滇东地区控煤构造样式研究

运用构造控煤分析方法，根据后期控煤构造几何形态特征及形成机制，将滇东控煤构造划分为4大类（褶皱断裂组合、逆冲断裂组合、伸展构造组合和反转构造组合）11种控煤构造样式，其形成机制主要以挤压作用为主，辅以局部的拉张或走滑作用．在一些地区还存在因局部应力场改变而产生的变形。煤系赋存特征与控煤构造样式关系密切。以逆冲断裂组合为主的控煤构造样式，其煤系受构造破坏显著，煤系赋存范围较小；以褶皱断裂组合为主的控煤构造样式，其煤系赋存稳定，可形成大面积开发区块。

Study on Coal-control Structural Pattern in Eastern Yunnan Area

Using the structural coal-control analytical method, according to the geometry of the succeeding coal-control structural features and formation mechanism in the Eastern Yunnan, the coal-control structural patterns were classified into four main combination types： fold and fault, reverse thrust, extensional structure and inversion structure, then subdivided into eleven coalcontrol structural patterns. The formation mechanism is mainly compressions, complemented by local extensional or strike-slip actions, in some places existed deformations generated by local stress field changing. The relation between coal measures hosting features and coal-control structural pattern is very close. When the reverse thrust combination is the main coal-control structural pattern, coal measures are obviously destructed by structures and only have smaller hosting extent; while the fold and fault combination is the main pattern, coal measures hosting is stable and may form large area exploitable blocks.