Composite supporting system for coal mine rectangular gate roadway during pressure bump based on strong-releasing and strong-supporting theory

A technology of rock burst and composite support, applied in mining equipment, earthwork drilling, installation of bolts, etc., can solve the problem that the safety production of coal mining face cannot be guaranteed, the safety of mining personnel and equipment is threatened, and the support cannot be provided. and other problems, to achieve the effect of good anchoring effect, convenient construction, effective shock absorption and energy absorption
CN108397218APending Publication Date: 2018-08-14XIAN UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIAN UNIV OF SCI & TECH
Publication Date
2018-08-14

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Abstract

The invention discloses a composite supporting system for a coal mine rectangular gate roadway during pressure bump based on the strong-releasing and strong-supporting theory. The composite supportingsystem comprises a roof supporting system used for supporting a gate roadway roof, a side supporting system used for supporting the two sides of the gate roadway and a pressure-releasing groove formed in a floor of the gate roadway. The roof supporting system comprises a plurality of roof short anchor cables and energy absorption pieces; every two adjacent roof short anchor cables extending in the length direction of the gate roadway are connected through roof U-shaped channel steel, and roof pressure-releasing holes are formed in the roof; the side supporting system comprises a plurality ofside short anchor cables and energy absorption pieces; and every two adjacent side short anchor cables arranged in the height direction of the sides are connected through side U-shaped channel steel,and side pressure-releasing holes are formed in the two sides of the gate roadway correspondingly. The composite supporting system adopts the principles of strong-releasing and strong-supporting as well as shock absorption and energy absorption, overall deformation of the roadway can be effectively restrained, harm to personnel and equipment can be reduced when pressure bump occurs, and meanwhilefloor heave of the roadway is effectively restrained.
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Description

technical field

[0001] The invention belongs to the technical field of rock burst coal mine support, and in particular relates to a rectangular parallel groove composite support system for rock burst coal mines based on the theory of strong unloading and strong support. Background technique

[0002] At present, rockburst disasters have become the main disasters that occur frequently and are difficult to solve in the mining process of coal roadways with deep buried thick coal seams. A large number of on-site monitoring data show that under the influence of strong dynamic pressure, the range of the loosening circle has exceeded the anchorage range of the bolts, causing most of the bolts to fail and unable to provide good support. The deformation of the roadway is severe, and it is difficult to solve the problem of the sidewall and the bottom. The traditional support methods can no longer guarantee the safe production of the coal mining face. This not only affects the mining p...

Claims

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