龙永煤田四集矿区逆冲推覆构造特征与找煤分析

Features and Coal-prospecting Analysis of Thrusting Nappe Structure Coalfield in Siji Mine Area,Longyong Coalfield

通过龙岩四集矿区逆冲推覆分析,发现推覆构造有2种类型,即层间逆冲推覆构造和基底逆冲推覆构造;它们对含煤地层的控制具有一定的规律性:其一,层间逆冲推覆构造,应寻找倾向上的富煤带;其二,基底逆冲推覆构造应找下伏系统的富煤带。进行此项研究为龙永东部煤田进一步寻找富煤带指明了方向。

Through analysis of the thrusting nappe structure in Siji mine area, Longyan Coalfield, two types of nappe structures, such as interstratified thrusting nappe structure and basement thrusting nappe structure are discovered, which have a certain rules of controling coal - bearing stratum, first, for the interstratified nappe structure, coal- rich zone should be searched along the trend ; Second, the basement nappe, it should be done in the underlying system. The study show the right direction of further looking for coal - rich zones in the east of Longyan coalfield.