Method and device for simulating formation of reverse faults in laboratory

Abstract

The invention discloses a method and device for simulating formation of reverse faults in a laboratory, and relates to the technical field of coal mine geology. A structure principle of traditional fault simulation experimental equipment is changed, a fault induction device is designed on the bottom of the interior of the equipment, and the role of inducing crack initiation of the faults is playedunder the conditions of upper pressing and lateral pressing; the position of the induction device can be adjusted and changed at any time, and formation process information of the simulated reverse faults with different inclination angles is obtained; the induction device is arranged on an elastic leather cushion, and the elastic leather cushion is connected with left and right compression steelplates into one whole, and the friction between a simulated formation material and a base is reduced in the process of lateral pressing. When the similar simulated formation material is laid, stress sensors are laid at a certain distance, stress changes are recorded in real time, and a transmission action mechanism of the faults to mining-induced stress is explained. The formation process of the reverse faults can be reproduced, the stress redistribution characteristics of a fault area after mining is mastered, and the influence of the existence of the reverse faults on mining is reflected.

Description

technical field [0001] The invention relates to the technical field of coal mine geology, in particular to a method and device for simulating reverse fault formation in a laboratory. Background technique [0002] The fault cuts the strata and destroys its continuity and integrity, forming a fracture zone of the fault zone, which causes great differences in the stress, displacement and failure form of the surrounding rock mass. When construction is carried out near faults, especially large faults, the superposition of engineering disturbance and faults may cause the response characteristics of the rock mass near the fault to be far different from that of the intact rock mass, thereby inducing engineering disasters, such as mine earthquakes and water inrush in mining engineering , roof caving, rock burst, coal and gas outburst, etc. my country's coal mining is dominated by well workers, most of which are underground, and inevitably cross various faults. When the faults are l...

AI Technical Summary

Problems solved by technology

However, in actual coal mining, most of the faults are pre-laid, without considering the stress change of the fault and the internal stress after formation, so the research on the above problems does not have much reference significance

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