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

Active Publication Date: 2017-07-28
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

[0004] In order to overcome the problems of existing drilling stress monitoring equipment for mining stress, coal and rock mass deformation monitoring adaptability, poor consistency, high monitoring cost,

Method used

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

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Example Embodiment

[0027] The embodiments of the present invention will be described in detail below with reference to the drawings.

[0028] Such as Figure 1-4 As shown, the monitoring device of the present invention includes multiple series-connected capsule pressure sensors 4, a multi-channel pressure monitor 2, a multi-channel displacement monitor 3, and a set of liquid injection device 1; the structure of the capsule pressure sensor 4 see figure 2 :Include a shell 12. In the embodiment, the left and right sides of the shell 12 are open, and the upper and lower surfaces of the shell 12 are the elastic surface 11 of the capsule, thereby forming a shell containing the elastic surface of the capsule; There is a guide groove 8 through which the capsule pressure sensor 4 is clamped on the drilled track 13; a two-position three-way solenoid valve 19 is provided in the housing 12, and the two-position three-way solenoid valve 19 is controlled and controlled by a control circuit The circuit is compo...

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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.

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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Application Information

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IPC IPC(8): G01L1/02G01L1/26G01B13/24
CPCG01B13/24G01L1/02G01L1/26
Inventor 赵同彬李刚邱月张鹏飞
Owner SHANDONG UNIV OF SCI & TECH
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