Water resources monitoring of green coal mining in Shennan Mining Area

The geological environment of Maowusu Sandy Land in Northern Shaanxi is fragile and the water resources are poor. Green coal development has become an inevitable choice for sustainable and healtlry development of coal base in the Northern Shaanxi. The impact of large-scale and high-intensity coal mining on water resources in the Northern Shaanxi Coal Base has been one of the important assessment indicators of green coal mining. In order to study the green mining monitoring with water resources monitoring as the core in the Northern Shaanxi Coal Base and improve the content of water resources monitoring network in this area, three large-scale modem mines in the Shennan Mining Area, namely Ningtiaota Mine, Hongliulin Mine and Zhangjiamao Mine were taken, as examples to carry out the research on water resources monitoring network. The results show that the Salawusu formation and weathered bedrock formation in Shennan Mining Are-a are medium-strong water rich aquifer, and the Burnt rock formation is strong water rich aquifer. These three rock formations are the main aquifers in the area. A total of 60 monitoring boreholes are arranged for different aquifer levels in Shennan Mining Area, including 8 in Salawusu formation, 6 in Burnt rock formation, 37 in Weathered bedrock Formation, 1 in Zhiluo Formation and 8 in Yan' an bedrock formation. The groundwater monitoring data is transmitted to the data center through the wireless transmission system of the automatic monitoring system, and the remote collection and remote real-time monitoring of the data are realized through the monitoring management software of the center. For surface water monitoring, one surface water monitoring point is set up in the upper and lower reaches of Kaokaowusu river, Kentieling river, Xiaohoujiamu river, Tagou, Kentieling river, Wulanbula river and Changjiagou reservoir. Taking the water resources monitoring network composed of 60 groundwater monitoring wells, 8 surface rivers and springs monitoring points in Shen-nan Mining Area as an example, the dynamic monitoring of water resources in the mining area is implemented, so as to provide reference for the monitoring of water resources in green coal mining of the Coal Base Northern Shaanxi. © 2021 Meitan Kexun Jishu/Coal Science and Technology (Peking). All rights reserved.