川南屏山地区宣威组煤层对比及聚煤分析
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摘要
四川屏山地区的含煤地层为二叠系上统宣威组,该煤系地层含煤层及煤线共有10余层,其中多数地段可采煤层3层,局部可采煤层2层。晚二叠世的南屏山地区,气候温湿,植物茂盛,为成煤提供了大量物源,加之地处这种海陆过渡的滨海-泻湖沉积环境,所以形成的煤层稳定性比较好,加之地壳小幅振荡频繁,因而沉积了多层的可采煤层。
The coal-bearing bed in Pingshan area,Sichuan is Upper Permian Xuanwei Formation.There are more than 10 beds of coal-bearing bed and coal seam in this coal series,however,in which the minable coal bed is 3 in most area,locally 2.Pingshan area in Permian,the weather is mild and wet,vegetation flourishing,which provide a lot of sources for the coal formation.Moreover,the shore-lagoon sedimentary environment in transition of ocean and land results in the good stability of coal bed.And many minable coal beds are deposited because of the frequent vibration in small scale of crust.
The coal-bearing bed in Pingshan area,Sichuan is Upper Permian Xuanwei Formation.There are more than 10 beds of coal-bearing bed and coal seam in this coal series,however,in which the minable coal bed is 3 in most area,locally 2.Pingshan area in Permian,the weather is mild and wet,vegetation flourishing,which provide a lot of sources for the coal formation.Moreover,the shore-lagoon sedimentary environment in transition of ocean and land results in the good stability of coal bed.And many minable coal beds are deposited because of the frequent vibration in small scale of crust.
引文
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