Anchoring eccentricity features and rectifying devices for resin grouted bolt/cable bolt
The anchoring eccentricity of the bolt and cable bolt is a common problem in geotechnical support engineering and affects the ability of the bolt and cable bolt to control the rock mass to a certain extent. This paper reports on numerical simulation and laboratory experiments conducted to clarify th...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-09-01
|
| Series: | International Journal of Mining Science and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095268622000805 |
| _version_ | 1797984291982934016 |
|---|---|
| author | Shaowei Liu Deyin He Housheng Jia Mengxiong Fu Biao Hou |
| author_facet | Shaowei Liu Deyin He Housheng Jia Mengxiong Fu Biao Hou |
| author_sort | Shaowei Liu |
| collection | DOAJ |
| description | The anchoring eccentricity of the bolt and cable bolt is a common problem in geotechnical support engineering and affects the ability of the bolt and cable bolt to control the rock mass to a certain extent. This paper reports on numerical simulation and laboratory experiments conducted to clarify the effect of eccentricity on the anchoring quality of the bolt and cable bolt, and to establish an effective solution strategy. The results reveal that the anchoring eccentricity causes unbalanced stress distribution and the uncoordinated deformation of the resin layer, which results in higher stress and greater deformation of the resin layer at the near side of the rod body. Additionally, as the degree of anchoring eccentricity increases, the effect becomes more significant, and the resin layer of the anchoring system becomes more likely to undergo preferential failure locally, which weakens the load-bearing performance of the anchoring system. This paper develops an innovative bolt anchoring rectifying device (B-ARD) and cable bolt anchoring rectifying device (C-ARD) on the basis of the structural characteristics of the bolt and cable bolt to better ensure the anchoring effect of them. The working effects of these two devices were verified in detailed experiments and analysis. The experimental results show that the anchoring rectifying devices (ARD) improve and ensure the anchoring concentricity of the bolt and cable bolt, which will help improve the supporting performance of them. The paper provides a convenient and effective method for improving the anchoring concentricity of the bolt and cable bolt, and provides a concept and reference for technical research on improving the effect of roof bolting. |
| first_indexed | 2024-04-11T06:59:16Z |
| format | Article |
| id | doaj.art-b75558ac62544a26b4eade25c54e439e |
| institution | Directory Open Access Journal |
| issn | 2095-2686 |
| language | English |
| last_indexed | 2024-04-11T06:59:16Z |
| publishDate | 2022-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Mining Science and Technology |
| spelling | doaj.art-b75558ac62544a26b4eade25c54e439e2022-12-22T04:38:53ZengElsevierInternational Journal of Mining Science and Technology2095-26862022-09-0132510591073Anchoring eccentricity features and rectifying devices for resin grouted bolt/cable boltShaowei Liu0Deyin He1Housheng Jia2Mengxiong Fu3Biao Hou4School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China; State Collaborative Innovation Center of Coal Work Safety and Clean-Efficiency Utilization, Jiaozuo 454000, ChinaSchool of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China; Corresponding authors.School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China; Corresponding authors.School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, ChinaSchool of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, ChinaThe anchoring eccentricity of the bolt and cable bolt is a common problem in geotechnical support engineering and affects the ability of the bolt and cable bolt to control the rock mass to a certain extent. This paper reports on numerical simulation and laboratory experiments conducted to clarify the effect of eccentricity on the anchoring quality of the bolt and cable bolt, and to establish an effective solution strategy. The results reveal that the anchoring eccentricity causes unbalanced stress distribution and the uncoordinated deformation of the resin layer, which results in higher stress and greater deformation of the resin layer at the near side of the rod body. Additionally, as the degree of anchoring eccentricity increases, the effect becomes more significant, and the resin layer of the anchoring system becomes more likely to undergo preferential failure locally, which weakens the load-bearing performance of the anchoring system. This paper develops an innovative bolt anchoring rectifying device (B-ARD) and cable bolt anchoring rectifying device (C-ARD) on the basis of the structural characteristics of the bolt and cable bolt to better ensure the anchoring effect of them. The working effects of these two devices were verified in detailed experiments and analysis. The experimental results show that the anchoring rectifying devices (ARD) improve and ensure the anchoring concentricity of the bolt and cable bolt, which will help improve the supporting performance of them. The paper provides a convenient and effective method for improving the anchoring concentricity of the bolt and cable bolt, and provides a concept and reference for technical research on improving the effect of roof bolting.http://www.sciencedirect.com/science/article/pii/S2095268622000805Anchoring eccentricity featuresRectifying deviceRoof boltingAnchoring system performance |
| spellingShingle | Shaowei Liu Deyin He Housheng Jia Mengxiong Fu Biao Hou Anchoring eccentricity features and rectifying devices for resin grouted bolt/cable bolt International Journal of Mining Science and Technology Anchoring eccentricity features Rectifying device Roof bolting Anchoring system performance |
| title | Anchoring eccentricity features and rectifying devices for resin grouted bolt/cable bolt |
| title_full | Anchoring eccentricity features and rectifying devices for resin grouted bolt/cable bolt |
| title_fullStr | Anchoring eccentricity features and rectifying devices for resin grouted bolt/cable bolt |
| title_full_unstemmed | Anchoring eccentricity features and rectifying devices for resin grouted bolt/cable bolt |
| title_short | Anchoring eccentricity features and rectifying devices for resin grouted bolt/cable bolt |
| title_sort | anchoring eccentricity features and rectifying devices for resin grouted bolt cable bolt |
| topic | Anchoring eccentricity features Rectifying device Roof bolting Anchoring system performance |
| url | http://www.sciencedirect.com/science/article/pii/S2095268622000805 |
| work_keys_str_mv | AT shaoweiliu anchoringeccentricityfeaturesandrectifyingdevicesforresingroutedboltcablebolt AT deyinhe anchoringeccentricityfeaturesandrectifyingdevicesforresingroutedboltcablebolt AT houshengjia anchoringeccentricityfeaturesandrectifyingdevicesforresingroutedboltcablebolt AT mengxiongfu anchoringeccentricityfeaturesandrectifyingdevicesforresingroutedboltcablebolt AT biaohou anchoringeccentricityfeaturesandrectifyingdevicesforresingroutedboltcablebolt |