Hierarchical depressurization drilling fissure detection system

Abstract

The invention belongs to the technical field of rock mass mining damage range determination, and relates to a grading buck drilling fracture detection system. The system includes a testing probe, a drilling machine, a drilling rod and a control operation platform. The testing probe includes stoppers and partial pressure assemblies; the partial pressure assemblies are connected to tail stoppers through a communicating pipe, and include a primary converter and a secondary converter; the secondary converter sleeves on the outside of the primary converter, and the secondary converter and the primary converter are in threaded connection; the stoppers include water leaking pipes, series connectors and rubber capsules; the rubber capsules wrap the outside of the water leaking pipes and form plugging cavities with the water leaking pipes, and the two ends of each rubber capsules are fixed by fastening rings; and the water leaking pipes are provided with water leaking holes, external water sources can enter the plugging cavities through the water leaking holes so that the rubber capsules can be bloated and form water injecting cavities with a drilling hole. The testing device simplifies anoriginal operation system, and therefore, winding problems of the drilling hole can be avoided, plugging and observing processes can be realized by utilizing the same outside world, that the pluggingand observing processes work under pressure can be guaranteed, and pressure conversion can be more sensitive and stable.

Description

technical field [0001] The invention belongs to the technical field of rock mass damage range measurement, and in particular relates to a hierarchical pressure-reduction drilling fissure detection system. Background technique [0002] The measurement of the depth of the mining fracture zone in the mine floor is an important parameter to indicate the occurrence state of coal and rock. It is a key basic parameter in the study of mine water prevention and control. Therefore, in order to study the formation of water-conducting channels in mining surrounding rocks, it is necessary to grasp the law of rock movement and determine the height of mining damage zones. The on-site detection adopts a series of detection equipment represented by "double-end plugging leak detection device". There are multiple operation and control systems connected to the external terminals, and there are at least 2 or more pipelines in the corresponding interior. The operation process is cumbersome and T...

AI Technical Summary

Problems solved by technology

The on-site detection adopts a series of detection equipment represented by "double-end plugging leak detection device". There are multiple operation and control systems connected to the external end, and there are at least 2 or more pipelines in the corresponding interior. The operation process is cumbersome and There is a winding problem, and the stability is poor during the observation process

In the series of products, although the single circuit problem can be solved, there is a large range of water pressure conversion, and the stability of the conversion process is not good. It is not suitable to control the water pressure, which may easily lead to mechanical failure.

, the existing technology fails to solve the above problems at the same time

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