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| Application and research of high stress and compatible deformation anchor system in coal mine roadway |
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Received:March 29, 2020
Revised:April 10, 2020
Accepted:April 19, 2020
Published Online:January 29, 2021
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| DOI： |
| KeyWord:SPallets;Spin Anchor;Roadway;Bolt;Numerical simulation |
| Author | Institution |
| WangBo |
Ningxia Construction Vocational and Technical College |
| WangXiaoYan |
Ningxia University |
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| Abstract: |
| Along with the coal mine resources gradually to the depth development,The common bolt support can not meet the support requirement of the large deformation soft rock roadway.Therefore, the authors propose a high-stress and deformable anchorage system, which consists of a flat spin anchor , a large-opening pallets and a spherical nut. This paper discusses the design idea of the system, Mechanical property, Engineering characteristics. The numerical simulation of the anchorage system is carried out by means of FLAC3D software. Engineering practice has been carried out in the test tunnel. The monitoring data show that the maximum value of the roadway roof subsidence is 97 mm, and the maximum value of the two sides approaching is 161 mm. The reliability of the anchorage system is proved. It provides a reference for the support design of this type of roadway in the future. |
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