摘要
为了解决我国东部矿区地面水文监测孔深度大、数量少、监测点密度相对不足的问题,研制了一种安装在孔内的分隔止水装置,提出了相应的成孔、洗井技术要求和安装操作流程,形成了一套适用于煤矿长期地下水监测的双层监测技术与装备,有效提高了地面监测孔利用效率,增大监测点密度。分隔止水装置加工简单,成孔要求低,安装操作简便,既能在新建地质勘探孔和水文地质勘探孔中安装,也能将煤矿原有混层监测孔改造为双层监测孔。现场工程监测结果表明:双层监测孔上下两个含水层监测水位相差较大,水位变化趋势完全不同,无上下串层现象,成功实现了一孔双层监测,具有较高的实用价值。
In order to solve the problems of large depth,inadequate surface hydrological monitoring holes and relatively insufficient density of monitoring points in the eastern mining area in China,a separate water-stop device installed in the hole was developed.Corresponding hole-forming and well-flushing technical requirements and installation process were proposed.A set of double-layer monitoring technology and equipment is formed for long-term groundwater monitoring of coal mines.The research results enhanced the utilization efficiency of ground monitoring holes and increased the density of monitoring points.The separate water-stop equipment is simple to produce,suitable to various hole formations,and is easy to install and operate.It can be installed in both new geological exploration holes and hydrogeological exploration holes,and in the original mixedlayer monitoring holes,can be transformed into double-layer monitoring holes.The technology and equipment have been verified in the ground monitoring hole of a mine in Shandong Province.The on-site monitoring results show that there is a significant difference in the monitored water levels of the upper and lower aquifers of the double-layer monitoring hole,the water level trend is completely different,and there is no cross layer phenomenon between the upper and lower layers.The double monitoring of one well is realized.
作者
王红梅
董书宁
WANG Hong-mei;DONG Shu-ning(China Coal Research Institute,Beijing 100013,China;Xi’an Research Institute of China Coal Technology and Engineering Group Corp.,Xi’an 710054,China;Shaanxi Key Laboratory of Preventing and Controlling Coal Mine Water Hazard,Xi’an 710054,China)
出处
《煤炭工程》
北大核心
2022年第7期116-121,共6页
Coal Engineering
基金
中煤科工集团西安研究院有限公司2020年度科技创新基金项目(2020XAYPT05)。
关键词
地下水监测
双层监测
分隔装置
监测技术
groundwater monitoring
double layer monitoring
separation device
monitoring technology
