Fully mechanized caving face supporting top coal gas extraction system
A fully mechanized caving face and gas drainage technology, which is applied in the direction of gas discharge, mining equipment, earthwork drilling, etc., can solve the problems of long gas drainage time, drilling length limitation, production and excavation impact, and achieve economical and Significant social benefits, increased operating rate and output, and reduced gas overrun
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[0039] Such as figure 1 , figure 2 with image 3 As shown, the supported top coal gas extraction system for fully mechanized caving face of the present invention includes a hydraulic support. The top of the hydraulic support is provided with a top beam 1, the middle of the top beam 1 is provided with a groove 7 along the length direction, and the top beam 1 is below An overhead main pipe 2 is provided. The top beam 1 is provided with a drainage hole 3 communicating with the groove 7. The drainage hole 3 and the overhead main pipe 2 are connected by a supporting branch pipe 4.
[0040] The top beam 1 can be made in one piece, or it can be provided with reinforced convex plates on the left and right sides of the top beam 1. A groove 7 with a width of about 300 mm and a depth of about 30 mm is formed between the upper surface of the top beam 1 and the two reinforced convex plates. It plays the role of less drainage leakage, the recessed area is a loose air-permeable area, and the d...
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