Automatic control method for hydraulic rod of rock burst roadway
A technology of rock burst and control method, applied in tunnels, tunnel linings, underground chambers, etc., can solve problems such as prevention and control of rock burst in difficult roadways, poor effect, etc. Eliminate the effect of roadway impact ground pressure
Active Publication Date: 2021-08-17
TAIYUAN UNIV OF TECH
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Problems solved by technology
Blasting pressure relief and other rock burst prevention and control measures have high requirements on mine production conditions, and cannot be used in high-gas mines; drilling pressure relief and other measures can slow down the stress accumulation of roadway surrounding rocks to a certain extent, but the effect is poor, and it is difficult to recover Solving the Prevention and Control of Roadway Rock Burst at the Root Cause
Method used
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[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0027] refer to figure 1 In order to achieve the above object, the present invention provides a control device for preventing and controlling rock burst tunnels based on automatic hydraulic rods. Including roadway support system and automatic hydraulic rod system; wherein, the roadway support system includes the roof of the roadway and the anchor rod 15 of the two sides; the automatic hydraulic rod system includes hydraulic rod 6, liquid inlet pipeline 10, liquid return pipe Road 13, hydraulic rod pressure relief valve 8 and mine emulsion pump 7, the hydraulic rod 6 is set inside the surrounding rock of the roadway, and the outside of the hydraulic rod is provided with a hydraulic rod liquid inlet 9, a hydraulic rod pressure relief valve 8 and a hydraulic rod The liquid return port 12 and the mining emulsion pump 7 are installed on the roadway bottom plate 1...
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Abstract
The invention belongs to the field of mining engineering, and particularly relates to an automatic control method for a hydraulic rod of a rock burst roadway. The method comprises the steps of S1, establishing a numerical calculation model, and determining roadway support parameters; S2, tunneling the roadway; S3, installing a roadway support system; S4, drilling a hydraulic rod installation hole and installing the hydraulic rod; S5, conducting leakproofness detection on a hydraulic system pipeline; S6, injecting pressure into the hydraulic rod; S7, regulating and controlling the pressure of the hydraulic rod, wherein the pressure reading of a mining emulsion pump is observed, and the pressure is regulated; and S8, circularly operating the steps S2-S7 till the roadway is completely supported. According to the automatic control method for the hydraulic rod of the rock burst roadway, the pressure of the hydraulic rod is adjustable, when the stress of a roadway floor is small, the large pressure of the hydraulic rod can pre-fracture roadway surrounding rock, tiny cracks are manufactured in the surrounding rock, a certain deformation space is provided for concentrated stress, and the effect of delaying stress concentration of the roadway surrounding rock is achieved.
Description
technical field [0001] The invention belongs to the field of mining engineering, in particular to an automatic prevention and control method for hydraulic rods in rock burst roadways. Background technique [0002] Under the influence of stope mining and roadway excavation disturbance, the internal stress of the roadway surrounding rock will be redistributed or even accumulated. When a large amount of energy is accumulated, the instantaneous release of stress will lead to the failure of the roadway support body, and severe rock burst ACCIDENT. In order to ensure the safe use of roadways in mines with impact tendency, the methods commonly used in my country are coal seam blasting, drilling and induced blasting. Blasting pressure relief and other rock burst prevention and control measures have high requirements on mine production conditions, and cannot be used in high-gas mines; drilling pressure relief and other measures can slow down the stress accumulation of roadway surrou...
Claims
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Patent Timeline
Login to View More IPC IPC(8): E21D9/00E21D11/15E21D20/00E21F17/18
CPCE21D9/001E21D11/152E21D20/00E21F17/18
Inventor 王仲伦宋选民朱德福霍昱名杨玉龙席培淇吉兴旺郭耀渊靳伟民张成阳
Owner TAIYUAN UNIV OF TECH