大田上京矿区“入”字型构造及其控煤作用  

λ-type Structure Characteristics, Genetic Mechanism and Coal-control Process Analysis in Shangjing Coal Mining area, Datian

作　　者：刘文敢[1] 

机构地区：[1]福建省197煤田地质勘探队,福建泉州362000

出　　处：《中国煤田地质》2004年第5期12-13,共2页Coal Geology of China

摘　　要：大田上京及周边矿区发育有不同性质的“入”字型断裂构造。这些断裂往往表现为张性或张扭性、压性或压扭性,强烈时表现为倒转的“拖褶曲”等。压性或压扭性分支断裂带煤层增厚,张性或张扭性则相反。这一规律对指导矿山生产有一定意义。There developed different nature λ-type faulted structures in Shangjing and peripheral mining areas,Datian,Fujian Province. They have different mechanical properties and corresponding manifestations, usually behave as tension, tenso-shear or compression,compresso-shear structures,and even overturned ″drag folds″ when the acting force was very strong. When coal seams were affected by compression or compresso-shear branching faulted zone will be built up,while affected by tension or tenso-shear structures will be on the other way round as against.Such a regular pattern is caused by different applied stress and taken shape in different mechanical properties. It has certain guiding significance in mining production.

关 键 词：构造特征 成因机制 控煤作用 

分 类 号：P542.3[天文地球—构造地质学]