A new type of uncoupled backfill support method for steel frames in roadways with complex broken surrounding rocks

A technology for crushing surrounding rocks and roadways, which is applied in the field of new uncoupled steel frame backfill support for complex broken surrounding rock roadways, which can solve the problems of increasing the secondary maintenance of roadways in the service cycle of the roadway, so as to reduce cleaning work, reduce workload, The effect of slowing down the deformation speed
CN114033422BActive Publication Date: 2022-06-28安徽太平矿业有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
安徽太平矿业有限公司
Publication Date
2022-06-28

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Abstract

A new uncoupled backfill support method for steel frames in roadways with complex broken surrounding rocks, including a trapezoidal steel support module for supporting the roadway, the support method also includes an uncoupled backfill process module, the uncoupled backfill The process module is used to increase the initial service cycle of the roadway. The uncoupled backfill process module includes the roadway overexcavation process module before the trapezoidal steel support is erected, and the log backfill process module after the trapezoidal steel support is erected. The roadway over-excavation process module also includes a reinforced vertical board process module, and the log backfill process module also includes a pre-dimension window process module. The roadway over-excavation process module is used to actively release the pressure and can be erected Before the support of the trapezoidal steel bracket, the pressure relief space is reserved in advance, and the roadway is drilled and blasted. After the blasting, it is trimmed with tools such as pneumatic picks to make the two sides of the roadway a continuous surface. The falling scum is cleaned up.
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Description

technical field

[0001] The invention relates to the technical field of roadway backfilling and support, in particular to a novel steel frame uncoupled backfilling support method for a roadway with complex broken surrounding rock. Background technique

[0002] At present, the supporting methods for soft rock roadways in domestic underground metal mines are mostly steel support. The cost of the bracket is slightly higher than that of the ordinary trapezoidal steel bracket, but it can better fit the arched roof of the roadway, and the pressure can be distributed on the steel bracket more evenly. Low cost, and the steel frame and backfill logs can be recycled during the mining process, and the mining cost can be significantly reduced in the long run. Therefore, trapezoidal steel support is widely used in the actual use of domestic underground metal mines.

[0003] In the process of use, since the vertical legs and the beam are connected by welding, the lateral pressure bearing ...

Claims

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