高强度煤炭开采对烧变岩泉的影响

发布时间：2018-04-30 21:35

本文选题：保水采煤 + 烧变岩泉　；参考：《煤炭科学技术》2017年07期

【摘要】：为探明高强度煤炭开采对烧变岩泉的影响,有效保护地下水资源,采用现场调查的方法对煤炭开采前后烧变岩泉的变化情况进行分析。结果表明:1994年煤炭开采之前榆林、神木、府谷等地区有烧变岩泉405个,总流量766.182 L/s。受20年来高强度煤炭开采等多种因素的影响,2015年现存烧变岩泉62个,总流量145.176 3 L/s。20年来烧变岩泉的数量衰减了93.58%,流量衰减了81.06%。基于烧变岩裂隙含水层水文地质特征,将采煤对烧变岩泉的影响机理划分为3类,即烧变岩侧边采煤造成烧变岩补给源萨拉乌苏组疏干,烧变岩下采煤地下水渗漏,地下水分水岭袭夺造成烧变岩泉流量衰减等。
[Abstract]:In order to find out the influence of high intensity coal mining on burned rock spring and to protect groundwater resources effectively, the variation of burned rock spring before and after coal mining was analyzed by the method of field investigation. The results show that there are 405 burned rock springs in Yulin, Shenmu and Fugu areas before coal mining in 1994, with a total flow rate of 766.182 L / s. Under the influence of many factors such as high intensity coal mining in the past 20 years, 62 burned rock springs existed in 2015, and the total flow rate of 145.176 3 L/s.20 has decreased 93.58% and 81.066% respectively. Based on the hydrogeological characteristics of the fractured aquifer, the influence mechanism of coal mining on the pyrogenic rock spring is divided into three categories, that is, coal mining on the side of the burnt rock causes the drying of the Sarawusu formation, the supply source of the burnt rock, and the underground water leakage of the coal mining under the burnt rock. Groundwater watershed attack causes the flow attenuation of burned rock springs and so on.
【作者单位】：矿山地质灾害成灾机理与防控重点实验室;陕西省地质环境监测总站;
【基金】：国家重点基础发展研究计划(973计划)资助项目(2013CB227901) 陕西省科学技术推广计划资助项目(2011TG-01) 陕西省公益性地质调查项目资助项目(2013020101)
【分类号】：P641.8;TD82

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