Method for preventing gob-side entry rock burst through side-drawing filling

A technology of rock burst and roadway, which is applied in the field of coal mine prevention and control of rock burst in gob-side roadway by pumping side filling to prevent and control rock burst in gob-side roadway, so as to reduce the trapping of advanced support, eliminate the risk of impact, and reduce the coal pillar The effect of leaving

Inactive Publication Date: 2014-02-05
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

[0003] In order to solve the above problems, the purpose of the present invention is to solve the major shortcomings of many rock burst prevention and control problems in most of the roadways along the goaf with small coal pillars. Methods of Prevention and Control of Rock Burst in Gob-side Roadway

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  • Method for preventing gob-side entry rock burst through side-drawing filling
  • Method for preventing gob-side entry rock burst through side-drawing filling
  • Method for preventing gob-side entry rock burst through side-drawing filling

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Embodiment Construction

[0018] The specific embodiments of the present invention will be further described below in conjunction with the specific embodiments to further illustrate the technical solution of the present invention.

[0019] Such as Figure 1-3 As shown, the present invention utilizes pumping side filling to prevent and control the method for rock burst in gob-side roadway, specifically comprises the following steps:

[0020] 1. In the longwall working face of the deep well, the roadway 2 has a width of 4.5m. First, add a support of the same type behind the mining support 3 of the coal seam working face 1 as support support 4, and ensure that the roadway behind the support is within the range of 210~15m The top plate 10 is complete, and can meet the needs of ventilation, blasting and the like.

[0021] 2. If the average advancing distance of the working face is 5m per day, construct two blasting drill holes in the side of the roadway 2 behind the added support 4, the hole diameter is 42...

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Abstract

The invention discloses a method for preventing gob-side entry rock burst through side-drawing filling. The method comprises the following steps: additionally arranging a bracket for supporting behind a stope face bracket; constructing, exploding and drilling holes in entry sides behind the support bracket at certain intervals, wherein shallow holes are pre-cracking holes for loosening coal, and deep holes are throwing holes for throwing loosened coal into the entry; filling a part of the entry to form a pressure relief protection zone, and forming a wedged clamping anti-burst structure through top plates and bottom plates; tunneling in a previous mining surface filling entry following the mining surface gob-side entry, supporting by using a shed, carrying out guniting on the surface of the entry behind a tunneling head, and reinforcing and preventing and extinguishing fire in partial areas by taking backfill grouting measures. A novel anti-burst technical system for performing explosion, filling, in-situ tunneling and supporting behind the mining surface is established.

Description

technical field [0001] The invention belongs to the technical field of coal mine mining, and in particular relates to a method for preventing and controlling rock burst in a gob-side roadway in a coal mine by using pumping side filling to prevent and control rock burst in the gob-side roadway. Background technique [0002] The control of rockburst in coal mines is still an international problem, especially in the mining of deep mines along the gob face, which is often accompanied by destructive rockburst, causing serious casualties. At present, most gobside roadways in deep mines adopt the method of retaining small coal pillars for roadway protection. Mining practice shows that this method has disadvantages such as low resource recovery rate, large deformation of roadway surrounding rock, difficulty in advance support, and heavy workload of rock burst prevention and control. For example, CN1664310A discloses a coal mine island coal pillar rockburst control method. It first a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/16
Inventor 姜福兴朱斯陶
Owner UNIV OF SCI & TECH BEIJING
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