Research on Hydraulic Fracturing Technology for Roof Stratigraphic Horizon in Coal Pillar Gob-Side Roadway
The return roadway in Limin Coal Mine experiences strong mine pressure during the mining work of the I030902 working face, which poses potential safety hazards to production and management. Therefore, hydraulic fracturing is used to relieve pressure on the free coal pillar roof. Hydraulic fracture s...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-04-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/15/9/4759 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849312795153137664 |
|---|---|
| author | Tong Sun Zhu Li Qingyuan He Dan Ma Benben Liu Xuefeng Gao |
| author_facet | Tong Sun Zhu Li Qingyuan He Dan Ma Benben Liu Xuefeng Gao |
| author_sort | Tong Sun |
| collection | DOAJ |
| description | The return roadway in Limin Coal Mine experiences strong mine pressure during the mining work of the I030902 working face, which poses potential safety hazards to production and management. Therefore, hydraulic fracturing is used to relieve pressure on the free coal pillar roof. Hydraulic fracture simulation tests using gelatin materials were conducted, and the propagation of the hydraulic fracturing cracks in gelatin simulating different key strata was obtained, which led to the design of the hydraulic fracturing used in the I030902 working face at Limin Coal Mine. According to the analysis of the on-site tests, after fracturing, the roof pressure decreased by 17.8%, the average pressure step distance reduced by 18.0%, the average daily rate of the roof and floor convergence decreased by 63.86%, and the average daily rate of the roof and floor convergence was reduced by 72.4%. Therefore, the feasibility of the hydraulic fracturing in weak structure formation in hard roof strata and roadway deformation control has been verified, providing a theoretical foundation and on-site date for the relief of free roadway roof pressure. |
| format | Article |
| id | doaj-art-1771e0ea0c3848e5a07fdcda65b7dee3 |
| institution | Kabale University |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-1771e0ea0c3848e5a07fdcda65b7dee32025-08-20T03:52:57ZengMDPI AGApplied Sciences2076-34172025-04-01159475910.3390/app15094759Research on Hydraulic Fracturing Technology for Roof Stratigraphic Horizon in Coal Pillar Gob-Side RoadwayTong Sun0Zhu Li1Qingyuan He2Dan Ma3Benben Liu4Xuefeng Gao5Shaanxi Bureau of State Mine Safety Supervision Bureau, Xi’an 710001, ChinaInner Mongolia Limin Coal Char Co., CHN Energy Wuhai Energy Company, Ordos 016064, ChinaState Key Laboratory for Fine Exploration and Intelligent Development of Coal Resources, China University of Mining and Technology, Xuzhou 221116, ChinaKey Laboratory of Deep Coal Resource Mining of Ministry of Education, School of Mines, China University of Mining and Technology, Xuzhou 221116, ChinaKey Laboratory of Deep Coal Resource Mining of Ministry of Education, School of Mines, China University of Mining and Technology, Xuzhou 221116, ChinaKey Laboratory of Deep Coal Resource Mining of Ministry of Education, School of Mines, China University of Mining and Technology, Xuzhou 221116, ChinaThe return roadway in Limin Coal Mine experiences strong mine pressure during the mining work of the I030902 working face, which poses potential safety hazards to production and management. Therefore, hydraulic fracturing is used to relieve pressure on the free coal pillar roof. Hydraulic fracture simulation tests using gelatin materials were conducted, and the propagation of the hydraulic fracturing cracks in gelatin simulating different key strata was obtained, which led to the design of the hydraulic fracturing used in the I030902 working face at Limin Coal Mine. According to the analysis of the on-site tests, after fracturing, the roof pressure decreased by 17.8%, the average pressure step distance reduced by 18.0%, the average daily rate of the roof and floor convergence decreased by 63.86%, and the average daily rate of the roof and floor convergence was reduced by 72.4%. Therefore, the feasibility of the hydraulic fracturing in weak structure formation in hard roof strata and roadway deformation control has been verified, providing a theoretical foundation and on-site date for the relief of free roadway roof pressure.https://www.mdpi.com/2076-3417/15/9/4759roof reliefsimilar simulationhydraulic fracture re-orientationkey strata weakening |
| spellingShingle | Tong Sun Zhu Li Qingyuan He Dan Ma Benben Liu Xuefeng Gao Research on Hydraulic Fracturing Technology for Roof Stratigraphic Horizon in Coal Pillar Gob-Side Roadway Applied Sciences roof relief similar simulation hydraulic fracture re-orientation key strata weakening |
| title | Research on Hydraulic Fracturing Technology for Roof Stratigraphic Horizon in Coal Pillar Gob-Side Roadway |
| title_full | Research on Hydraulic Fracturing Technology for Roof Stratigraphic Horizon in Coal Pillar Gob-Side Roadway |
| title_fullStr | Research on Hydraulic Fracturing Technology for Roof Stratigraphic Horizon in Coal Pillar Gob-Side Roadway |
| title_full_unstemmed | Research on Hydraulic Fracturing Technology for Roof Stratigraphic Horizon in Coal Pillar Gob-Side Roadway |
| title_short | Research on Hydraulic Fracturing Technology for Roof Stratigraphic Horizon in Coal Pillar Gob-Side Roadway |
| title_sort | research on hydraulic fracturing technology for roof stratigraphic horizon in coal pillar gob side roadway |
| topic | roof relief similar simulation hydraulic fracture re-orientation key strata weakening |
| url | https://www.mdpi.com/2076-3417/15/9/4759 |
| work_keys_str_mv | AT tongsun researchonhydraulicfracturingtechnologyforroofstratigraphichorizonincoalpillargobsideroadway AT zhuli researchonhydraulicfracturingtechnologyforroofstratigraphichorizonincoalpillargobsideroadway AT qingyuanhe researchonhydraulicfracturingtechnologyforroofstratigraphichorizonincoalpillargobsideroadway AT danma researchonhydraulicfracturingtechnologyforroofstratigraphichorizonincoalpillargobsideroadway AT benbenliu researchonhydraulicfracturingtechnologyforroofstratigraphichorizonincoalpillargobsideroadway AT xuefenggao researchonhydraulicfracturingtechnologyforroofstratigraphichorizonincoalpillargobsideroadway |