Seepage instrument and test system for testing disturbed seepage characteristics of broken rock

Abstract

The invention provides a seepage instrument and a test system for testing disturbed seepage characteristics of broken rock. The seepage instrument comprises a frame, a cylinder barrel, a piston, a disturbance ring and a crank sliding block mechanism; the test system comprises the seepage instrument, a detection system, a water supply system, a hydraulic servo system and a drainage system; the water supply system is used for supplying a water source to a double-action hydraulic cylinder in the hydraulic servo system; the hydraulic servo system is used for supplying stable running water to one end of the seepage instrument through the double-action hydraulic cylinder; the other end of the seepage instrument is connected with the drainage system and the detection system. The seepage instrument and the test system are capable of really simulating the complex dynamic coupling environment of the broken coal rock under the influence of mining disturbance and accurately researching the disturbed seepage characteristics of the broken rock.

Description

technical field [0001] The invention relates to a device and system for testing seepage characteristics of broken rocks, in particular to a seepage meter and a testing system for testing disturbed seepage characteristics of broken rocks, which are used to test the seepage characteristics of broken rocks under different disturbances. Background technique [0002] Underground mining activities make the surrounding rock in a post-peak stress state or broken state under the action of mining stress, which greatly changes the pore structure and permeability of the surrounding rock, thus leading to the water-conducting fracture zone, fault zone and karst subsidence of the roof and floor. Column bursts of water and causes disaster accidents. [0003] In particular, with the increase of mining depth, deep mines face a complex fluid-solid coupling mechanical environment of "high ground stress, high ground temperature, high karst water pressure" and mining disturbances, such as 2013-02...

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned existing broken rock seepage device tests the static seepage field, but in the actual mining process of the rock mass, the osmotic pressure of the rock fissure muddy water fluid will change, and a dynamic seepage field will be generated in the broken rock. This complex The dynamic seepage field is due to the stress wave generated by the dynamic load squeezing the broken rock, resulting in a sudden increase in the osmotic pressure of the muddy water in the broken rock, which cannot be realized with the known seepage test device

Therefore, the above-mentioned existing seepage simulation test device only simulates the mining disturbance through simple vibration, and cannot truly and accurately study the behavior of the broken rock mass during the mining process for the complex dynamic coupling environment of the broken coal and rock mass under the influence of the mining disturbance. disturbance problem

Images