Method for constructing wall body for retaining and protecting roadway along goaf by filling net cage with aeolian sand
A technology of aeolian sand and net cages, which is applied in the direction of filling, earthwork drilling, safety devices, etc., can solve the problems of surface water shortage, unsuitability, and thin bedrock, so as to reduce construction costs, ensure support effects, and improve The effect of recovery
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[0027] In the figure, the operation steps of the method of using aeolian sand to fill the net cage to construct the wall of the gob-side entry roadway protection are as follows:
[0028] ① After the working face 7 is pushed through, level the bottom plate at the reserved road wall;
[0029] ②Prefabricated steel wire cage 1 on the ground, the length a of the cage is 1 / 2 of the length of one construction of the roadway wall (generally the advancing length of the working face 7 in one day); the width b of the cage is 1 / 2 of the length a of the cage; The height c of the cage is 1 / 4-1 / 2 of the height of the working surface 7, and 0.5m≤c≤1.0m;
[0030] ③Arrange the prefabricated steel wire cages 1 in the floor area of the reserved alley wall after leveling, and use iron wires to overlap the edges 4 of the adjacent steel wire cages to ensure that the tensile strength of the lap joints is not lower than that of the steel wire mesh 2 80% of the tensile strength;
[0031] ④ laying g...
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