Water inrush mechanism of roof bed-separation and surface-underground combination treatment technology in Yuanzigou Coal Mine
Yuanzigou Coal Mine belongs to Yonglong Mining Area of Huanglong Jurassic Coalfield, which is located in the south-central part of the Ordos Basin, and the main water hazard type is bed-separation water inrush. Using the borehole flushing fluid leakage and borehole television observation methods, th...
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Editorial Office of Safety in Coal Mines
2024-11-01
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| Series: | Meikuang Anquan |
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| Online Access: | https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20240877 |
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| author | Lin DU Jianghua LI Yaobin LI Ke HUA Weicheng SUN Pengfei LI Haozhe ZHANG |
| author_facet | Lin DU Jianghua LI Yaobin LI Ke HUA Weicheng SUN Pengfei LI Haozhe ZHANG |
| author_sort | Lin DU |
| collection | DOAJ |
| description | Yuanzigou Coal Mine belongs to Yonglong Mining Area of Huanglong Jurassic Coalfield, which is located in the south-central part of the Ordos Basin, and the main water hazard type is bed-separation water inrush. Using the borehole flushing fluid leakage and borehole television observation methods, the cracking and production ratio of the No.2 coal seam fully mechanized mining face was determined by designing the pre-mining and post-mining comparison boreholes. In order to ensure the safe mining of the 1012102 working face, according to the measured results of mining overburden failure and the characteristics of the geological structure of the rock layer, based on the key layer theory and the thin plate theory, the bed-separation development position, the risk of the water inrush and the mud and sand collapse of the bed-separation were evaluated. In view of the characteristics of this kind of bed-separation water inrush with hysteresis, periodicity, accompanied by secondary disasters such as sand collapse and roof pressure, a layered water treatment technology based on the combination of surface through-type drainage hole and underground dredging hole well was proposed. The research results show that the crack-to-mining ratio is 23.68 under the geological and mining conditions, and the conditions for the formation of bed-separation in Luohe Formation, Yijun Formation and Anding Formation are all available, and the volume of the separation cavity is large, and the mine is mainly threatened by the roof separation water hazard, and the sediment will be carried once the water inrush occurs. The change of water level data and the supplementary detection of ground electric method in the mining process realize the all-round monitoring of the overlying rock separated layer water, form a pre-control technology system for the separated layer water, and ensure the safe mining of the mine. |
| format | Article |
| id | doaj-art-08da5f93c2704758a3d1136af7d3920d |
| institution | Kabale University |
| issn | 1003-496X |
| language | zho |
| publishDate | 2024-11-01 |
| publisher | Editorial Office of Safety in Coal Mines |
| record_format | Article |
| series | Meikuang Anquan |
| spelling | doaj-art-08da5f93c2704758a3d1136af7d3920d2024-11-11T08:20:39ZzhoEditorial Office of Safety in Coal MinesMeikuang Anquan1003-496X2024-11-01551117618510.13347/j.cnki.mkaq.20240877gMKAQ20240877Water inrush mechanism of roof bed-separation and surface-underground combination treatment technology in Yuanzigou Coal MineLin DU0Jianghua LI1Yaobin LI2Ke HUA3Weicheng SUN4Pengfei LI5Haozhe ZHANG6Shaanxi Linbei Coal Development Co., Ltd., Baoji 721000, ChinaChina Coal Research Institute, Beijing 100013, ChinaShaanxi Linbei Coal Development Co., Ltd., Baoji 721000, ChinaChinese Institute of Coal Science, Beijing 100013, ChinaShaanxi Linbei Coal Development Co., Ltd., Baoji 721000, ChinaShaanxi Linbei Coal Development Co., Ltd., Baoji 721000, ChinaChina Coal Research Institute, Beijing 100013, ChinaYuanzigou Coal Mine belongs to Yonglong Mining Area of Huanglong Jurassic Coalfield, which is located in the south-central part of the Ordos Basin, and the main water hazard type is bed-separation water inrush. Using the borehole flushing fluid leakage and borehole television observation methods, the cracking and production ratio of the No.2 coal seam fully mechanized mining face was determined by designing the pre-mining and post-mining comparison boreholes. In order to ensure the safe mining of the 1012102 working face, according to the measured results of mining overburden failure and the characteristics of the geological structure of the rock layer, based on the key layer theory and the thin plate theory, the bed-separation development position, the risk of the water inrush and the mud and sand collapse of the bed-separation were evaluated. In view of the characteristics of this kind of bed-separation water inrush with hysteresis, periodicity, accompanied by secondary disasters such as sand collapse and roof pressure, a layered water treatment technology based on the combination of surface through-type drainage hole and underground dredging hole well was proposed. The research results show that the crack-to-mining ratio is 23.68 under the geological and mining conditions, and the conditions for the formation of bed-separation in Luohe Formation, Yijun Formation and Anding Formation are all available, and the volume of the separation cavity is large, and the mine is mainly threatened by the roof separation water hazard, and the sediment will be carried once the water inrush occurs. The change of water level data and the supplementary detection of ground electric method in the mining process realize the all-round monitoring of the overlying rock separated layer water, form a pre-control technology system for the separated layer water, and ensure the safe mining of the mine.https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20240877mine water disaster controlwater inrush mechanism of bed-separationhazard assessmentsurface relief holeelectrical explorationunderground dredging hole |
| spellingShingle | Lin DU Jianghua LI Yaobin LI Ke HUA Weicheng SUN Pengfei LI Haozhe ZHANG Water inrush mechanism of roof bed-separation and surface-underground combination treatment technology in Yuanzigou Coal Mine Meikuang Anquan mine water disaster control water inrush mechanism of bed-separation hazard assessment surface relief hole electrical exploration underground dredging hole |
| title | Water inrush mechanism of roof bed-separation and surface-underground combination treatment technology in Yuanzigou Coal Mine |
| title_full | Water inrush mechanism of roof bed-separation and surface-underground combination treatment technology in Yuanzigou Coal Mine |
| title_fullStr | Water inrush mechanism of roof bed-separation and surface-underground combination treatment technology in Yuanzigou Coal Mine |
| title_full_unstemmed | Water inrush mechanism of roof bed-separation and surface-underground combination treatment technology in Yuanzigou Coal Mine |
| title_short | Water inrush mechanism of roof bed-separation and surface-underground combination treatment technology in Yuanzigou Coal Mine |
| title_sort | water inrush mechanism of roof bed separation and surface underground combination treatment technology in yuanzigou coal mine |
| topic | mine water disaster control water inrush mechanism of bed-separation hazard assessment surface relief hole electrical exploration underground dredging hole |
| url | https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20240877 |
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