摘要
淮南煤田位于华北板块南缘,作为典型的华北型煤田,淮南矿区各矿深部1煤层属"高水压薄阻水层"的灰岩岩溶承压水上开采,遭受高压灰岩岩溶承压水威胁的同时,又因其特殊的地理构造位置,各种垂向隐伏构造加剧了这种威胁,造成事故的发生。根据《煤矿防治水细则》的相关要求,结合淮南煤田的地质、水文地质条件及其特殊性,本文通过工程实际,重点从设计、多分支水平井钻探施工、判层、探查、治理、验证、评价等工艺及关键工序环节进行分析研究,旨在制定研究区1煤开采底板灰岩水害地面超前区域探查治理方案,并提出合理的建议。
The Huainan coalfield is located at the southern edge of the North China,and as a typical North China coalfield,the deep coal seam in Huainan is mined over the limestone karst bearing water of"high water pressure thin water blocking layer",which is threatened by high-pressure limestone karst bearing water,and at the same time,due to its special geographic structural location,various kinds of perpendicular hidden structures exacerbate this threat.This paper focuses on the design and construction of multi-branch horizontal wells through the engineering practice.According to the relevant requirements of the Rules of Coal Mine Water Control,and taking into account the geological and hydrological geological conditions and their peculiarities in the Huainan Coalfield,key process links such as design,multi-branch horizontal well drilling construction,seismic evaluation,exploration,treatment,verification and evaluation,with the aim of formulating a plan for the exploration and advanced treatment of limestone water damage in the area,with reasonable suggestions are made.
作者
许超
Xu Chao(The First Hydrogeological Team,General Administration of Coal Geology of China,Handan 056004,China)
出处
《煤炭与化工》
CAS
2020年第7期33-37,共5页
Coal and Chemical Industry
关键词
淮南煤田
华北型煤田
隐伏构造
多分支水平井
区域探查治理
Huainan coalfield
North China coalfield
hidden structure
multi-branch horizontal wells
regional exploration and management
