Adjustable gob-side entry retaining wall with initial active and later buffering support and implementing method thereof
A construction method and adjustable technology, which are applied in the directions of earthwork drilling, pillars/supports, mining equipment, etc., can solve the problems of difficult side shifting operation of walls, inability to play active support, large subsidence of roadway roofs, etc. The construction work is easy to operate, the wall height is adjustable, and the supporting structure is reasonable.
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[0047] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.
[0048] Such as figure 1 , figure 2 As shown, the adjustable roadway retaining wall along the goaf of the present invention, which is active first and then pressure-relief support, includes a seat block 1, a lifting support block 2, a friction letting block 3, and a retractable letting block 4; among them, the seat block 1 is a concave structure;
[0049] The lifting support block 2 has a T-shaped structure, and the width of the horizontal part of the T-shaped structure of the lifting support block 2 in the front and rear directions is greater than the width of the seat block 1 in the front and rear directions;
[0050] Friction makes the shape of the pressure block 3 into a right triangle;
[0051] The two side surfaces of the lower section of the vertical part of the lifting support block 2 are tapered surfaces, and the vertical part of the T-shaped str...
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