南桐煤矿主采煤层煤质特征及含气性评价

Study on Coal Quality Characteristics and Gas Bearing of Main Coal in Nantong Coal Mine

南桐煤矿是重庆市煤炭产量较高的矿区之一,其主采二叠系上统龙潭组6#、5#及4#煤层。对主采煤层的煤质特征及含气性进行研究,得出结论:研究6#、5#、4#煤层均为中灰、低挥发分、中高硫-高硫、高热值、中等~中高固定碳、黏结性、结焦性较好的焦煤;研究煤层成因类型均属腐植煤,由高等植物在沼泽环境中形成;研究煤层中煤层气资源含量丰富,建议可采取先地面抽采利用煤层气,再井下开采煤炭资源。

Nantong coal mine is one of the mining area of Chongqing city coal yield is higher, the main mining permian Longtan Formation of 6#, 5#and 4#seam. Coal quality characteristics of main coal and gas were studied, draw the conclusion: the study of 6#, 5#and 4#seam are in ash, low volatile, middle to high sulfur and high calorific value, medium to high fixed carbon, adhesion, good coking coking coal;coalbed genesis types of research are humic coal, composed of higher plant formation in the swamp environment; the study of coal seam gas resources rich layer, recommend the first ground extraction and utilization of coal-bed gas, and the underground mining of coal resources.