Segmented observation system for mining failure zone of mine roof bottom plate

Abstract

The invention belongs to the technical field of rock mass failure range measuring, and discloses a segmented observation system for a mining failure zone of a mine roof bottom plate. The segmented observation system comprises a testing probe, a drilling rig, a drilling rod and a control operating table. The testing probe comprises a front plugging device, a tail plugging device, a converter and acommunicating pipe. The plugging devices comprise water leaking pipes, connectors and rubber bags, wherein the connectors and the rubber bags are connected to the two ends of the water leaking pipes.The rubber bags wrap the peripheries of the water leaking pipes in a surrounding mode, a plugging cavity is formed between each rubber bag and the corresponding water leaking pipe, and an external water source is injected into the plugging cavities to expand the rubber bags to form water injecting cavities with drill holes. A testing device can complete the plugging process and the testing processthrough the same external water source, high and lower hydraulic pressure variable control is achieved, it is guaranteed that the plugging process and the testing process are executed under the pressure required by the plugging process and the testing process, the winding problem of the drilling rod and a hose is avoided, operation steps are reduced, the number of workers is decreased, and the propulsion measuring efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of rock mass damage range measurement, in particular to a segmental observation system for mine roof and floor mining damage zones. Background technique [0002] The measurement of the range and permeability of the rock mass mining fracture zone is the basic parameter for studying the failure characteristics of the rock mass. It is of great significance for further exploring the relationship between it and the movement law and stress field of the rock mass. Variable electromagnetic method, microseismic detection and pressure water test method. Among them, the pressure water test method is the most reliable. The traditional device "double-ended side leakage device" is used to conduct water injection and discharge tests to determine the development height or depth of the rock formation affected by mining. In the traditional device, there are two external systems, the water injection operation platform and the...

AI Technical Summary

Problems solved by technology

In the traditional device, there are two external systems, the water injection operation platform and the plugging operation platform. There are relatively many operators, and there are 2 pipes corresponding to the drilled holes. During the propelling process, mutual entanglement is prone to occur, and at least it will cause the device to be blocked. If it is blocked or the observation process is unstable, it is easy to break the gas supply pipeline, causing the equipment to fail to work normally. Moreover, the traditional device is a test unit, and the detection efficiency is low. How to realize multi-segment measurement, reduce the number of pipelines in the borehole, and can Effectively control the water pressure, the existing technology fails to solve the above problems at the same time

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