摘要
通过对南票三家子煤矿瓦斯地质资料的分析,并结合煤层瓦斯含量的现场测定和实验室测试,探讨了断层、构造凹地、煤层围岩、含煤岩系沉积环境以及岩浆侵入等地质因素对6-2煤层瓦斯赋存、分布的影响;分析了各因素与瓦斯含量的关系,即断层、岩浆侵入破坏了煤体的结构,构造凹地引起的压性应力导致6-2煤层区域性渗透率下降,这些因素对瓦斯的逸散均起了阻碍的作用,因此是影响瓦斯赋存的主控因素。绘制出瓦斯含量等值线图,进而为采掘布置和瓦斯防治工作提供了理论依据。
Through analyzing the methane geologic data in the 6-2 coal seam of the Nanpiao San Jia - zi mine, based on the field measurement and laboratory test for the methane content of the coal seam, the geologic factors for the 6-2 coal seam methane occurrence and distribution regularity are discussed, such as the fault, structure depression, coal seam surrounding rock, coal-content rocks sedimentary environment, mag- ma intrusion and so on. The relationship between all factors and methane content is analyzed. It is found that the fault, magma intrusion break the construction of the coal, the compressive stress caused by the structure depression leads to the regional permeability of 6-2 coal seam decreased. These factors obstructed the methane fleeing are the main factors to affect the methane occurrence. Plot methane content isoline map provides the theory for the mining layout and the methane preventing.
出处
《世界科技研究与发展》
CSCD
2011年第6期987-989,992,共4页
World Sci-Tech R&D
关键词
瓦斯
赋存规律
地质因素
瓦斯地质
methane
occurrence regularity
geologic factors
methane geology
