Large Section of Soft Rock Gob-Side Entry Retaining Surrounding Rock Control
When cutting roof and pressure relief, the impact of blasting is especially obvious on the integrity of the roof of a large-section soft-rock roadway. The reasonable parameters of blasting roof cutting were studied through using Xiaohezui coal mine -12110 roadway as the engineering background. The L...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Hindawi Limited
2024-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2024/9942330 |
| _version_ | 1797338516582039552 |
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| author | Xizhi Wang Yongjian Zhu Ping Wang Heng Ren Peng Li Xianwen He Jianhua Lv |
| author_facet | Xizhi Wang Yongjian Zhu Ping Wang Heng Ren Peng Li Xianwen He Jianhua Lv |
| author_sort | Xizhi Wang |
| collection | DOAJ |
| description | When cutting roof and pressure relief, the impact of blasting is especially obvious on the integrity of the roof of a large-section soft-rock roadway. The reasonable parameters of blasting roof cutting were studied through using Xiaohezui coal mine -12110 roadway as the engineering background. The LS-Dyna simulation results show that: Interval blasting is beneficial to the expansion of interhole cracks and the damage to the perimeter of the hole is smaller than that of adjacent blasting, the lower the charge uncoupling factor, the larger the perimeter of the hole fragmentation zone. The mechanical model of the large-section soft-rock roadway after retrieval was established, the support resistance equation of the roadway side support and the gangue in the extraction area was derived, and the minimum support force required for the roadway side support was solved. According to the site situation, the roadway support scheme for different areas was proposed, and after continuous delamination monitoring of the roof plate, it was found that the amount of roof-plate delamination was finally stabilized within 180 mm after the working face was advanced, and the effect of leaving the roadway was good. |
| first_indexed | 2024-03-08T09:32:23Z |
| format | Article |
| id | doaj.art-e0427c83c44f458e9f667bac0c3a41be |
| institution | Directory Open Access Journal |
| issn | 1687-8094 |
| language | English |
| last_indexed | 2024-03-08T09:32:23Z |
| publishDate | 2024-01-01 |
| publisher | Hindawi Limited |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj.art-e0427c83c44f458e9f667bac0c3a41be2024-01-31T00:00:37ZengHindawi LimitedAdvances in Civil Engineering1687-80942024-01-01202410.1155/2024/9942330Large Section of Soft Rock Gob-Side Entry Retaining Surrounding Rock ControlXizhi Wang0Yongjian Zhu1Ping Wang2Heng Ren3Peng Li4Xianwen He5Jianhua Lv6School of Resources and Environment and Safety EngineeringSchool of Resources and Environment and Safety EngineeringSchool of Resources and Environment and Safety EngineeringSchool of Resources and Environment and Safety EngineeringSchool of Resources and Environment and Safety EngineeringXiaohezui Coal MineXiaohezui Coal MineWhen cutting roof and pressure relief, the impact of blasting is especially obvious on the integrity of the roof of a large-section soft-rock roadway. The reasonable parameters of blasting roof cutting were studied through using Xiaohezui coal mine -12110 roadway as the engineering background. The LS-Dyna simulation results show that: Interval blasting is beneficial to the expansion of interhole cracks and the damage to the perimeter of the hole is smaller than that of adjacent blasting, the lower the charge uncoupling factor, the larger the perimeter of the hole fragmentation zone. The mechanical model of the large-section soft-rock roadway after retrieval was established, the support resistance equation of the roadway side support and the gangue in the extraction area was derived, and the minimum support force required for the roadway side support was solved. According to the site situation, the roadway support scheme for different areas was proposed, and after continuous delamination monitoring of the roof plate, it was found that the amount of roof-plate delamination was finally stabilized within 180 mm after the working face was advanced, and the effect of leaving the roadway was good.http://dx.doi.org/10.1155/2024/9942330 |
| spellingShingle | Xizhi Wang Yongjian Zhu Ping Wang Heng Ren Peng Li Xianwen He Jianhua Lv Large Section of Soft Rock Gob-Side Entry Retaining Surrounding Rock Control Advances in Civil Engineering |
| title | Large Section of Soft Rock Gob-Side Entry Retaining Surrounding Rock Control |
| title_full | Large Section of Soft Rock Gob-Side Entry Retaining Surrounding Rock Control |
| title_fullStr | Large Section of Soft Rock Gob-Side Entry Retaining Surrounding Rock Control |
| title_full_unstemmed | Large Section of Soft Rock Gob-Side Entry Retaining Surrounding Rock Control |
| title_short | Large Section of Soft Rock Gob-Side Entry Retaining Surrounding Rock Control |
| title_sort | large section of soft rock gob side entry retaining surrounding rock control |
| url | http://dx.doi.org/10.1155/2024/9942330 |
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