地质勘查阶段查明瓦斯突出三要素的途径与方法  

Ways and Means to Ascertain Three Factors of Gas Outburst during Geological Exploration Stage

作　　者：张慧[1] 

机构地区：[1]煤炭科学研究总院西安研究院,陕西西安710054

出　　处：《中国煤炭地质》2009年第10期16-19,共4页Coal Geology of China

基　　金：国家十一五科技支撑计划项目课题(2006BAK03B01);国家重点基础研究发展规划"973"项目(2003CB214602)

摘　　要：矿井瓦斯突出的三要素是煤体结构、瓦斯含量和瓦斯压力。煤及煤层气地面勘查阶段可以获取煤体结构描述、煤层(总)气含量、甲烷含量、煤层气自然解吸速率和衰减系数、煤层压力、地应力、煤层渗透率等参数。地面钻孔与煤矿井下测取这些参数的方法和原理虽然存在差异,但这些参数都是煤层原地物性特征的反映,故应该利用地面钻孔的实测数据和资料,广泛收录、整理对预测瓦斯突出有益的信息。建议在地质勘查阶段查明瓦斯突出三要素,将预防瓦斯灾害工作从地质勘查的源头做起。Three factors of coal and gas outburst are coal body texture, gas content and gas pressure. Parameters can be acquired during the coal and coal bed methane exploration stage include coal body texture features, total gas content, methane content, gas natural desorption rate and attenuation coefficient, coal bed pressure, geo-stress, seam permeability, etc. But above-mentioned parameters and data are reflections of coal seam physical properties in situ, thus measured data from surface drilling should be used, and information beneficial to gas outburst prediction should be widely employed and arranged. It is suggested that to ascertain three factors of gas outburst during geological exploration stage, thus to carry out the prevention of gas disaster from the genuine source.

关 键 词：勘查阶段 煤体结构 煤层气含量 煤层压力 

分 类 号：P618.11[天文地球—矿床学]