高强度煤炭开采对烧变岩泉的影响  

Influence of high-intensity coal mining on burned rock spring

作　　者：范立民 贺卫中 彭捷 向茂西 仵拨云 

机构地区：[1]矿山地质灾害成灾机理与防控重点实验室,陕西西安710054 [2]陕西省地质环境监测总站,陕西西安710054

出　　处：《煤炭科学技术》2017年第7期127-131,共5页Coal Science and Technology

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)

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。In order to explore the influence of high-intensity coal mining on the burned rock spring,the effective protection of groundwater resources was carried out,and the change of burned rock and spring before and after coal mining was analyzed by field investigation. The results showed that there were 405 burned rock springs in Yulin and Shenmu and Fugu area before the coal mining in 1994,the total flow was766.182 L/s.20 years,such as high-intensity coal mining and other factors,the existing burning rock springs was 62 in 2015,the total flow was 145.176 3 L/s.20 years the number of burned rock spring attenuation of 93.58%,flow attenuation of 81.06%.Based on the hydrogeological characteristics of fractured aquifers,the mechanism of coal mining on the turbid rock was divided into three types,which were caused by coal mining around burnt rock,caused by mining under burnt rock and groundwater watershed attack caused by coal mining.

关 键 词：保水采煤 烧变岩泉 高强度采煤 榆神府区 

分 类 号：TD741[矿业工程—矿井通风与安全]