Characteristics of the Deformation and Fracture of Overlaying Slopes in Roof Cutting
In order to alleviate the risk of landslides on high and steep slopes during excavation, slope protection coal pillars are commonly increased at the site to maintain slope stability, which causes a considerable waste of coal. In roof cutting for pressure relief at quarries, the movement of the overb...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-04-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/15/9/4694 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850278907343798272 |
|---|---|
| author | Zhe Cui Mei Wang Chenlong Wang Yongkang Yang |
| author_facet | Zhe Cui Mei Wang Chenlong Wang Yongkang Yang |
| author_sort | Zhe Cui |
| collection | DOAJ |
| description | In order to alleviate the risk of landslides on high and steep slopes during excavation, slope protection coal pillars are commonly increased at the site to maintain slope stability, which causes a considerable waste of coal. In roof cutting for pressure relief at quarries, the movement of the overburden structure is artificially regulated by blasting. However, there is a lack of theoretical research on the impact on the slope movement. In order to explore how blasting roof cutting affects the deformation and fracture of slopes, a case study of the 10101 working face of Xinyuan Coal Mine was carried out. The particle flow code numerical simulation of the mining with different heights of roof cutting was performed to analyze the impact of the height of roof cutting on the movement of overlaying rock formation, the development of slope fractures, stress distribution, collapse angle, slope deformation and fracture, etc. The research results are as follows: the overlaying rock formation can be divided into the stable zone, the rotary zone and the subsidence area by displacement; a reasonable roof-cutting height allows the cutting and crushing of the overlaying rock formation, as a result of which the movement boundary is offset to cutting line and the slope is within the stable area; at the same time, the horizontal displacement of the rock formation in the rotary zone, the collapse angle and the stress at slope bottom are reduced, which controls the deformation and failure of slope by inhibiting the development of cracks at slope bottom and reducing the rotation of the rotary zone to the goaf zone. The research results provide certain references for controlling ground sedimentation and slopes in blasting roof cutting. |
| format | Article |
| id | doaj-art-16d3e5de11fd47c0a78a020a88e91d22 |
| institution | OA Journals |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-16d3e5de11fd47c0a78a020a88e91d222025-08-20T01:49:16ZengMDPI AGApplied Sciences2076-34172025-04-01159469410.3390/app15094694Characteristics of the Deformation and Fracture of Overlaying Slopes in Roof CuttingZhe Cui0Mei Wang1Chenlong Wang2Yongkang Yang3College of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaCollege of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaKey Laboratory of In-Situ-Property-Improving Mining of Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, ChinaKey Laboratory of In-Situ-Property-Improving Mining of Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, ChinaIn order to alleviate the risk of landslides on high and steep slopes during excavation, slope protection coal pillars are commonly increased at the site to maintain slope stability, which causes a considerable waste of coal. In roof cutting for pressure relief at quarries, the movement of the overburden structure is artificially regulated by blasting. However, there is a lack of theoretical research on the impact on the slope movement. In order to explore how blasting roof cutting affects the deformation and fracture of slopes, a case study of the 10101 working face of Xinyuan Coal Mine was carried out. The particle flow code numerical simulation of the mining with different heights of roof cutting was performed to analyze the impact of the height of roof cutting on the movement of overlaying rock formation, the development of slope fractures, stress distribution, collapse angle, slope deformation and fracture, etc. The research results are as follows: the overlaying rock formation can be divided into the stable zone, the rotary zone and the subsidence area by displacement; a reasonable roof-cutting height allows the cutting and crushing of the overlaying rock formation, as a result of which the movement boundary is offset to cutting line and the slope is within the stable area; at the same time, the horizontal displacement of the rock formation in the rotary zone, the collapse angle and the stress at slope bottom are reduced, which controls the deformation and failure of slope by inhibiting the development of cracks at slope bottom and reducing the rotation of the rotary zone to the goaf zone. The research results provide certain references for controlling ground sedimentation and slopes in blasting roof cutting.https://www.mdpi.com/2076-3417/15/9/4694slope stabilityroof cutting and pressure reliefhigh and steep excavated slopemovement partitionsurface mining subsidence |
| spellingShingle | Zhe Cui Mei Wang Chenlong Wang Yongkang Yang Characteristics of the Deformation and Fracture of Overlaying Slopes in Roof Cutting Applied Sciences slope stability roof cutting and pressure relief high and steep excavated slope movement partition surface mining subsidence |
| title | Characteristics of the Deformation and Fracture of Overlaying Slopes in Roof Cutting |
| title_full | Characteristics of the Deformation and Fracture of Overlaying Slopes in Roof Cutting |
| title_fullStr | Characteristics of the Deformation and Fracture of Overlaying Slopes in Roof Cutting |
| title_full_unstemmed | Characteristics of the Deformation and Fracture of Overlaying Slopes in Roof Cutting |
| title_short | Characteristics of the Deformation and Fracture of Overlaying Slopes in Roof Cutting |
| title_sort | characteristics of the deformation and fracture of overlaying slopes in roof cutting |
| topic | slope stability roof cutting and pressure relief high and steep excavated slope movement partition surface mining subsidence |
| url | https://www.mdpi.com/2076-3417/15/9/4694 |
| work_keys_str_mv | AT zhecui characteristicsofthedeformationandfractureofoverlayingslopesinroofcutting AT meiwang characteristicsofthedeformationandfractureofoverlayingslopesinroofcutting AT chenlongwang characteristicsofthedeformationandfractureofoverlayingslopesinroofcutting AT yongkangyang characteristicsofthedeformationandfractureofoverlayingslopesinroofcutting |