Supporting method for gob-side entry retaining and its sliding form for injection entry

Abstract

A method for supporting a gob-side entry of a coal mine recovery roadway. With the progress of the working face, concrete is pumped to the filling mold for pouring on the side of the goaf of the gob-side entry along with the progress of the working face, and the filling wall 8 beside the roadway is constructed; the top of the filling wall 8 and the The outer roof is supported by anchor net cables and constructed on the front side of the head support 1; the filling form adopts the height-adjustable integral pull-type slip form 6 for the entry lane; the bunker support 3 is used on the side of the goaf of the slip form and 5 temporary support; the sliding form of the injection lane and the bunker bracket are connected and moved by the pulling jack and the head bracket 1; the bunker bracket, the filling wall beside the lane and the top surface of each head bracket supported by the outer anchor net cable are provided with protective anchors Grooves for rod anchors. In addition to the advantages of less digging of roadways, realization of coal pillar-free mining, and relief of continuous tension in mining, the sliding form of the injection roadway of the present invention can be moved as a whole by hydraulic pressure adjustment, which is convenient to use and improves work efficiency; anchor net cable support cooperates with filling wall support , to more effectively control the separation layer of the direct roof; the bunker support and the head support can protect the anchor cable and anchor rod from being damaged by the roof.

Description

technical field [0001] The invention relates to a gob-side entry support technology of a coal mine recovery roadway, in particular to a gob-side entry support method in which the side of a gob-side entry is supported by a concrete pouring side filling wall. The utility model also includes a filling mold slip form for filling a wall next to a concrete pouring road. Background technique [0002] In order to reduce the loss of coal pillars between the transportation lane and the return airway in the coal mining section, coal pillarless mining is adopted, that is, it is close to the goaf, and the transportation channel of the previous section is reserved and maintained as the return air of the lower section Along the trough, no coal pillars are left in between, which saves the process of digging a roadway for the mining of the next working face. In order to achieve the above purpose, it is necessary to strengthen the support on the side of the goaf behind the support while mini...

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