| 新密市白石沟井田二1煤层充水因素分析 |
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| 引用本文： | 王军强,崔蓓蕾.新密市白石沟井田二1煤层充水因素分析[J].中国煤炭地质,2008(7):38-42. |
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| 作者姓名： | 王军强 崔蓓蕾 |
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| 作者单位： | 河南省地质矿产勘查开发局第二地质勘查院,河南许昌461000 |
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| 摘 要： | 白石沟井田是近年来探明的大巾型井田，位于五指岭-白寨背斜东端之南翼，新密-新郑复向斜之北翼．岗亚腰断层和梁山断层之间的地垒构造上，其基本构造形态为-向东倾伏的宽缓背斜。二叠系下统山西组二1煤为主要开采煤层，探明二1煤资源量7206×10^7t。分析了井田含水岩组及其富水性，对断层带及其富水特征进行了研究，从矿床（二1煤层）充水的水源、通道、机理三个方面分析了矿床充水因素，指出二1煤层的主要充水水源为该煤层底板的石炭系岩溶裂隙-承压水，充水通道为断层带和灰岩的岩溶裂隙发育带，充水机理为矿压及高水头压力冲破煤层底板阻水层阻力，形成底鼓，迅速突水。认为该井田水文地质勘查类型为三类二型，提出了排除与隔离地表水体，预留防水安全煤柱，灌浆辅助采掘的井田突水防范措施。
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| 关 键 词： | 富水性 充水因素 二1煤层 白石沟井田 |
No.Ⅱ1 Coal Seam Water Filling Factor Analysis in Baishigou Minefield,Xinmi City |
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| Wang Junqiang,Cui Beilei.No.Ⅱ1 Coal Seam Water Filling Factor Analysis in Baishigou Minefield,Xinmi City[J].Coal Geology of China,2008(7):38-42. |
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| Authors: | Wang Junqiang Cui Beilei |
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| Institution: | (The Second Geological Exploration Institute, Henan Bureau of Geological and Mineral Exploration and Exploitation, Xuchang, Henan 461000) |
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| Abstract: | The Baishigou minefield is a larger medium minefield demonstrated in recent years, it locates at eastern south limb of Wuzhiling-Baizhai anticline, on a graben between Gangyayao and Liangshan faults, basic structural form is a broad and gentle anticline plunging east. Lower Permian Shanxi Formation No.Ⅱ1 coal is the main mining coal seam, demonstrated coal resources 7.206×10^7 ton. Analyzed minefield water bearing strata and its water yield property and studied fault zones and their water yield characteristics. Analyzed deposit water filling factors from deposit （No.Ⅱ1 coal seam） water filling source, channel, mechanism 3 aspects, pointed out No.Ⅱ1 coal seam main water filling source is floor Carboniferous karstic fissure confined water, water channel is fault zone and karstic fracture developed zone and water filling mechanism is mine pressure and high head pressure breaking through floor water-resisting layer to form floor heave and water bursting. Hydrogeological exploration classification of the minefield belongs to category Ⅲ type Ⅱ, put forward minefield water bursting prevention measures of to remove and isolate surface water bodies, set barrier safety pillar, grouting assisted winning and opening. |
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| Keywords: | water yield property water filling factor No Ⅱ1 coal seam Baishigou minefield |
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