渭北奥灰承压水矿区煤炭开采对水资源的影响及保护  

Influence and protection of confined water resources by coal seam mining in Weibei coal mining area

作　　者：冯洁[1,2,3] 王苏健 邓世龙 杜飞虎 黄克军 段会军 FENG Jie;WANG Sujian;DENG Shilong;DU Feihu;HUANG Kejun;DUAN Huijun(College of Geology and Environment Engineering,Xi＇an University of Science and Technology,Xi＇an 710054,China;Shaanxi Coal and Chemical Technology Institute Co.,Ltd.,Xi＇an 710065,China;Shaanxi Coal Chemical Industry Group Chenghe Mines Co.,Ltd.,Chengcheng 715200,China;Nation Engineering Research Center of Green Safe and E.ff~cient Coal Ming,Xi＇an 710065,China;Xi＇an Research Institute of China Coal Technology ＆ Engineering Group Corp,Xi＇an 710077,China)

机构地区：[1]西安科技大学地质与环境学院,陕西西安710054 [2]陕西煤业化工技术研究院有限责任公司,陕西西安710065 [3]煤炭绿色安全高效开采国家地方联合工程研究中心,陕西西安710065 [4]陕西陕煤澄合矿业有限公司,陕西澄城715200 [5]中煤科工集团西安研究院有限公司,陕西西安710077

出　　处：《煤炭学报》2018年第B06期269-276,共8页Journal of China Coal Society

基　　金：国家重点基础研究发展计划(973)资助项目(2014CB047103); 国家自然科学基金面上基金资助项目(41472234)

摘　　要：随我国煤炭开采向深部发展,奥灰承压水体上开采导致底板突水与其生态水位下降之间的矛盾日益突出。在分析渭北澄合矿区典型工作面5号煤层含(隔)水层组合特征的基础上,采用理论计算与现场实测综合确定5号煤层开采的底板破坏深度,从含水层结构破坏、生态水位、水质等方面研究了煤层开采对底板承压水的影响。结果表明:澄合矿区5号煤层开采底板破坏深度8~10.8 m,不同工作面斜长与底板岩性组合是影响该区底板破坏深度的主控因素,工作面斜长与底板破坏深度呈正相关,与底板含(隔)水层组合为负相关关系,煤层开采对底板含水层结构影响程度由大到小分别划分为Ⅰ,Ⅱ,Ⅲ级区,其中,Ⅰ级区主要分布于中南部和北部,面积为6.78 km2,占总面积的45.2%;煤层开采尚未对含水层水位、水质造成明显影响。提出以底板注浆加固技术为主保护水资源,稳定生态水位,为渭北地区煤炭工业健康发展找到有效途径。With the deep coal mining in China,the contradiction between the mine water inrush from aquifer underling the coal seam and the decline ecological water level is more and more serious.Based on the analysis of the assemblage characteristics between the No.5 coal seam and the aquifer（ auifuge） in Chenghe mining area,the present study is to investigate the depth of destroyed floor by combining the theoretical calculation and in-situ measurement.The influence of coal seam mining on the confined water underling the coal seam has been studied from the perspective of aquifer structure,ecological water level and water quality.The results indicate that the maximum depth of destroyed floor of the No.5 coal seam is 8-10.8 m,and the main control factors of the depth of destroyed floor are the dip length of working face and the lithologic association of floor. And there is a positive correlation between the dip length of working faceand the depth of destroyed floor,a negative correlation between lithologic association of floor and the depth of destroyed floor.Influence degree of the aquifer structure from large to small can be divided into Ⅰ,Ⅱ,Ⅲ level area,and the Ⅰlevel areas are mainly distributed in the central-south and north,which covers an area of 6. 78 km2,accounting for45. 2% of the total area; there is no obvious effect on water level and water quality.The paper puts forward a grouting reinforcement technology to protect water resources and stabilize the ecological water level in mining,and finds an effective way for the healthy development of coal industry in Weibei region.

关 键 词：奥灰承压水 煤层 水资源影响 生态水位 含水层保护 

分 类 号：TD745[矿业工程—矿井通风与安全]