浅埋煤层开采的矿井水来源判别  

Source Discrimination of Mine Water from Shallow Buried Coal Seams Mining

作　　者：申涛 马雄德[2] 戴国锋[3] 

机构地区：[1]陕西省地质调查院,陕西西安710065 [2]长安大学环境科学与工程学院,陕西西安710054 [3]建设综合勘察研究设计院有限公司,北京100007

出　　处：《中国煤炭地质》2011年第10期35-38,共4页Coal Geology of China

基　　金：陕西省科学技术计划(2011TJ-01)

摘　　要：以陕北侏罗纪煤田凉水井煤矿为例,研究了浅埋煤层开采涌水量规律,根据煤矿井下水样的氢氧同位素构成,计算了矿井水的来源。该区矿井水接受风化基岩裂隙承压水和萨拉乌苏组潜水的补给,矿井水δD为-70‰,裂隙水δD为-80‰,萨拉乌苏组潜水δD为-67.46‰,由此可以计算出矿井水的补给来源主要是萨拉乌苏组地下水,萨拉乌苏组潜水补给占79.74%,基岩裂隙水补给占20.26%,据此提出该区保水采煤重点是保护萨拉乌苏组地下水含水结构的稳定性。Taking the Liangshuijing coalmine in the northern Shaanxi Jurassic coalfield as an example,studied the regular pattern of water inflow during shallow buried coal seams mining.Based on hydrogen and oxygen isotopic composition of water samples from coalmine underground,discriminated mine water source.The mine water in the area accepts recharges from weathered bedrock fissure confined water and Xar Us Formation phreatic water.The δD of mine water is-70‰,fissure water-80‰ and phreatic water-67.46‰,thus the main recharging source of mine water is from the Xar Us Formation groundwater can be calculated,the percent sharing of phreatic water is 79.74%,bedrock fissure water 20.26%.In view of the above,the emphasis on water conservation coal mining is to protect stability of Xar Us Formation water-bearing structure.

关 键 词：矿井涌水量 充水水源 同位素 水化学 萨拉乌苏组 

分 类 号：P641.3[天文地球—地质矿产勘探]