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Combined support shield type comprehensive mining method

A combined support and mining method technology, applied in the field of mines, can solve the problems of low bearing capacity of pillars in wall caving method, loss of mine pillars and hidden dangers left in goaf, unsuitable for non-coal mine blasting mining, etc., and achieve good anti-corrosion Impact damage characteristics, on-site follow-up movement and long-term repeated use are reliable and convenient, and the effect of easy on-site operation

Active Publication Date: 2017-05-10
GUANGDONG ANYUAN MINING TECH SERVICE
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The mining method of this application is mainly used for thin-medium-thick ore bodies with horizontal-gentle inclination; for this type of ore bodies, the current mining methods in non-coal mines are mainly comprehensive method, room-and-pillar method and wall caving method, while coal mines are mainly The hydraulic prop fully mechanized mining method is adopted; the main defects of the comprehensive method and the room and pillar method are the loss of pillars and the hidden dangers left in the goaf; the main defects of the wall caving method are the low bearing capacity of the prop and unsafe recovery; the hydraulic prop fully mechanized mining method The disadvantage is that it is not suitable for the blasting method mining of non-coal mines; the combined support shield type comprehensive mining method of the present application aims to overcome the limitations of the above mining methods, and utilize the super strong supporting capacity and strong damage resistance of the combined support. Realize high-efficiency mining with no-loss or very-low-loss dilution that can adapt to mechanical and blasting operations

Method used

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  • Combined support shield type comprehensive mining method

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Embodiment Construction

[0018] Mining method: starting from the middle section of the transport roadway or connecting roadway, along the ore body inclination or pseudo-inclination direction, close to the ore body floor and excavate the mining standard roadway uphill, and temporarily support it according to the stability of the surrounding rock; , install the combination bracket; if the two operation lines are pulled apart at the same time, then install double rows of combination brackets; line direction; the control of the width of the empty roof of the mining line: the width of the mining face of the mining line should generally be controlled within 4 meters, and the maximum distance between the combined support line and the stable mine wall should be controlled within 8 meters or by the surrounding rock of the roof. Stability is determined; when the length of the working line is too large, the combined support cable should be divided into multiple segments and followed up one by one to reduce the ti...

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Abstract

The invention provides a combined support shield type comprehensive mining method. A combined support of the method ascends and descends through a jack, prestress is applied to the combined support, long-term bearing is achieved through lifting nuts and supporting threaded rods, the supporting height is adjusted by combining base plates and sole timber with the supporting threaded rods, the overall structure is simple, machining and manufacturing are easy, the supporting cost is reduced, on-site operation is easy and convenient, and the method can adapt to small and medium-sized mines. Compared with an existing comprehensive mining method and a room-and-pillar method, the combined support shield type comprehensive mining method is free of ore pillar losses, and the index that the loss ratio and the dilution ratio are close to zero can be met. Compared with an existing wall type caving method, an operation space is supported more safely and stably by the combined support, on-site following-up and moving and long-term repeated application of the combined support are more reliable and convenient, and caving treatment measures of the combined support for a goaf are more appropriate and safer.

Description

[0001] Technical field: [0002] This application belongs to the technical field of mining. [0003] technical background: [0004] The mining method of this application is mainly used for horizontal-gently inclined thin-medium-thick ore bodies; for this type of ore body, the current mining methods in non-coal mines are mainly comprehensive method, room-and-pillar method and wall caving method, while coal mines are mainly The hydraulic prop fully mechanized mining method is adopted; the main defects of the comprehensive method and the room-and-pillar method are the loss of pillars and the hidden dangers left in the goaf; the main defects of the wall caving method are the low bearing capacity of the prop and unsafe recovery; the hydraulic prop fully mechanized mining method The disadvantage is that it is not suitable for the blasting method mining of non-coal mines; the combined support shield type comprehensive mining method of the present application aims to overcome the limit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D23/04E21D23/03E21C41/16
CPCE21C41/16E21D23/0004E21D23/03E21D23/04
Inventor 刘照朗
Owner GUANGDONG ANYUAN MINING TECH SERVICE
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