海石湾地区瓦斯赋存规律分析与防治利用  

Analysis of gas occurrence law and prevention and utilization in Haishiwan area

作　　者：李懿 Li Yi(Team 149,Gansu Coalfield Geological Bureau,Lanzhou 730020,China)

机构地区：[1]甘肃煤田地质局一四九队,甘肃兰州730020

出　　处：《能源与环保》2020年第4期61-65,共5页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：甘肃省2012年度第一批省级地勘基金项目(甘国资勘发〔2012〕26号);甘肃省2015年度第二批省级地勘基金项目(甘地基发〔2015〕11号)。

摘　　要：为了揭示瓦斯赋存的地质规律,探讨煤层气开发利用前景,寻找瓦斯防治与利用途径,基于地质资料、瓦斯测试结果与近年煤层气测试成果,对海石湾地区主要可采煤层煤二层的瓦斯分布特征与煤层含气性、地层物性特征等进行了研究。结果表明:海石湾地区瓦斯赋存越靠近东、北部越大,靠近F19断层CO2含量增大,CH4与C2-C4含量则是在海石湾煤矿与韩家户沟-马家台勘查区交界处达到峰值,区内存在煤层气赋存的有利区块。该区地层抽排条件好,宜采取已建矿井地面瓦斯排采与勘查区先抽气、后采煤的方法进行开发,综合考虑瓦斯变害为利、变废为宝的利用途径。研究为该区与周边区域采取针对有效的瓦斯防治与利用措施提供了依据。In order to reveal geological laws of gas occurrence,to explore prospect of coalbed methane development and utilization,to find the way of gas prevention and utilization,based on geological data,gas test results and recent coalbed methane test results,the gas distribution characteristics,gas content and physical properties of No.2 coal seam,the main recoverable coal seam in Haishiwan area were studied.The results showed that the gas storage in Haishiwan area was increased to the east and north,and the CO2 content increased near the F19 fault.The CH4 and C2-C4 content reached a peak at the junction of Haishiwan Coal Mine and Hanjiahugou-Majiatai exploration area,and there were favorable blocks of coalbed methane in the area.Good stratigraphic conditions in this area,comprehensively considered the utilization ways of gas transformation into profit and waste into treasure.It is advisable to adopt the method of ground exhaust in built mines and first pumping and later coal mining in exploration areas.The results provided the basis for effective and targeted ways of gas prevention and utilization.

关 键 词：瓦斯抽采 煤层气 海石湾 韩家户沟—马家台 窑街矿区 

分 类 号：TD712.2[矿业工程—矿井通风与安全]