城郊井田二2煤层瓦斯地质赋存特征研究

Study on Gas Geological Occurrence Characteristics of No.2 Coal Seam in Chengjiao Mine Field

瓦斯地质规律研究是有效指导矿井瓦斯预测和瓦斯防治的基础。本文运用瓦斯地质理论和方法,从煤层埋藏深度、顶底板岩性、地质构造、岩浆岩分布、陷落柱、水文地质条件等方面探讨了城郊井田瓦斯地质赋存特征。综合分析认为煤层埋深、地质构造及煤层顶板岩性是影响该井田二2煤层瓦斯赋存的主控因素。

The study of gas geological law is the basis of effectively guiding the gas prediction and gas prevention and control in the mine.This paper uses the gas geological theory and method to discuss the gas geological occurrence characteristics of Chengjiao mine field from the aspects of the coal seam burial depth,roof and floor lithology,geological structure,magmatic rock distribution,collapse column,hydrogeological conditions,etc.The comprehensive analysis shows that the coal seam burial depth,geological structure and coal seam roof lithology is the main control factor of gas occurrence in the No.2 coal seam.