The stress state of geological structure and mining dynamic disaster in Fuxin basin

• 来源期刊: 煤炭学报(英文版)
• 年，卷（期）: 2008,（4）
• 页码范围: 621-624
• 页数: 4页
• 语种: 英文

摘要

Further evidences show that most mining dynamic disasters are mainly occurred nearby NNE and near SN geological structures.In-situ stress measurement in Fuxin basin shows that the orientation of major compressed stress is near EW.At this stress field,geological structures with deferent strike have deferent stress state and displace mode.NNE and near SN geological structures are compressed to thrust and come into being high stress zone.NWW and NEE geological structures are tensile to separate and not prone to being low stress zone.NW structure is intervenient of them.So NEE and near SN structures are easy to occurre mining dynamic disasters and NWW and NEE structures is "safety" comparatively.The mining dynamic disaster is controlled by stress state of geologic structure,which is determined by its strike.