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鹤岗富力煤矿冲击地压的研究
STUDY ON PERCUSSION GROUND PRESSURE AT FULI COAL MINE IN HEGANG AREA
【摘要】 应用地球物理学方法研究了1998年6~12月间鹤岗富力煤矿-240五层冲击地压的地震记录.冲击地压地震震级为ML1.0~ML2.5,地震波优势频率为0.6~1.8Hz,释放能量为(2.12~19.99)×10 6J,地震矩为(1.91~5.87)×1013Nm.应力降为0.2~0.6MPa,构造环境应力值为1.12~2.49MPa.经地震学研究和宏观调查结果判断,冲击地压属岩体断裂冲击类型.
【Abstract】 geophysical method is used to study seismographic records of percussion ground pressurein Hegang-Fuli coal mine from June to December in 1998. The results show that the range forearthquake magnitude of the percussion ground pressure is ML1.0~ML2.5,that for predominantfrequency is 0.6 ~1.8Hz, for releasing energy is (2.12~19.99) 106J, for seismic moment is(1.91~5.87) 1013Nm, for stress drop is 0.2~0.6MPa and for the ambient shear stress value is1.12~2.94MPa. Based on the study the percussion ground pressure is considered as a kind ofrock breaking.
【Key words】 mining induced seismicity; percussion ground pressure; basic source parameter; Hegang-Fuli coal mine;
- 【文献出处】 世界地震工程 ,WORLD INFORMATION ON EARTHQUAKE ENGINEERING , 编辑部邮箱 ,1999年03期
- 【分类号】TD324.1
- 【被引频次】9
- 【下载频次】126