摘要
神东矿区西部井田含煤地层延安组普遍为下白垩统志丹群所覆盖,人们还未充分认识志丹群在矿区中的水文地质意义和矿井充水特征.文章以神东矿区寸草塔矿为例,研究了志丹群地下水富存规律、补径排特点、突水特征和保水开采条件.研究表明寸草塔矿志丹群平均厚度58.4m,弱~中等富水,大气降水补给为主,径流与排泄受地形地貌控制,井田存在潜在志丹群突水危险;加强志丹群地下水赋存规律探查,充分利用下伏于志丹群的、平均厚度70.7 m的中侏罗统直罗组隔水屏障,是寸草塔矿实现志丹群保水开采的重要前提.
The early Cretaceous aquifer of the Zhidan group is widely distributed in the western part of the Shendong mining area.The characteristics of this aquifer are not yet fully understood.The Cuncaota mine in the Shendong mining area is used as an example for the investigation of the hydro-geologic and water yield properties of the Zhidan group.The potential flooding threat from the Cretaceous aquifer into underground mining structures is predicted.The results show that the Zhidan group,with an average thickness of 58.4 m,is a weak to medium water bearing formation.It is hydro-geologically controlled by the topography,geomorphy,and erosion base of the region.The Cretaceous aquifer poses a potential water inrush threat to underground mining.The underlying middle Jurassic Zhiluo formations act as natural aquifuges that help reserve the Cretaceous water resource.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2011年第3期362-367,共6页
Journal of China University of Mining & Technology
基金
国家重点基础研究发展计划(973)项目(2007CB209400)
煤炭资源与环境科学技术创新引智基地项目(B07028)
国家自然基金项目(50974115)
江苏省博士后科研计划项目(0801029B)
关键词
寸草塔矿
侏罗系煤田
志丹群
直罗组
充水特征
Cuncaota mine
Jurassic coalfield
Zhidan group
Zhiluo formation
flooding condition
