Deep roadway bottom heave control device and method based on intelligent hydraulic bag

Abstract

The invention discloses a deep roadway bottom heave control device and method based on an intelligent hydraulic bag. The device comprises a top plate supporting system, an H-type support and an intelligent hydraulic bag system; the H-type support is poured by C30 reinforced concrete with the length of 2 m; steel ribs with the diameter of 10 mm are adopted as a framework; No.425 cement is poured; meanwhile, a roadway wall anchoring rod hole, a hydraulic bag liquid inlet hole, a hydraulic bag liquid returning hole and a hydraulic bag pressure relief hole are preserved; the intelligent hydraulicbag system comprises a bottom plate hydraulic bag, a pressure relief pipeline, a pressure relief valve and a mineral emulsion pump; the hydraulic bag is poured with stainless steel with the thicknessof 5 mm, and the ultimate strength is 42 MPa; the hydraulic bag is 3 m wide, 2 m long and 1.5 m high; and meanwhile, a liquid inlet pipe, a liquid returning pipe and a pressure relief pipe are poured.The deep roadway bottom heave control device is simple in design, modular in operation, intelligent in supporting and stable and detectable in supporting effect; stress pre-warning can be realized; rock burst can be effectively prevented; and roadway bottom heave and roadway wall caving can be controlled to the greatest extent.

Description

technical field [0001] The invention belongs to the field of mining engineering, and in particular relates to a deep roadway floor drum control device and method based on an intelligent hydraulic bladder. Background technique [0002] In the mining of deep coal resources, due to the large in-situ stress and the influence of the mining stress of the working face, the bottom of the roadway is large, which seriously affects the safe use of the roadway. The existing roadway floor heave control methods mainly focus on the combination of roadway floor grouting and reverse bottom arch to enhance the resistance of the roadway floor and achieve the purpose of effectively controlling the roadway bottom heave. However, this method is difficult to construct, and the operation is not accurate and cannot Realization of intelligence and high cost. At the same time, blindly increasing the roadway support strength can easily lead to rock burst. Another method is to excavate pressure relief ...

AI Technical Summary

Problems solved by technology

[0002] In the mining of deep coal resources, due to the large ground stress and the influence of the mining stress of the working face, the bottom of the roadway is large, which seriously affects the safe use of the roadway

The existing roadway floor heave control methods mainly focus on the combination of roadway floor grouting and reverse bottom arch to enhance the resistance of the roadway floor and achieve the purpose of effectively controlling the roadway bottom heave. However, this method is difficult to construct, and the operation is not accurate and cannot Realization of intelligence and high cost. At the same time, due to the blind increase of roadway support strength, it is easy to lead to the occurrence of rock burst

Another method is to excavate pressure relief grooves in the floor or carry out pot blasting in the deep part of the floor, the purpose of which is to release the stress of the floor rock layer to achieve the purpose of protecting the roadway floor, but this method will have a great impact on the overall stability of the roadway. The operation is imprecise, intelligent control cannot be realized, and the control effect is difficult to guarantee

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