Study on failure behaviors and control technology of surrounding rock in a weakly cemented soft rock roadway: A case study
During coal mining, the deformation and failure of a weakly cemented soft rock roadway roof could cause difficulties for roadway support. In this paper, a combination of on-site measurement and theoretical analysis is used to solve this issue. Firstly this paper investigates the in situ deformation...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2023-05-01
|
| Series: | Frontiers in Earth Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2023.1153753/full |
| _version_ | 1797820876579667968 |
|---|---|
| author | Kai Zhou Kai Zhou Fenghai Yu Fenghai Yu Yunliang Tan Yunliang Tan Weiyao Guo Weiyao Guo Tongbin Zhao Tongbin Zhao |
| author_facet | Kai Zhou Kai Zhou Fenghai Yu Fenghai Yu Yunliang Tan Yunliang Tan Weiyao Guo Weiyao Guo Tongbin Zhao Tongbin Zhao |
| author_sort | Kai Zhou |
| collection | DOAJ |
| description | During coal mining, the deformation and failure of a weakly cemented soft rock roadway roof could cause difficulties for roadway support. In this paper, a combination of on-site measurement and theoretical analysis is used to solve this issue. Firstly this paper investigates the in situ deformation and failure behaviors of a soft rock roadway in a mine in Western China. Then, the failure mechanism and corresponding support principles are discussed and given. Third, various support schemes (bolt and cable reinforcement optimization, grouting, and single prop + top beam combined reinforcement) are proposed and tested. Results show the support capacity can meet the requirements after optimizing the bolt and cable reinforcement support. Due to the development of roof cracks and low grouting pressure, the grouting slurry did not completely fill the roof cracks, resulting in a poor roof control effect. The passive support of a “single prop + top beam” can effectively control the roof subsidence and achieve good application results. |
| first_indexed | 2024-03-13T09:45:42Z |
| format | Article |
| id | doaj.art-9d623a177bbf40b5b73d94bb8e1ab635 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-03-13T09:45:42Z |
| publishDate | 2023-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-9d623a177bbf40b5b73d94bb8e1ab6352023-05-25T04:21:26ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632023-05-011110.3389/feart.2023.11537531153753Study on failure behaviors and control technology of surrounding rock in a weakly cemented soft rock roadway: A case studyKai Zhou0Kai Zhou1Fenghai Yu2Fenghai Yu3Yunliang Tan4Yunliang Tan5Weiyao Guo6Weiyao Guo7Tongbin Zhao8Tongbin Zhao9College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao, ChinaState Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, ChinaCollege of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao, ChinaState Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, ChinaCollege of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao, ChinaState Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, ChinaCollege of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao, ChinaState Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, ChinaCollege of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao, ChinaState Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao, ChinaDuring coal mining, the deformation and failure of a weakly cemented soft rock roadway roof could cause difficulties for roadway support. In this paper, a combination of on-site measurement and theoretical analysis is used to solve this issue. Firstly this paper investigates the in situ deformation and failure behaviors of a soft rock roadway in a mine in Western China. Then, the failure mechanism and corresponding support principles are discussed and given. Third, various support schemes (bolt and cable reinforcement optimization, grouting, and single prop + top beam combined reinforcement) are proposed and tested. Results show the support capacity can meet the requirements after optimizing the bolt and cable reinforcement support. Due to the development of roof cracks and low grouting pressure, the grouting slurry did not completely fill the roof cracks, resulting in a poor roof control effect. The passive support of a “single prop + top beam” can effectively control the roof subsidence and achieve good application results.https://www.frontiersin.org/articles/10.3389/feart.2023.1153753/fullweakly cemented soft rocksurrounding rock failuresupport optimizationfield testinstability mechanism |
| spellingShingle | Kai Zhou Kai Zhou Fenghai Yu Fenghai Yu Yunliang Tan Yunliang Tan Weiyao Guo Weiyao Guo Tongbin Zhao Tongbin Zhao Study on failure behaviors and control technology of surrounding rock in a weakly cemented soft rock roadway: A case study Frontiers in Earth Science weakly cemented soft rock surrounding rock failure support optimization field test instability mechanism |
| title | Study on failure behaviors and control technology of surrounding rock in a weakly cemented soft rock roadway: A case study |
| title_full | Study on failure behaviors and control technology of surrounding rock in a weakly cemented soft rock roadway: A case study |
| title_fullStr | Study on failure behaviors and control technology of surrounding rock in a weakly cemented soft rock roadway: A case study |
| title_full_unstemmed | Study on failure behaviors and control technology of surrounding rock in a weakly cemented soft rock roadway: A case study |
| title_short | Study on failure behaviors and control technology of surrounding rock in a weakly cemented soft rock roadway: A case study |
| title_sort | study on failure behaviors and control technology of surrounding rock in a weakly cemented soft rock roadway a case study |
| topic | weakly cemented soft rock surrounding rock failure support optimization field test instability mechanism |
| url | https://www.frontiersin.org/articles/10.3389/feart.2023.1153753/full |
| work_keys_str_mv | AT kaizhou studyonfailurebehaviorsandcontroltechnologyofsurroundingrockinaweaklycementedsoftrockroadwayacasestudy AT kaizhou studyonfailurebehaviorsandcontroltechnologyofsurroundingrockinaweaklycementedsoftrockroadwayacasestudy AT fenghaiyu studyonfailurebehaviorsandcontroltechnologyofsurroundingrockinaweaklycementedsoftrockroadwayacasestudy AT fenghaiyu studyonfailurebehaviorsandcontroltechnologyofsurroundingrockinaweaklycementedsoftrockroadwayacasestudy AT yunliangtan studyonfailurebehaviorsandcontroltechnologyofsurroundingrockinaweaklycementedsoftrockroadwayacasestudy AT yunliangtan studyonfailurebehaviorsandcontroltechnologyofsurroundingrockinaweaklycementedsoftrockroadwayacasestudy AT weiyaoguo studyonfailurebehaviorsandcontroltechnologyofsurroundingrockinaweaklycementedsoftrockroadwayacasestudy AT weiyaoguo studyonfailurebehaviorsandcontroltechnologyofsurroundingrockinaweaklycementedsoftrockroadwayacasestudy AT tongbinzhao studyonfailurebehaviorsandcontroltechnologyofsurroundingrockinaweaklycementedsoftrockroadwayacasestudy AT tongbinzhao studyonfailurebehaviorsandcontroltechnologyofsurroundingrockinaweaklycementedsoftrockroadwayacasestudy |