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Support Technology for the Low Stress and Soft Strata Composite Roof with High Deformation Roadway

  • QIN Guangpeng;YE Ping;WEN Zhijie;XIA Junmin
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  • 1. Department of Resources and Civil Engineering, Shandong University of Science and Technology, Tai'an 271019, Shandong Province, China;2. Key Laboratory of Mine Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao 266510, Shandong Province, China;3. Coal Production Department of Shenhua Group Corporation Limited, Beijing 100011, China

Received date: 2011-11-01

  Revised date: 2011-12-02

  Online published: 2011-12-18

Abstract

The surrounding rock stress level of low-stress composite soft strata roadway is lower for the shallow depth; however it displays soft rock characteristics for its unique lithology and structure of roof and floor. The roadway support techniques for such kind of geological conditions are researched with the background of Heigou Coal Co., Ltd. four-two coal seam. Clamping action produced by bolting support is able to not only increase the completeness of shallow rock and bearing capacity of deep rock, but also reduce the failure range of shallow rock; cable support could increase the integrity of shallow and deep rock, slowing the overall sedimentation trends of surrounding rock; metal mesh and steel belt could enhance the restraint action to surface adjoining rock, limit failure zone development towards depth and deformation of surface rock and roof strata; corner bolt induce peak stress shift to the depth, reduce the conversion level of vertical stress to horizontal stress, and control the roadway floor heave deformation. The composite applications of support methods mentioned above are able to achieve the valid effect of composite soft strata with high deformation roadway.

Cite this article

QIN Guangpeng;YE Ping;WEN Zhijie;XIA Junmin . Support Technology for the Low Stress and Soft Strata Composite Roof with High Deformation Roadway[J]. Science & Technology Review, 2011 , 29(35) : 33 -38 . DOI: 10.3981/j.issn.1000-7857.2011.35.005

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