偃龙矿区断裂构造发育规律研究

Research on development law of fault structures in Yanlong mining area

以节理、裂隙跟踪描述与统计分析的方法,研究了矿区节理、裂隙发育特征。通过跟踪观测的工作面,统计了龙门与常村矿断裂构造,总结了断裂构造的发育规律。研究得出,偃龙矿区内大型断裂构造与小型节理成因相同,大型断裂构造控制着小型断裂的发育程度;主要发育北北东至北东、北西、北西西3组高角度剪节理和断裂(多为正断层);大型断裂与小型节理存在约20°偏角;断裂与节理的优势发育方向略有不同,不同地层的优势方向剪节理也略有差异。

This paper mainly studies the development characteristics of joints and fissures in the mining area by the methods of tracking description and statistical analysis of joints and fissures.The fault structures of Longmen and Changcun Mines were counted by tracking and observing the working face.The development law of the fault structure is summarized.The study concluded that the origin of large-scale fault structures and small-scale joints is the same in the Yanlong mining area,and the large-scale fault structures control the development degree of small-scale faults,mainly developing three sets of high angle shear joints and faults(mostly normal faults)from NNE to NE,NW,and NWW.Large faults and small joints have a declination angle of about 20°.The dominant development directions of faults and joints are slightly different,and the dominant direction of shear joints in different strata is also slightly different.