江淮水利科技Issue(6)：36-43,8.DOI:10.20011/j.cnki.JHWR.202306008
淮北采煤塌陷蓄水区地下水流场分布特征分析
Analysis on distribution characteristics of underground flow field in the subsidence reserboir of Huaibei coal mining
孟凡星 1梁建 2张禹泽3
作者信息
- 1. 安徽省大禹水利工程科技有限公司,安徽 合肥 230088
- 2. 安徽省·水利部淮河水利委员会水利科学研究院,安徽 合肥 230088
- 3. 中国铁路上海局集团有限公司合肥房建公寓段,安徽 合肥 230009
- 折叠
摘要
Abstract
In order to research on the distribution law of groundwater in Huaibei coal mining collapse storage area,based on the collecting sufficiently of relevant literatures and date in the research area,Visual Modflow software was used to simulate and analyze the variation characteristics of groundwater flow field in coal mining collapse storage area from the perspective of studying the vari-ation of aquifer structure.The results showed that:1)when the coal seam is completely mined,the mine will no longer drain,and the porewater level of the loose layer that is drained due to the drainage of the coal mining pit will gradually rise under the condition of rainfall recharge and river recharge,but it can not recover to the pre-mining level.2)The drop of groundwater level caused by mine drainage cannot be restored to the initial pre-mining flow field under natural conditions,but a subsidence lake is formed in the collapsed area,and the fissure karst water receives continuous in-filtration and recharge of lake surface water in the subsidence area and porewater in the loose layer through the vertical network water-conducting fracture zone.The rise and overflow of fissure karst water level in each collapsed storage area resulted in the formation of several local water mounds.The study on the distribution of groundwater flow field in coal mining collapse storage area after pit closure can provide scientific basis for the comprehensive utilization of groundwater resources in coal mining collapse storage area.关键词
采煤塌陷蓄水区/地下水分布/含水层结构变异/数值模拟Key words
coal mining collapse storage area/groundwater distribution/aquifer structure variation/numerical simulation分类
天文与地球科学引用本文复制引用
孟凡星,梁建,张禹泽..淮北采煤塌陷蓄水区地下水流场分布特征分析[J].江淮水利科技,2023,(6):36-43,8.
