| 黄文,郭梁,陈康,熊炜.黔西南地瓜二井田17-2煤层赋存规律及控制因素分析[J].贵州地质,2019,36(2):141-148 |
| 黔西南地瓜二井田17-2煤层赋存规律及控制因素分析 |
| Analysis on Occurrence Characteristics and Control Factors of No/17-2 Coal Seam in Digua No.2 Minefield in Southwest Guizhou |
| 投稿时间：2018-07-27 |
| DOI： |
| 中文关键词: 地瓜二井田 赋存规律 控制因素 趋势面 贵州 |
| 英文关键词:Digua No.2 Mine Law of occurrence Control factors Trend surface |
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| 中文摘要: |
| 基于地瓜二井田龙潭组主煤层钻孔资料统计分析，结合趋势面法研究17-2煤层赋存特征，并从成煤前后的沉积及构造环境探讨研究井田主煤层赋存的控因，为今后煤矿开采提供了依据。结果表明:(1)17-2煤层厚煤带呈北东、南西向展布，东南、西北煤层减薄；煤层整体为单斜构造，煤层底板呈西北高、东南低的趋势。(2)成煤前，峨眉山组玄武岩的喷发起到了填平补齐的作用；成煤时，沉积环境主要为潮坪沉积，控制厚煤层发育呈北东、南西向展布，北西向由于地势增高，而南东向由于潮汐对煤层冲刷，导致煤层减薄；成煤后，以燕山期为主的构造运动对煤层造成一定程度的切割与破坏，造成煤层的连续性与稳定性下降。 |
| 英文摘要: |
| Based on the statistical analysis of the borehole data of the main coal seam in the Digua No.2 Mine, combined with the trend surface method, the stability of the 17-2 coal seam was studied, and the control factors of the occurrence of the main coal seam was studied in the mine field from the sedimentary and tectonic environment before and after coal formation. It provides a basis for coal mining in the future.The results show that: (1) thick coal belt of 17-2 coal seam is north east, southwest direction, southeast and northwest coal seam thinning; The whole coal seam is monoclinic structure, the coal seam floor is northwest high, southeast low trend. (2) Before the coal formation, the eruption of the Emeishan group basalt began to fill the role of filling; coal, the depositional environment is mainly tidal flat deposition, control thick coal seam development was north east, southwest to the northwest And the south-east trending caused by the erosion of the coal seam due to the tide on the coal seams. After the coal formation, the tectonic movement with the Yanshan period mainly caused a certain degree of cutting and destruction of the coal seam, resulting in the continuity and stability of the coal seam. |
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