Groundwater of Luohe Formation is the main water source for industrial and agricultural and residential use in Binchang mining area, which is one of the key elements to water conservation coal mining. However, few studies are available to document the enrichment characteristics and influence of underground coal mining on groundwater for the Luohe Formation. This study evaluates the changes of groundwater levels and spring flow caused by mining activities to explore the influence mechanism of coal mining on groundwater by comparatively analysing existing mining data and survey data combined with a series of mapping methods. The results show that the aquifer of Luohe Formation are gradually thinning south-eastwards, disappeared at the mining boundary. In the vertical direction, the lithological structure is distinct, due to alternative sedimentation of meandering river facies and braided river facies. According to the yielding property, the aquifer is divided into three sections, namely, strong water-rich section, medium water-rich section, and weak water-rich section, which are located in northwest and central part, southwest, and the rest part of the mining area, respectively. Mining of Tingnan Coal Mine since 2004 has caused a 3.16 to 194.87 meters drop in groundwater level of Luohe Formation. Until 2015, 70.10% of the mining area undergoes a groundwater level drop larger than 10.00 meters. Another influence of underground mining is that the total flow from 34 springs in 8 southern coal mines of the area has decreased by 286.48 L/s with a rate of decrease at 46.95% from 2007 to 2017. The areas that groundwater level falls or spring flow declines are manly located in the mine gob areas. Results also indicate that the ratio of the height of water conducted fracture zone to the mining height in Binchang mining area is between 16.85 and 27.92. This may increase ground water flow in vertical direction, causing a water level in the aquifer system to drop and ultimately decreasing the flow from the springs. The research results will provide data and theoretical support for the protection of groundwater resources and water conservation coal mining of Luohe Formation in Binchang mining area.

Bin河组地下水是宾昌矿区工农业和民用住宅的主要水源，是节水煤矿开采的关键要素之一。然而，很少有研究来记录document河组地下煤炭开采的富集特征和对地下水的影响。本研究通过比较现有的采矿数据和调查数据，并结合一系列测绘方法，评估了采矿活动引起的地下水位和春季水流量的变化，以探索煤矿开采对地下水的影响机理。结果表明，he河组含水层向东南方向逐渐变薄，在开采边界消失。在垂直方向上，岩性结构是不同的，由于蜿蜒的河相和辫状河相的交替沉积。根据屈服性，将含水层分为西北，中部，西南，其余三部分，即强水富集区，中水富集区和弱水富集区。分别为矿区。自2004年以来，汀南煤矿的开采已导致Lu河组地下水位下降3.16至194.87米。到2015年，矿区70.10％的地下水位下降幅度超过10.00米。地下采矿的另一个影响是，从2007年到2017年，该地区南部8个煤矿的34个弹簧的总流量下降了286.48 L / s，下降速度为46.95％。地下水位下降或泉水流量下降的区域主要位于矿山采空区。研究结果还表明，宾昌矿区导水裂隙带高度与开采高度之比在16.85〜27.92之间。这可能会增加垂直方向上的地下水流量，导致含水层系统中的水位下降，并最终减少来自弹簧的流量。研究结果将为宾昌矿区Lu河组地下水资源的保护和节水煤矿的开采提供数据和理论依据。导致含水层系统中的水位下降，并最终减少了来自弹簧的流量。研究结果将为宾昌矿区Lu河组地下水资源的保护和节水煤矿的开采提供数据和理论依据。导致含水层系统中的水位下降，并最终减少了来自弹簧的流量。研究结果将为宾昌矿区Lu河组地下水资源的保护和节水煤矿的开采提供数据和理论依据。