CAJ | 학술논문

突出了大区域构造背景下的瓦斯赋存分布特征及其控制因素研究。重庆煤矿区古今构造应力场具有继承性，煤系应力长期得不到松弛，形成含煤岩系的长期应力集中，十分利于瓦斯富集，致使煤与瓦斯突出主要发生在地质构造变动比较剧烈的应力集中区。含煤岩系沉积环境及构造应力场是控制重庆煤矿区瓦斯赋存的两大地质因素。龙潭组海湾—潮坪—沼泽/泥炭相沉积环境具有良好的封盖能力，瓦斯含量普遍较高；须家河组河流冲积平原、湖滨—三角洲沉积体系对瓦斯的封盖能力较弱，瓦斯含量普遍较低。厘定出南桐高突瓦斯带、华蓥山高突瓦斯带、永荣高瓦斯带、渝东南瓦斯带、渝东瓦斯带和大巴山高瓦斯带6个区域性瓦斯地质带。
돌출료대구역구조배경하적와사부존분포특정급기공제인소연구。중경매광구고금구조응력장구유계승성，매계응력장기득불도송이，형성함매암계적장기응력집중，십분리우와사부집，치사매여와사돌출주요발생재지질구조변동비교극렬적응력집중구。함매암계침적배경급구조응력장시공제중경매광구와사부존적량대지질인소。룡담조해만—조평—소택/니탄상침적배경구유량호적봉개능력，와사함량보편교고；수가하조하류충적평원、호빈—삼각주침적체계대와사적봉개능력교약，와사함량보편교저。전정출남동고돌와사대、화형산고돌와사대、영영고와사대、투동남와사대、투동와사대화대파산고와사대6개구역성와사지질대。
In this study, the control factors and distribution characteristics of coal seam gas occurrence are empha-sized in large regional tectonic background. Due to the inheritability between ancient and modern tectonic stress fields in Chongqing coal mining area, the coal-bearing formation bears long term effect of stress concentration and cannot be relaxed. Therefore, this makes the coal and gas outburst occur primarily in the stress concentration area of more intense tectonic movements. The tectonic stress field and the sedimentary environment of coal-bearing formations are two major geological factors in controlling gas occurrence. Longtan Formation is mainly of bay-tidal-peat swamp facies, which indicates that it has great sealing ability to reserve gas, and the gas content is generally high. However, the coal seam gas content of Xujiahe Formation is generally low, because in Xujiahe Formation the ability of reserving gas is poor, sedimentary systems of river alluvial plain and lakeshore-delta had been developed. Finally, six regional gas geological zones are defined, including Nantong high outburst gas zone, Huayingshan high outburst gas zone, Yongrong high gas zone, southeast Chongqing gas zone, east Chongqing gas zone, and Dabashan high gas zone.