Analysis of faults stability with dynamic phenomena in the mice based on slide criterion and in-situ stress measurement
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摘要
<正> For the study on the relationship between the dynamic phenomena in the min- ing such as mine earthquakes,outburst and faults slide,firstly,double shear friction ex- periments of sandstone were made,and its slide criterion was suggested considering the viewing of engineering.Secondly,in order to study the stability of underground rock and zone of tectonic stress field,based on the analysis on distribution characteristic of initial rock stress measurements,the geology structural model was built and tectonic stress field was made a back-analysis by applying finite element method.The calculating results fit with the analysis result of earthquakes mechanism and the distribution characteristic of the measurements.The high stress regional centers station locates discontinuous zone of I level faults and is corresponding to underground earthquakes scene.From then it is cer- tain that tectonic stress is the major origin and necessary condition of mine earthquakes. The instability slide of the faults is the main manifest and the mining activity is the leading factor.Beipiao fault has a dominate effect on other sub faults and tectonic stress area and is dynamical fountain of dynamic phenomena in the Beipiao Mines.
For the study on the relationship between the dynamic phenomena in the min- ing such as mine earthquakes,outburst and faults slide,firstly,double shear friction ex- periments of sandstone were made,and its slide criterion was suggested considering the viewing of engineering.Secondly,in order to study the stability of underground rock and zone of tectonic stress field,based on the analysis on distribution characteristic of initial rock stress measurements,the geology structural model was built and tectonic stress field was made a back-analysis by applying finite element method.The calculating results fit with the analysis result of earthquakes mechanism and the distribution characteristic of the measurements.The high stress regional centers station locates discontinuous zone of I level faults and is corresponding to underground earthquakes scene.From then it is cer- tain that tectonic stress is the major origin and necessary condition of mine earthquakes. The instability slide of the faults is the main manifest and the mining activity is the leading factor.Beipiao fault has a dominate effect on other sub faults and tectonic stress area and is dynamical fountain of dynamic phenomena in the Beipiao Mines.
For the study on the relationship between the dynamic phenomena in the min- ing such as mine earthquakes,outburst and faults slide,firstly,double shear friction ex- periments of sandstone were made,and its slide criterion was suggested considering the viewing of engineering.Secondly,in order to study the stability of underground rock and zone of tectonic stress field,based on the analysis on distribution characteristic of initial rock stress measurements,the geology structural model was built and tectonic stress field was made a back-analysis by applying finite element method.The calculating results fit with the analysis result of earthquakes mechanism and the distribution characteristic of the measurements.The high stress regional centers station locates discontinuous zone of I level faults and is corresponding to underground earthquakes scene.From then it is cer- tain that tectonic stress is the major origin and necessary condition of mine earthquakes. The instability slide of the faults is the main manifest and the mining activity is the leading factor.Beipiao fault has a dominate effect on other sub faults and tectonic stress area and is dynamical fountain of dynamic phenomena in the Beipiao Mines.
引文
[1] Brace W F,Byerlee J D.Stick-slip as a mechanism for earthquakes[J].Science,1966,153:992-999．
[2] Dieterich J H.Modeling of rock friction experimental results and contitutive[J].J.Geophys.Res.,1979,84:2 168-2 173．
[3] Ruina A L.Slip instability and state variable friction laws[J].J.Geophys.Res.,1983,88:10 359-10 370．
[4] Scholz S H.Earthquake and friction laws[J].Nature,1998,391(1) :37-42．
[5] 何昌荣.两种摩擦本构关系的对比研究[J].地震地质,1999,21(2) :137-146． He Changrong.Comparing two types of rate and state dependent friction laws[J].Seismology and Geology,1999,21(2) :137-146．
[6] 王泽利,何昌荣,周永胜,等.断层摩擦实验中的应力状态及摩擦强度[J].岩石力学与工程学报,2004,23(23) :4 079-4 083． Wang Zeli,He Changrong,Zhou Yongsheng,et al.Stress state and frictional strength obtained with frictional experiments of fault[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(23) :4 079-4 083．
[7] Byerlee J D.Friction of rocks[J].Pure Appl.Geopliys,1978,116:615-626．
[8] Raleigh C B,Healy J H,Bredehoeft J D.An experiment in earthquake control at Rangely,Colorado[J].Science,1976,191:1 230-1 237．
[9] Zoback M D,Stephen Hichman.In site study of the physical mechanisics controlling induced seismicity at Monticello reservoir south Carolina[J].J.Geophys.Res.,1982,87:6 959-6 974．
[10] 张伯崇,马元春.岩石摩擦性状的试验和断层滑动准则的讨论[A].地壳构造与应力文集[C].北京:地震出版社,1987:136-145． Zhang Bochong,Ma Yuanchun.The experiments on frictional behaviors rocks and a discussion on criterion of fault slide[A].Proc.of the 1st Crustal Tectonic and Stress[C].Beijing:Seismological Press,1987:136-145．
[2] Dieterich J H.Modeling of rock friction experimental results and contitutive[J].J.Geophys.Res.,1979,84:2 168-2 173．
[3] Ruina A L.Slip instability and state variable friction laws[J].J.Geophys.Res.,1983,88:10 359-10 370．
[4] Scholz S H.Earthquake and friction laws[J].Nature,1998,391(1) :37-42．
[5] 何昌荣.两种摩擦本构关系的对比研究[J].地震地质,1999,21(2) :137-146． He Changrong.Comparing two types of rate and state dependent friction laws[J].Seismology and Geology,1999,21(2) :137-146．
[6] 王泽利,何昌荣,周永胜,等.断层摩擦实验中的应力状态及摩擦强度[J].岩石力学与工程学报,2004,23(23) :4 079-4 083． Wang Zeli,He Changrong,Zhou Yongsheng,et al.Stress state and frictional strength obtained with frictional experiments of fault[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(23) :4 079-4 083．
[7] Byerlee J D.Friction of rocks[J].Pure Appl.Geopliys,1978,116:615-626．
[8] Raleigh C B,Healy J H,Bredehoeft J D.An experiment in earthquake control at Rangely,Colorado[J].Science,1976,191:1 230-1 237．
[9] Zoback M D,Stephen Hichman.In site study of the physical mechanisics controlling induced seismicity at Monticello reservoir south Carolina[J].J.Geophys.Res.,1982,87:6 959-6 974．
[10] 张伯崇,马元春.岩石摩擦性状的试验和断层滑动准则的讨论[A].地壳构造与应力文集[C].北京:地震出版社,1987:136-145． Zhang Bochong,Ma Yuanchun.The experiments on frictional behaviors rocks and a discussion on criterion of fault slide[A].Proc.of the 1st Crustal Tectonic and Stress[C].Beijing:Seismological Press,1987:136-145．
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