| 四川古叙矿区石屏二矿龙潭组沉积特征及控煤因素分析 |
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| 引用本文： | 刘策,吴永贵,车怀庆.四川古叙矿区石屏二矿龙潭组沉积特征及控煤因素分析[J].中国煤炭地质,2013(10):7-11,25. |
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| 作者姓名： | 刘策 吴永贵 车怀庆 |
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| 作者单位： | 四川省煤田地质局一三五队,四川泸州,646000 |
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| 摘 要： | 通过石屏二矿勘查区含煤地层实测剖面及钻井岩心沉积学分析，认为龙潭组为陆相-海陆过渡相沉积，其中以海陆过渡相沉积为主，自下而上形成了风化残积体系、湖泊沉积体系、三角洲沉积体系及潟湖-潮坪沉积体系；C25煤层形成于泥炭沼泽相，C24煤层形成于滨湖相，C20、C19、C17、C14形成于三角洲平原相及分流间湾相，C11煤层形成于潟湖-潮坪相；勘查区最有利的聚煤环境为风化残积沉积和三角洲沉积体系，主要煤层除受沉积环境影响外，还受控于层间滑动断层及上覆砂岩冲刷作用的影响。
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| 关 键 词： | 龙潭组 沉积特征 控煤地质因素 石屏二矿 |
Longtan Formation Sedimentary Characteristics and Coal Controlling Geologic Factor Analysis in Shiping No.2 Coalmine, Gulin-Xuyong Mining Area, Sichuan |
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| Liu Ce
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Wu Yonggui
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Che Huaiqing.Longtan Formation Sedimentary Characteristics and Coal Controlling Geologic Factor Analysis in Shiping No.2 Coalmine, Gulin-Xuyong Mining Area, Sichuan[J].Coal Geology of China,2013(10):7-11,25. |
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| Authors: | Liu Ce Wu Yonggui Che Huaiqing |
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| Institution: | (No. 135 Exploration Team, Sichuan Bureau of Coal Geological Exploration, Luzhou, Sichuan 646000) |
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| Abstract: | Based on coal-beating strata measured sections and drill core sedimentary analyses, considered that the Longtan Formation belongs to terrestrial to transitional paralie facies sediments, mainly the later. From bottom to top have formed weathering residual, lacus- trine, deltaic and lagoon--tidal fiat sedimentary systems. Coal seam C25 was formed in peat bog facies; C24 in lake shore; C20, C19, C 17 and C 14 in delta plain and interdistributory bay facies; C 11 in lagoon--tidal fiat facies. The most favorable coal accumulation envi- ronments are weathering residual and deltaic sedimentary systems. Besides sedimentary environment, main coal seam impacting factors still have interlayer gliding faults and overlying sandstone scouring. |
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| Keywords: | Longtan Formation sedimentary characteristics coal controlling geologic factor Shiping No 2 coalmine |
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