| 群矿开采条件下山西潞安矿区的地下水流场变化 |
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| 关键词:computer simulation physical simulation similar material model multiple coal mining aquifer structure damage |
| 基金项目:国家自然科学基金重点项目(编号: 41130637);河北省高等学校科学技术研究项目(编号: ZD2014023; QN2015061);河北省科技计划项目(编号: 15273630);中国地质科学院水文地质环境地质研究所重点实验室开放基金(编号: KF201605) |
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| 摘要: |
| Changes of the Groundwater Flow Field of Lu’an Mining Area, Shanxi Province, under the Condition of Group Mining |
| Multiple coal mining leads to regional aquifer structure damage, which has seriously affected the regional groundwater circulation and evolution trend and seems to be the root cause of groundwater resource shortage in the coal mining area. With the Lu’an mining area in Changzhi basin as an example and through field investigation, similar material simulation and numerical simulation method, the authors analyzed the damage of aquifer structure and its influence on groundwater circulation. Sand tank simulation test results were compared with the results of numerical simulation, and the results show that the fissure development formed by coal mining is basically restricted to complete bedrock, which causes bending deformation of the water bottom clay rock and forms interlayer drainage area, but this has little damage to Quaternary unconfined aquifer structure; Effective thickness of thinner parts of water-resisting layer leads to the disappearance of unconfined aquifer due to mining fissures cutting waterproof layers; Artificial “headward erosion” caused by coal mining causes the abstraction phenomenon of groundwater between the original isolation groundwater systems, and mine water recharge appropriately increases. |
| DAI Feng-gang,ZHANG Fa-wang,WANG Bin,HAN Zhan-tao,YAO Hong-chao,HU Bo-wen.2018.Changes of the Groundwater Flow Field of Lu’an Mining Area, Shanxi Province, under the Condition of Group Mining[J].Acta Geoscientica Sinica,39(1):94-102. |
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