| 松藻矿区岩溶瓦斯“四位一体”防治技术及应用研究 |
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| 引用本文： | 董鹏举,李琼芳,董发勤,代群威,刘凡,宋娜,赵晓夏,崔杰,罗尧东,Xin Zhang,O''Driscoll Mike.松藻矿区岩溶瓦斯“四位一体”防治技术及应用研究[J].中国岩溶,2020,39(1):88-94. |
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| 作者姓名： | 董鹏举 李琼芳 董发勤 代群威 刘凡 宋娜 赵晓夏 崔杰 罗尧东 Xin Zhang O'Driscoll Mike |
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| 作者单位： | 1.重庆煤矿安全监察局救援指挥中心，重庆 401121 |
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| 基金项目： | 国家自然科学基金(41472309，41572035，41877288)； 四川省科技厅科技支撑项目(2016FZ0043) |
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| 摘 要： | 岩溶瓦斯问题已成为影响和制约煤矿安全生产的重要致灾因素。为保障岩溶影响区岩石巷道掘进过程中的施工安全,有效防治岩溶瓦斯灾害,以重庆松藻矿区为研究对象,分析了岩溶瓦斯来源及岩溶瓦斯赋存规律,提出了基于岩溶瓦斯小块段区域预测、梯级渐进式局部探测、近距离局部防治和安全防护措施的"四位一体"防治技术。现场应用表明,严格实施"四位一体"防治技术能够有效防止岩溶瓦斯事故。
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| 关 键 词： | 岩溶 瓦斯防治 四位一体 松藻矿区 |
Study on Bio-deposition properties of newborn travertine in the Huanglong area of the Xuebaoding watershed |
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| DONG Pengju,LI Qiongfang,DONG Faqin,DAI Qunwei,LIU Fan,SONG N,ZHAO Xiaoxi,CUI Jie,LUO Yaodong,Xin Zhang,O''Driscoll Mike.Study on Bio-deposition properties of newborn travertine in the Huanglong area of the Xuebaoding watershed[J].Carsologica Sinica,2020,39(1):88-94. |
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| Authors: | DONG Pengju LI Qiongfang DONG Faqin DAI Qunwei LIU Fan SONG N ZHAO Xiaoxi CUI Jie LUO Yaodong Xin Zhang O'Driscoll Mike |
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| Institution: | 1.Chongqing Coal Mine Safety Supervision Bureau Rescue Command Center, Chongqing 401121,China2.Coal Industry Bureau of Chongqing, Chongqing 401121,China3.Chongqing Energy Investment Group Technology Co., Ltd., Chongqing 400061, China4.Chongqing Diran Mine Engineering Design Company, Chongqing 401121,China |
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| Abstract: | Karst developed well in coal measures strata in the Chongqing area, and some karst contains a large amount of poisonous gas. When karst is uncovered, poisonous gas may be to exhale or outburst. The main component of the poisonous gas is methane. The Songzao mining area hosts the most karst in the Chongqing region, while the Shihao coal mine and Datong No.1 mine are the most serious karst in the Songzao mining area. The coal-bearing strata in this mining area are Longtan formation of upper Permian. The thickness of coal measures strata is 66 meters to 80 meters, with 10-12 layers of coal-bearing strata. The total thickness of coal is 4.01 meters to 9.88 m, 7.58 m on average. Among them, M6, M7 and M11 coal seams in local mineable seams have outburst danger, while the M8 coal seam in the whole area is a serious outburst coal seam.The problem of karst gas has become an important disaster-causing factor affecting and restricting the safety of coal mine production. In order to ensure the construction safety of rock roadways in karst-affected areas and effectively prevent and control the karst gas disaster, the source and the occurrence law of karst gas in the Songzao mining area are analyzed by means of theoretical analysis and site tests. Results show that the main source of karst gas is the coal measures strata located at the top of Maokou limestone, i.e. M12, M11, M10, M9, M8, M7, and M6 coal seams in the mining area. The broom structure, semi-filling karst cave and concealed structure are gas enrichment areas, and low permeability of overburden rock in coal measures strata is also a key factor for generation of karst gas. The 12# gas roadway in the north three mining area of the Shihao coal mine and the W1603E gas roadway in the west No.1 mining area of Datong No.1 coal mine are selected as the test roadways. The "four-in-one" prevention and control technology of karst gas is adopted, which includes，(1) Prediction of small karst gas blocks; (2) Step-by-step local detection measures consisting of geophysical exploration, drilling and drill rod detection; (3) Local karst gas prevention and control technology with winding, draining, ventilating and plugging; (4) Safety protection measures. On-site application shows that strict implementation of "four in one" prevention and control technology can effectively prevent karst gas accidents, and can effectively use karst gas to ensure safe and orderly roadway excavation. |
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| Keywords: | karst gas prevention and control four in one Songzao mining area |
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