A Method and Engineering Practice for a Fully Mechanized Caving Coalface to Rapidly Pass Through a Large Fault
One of the technical problems that must be solved in coal mine production is when the coalface rapidly crosses the fault. Based on the occurrence characteristics of the F<sub>6</sub> fault (maximum throw: 13.5 m) in the #3<sub>up</sub>1101 fully mechanized caving coalface at...
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2025-01-01
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| author | Wei Zhang Feili Yang Jingyu Chang Shengxun Zhao Bin Xu Jinyong Xiang |
| author_facet | Wei Zhang Feili Yang Jingyu Chang Shengxun Zhao Bin Xu Jinyong Xiang |
| author_sort | Wei Zhang |
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| description | One of the technical problems that must be solved in coal mine production is when the coalface rapidly crosses the fault. Based on the occurrence characteristics of the F<sub>6</sub> fault (maximum throw: 13.5 m) in the #3<sub>up</sub>1101 fully mechanized caving coalface at Gaozhuang Coal Mine, two different solutions allowing the coalface to pass through this fault were proposed, and the solution of pre-driven roadways with rock pillars was optimally determined. The main implementation steps of the method include designing the layout parameters of the pre-driven roadways, determining the width for rock pillars between the adjacent pre-driven roadways, construction of pre-driven roadways by smooth wall blasting, and controlling the surrounding rock deformation of the pre-driven roadways. The results of engineering practice show that it took only 23 days for this coalface to pass through fault F<sub>6</sub>, about one month shorter than the time required by traditional methods (e.g., proactively taking a detour). Moreover, this method helped achieve stable coal production (an 8.5 × 10<sup>4</sup> t increase), prevented much gangue from mixing with coal, reduced wear and tear on the mining equipment, and enhanced safety. The economic benefits delivered totaled about CNY 71.1 million. Therefore, this method can ensure continuous, safe, and efficient mining at the coalface, alleviating the tight situation of mine production succession. The results of this study can provide a good reference to help coalfaces rapidly move across faults under similar geological conditions in other mines. |
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| institution | Kabale University |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-01-01 |
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| spelling | doaj-art-e9c1cb2aed54490e8d8e40e79fca5ac72025-01-24T13:20:37ZengMDPI AGApplied Sciences2076-34172025-01-0115273110.3390/app15020731A Method and Engineering Practice for a Fully Mechanized Caving Coalface to Rapidly Pass Through a Large FaultWei Zhang0Feili Yang1Jingyu Chang2Shengxun Zhao3Bin Xu4Jinyong Xiang5State Key Laboratory for Fine Exploration and Intelligent Development of Coal Resources, China University of Mining & Technology, Xuzhou 221116, ChinaSchool of Mines, China University of Mining & Technology, Xuzhou 221116, ChinaSchool of Mines, China University of Mining & Technology, Xuzhou 221116, ChinaSchool of Mines, China University of Mining & Technology, Xuzhou 221116, ChinaSchool of Mines, China University of Mining & Technology, Xuzhou 221116, ChinaSchool of Mines, China University of Mining & Technology, Xuzhou 221116, ChinaOne of the technical problems that must be solved in coal mine production is when the coalface rapidly crosses the fault. Based on the occurrence characteristics of the F<sub>6</sub> fault (maximum throw: 13.5 m) in the #3<sub>up</sub>1101 fully mechanized caving coalface at Gaozhuang Coal Mine, two different solutions allowing the coalface to pass through this fault were proposed, and the solution of pre-driven roadways with rock pillars was optimally determined. The main implementation steps of the method include designing the layout parameters of the pre-driven roadways, determining the width for rock pillars between the adjacent pre-driven roadways, construction of pre-driven roadways by smooth wall blasting, and controlling the surrounding rock deformation of the pre-driven roadways. The results of engineering practice show that it took only 23 days for this coalface to pass through fault F<sub>6</sub>, about one month shorter than the time required by traditional methods (e.g., proactively taking a detour). Moreover, this method helped achieve stable coal production (an 8.5 × 10<sup>4</sup> t increase), prevented much gangue from mixing with coal, reduced wear and tear on the mining equipment, and enhanced safety. The economic benefits delivered totaled about CNY 71.1 million. Therefore, this method can ensure continuous, safe, and efficient mining at the coalface, alleviating the tight situation of mine production succession. The results of this study can provide a good reference to help coalfaces rapidly move across faults under similar geological conditions in other mines.https://www.mdpi.com/2076-3417/15/2/731fully mechanized caving coalfacelarge dip angleslarge-throw faultpre-driven roadwayscontinuous advance |
| spellingShingle | Wei Zhang Feili Yang Jingyu Chang Shengxun Zhao Bin Xu Jinyong Xiang A Method and Engineering Practice for a Fully Mechanized Caving Coalface to Rapidly Pass Through a Large Fault Applied Sciences fully mechanized caving coalface large dip angles large-throw fault pre-driven roadways continuous advance |
| title | A Method and Engineering Practice for a Fully Mechanized Caving Coalface to Rapidly Pass Through a Large Fault |
| title_full | A Method and Engineering Practice for a Fully Mechanized Caving Coalface to Rapidly Pass Through a Large Fault |
| title_fullStr | A Method and Engineering Practice for a Fully Mechanized Caving Coalface to Rapidly Pass Through a Large Fault |
| title_full_unstemmed | A Method and Engineering Practice for a Fully Mechanized Caving Coalface to Rapidly Pass Through a Large Fault |
| title_short | A Method and Engineering Practice for a Fully Mechanized Caving Coalface to Rapidly Pass Through a Large Fault |
| title_sort | method and engineering practice for a fully mechanized caving coalface to rapidly pass through a large fault |
| topic | fully mechanized caving coalface large dip angles large-throw fault pre-driven roadways continuous advance |
| url | https://www.mdpi.com/2076-3417/15/2/731 |
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