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一、福建龙岩煤系煤田地质特点 1.煤系地层特点福建省主要含煤地层为下二迭统龙岩组,其次有上三迭统大坑～文宾山组(闽北叫焦坑组)。龙岩煤系出露面积约1600平方公里,主要分布在闽中和闽西地区。大体可分三个条带,均呈北东～北北东向排列。两条带南起武平,经过连城、清流直到将乐;中条带自永定、龙岩、章平而至大田;东条带包括华安、安溪至永春天湖山一带。煤系总厚300(西部)至990米(东部),自西向东煤系增厚,可采煤层也逐渐增多。由南往北,富煤层位逐渐向上部移动。总的来看,煤系沉积东西向连续性差,差异性大。南北向(近似北东向)连续性较好,差异性小。原始沉积显然受北东向构造控制。
First, coal geological characteristics of the Longyan coal seam in Fujian 1. Characteristics of coal strata characteristics The main coal-bearing strata in Fujian Province are the Lower Second Permian Longyan Formation, followed by the Upper Triassic Tai Hang ~ Wenbingshan Formation (northern Fujian called Jiao Hang Formation) . Longyan coal outcropping area of about 1600 square kilometers, mainly in central Fujian and western Fujian. Generally can be divided into three strips, were north to east ~ north-east arrangement. The two belts from the south of Wuping, even after the city, clean until the music; strip in Yongding, Longyan, Zhang Ping and field; East strip, including Huaan, Anxi to Yongchun Tianhushan area. The total coal thickness of 300 (west) to 990 m (east), thickened from west to east coal, recoverable seams are also gradually increased. From south to north, the coal seam gradually moves upwards. In general, coal-bearing sediments have poor east-west continuity and great variability. North-South (approximately North-East) continuity is better, the difference is small. The original sediments are obviously controlled by the NE structure.