新汶煤田东部地质构造发育机制及其成因分析  

Analysis of the geological structural development mechanism and the causes of the eastern of Xinwen coalfi eld

作　　者：景行[1] 

机构地区：[1]山东科技大学地质科学与工程学院,山东青岛266590

出　　处：《山东煤炭科技》2015年第5期173-174,177,179,共4页Shandong Coal Science and Technology

摘　　要：简述了新汶煤田东部的地质构造发育规律,煤田断层多为高角度正断层;总结了此区域内"X"型断裂体系对煤田断层形成的影响;借用力源分析,研究了中生代以来,鲁西地区的断裂构造发育变更机制,结合莫尔—库仑破裂理论分析,提出了断裂经过NNW^SSE向的水平挤压和NNE^SSW向的引张力,后又接受SWW^NEE向的水平挤压,再经过近EW向和NW^SE向的挤压改造,形成了很大的上盘下滑断距,漫长地质活动后正断层得以保存。In this paper introduced the development law of the geological structure in the Eastern of Xinwen coalifeld which is the normal faults with high angle;summarized the impact of X shaped fracture system on the formation of coalifeld faults in this area;by the source analysis, studied the development and change mechanism of the fracture structure in Luxi area since Mesozoic, combined with the Mohr Coulomb failure theory analysis, put forward the fracture structure suffered the NNW-SSE trending horizontal compressive and the NNE^SSW tension , and then the SWW^NEE horizontal compression, and the approximate EW and NW to SE reformation of extrusion, which formed large fault displacement, after the endless geological activity , the normal fault was retained.

关 键 词：新汶煤田 “X”型断裂 正断层 压扭应力 

分 类 号：P542.31[天文地球—构造地质学]