Real-time monitoring and early warning system and method for failure depth of coal seam floor in mining face
A technology for mining working faces and coal seam floors, which is applied to mining equipment, earthwork drilling, mining equipment, etc., can solve problems such as inability to perform continuous observation and difficulty in achieving continuous dynamic monitoring, so as to improve work efficiency, save manpower and material resources, and improve The effect of accuracy
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[0030] like figure 1 As shown, a real-time monitoring and early warning system for the damage depth of the coal seam floor in the mining face, which includes:
[0031] Bottom plate drilling optical cable test system: select a suitable area in the roadway for the working face to implement bottom plate drilling, and the drilling design parameters meet the following two requirements: (1) The drilling should face the direction of the cutting hole and be parallel to the mining direction; (2) The drilling control depth should be greater than the theoretically calculated floor damage depth, and the theoretical depth is calculated by formula (1):
[0032] h=0.0085H+0.1665α+0.1079L-4.3579 (1),
[0033] In formula (1), H is the mining height of the coal seam, L is the oblique length of the working face, and α is the inclination angle of the coal seam.
[0034]After the drilling construction is completed, the distributed strain sensing optical cable is installed. After the distributed ...
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