Experimental method for simulating fault slip

Abstract

The invention discloses an experimental method for simulating fault slip. The experimental method comprises the following specific steps: I, processing a rock sample; II, setting a sound emission probe on each of a rock A and a rock C, and setting four sound emission probes on a rock B; III, placing the rock C in a pressure chamber of a micro-control rock servo pressure tester, placing the rock B on the rock C, placing the rock A on the rock B, and laying quartz powder with identical particle size on contact surfaces of the rocks to form quartz powder layers; IV, applying axial pre-stress; and V, performing experimental record and analysis, wherein horizontal shear force is applied to a combination at a constant displacement speed, a sound emission system starts working, the sound emission probes are used for acquiring data in real time, waveforms generated by the data are recorded in the sound emission system and then are converted into digital signals through a built-in AD conversion card, and the digital signals are stored in a computer hard dick. The experimental method is simple in operation and convenient in use, and is capable of simulating fault slip so as to improve the accuracy of data detection.

Description

technical field [0001] The invention relates to an experimental method for simulating fault slippage, which belongs to the technical field of mines. Background technique [0002] In the process of coal mine production, dynamic disasters seriously threaten the life safety of workers and the property safety of mines. In the dynamic disasters in coal mines, especially in various mining operations of coal mines, due to the weak mechanical structure of faults, slippage and dislocation are prone to occur, releasing a large amount of energy, which can induce rock burst and cause serious harm; The gas hazard is particularly prominent when the fault is activated. Coal and gas outbursts caused by fault activation account for a large part, because during the recovery process of the coal seam, the activation of the fault in front will be caused, so that the coal and rock mass on both sides of the fault or adjacent to it will be ventilated. The property changes instantaneously, causing ...

AI Technical Summary

Problems solved by technology

The traditional similar simulation method needs to establish the entire structural model, which consumes a lot of manpower and material resources, and the model cannot be reused; the recently developed numerical simulation method is simple and easy, and the model can be reused, but the established model is too idealized, resulting in errors. Larger, and the occlusal condition of the fault plane is difficult to be reflected by the numerical model, and the effect of simulating the slippage of the fault plane is poor

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