Deep underground rock excavation effect simulation test device and test method

A technology of simulation test and rock model, applied in the field of deep underground rock excavation effect simulation test device, can solve the problems of nonlinear dynamic behavior, construction test basis of difficult and deep tunnel engineering, and little research on dynamic unloading behavior, and achieve accurate test-based effect

Pending Publication Date: 2022-03-01
SUN YAT SEN UNIV
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Problems solved by technology

[0003] During deep underground excavation, the movement law in the vicinity of the tunnel and the unloading wave propagation law are the hotspots and difficulties of research. Most of the existing technologies use empirical formulas to predict, considering that the rock-soil medium has cohesive force, internal friction and The dilatancy characteristic, the most important one is the non-linearity of its dynamic behavior, while the research on rock-soil media in the prior art mainly focuses on the stage before failure, and there is little research on the dynamic unloading behavior after failure
Since the stress-strain state after failure is the key to revealing the nature of the rock-soil medium, it is difficult to provide intuitive and accurate test basis for the construction of deep-buried tunnels through the existing technology

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  • Deep underground rock excavation effect simulation test device and test method
  • Deep underground rock excavation effect simulation test device and test method
  • Deep underground rock excavation effect simulation test device and test method

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[0028] Next, the technical solutions in the embodiments of the present invention will be described in connection with the drawings of the embodiments of the present invention, and it is understood that the described embodiments are merely the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art are in the range of the present invention without making creative labor premise.

[0029] It should be understood that the number of steps used herein is only for convenience of description, and is not limited to the predetermined order of the step.

[0030] It will be appreciated that the terms used in the specification of the present invention are merely the purposes of describing the purposes of specific embodiments. As used in the specification of the present invention and the appended claims, unless the context clearly specifies other conditions, the singula

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Abstract

The invention discloses a deep underground rock excavation effect simulation test device and test method, and the device comprises a rock model, a pressure control device and a vacuum control device. The pressure control device comprises a pressure container, and a water inlet mechanism and a water outlet mechanism arranged on two sides of the pressure container; the water inlet mechanism is connected with the high-pressure water pump; the vacuum control device comprises a vacuum machine circuit switching disc arranged at the top of the pressure control device and an inflatable airbag connected with the vacuum machine circuit switching disc; the inflatable air bag is vertically arranged in the middle of the rock model and is connected with an external vacuum machine through the vacuum machine circuit switching disc; the rock model is arranged in the pressure container and comprises a plurality of vertically stacked rock blocks; wherein a plurality of strain gauges are arranged in one rock block, are connected with an external strain gauge and are used for providing real-time strain information in a simulation test process. When the device is used for carrying out a simulation test, a more direct and accurate test basis can be provided for deep mining construction design.

Description

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Claims

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Application Information

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Owner SUN YAT SEN UNIV
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