晋城矿区瓦斯含量井上下测试结果对比分析

Comparison analysis on underground mine and mine surface gas content measuring and testing results in Jincheng Mining Area

为准确掌握矿井煤层瓦斯含量分布,有效治理瓦斯灾害及开发利用瓦斯资源,对比分析了寺河煤矿、赵庄煤矿井田及邻近区域实施的92口煤层气井瓦斯含量,地勘时期测定的86组瓦斯含量和生产期间井下实测的原始瓦斯含量。结果表明：寺河煤矿煤层埋深在300~450 m时,煤层气含量约为井下实测瓦斯含量的1.28~1.37倍,地勘瓦斯含量约为井下瓦斯含量的1.01~1.10倍。赵庄煤矿煤层埋深在600~750 m时,煤层气含量约为井下实测瓦斯含量的1.05~1.41倍;煤层埋深在450~700 m时,地勘瓦斯含量约为井下实测瓦斯含量的1.01~1.35倍。基于此,得到多源瓦斯含量数据产生差异的主要原因为参数测试条件不同,采样方式不同、残存瓦斯含量测定方法及内容不同等。

In order to accurately understand the gas content distribution of the seams in the mine,to effectively control gas disaster and to develop and utilize the gas resources,the paper analyzed the gas contents of 92 coalbed methane wells drilled in Sihe Mine,Zhaozhuang Minefield and the neighboring regions. During the geological exploration period,there were 86 gas contents measured there were in-situ gas contents measured in the underground mine during the mine production period. The results showed that when the seam depth in Sihe Mine was about 300 ~ 450 m,the coalbed methane content was about 1.28 ~ 1.37 times higher than the site measured gas content in the underground mine and the gas content during the geological exploration period was about 1. 01 ~ 1. 10 times higher than the gas content measured in the underground mine.When the seam depth in Zhaozhuang Mine was about 600 ~ 750 m,the coalbed methane content was about 1.05 ~ 1.41 times higher than the site gas content measured in the underground mine.When the seam depth was about 450 ~ 700 m,the geological gas content was about 1.01 ~ 1.35 times higher than the site measured gas content in the underground mine.Based on the circumstances,the main causes to make differences of the multi-source gas content data would be the different parameter measuring and testing condition,different sampling method,residual gas content measuring method and different contents.