中文摘要：

以新安煤田构造应力场及构造演化历史分析为基础,结合大量瓦斯地质资料和瓦斯实测参数,研究了新安煤田瓦斯地质规律及主控因素。研究表明：煤的变质程度、地质构造、煤厚变化及埋深是控制新安煤田瓦斯分布规律的主要因素,新安煤田自成煤时期以来经历了多期构造运动,煤体变质程度的增高造成该地区煤层瓦斯含量整体增高;地质构造引起的构造应力、煤厚及埋深等方面的变化,导致新安煤田煤层瓦斯分布不均匀;煤厚的剧烈变化是造成新安煤田局部地区瓦斯含量急剧增高的主要原因。

英文摘要：

Based on the analysis of tectonic stress field and tectonic evolutionary history, and combined with gas geological data and gas measured parameters, the gas geology characteristics and main controlling factors in Xin＇an coal field was researched. The results showed that the met- amorphic grade, geological structure, seam thickness change and field burial depth were the pri- mary factors for controlling the gas distribution in Xin＇an coal field, since the coal forming peri- od, there were multiple tectonic movement in Xin＇an coal field, and the high degree of coal meta- morphism caused the increase of coal seam gas-bearing capacity; the change of tectonic stress, seam thickness and burial depth caused by geological structure resulted in the nonuniform distri- bution of coal seam gas; and the rapid change of seam thickness was the main reason of the rapid increase of gas capacity in partial areas.