The main rocks are sandstone, mudstone and muddy siltstone or silty mudstone.
岩石类型主要有砂岩、泥岩及泥—粉砂过渡岩类。
The occurrence is steady and the structure is simple with FM, JM types of coal, whose roof is limestone and siltstone and bottom is muddy siltstone and sandy mudstone;
赋存稳定,结构简单,煤种为FM、JM,煤层顶板为石灰岩、粉砂岩,底板为泥质粉砂岩、砂质泥岩;
应用推荐