Thick ore body mining method

A technology for thick and large ore bodies and mining methods, applied in surface mining, mining equipment, underground mining, etc., can solve problems such as low work efficiency and potential safety hazards, and achieve the effect of improving work efficiency, preventing fragmentation and ensuring construction safety.

Active Publication Date: 2016-06-01
HUBEI SHANSHUYA MINING SCI & TECH DEV
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Benefits of technology

This patented technical solution involves reducing risks associated with demolition works for buildings during building maintenance or new constructions without causing harm themselves. It also includes steps that improve working efficacy while maintaining security measures such as layers separated into sections. Additionally, it suggests utilizing multiple material savings per unit length based on factors like lumber usage rates, water use levels, and gas prices. Overall, this system enhances efficient and effective operations within an industry's environment through improved safety standards and reduced costs compared to traditional methods.

Problems solved by technology

This patents describes various techniques related to improving the efficiency at excavating tunneling rocks containing high levels of calcium carbonates (CaCOs) called yellow shale or bile stone. These deposits require special treatment because they cause difficulties during drilling operations. Existing solutions like lining up holes beforehand may also lead to instability issues when trying to extract these materials. Therefore, an objective aim is developing better ways to efficiently exploit these valuable sources without causing environmental concerns associated with traditional extraction processes.

Method used

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Embodiment Construction

[0015] In the 401-2 panel area in the northwest of the Shanshuya mining area, the thickness of the ore seam is more than 8m, and the inclination angle of the ore seam is 3-5°. The structure of the roof near this area is poor, and the surface subsidence is not allowed in the later stage, so layered and segmented filling methods are adopted for mining. This technology adopts the step-by-step full-layer bottom-down mining technology to mainly solve the problem of secondary bottom-down in the process of stratification and segmentation, and at the same time improve the construction safety factor and effectively protect the lives and properties of operators. Aiming at the medium-thick phosphate ore body in the 401-2 panel (the average mining height is 8m), Shanshuya Mine researched and applied the box-type filling mining technology in the process of mining the ore in this panel, and along the cutting direction, the mines were separated on both sides of the mine house. The upper and low

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Abstract

The invention provides a thick ore body mining method. A thick ore body refers to an ore body thicker than 5m. According to a chamber type filling mining technique, upper and lower passages are respectively constructed in the middle and on two sides of a chamber along a cutting direction, roof cutting is performed towards the upper passage along a stoping line, a roof and side wall bolting nets are subjected to shotcrete supporting, and the lower passage are descended towards two sides along the stoping line and filled. The method includes steps of upper roof cutting, lower step descending, hierarchical segmented blasting, deslagging and loading, lower wet filling and upper cementing roof connection. By means of stepped full-layer descending mining, a free face is widened to increase blasting efficiency while material consumption caused by secondary descending is avoided, explosive consumption is reduced by 0.12Kg/t, detonator consumption is reduced by 0.11 detonator per t, and consumption of steel chisels and drills is reduced by 0.02Kg/t.

Description

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Claims

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Application Information

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Owner HUBEI SHANSHUYA MINING SCI & TECH DEV
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