Environmental Branch of China Coal Dihuasheng Hydrogeological Survey Co., Ltd.

随着浅层煤炭资源枯竭和产业调整,峰峰矿区境内大部分小型矿井均已关闭,废弃矿井有引发地下水污染的风险。为掌握废弃矿井闭坑后的地下水污染过程与风险,识别废弃矿井主要环境风险、导水通道疏堵的风险等级,进而筛选出地下水污染等级较高的废弃矿井,优先开展回填工程。以峰峰矿区境内34口废弃矿井为研究对象开展风险评估,通过风险识别、风险评估指标体系构建、风险计算与等级划分等综合评估方法,共划分出高风险等级10口,中风险等级8口,低风险等级16口,可为峰峰地区及情况相似地区废弃矿井的风险评估提供借鉴,进而为后期封井回填治理工作奠定基础。

With the depletion of shallow layer coal resources and industrial adjustments, most small size mines in the Fengfeng mining area are closed, and abandoned mines pose a risk of causing groundwater pollution. In order to grasp the process and risks of groundwater pollution after pit closure in abandoned mines, identify the main environmental risks of abandoned mines, the risk levels of water-conducting passageway clearage and blockage, and further screen out abandoned mines with higher groundwater pollution levels, give priority to implement backfilling works. A risk assessment is conducted by taking 34 abandoned mines within the territory within the Fengfeng mining area as the research object. Through comprehensive evaluation methods such as risk identification, risk assessment index system construction, risk calculation, level classification and so on, a total of 10 high risk level mines, 8 medium risk level mines, and 16 low risk level mines are classified, which can provide reference for the risk assessment of abandoned mines in the Fengfeng area and areas with similar situation, and lay the foundation for later well sealing and backfilling governance work.