Formwork filling construction technology between gob-side entry retaining frame

A construction technique and a technology for retaining roadways, which can be applied to fillings, safety devices, mining equipment, etc., and can solve problems such as potential safety hazards and support delays in support, so as to improve safety, improve work efficiency, and save production materials Effect

Active Publication Date: 2015-12-23
SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problems existing in the existing gob-side entry retaining construction technology, the support is lagging behind, and the support has potential safety hazards, it provides a construction process for molding and filling between gob-side entry retaining frames

Method used

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  • Formwork filling construction technology between gob-side entry retaining frame

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Embodiment Construction

[0008] Such as figure 1 As shown in the diagram, a construction process of molding and filling between gob-side entry retaining frames, the steps are to leave a space at the position where support needs to be reserved in the support group of the excavation face, and the supports 1 and 3 on both sides of the space Install the support frame 2 on the top, and then carry out the molding 4 filling operation in the safe space formed between the support frame 2 and the two supports 1,3.

[0009] After the mold making is completed, the filling operation is carried out. After the filling is completed, the normal coal cutting operation starts. When the coal mining face is advanced enough for the mold making distance and the filling material is solidified, the demoulding begins for the next mold making operation. When the coal shearer cuts enough for 4 cycles and reaches enough mold making space, mold making and filling will be done in time; after filling, coal cutting will continue, and...

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Abstract

The invention relates to the supporting technology of roadways of coal mines, in particular to a construction technology for formwork making and filling among gob-side entry retaining supports. The construction technology comprises the steps that a vacant site is reserved at the position needing to be provided with supports in a support set of a tunneling work face, a supporting frame is arranged on the supports on the two sides of the vacant site, and then formwork making operation and the filling operation are carried out in a safe space formed among the supporting frame and the two supports. According to the construction technology for the formwork making and the filling among the gob-side entry retaining supports, the stability of hydraulic supports is used, a traditional timber crib is replaced, the hidden danger that the supporting timber crib is pushed down when pressure is applied to top plates is removed, and the safety of the formwork making and filling process is improved; production using materials such as plates and beams are no longer used, and the production using materials are saved; the influence on coal cutting by solidification of filled materials is reduced, and working efficiency is improved.

Description

technical field [0001] The invention relates to coal mine shaft roadway support technology, in particular to a construction technique of molding and filling between frames of gob-side roadway retention. Background technique [0002] In the process of coal mine underground mining, the gob-side retaining process can reduce the amount of roadway excavation, save the excavation cost, relieve the tension of connection, maximize the recovery of resources, and prolong the life of the mine. It has significant economic and social benefits and has a strong application promotion value. The mold-making method and technology of retaining roadway filling are related to the strength and roofing ability of the filling wall, the complexity of the entire process and the safety of the construction process, so the research on the mold-making method and technology is of great significance. Formwork brackets are used to make molds, which has a high degree of automation and simple procedures, but...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F15/00
Inventor 宋乃彬李鹏飞李小芳赵景富郭佳林张小斌
Owner SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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