基于高瓦斯矿井的瓦斯地面抽采技术方案研究与应用  

Research and application of ground gas extraction technology based on high gassy mines

作　　者：韩瑞达 HAN Ruida(Shanxi Lu’an Jinyuan Coalbed Methane Development Corporation Limited,Changzhi 046200,Shanxi,China)

机构地区：[1]山西潞安金源煤层气开发有限责任公司,山西长治046200

出　　处：《地质装备》2024年第4期43-47,共5页Equipment for Geotechnical Engineering

摘　　要：煤层气(瓦斯)是吸附在煤层中的伴生矿产资源,合理开发煤层气对于清洁能源开发和煤矿安全生产具有重大意义。然而,高浓度瓦斯使得矿井爆炸风险提高,同时增大了煤矿采掘难度。为此,本文以某高瓦斯矿井3号煤层为研究对象,着眼于瓦斯地面抽采整体流程,总结出一套钻井-压裂-排采的抽采技术方案。首先,通过含气测定和相关试验分析其含气量、渗透率、孔隙率、储层压力等煤层条件;其次,针对该地区煤层特点,通过优化钻井、压裂和排采的技术方法,提出高瓦斯矿井瓦斯地面抽采技术方案,并进行现场试验。现场试验表明,该优化方案不仅确保了煤矿的安全生产,同时在经济和环保方面也取得了显著成果。Coalbed methane also known as coal mine gas is a associated mineral resource adsorbed in coal seams.The rational development of coalbed methane is of significant importance for the development of clean energy and the safety of coal mining.However,high concentrations of coal mine gas increase the risk of mine explosions and complicate the process of coal mining.In this paper,focusing on the No.3 coal seam in a high coalbed methane concentration mine,the authors summarize a drilling-fracturing-production scheme for extraction technology.Firstly,the coal seam conditions,including gas content,permeability,porosity,and reservoir pressure,are analyzed through gas content measurements and relevant experiments.Secondly,based on the characteristics of the coal seams in the region,a technical plan for ground gas extraction in high gassy mines is proposed by optimizing drilling,fracturing,and drainage methods,and on-site testing is conducted.The on-site experiments demonstrate that this optimization scheme not only ensures the safety of coal mining,but also achieves significant economic and environmental benefits.

关 键 词：高瓦斯矿井 定向井水力压裂 支撑剂优化 瓦斯排采 

分 类 号：TD712.6[矿业工程—矿井通风与安全]