榆横矿区典型矿井含水层水力联系辨识  

Identification of hydraulic connection in typical coal mine aquifers of Yuheng mining area

作　　者：王淑璇 王强民 曹煜 王浩 Wang Shuxuan;Wang Qiangmin;Cao Yu;Wang Hao(CCTEG Xi′an Research Institute(Group)Co.,Ltd.,Xi′an 710077,China;Shaanxi Province"Four Main Bodies and One Union"Yellow River Basin Middle Section Mining Area(Coal Mine)Ecological Environment Protection and Restoration School Enterprise Joint Research Center,Xi′an 710077,China)

机构地区：[1]中煤科工西安研究院(集团)有限公司,陕西西安710077 [2]陕西省“四主体一联合”黄河流域中段矿区(煤矿)生态环境保护与修复校企联合研究中心,陕西西安710077

出　　处：《能源与环保》2025年第2期101-105,111,共6页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：陕西省自然科学基础研究计划项目(2019JQ-009);陕西省创新能力支撑计划项目(2024RS-CXTD-44);天地科技股份有限公司科技创新创业资金专项项目(2022-2-TD-ZD005)。

摘　　要：为了实现陕北侏罗纪煤田多个煤矿受顶板水害威胁的煤炭资源安全开采,以位于榆横矿区东北部的典型矿井为例,综合采用抽水试验、水化学和同位素分析等方法,初步探究了煤层顶板上覆含水层间的水力联系。结果显示,直罗组含水层抽水,第四系和洛河组水位未发生下降;直罗组下段含水层抽水,直罗组上段水位下降明显;延安组含水层抽水,直罗组水位出现小幅下降。第四系和洛河组地下水水化学类型为HCO_(3)·Ca,直罗组上段、直罗组下段和延安组地下水水化学类型为SO_(4)·Na,且3个含水层地下水Stiff图像基本一致,与第四系和洛河组地下水的Stiff图像差异较大。直罗组上段、直罗组下段和延安组水样点集中分布在大气降雨线的左下方,与第四系和洛河组水样点的距离较远,且3个含水层地下水年龄相近,明显大于第四系含水层地下水年龄。综合以上分析,榆横矿区侏罗系砂岩含水层存在一定程度的水力联系,与第四系、洛河组含水层水力联系较差。因此,煤层上覆延安组与直罗组全段是该区域煤矿水害防治需要关注的关键含水层。In order to achieve the safe mining of coal resources in the Jurassic coalfield in Northern Shaanxi,which is threatened by roof water hazards in multiple coal mines,a typical mine located in the northeastern part of the Yuheng mining area was taken as an example.Preliminary exploration of the hydraulic connection between the water-bearing strata above the coal seam roof was conducted by comprehensively using methods such as pumping tests,hydrochemical analysis,and isotope analysis.The results indicated the results showed that the water levels of the Quaternary and Luohe Formations didn′t decrease when the Zhiluo Formation aquifer was pumped,the upper Zhiluo Formation water level decreased obviously when the lower Zhiluo Formation aquifer was pumped,Zhiluo Formation water level decreased slightly when Yan′an Formation aquifer was pumped.The hydrochemistry type of Quaternary and Luohe Formation groundwater was HCO_(3)·Ca,the hydrochemistry type of the upper and lower Zhiluo Formation,Yan′an Formation was SO_(4)·Na.Moreover,the Stiff images of groundwater in the three aquifers were basically the same,with great difference from the Stiff images of Quaternary and Luohe Formation groundwater.The water samples of Zhiluo and Yan′an aquifers were concentrated in the lower left of the atmospheric rainfall line,far from the Quaternary and Luohe Formation water samples,and the groundwater ages of the three aquifers were similar,significantly older than the Quaternary aquifer groundwater.Based on the above analysis,there is a certain degree of hydraulic connection between the Jurassic sandstone aquifer in the Yuheng mining area,while the hydraulic connection between the above two aquifers and Quaternary and Luohe Formation aquifers was poor.Therefore,the Yan′an Formation and whole section of Zhiluo Formation overlying coal seam were the key aquifers to be paid attention to in the prevention and control of water damage.

关 键 词：水力联系 抽水试验 水化学 同位素 榆横矿区 

分 类 号：TD741[矿业工程—矿井通风与安全]