Integrated monitoring device of oriented stress distribution and deformation of single-hole coal-rock masses and monitoring method

A stress distribution and monitoring device technology, which is applied in the field of deformation monitoring of coal and rock mass and mining stress, can solve the problems of non-recyclable equipment, high monitoring cost, and poor consistency, so as to reduce the number of drilling holes, avoid disturbance, and detect reliably high degree of effect
CN106989849AActive Publication Date: 2017-07-28SHANDONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANDONG UNIV OF SCI & TECH
Publication Date
2017-07-28

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Abstract

The invention discloses an integrated monitoring device of oriented stress distribution and deformation of single-hole coal-rock masses and a monitoring method. The integrated monitoring device consists of multiple capsule pressure sensors, a three-way magnetic valve, a connection pipe, a multi-channel displacement monitor, a multi-channel pressure monitor, a steel filament rope and an installation guide rail. According to the invention, the capsule pressure sensors are arranged in drilling holes; through liquid injection devices, the hydraulic pressure of each capsule pressure sensor is allowed to reach a preset value; the capsule pressure sensors are well coupled to the coal-rock masses; deformation monitoring points are attached to the housings of the capsule pressure sensors so that reliable fixation of the deformation monitoring points is achieved; consistency of the stress monitoring and deformation monitoring of the coal-rock masses is ensured; and after the monitoring is finished, all electromagnetic control valves are opened, liquid in the capsules flows back, and the installation guide rail is moved out from detection holes, so recycling is finished. Thus, problems of poor applicability to mining induced stress and deformation of the coal-rock masses, poor consistency, high monitoring cost and unrecyclable devices in the current drilling hole stress monitoring devices are overcome.
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Description

technical field

[0001] The invention belongs to the field of monitoring of mining stress and deformation of coal and rock mass in mines, and in particular relates to a recoverable single-hole coal and rock mass directional stress distribution and deformation integrated monitoring device. Background technique

[0002] With the increase of coal mining depth in my country, the instability of coal and rock caused by mining stress in the surrounding rock of the stope is becoming more and more serious, and the stress of the surrounding rock in the mining space is also becoming more and more complex. The mining of the working face destroys the balance state of the original rock stress, the surrounding rock deforms and moves, and the stress redistributes. The stability of the surrounding rock in the stope and mining roadway mainly depends on the strength of the surrounding rock, the stress state, and the interaction between the support and the deformation of the surrounding rock. Am...

Claims

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