永夏煤田水文地质特征及开采技术条件评价
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摘要
全国六大优质无烟煤生产基地之一的永夏煤田,自20世纪70年代初,就陆续开展了煤炭资源的勘查工作,随着区内各矿区勘查阶段和勘查程度的逐步深入,部分矿区已相继建井开采。而针对整个煤田的水文地质及其开采技术条件的分析与评价,目前为止还没有一个完整的综合性成果。通过对区内各矿区、各勘查阶段成果及部分矿井开采资料的汇总和综合研究,认为区内的次级褶皱、断裂构造发育中等,构造复杂程度属中等;三煤组为砂岩裂隙水充水类型,水文地质条件属简单类型,二2煤层为底板砂岩裂隙充水和石炭系上统太原组灰岩裂隙岩溶水充水类型,水文地质条件属简单偏中等类型;煤层顶、底板总体属稳定-中等稳定;区内瓦斯普遍偏低,仅局部地段富集;除局部地段为二级高温区、地温增温异常外,其余大部为地温正常区和一级高温区。该研究为煤田或矿区的总体规划、矿井建设以及矿床开采中加强开采技术条件管理等方面,提供了基础性资料。
From early 1970s,the Yongxia coalfield,one of 6 large-sized high quality anthracite production bases in the country carried out coal resources exploration in succession.Along with progressively strike into deep-going mine area exploration and degree of exploration,part of the mining area is already mine constructed and mining one after the other.But in allusion to analysis and evaluation of the whole coalfield hydrogeological and mining technical conditions,still have not a comprehensive and integrated achievement.Through summarizing and comprehensive study of results of each mine area,each exploration stage and part of mining data,considered that secondary folds,faults are medium developed,medium structural complexity;the 3rd coal group belongs to sandstone fissure water filling type,hydrogeological condition simple category;coal seam II1 belongs to floor sandstone fissure water filling and upper Carboniferous Taiyuan Formation limestone fissure karst water filling type,hydrogeological condition simple partial to medium category;coal roof and floor in the mass belong to stable-medium stable;gas content is generally lean to low,enriched only in local sectors;except local sectors belong to grade II high temperature region and geotemperature increasing abnormal,mostly are normal and grade I high temperature regions.The study has provided basic information for coalfield or mining area general planning,mine construction and strengthening mining technical conditions management during mining.
From early 1970s,the Yongxia coalfield,one of 6 large-sized high quality anthracite production bases in the country carried out coal resources exploration in succession.Along with progressively strike into deep-going mine area exploration and degree of exploration,part of the mining area is already mine constructed and mining one after the other.But in allusion to analysis and evaluation of the whole coalfield hydrogeological and mining technical conditions,still have not a comprehensive and integrated achievement.Through summarizing and comprehensive study of results of each mine area,each exploration stage and part of mining data,considered that secondary folds,faults are medium developed,medium structural complexity;the 3rd coal group belongs to sandstone fissure water filling type,hydrogeological condition simple category;coal seam II1 belongs to floor sandstone fissure water filling and upper Carboniferous Taiyuan Formation limestone fissure karst water filling type,hydrogeological condition simple partial to medium category;coal roof and floor in the mass belong to stable-medium stable;gas content is generally lean to low,enriched only in local sectors;except local sectors belong to grade II high temperature region and geotemperature increasing abnormal,mostly are normal and grade I high temperature regions.The study has provided basic information for coalfield or mining area general planning,mine construction and strengthening mining technical conditions management during mining.
引文
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[7]河南省地质矿产勘查开发局第十一地质队.河南永城煤田新庄井田地质勘探报告[R].河南永城:河南省地质矿产勘查开发局第十一地质,1973.
[8]煤炭部一四七地质勘探队.河南永夏煤田车集井田精查地质报告[R].江苏徐州:煤炭部一四七地质勘探队,1985.煤层编号有煤尘爆炸性的矿区无煤尘爆炸性的矿区二2茴村、新庄、葛店、薛湖、新桥、车集城郊、陈四楼、顺和三2新庄、车集城郊、陈四楼、顺和三3新庄、车集城郊、陈四楼、顺和表3矿区煤尘爆炸性一览表Table 3 Data sheet of coal dust explosibility
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