly and a hanging net assembly. According to the net anchoring drill carriage, the net anchoring mechanism is arranged on the drill carriage, thus, when an net anchoring support needs to be arranged at the top of a roadway, the end of a steel wire net volume is connected with a horizontal support, and then the position of the horizontal support is adjusted through the supporting arm assembly to enable a steel wire net on the horizontal support is located at the top of the corresponding roadway; then the drill rod propeller is controlled by the drill carriage to conductdrilling among steel wire net holes; and finally, through the drill rod propeller, the drill rod is inserted into a drill hole, and the steel wire net is fixed to the top of the roadway through the anchor rod. According to the net anchoring drill carriage, the drill carriage is driven to travel along the roadway, thus, net anchoring operation is repeatedly conducted so that the net anchoring support can be quickly arranged in the roadway, the operation efficiency is high, and safety is good.

The invention discloses a tree core groove machining method and a printed circuit board. The method comprises the steps that two symmetrical small round holes are manufactured in a to-be-machined areaof the printed circuit board through a drill bit; a large circular hole is formed between the two small circular holes through a first grooving cutter, and the large circular hole intersects with thetwo small circular holes; back drilling is performed on the two small circular holes through a second groove cutter with the same size as the drill bit to manufacture a dust removal hole so as to remove drilling dust; and deburring holes are formed in each intersection position of the small circular hole and the large circular hole through a milling cutter so as to remove drilling burrs. According to the tree core groove machining method and the printed circuit board provided by the invention, drill holes used for removing burrs, dust and cellosilk are additionally formed in a processing technology so that the burrs and the cellosilk can be completely removed, the burrs generated after copper deposition and electroplating are completely eradicated, requirements of component installation are met, and groove hole processing quality is improved.

The invention discloses a planting method of a square plastic strip disc glass brush. The brush comprises a fixed disk; a drill hole; a feeding method comprises the following steps that two feeding rollers are driven to rotate in an opposite direction by a feeding servo motor on the feeding part, and the roll materials are driven to move downwards by the feeding rollers; the two roll materials sequentially pass through the first feeding hole, the second feeding hole and the third feeding hole and then enter a fixed knife; a cutting method comprises the following steps that two roll materials extending into the fixed knife are cut into two roll materials, wherein the two roll materials are in a parallel state; a transverse feeding method comprises the following steps that a moving knife isdriven to transversely move in a sliding groove by a swing arm of a blur-cutting moving knife, the two roll materials are pushed out of the sliding groove by the moving knife, and the two roll materials are moved into a material receiving opening at the lower end of the material receiving groove through a fourth feeding hole; a longitudinal feeding is implemented; a lateral feeding method comprises the following steps that a blade are driven to extrude the strip material by a transverse hair feeding swing arm, and the two roll materials are pushed to the upper part of the hair nozzle on the hair planting mechanism; hair is planted. The device has the advantages of small labor intensity and high work efficiency.

The invention provides a circuit board and a manufacturing method thereof. The circuit board comprises two first circuit boards which are oppositely arranged; first copper-resistant material layers located at the positions, needing to be drilled, of the two opposite surfaces of the two first circuit boards; A first bonding sheet positioned between the first copper-resistant material layers of thetwo first circuit boards and used for bonding the two first circuit boards; a through hole positioned in the position area of the first copper-resistant material layer, penetrating through the two first circuit boards and the first bonding sheet and exposing the first copper-resistant material layer; a conductive material, positioned on the side wall of the through hole; and electroplated layers positioned on the conductive material and on the surfaces of the sides, far away from the first copper-resistant material layer, of the two first circuit boards. Therefore, a non-continuous metallizedblind hole structure is realized, the wiring density is increased, any layer of fault is realized, and meanwhile, the signal hole back drilling zero stub can be realized, so that the signal integrityis improved.

The invention discloses glutinous rice sea duck eggs. The glutinous rice sea duck eggs comprise sea duck eggs, glutinous rice and ingredients, wherein the ingredients comprise the following ingredients of five spice powder, sandworm powder, a ham soup-stock, a light soy sauce, fermented soya bean essence, pepper powder, diced sausages, diced cured meat, ginger soaking wine, carrot granules, greenbeans and protein. The glutinous rice sea duck eggs are made through the following making technology of drilling holes in egg shells, separating egg white, adding the glutinous rice and the ingredients into the egg shells, firstly performing steaming, then performing vacuum packing, and finally, performing sterilization by a sterilization method. The nutrition and the palatable taste of the sea duck eggs and the nutrition and the palatable taste of the glutinous rice are preserved, so that the glutinous rice sea duck eggs are rich and balanced in nutrition and convenient to carry and can be preserved for a long term.

The computer host drilling equipment comprises a workbench, a cam, a cam groove, a first dovetail groove, a first guide rail, a cam rod, a second dovetail groove, a second dovetail guide rail, a mounting plate, a sliding sleeve, a positioning pin, a cone, a computer shell, a moving rod, an incomplete gear, a first tooth block, a second tooth block, a third tooth block, a positioning plate, a positioning hole, a positioning groove, a drilling machine and a motor. Two vertical plates are arranged on the upper part of the workbench, and cam holes with a same axis are formed in the upper parts of the two vertical plates. A sliding groove is formed in the outer side of the right vertical plate. A platen is arranged on the upper portions of the vertical plates. A platen groove is formed in the front side of the platen. A drill bit is arranged on the upper portion of the drilling machine. The drilling machine is fixedly connected with the rear portion of the workbench. The middle of the cam is provided with a cam shaft, the surface of the cam is provided with a cam groove, a cam shaft is rotatably connected with a cam hole, the cam shaft rotates in the cam hole, the left side of the cam shaft is connected with a motor through a coupler, and the motor is fixedly connected with a motor base.