坠落式危岩剧动式崩落与激振效应
|
摘要
针对坠落式危岩,考虑自重和裂隙水压力影响因素作用下,建立危岩崩落激振效应物理模型。联合断裂力学和波动理论从能量角度量化危岩体之间的相互作用,获取崩塌体崩落瞬间的启程速度计算式,根据危岩崩落激振波在岩体内的传播机理,构建了激振波作用下岩体介质质点位移速度计算方法。通过实例分析,建立的坠落式危岩剧动式崩落与激振效应分析结论和实际情况基本一致,对进一步实施危岩破坏及演化机制研究提供了科学依据。
The physical model of perilous rock avalanche excitation effect is deudofed based on the effect of the main factors,such as weight and fissure water pressure.It quantizes the interaction of perilous rock masses through the energy point of fracture mechanics and wave theory,and gains the departure rate formula of landslide body at momentary avalanche.The particle displacement rate calculation method of perilous rock medium under the action of excitation waves is developed based on the formation of perilous rock avalanche excitation waves and the spread mechanism in slope rock formation.The example shows that the analysis results established are coincident with actual situation.Some scientific basis is provided for the further research of perilous rock damage and evolutionary mechanisms.
The physical model of perilous rock avalanche excitation effect is deudofed based on the effect of the main factors,such as weight and fissure water pressure.It quantizes the interaction of perilous rock masses through the energy point of fracture mechanics and wave theory,and gains the departure rate formula of landslide body at momentary avalanche.The particle displacement rate calculation method of perilous rock medium under the action of excitation waves is developed based on the formation of perilous rock avalanche excitation waves and the spread mechanism in slope rock formation.The example shows that the analysis results established are coincident with actual situation.Some scientific basis is provided for the further research of perilous rock damage and evolutionary mechanisms.
引文
[1]CHEN H K,TANG H M,YE S Q.Damage model ofcontrol fissure in perilous rock[J].AppliedMathematics and Mechanics,2006,27(7):967-974.
[2]陈洪凯,鲜学福,唐红梅.危岩稳定性断裂力学计算方法[J].重庆大学学报,2009,32(4):434-437.CHEN HONG-KAI,XIAN XUE-FU,TANG HONG-MEI.Stability analysis method for perilous rock byfracture mechanics[J].journal of ChongqingUniversity,2009,32(4):434-437.
[3]CHEN H K,TANG H M.Method to calculate fatiguefracture life of control fissure in perilous rock[J].Applied Mathematics and Mechanics,2007,28(5):643-649.
[4]陈洪凯,唐红梅,王林峰,等.危岩崩塌演化理论及应用[M].北京:科学出版社,2009.
[5]唐红梅,王林峰,陈洪凯,等.软弱基座陡崖上危岩崩落序列[J].岩土工程学报,2010,32(2),205-210.TANG HONG-MEI,WANG LIN-FENG,CHENHONG-KAI,et al.Collapse sequence of perilous rockon cliffs with soft foundation[J].Chinese Journal ofGeotechnical Engineering,2010,32(2):205-210.
[6]王林峰,陈洪凯.危岩链式规律的力学演绎[J].重庆建筑大学学报,2008,30(2):94-97.WANG LIN-FENG,CHEN HONG-KAI.Mechanicalillation for chained regularity of perilous rock[J].Journal of Chongqing Jianzhu University,2008,30(2):94-97.
[7]BRAATHEN A,BLIKRA L H,BERG S S,et al.Rock-slope failure in norway,type,geometry,deformation mechanisms and stability[J].NorweigianJournal of Geology,2004,84:67-88.
[8]刘军忠,许金东,吕晓聪,等.冲击压缩荷载下角闪岩的动态力学性能试验研究[J].岩石力学与工程学报,2009,28(10):2113-2120.LIU JUN-ZHONG,XU JIN-DONG,LV XIAO-CONG,et al.Experimental study on dynamicmechanical properties of amphibolites under impactcompressive loading[J].Chinese Journal of RockMechanics and Engineering,2009,28(10):2113-2120.
[9]FREW D J,FORESTAL M J,CHEN W.A splitHopkinson pressure bar technique to determinecompressive stress-strain data for rock materials[J].Experimental Mechanics,2001,41(1):40-46.
[10]WANG X N.Geological properties of large-scalehighspeed landslides and their mechanism models[J].Bulletin of Engineering Geology and the Environment,1991,43(1):93-99.
[11]程谦恭,胡厚田,胡广韬,等.高速岩质滑坡临床弹冲与峰残强降复合加速动力学机理[J].岩石力学与工程学报,2000,19(2):173-176.CHEN QIAN-GONG,HU HOU-TIAN,HUGUANG-TAO,et al.A study of complex accelerateddynamic mechanism of highspeed landslide by elasticrock impulse and peak residual strength drop[J].Chinese Journal of Rock Mechanics and Engineering,2008,27(8):173-176.
[12]JU Y,WANG H J,YANG Y M,et al.Numericalsimulation of mechanisms of deformation,failure andenergy dissipation in porous rock media subjected towave stresses[J].Technological Sciences,2010,53(4):1098-1113.
[13]何思明,吴永,李新坡.地震诱发岩体崩塌的力学机制[J].岩石力学与工程学报,2010,29(1):3359-3363.HE SI-MING,WU YONG,LI XIN-PO.Collapsemechanism of danger rock triggered by earthquake[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(1):3359-3363.
[14]LUIGI S.Theoretical derivation of a peak particlevelocity–distance law for the prediction of vibrationsfrom blasting[J].Rock Mech Rock Eng,2009,42(3):547-556.
[15]LIANG Q G,AN Y F,ZHAO L,et al.Comparativestudy on calculation methods of blasting vibration velocity[J].Rock Mech Rock Eng,2011,44(1):93-101.
[2]陈洪凯,鲜学福,唐红梅.危岩稳定性断裂力学计算方法[J].重庆大学学报,2009,32(4):434-437.CHEN HONG-KAI,XIAN XUE-FU,TANG HONG-MEI.Stability analysis method for perilous rock byfracture mechanics[J].journal of ChongqingUniversity,2009,32(4):434-437.
[3]CHEN H K,TANG H M.Method to calculate fatiguefracture life of control fissure in perilous rock[J].Applied Mathematics and Mechanics,2007,28(5):643-649.
[4]陈洪凯,唐红梅,王林峰,等.危岩崩塌演化理论及应用[M].北京:科学出版社,2009.
[5]唐红梅,王林峰,陈洪凯,等.软弱基座陡崖上危岩崩落序列[J].岩土工程学报,2010,32(2),205-210.TANG HONG-MEI,WANG LIN-FENG,CHENHONG-KAI,et al.Collapse sequence of perilous rockon cliffs with soft foundation[J].Chinese Journal ofGeotechnical Engineering,2010,32(2):205-210.
[6]王林峰,陈洪凯.危岩链式规律的力学演绎[J].重庆建筑大学学报,2008,30(2):94-97.WANG LIN-FENG,CHEN HONG-KAI.Mechanicalillation for chained regularity of perilous rock[J].Journal of Chongqing Jianzhu University,2008,30(2):94-97.
[7]BRAATHEN A,BLIKRA L H,BERG S S,et al.Rock-slope failure in norway,type,geometry,deformation mechanisms and stability[J].NorweigianJournal of Geology,2004,84:67-88.
[8]刘军忠,许金东,吕晓聪,等.冲击压缩荷载下角闪岩的动态力学性能试验研究[J].岩石力学与工程学报,2009,28(10):2113-2120.LIU JUN-ZHONG,XU JIN-DONG,LV XIAO-CONG,et al.Experimental study on dynamicmechanical properties of amphibolites under impactcompressive loading[J].Chinese Journal of RockMechanics and Engineering,2009,28(10):2113-2120.
[9]FREW D J,FORESTAL M J,CHEN W.A splitHopkinson pressure bar technique to determinecompressive stress-strain data for rock materials[J].Experimental Mechanics,2001,41(1):40-46.
[10]WANG X N.Geological properties of large-scalehighspeed landslides and their mechanism models[J].Bulletin of Engineering Geology and the Environment,1991,43(1):93-99.
[11]程谦恭,胡厚田,胡广韬,等.高速岩质滑坡临床弹冲与峰残强降复合加速动力学机理[J].岩石力学与工程学报,2000,19(2):173-176.CHEN QIAN-GONG,HU HOU-TIAN,HUGUANG-TAO,et al.A study of complex accelerateddynamic mechanism of highspeed landslide by elasticrock impulse and peak residual strength drop[J].Chinese Journal of Rock Mechanics and Engineering,2008,27(8):173-176.
[12]JU Y,WANG H J,YANG Y M,et al.Numericalsimulation of mechanisms of deformation,failure andenergy dissipation in porous rock media subjected towave stresses[J].Technological Sciences,2010,53(4):1098-1113.
[13]何思明,吴永,李新坡.地震诱发岩体崩塌的力学机制[J].岩石力学与工程学报,2010,29(1):3359-3363.HE SI-MING,WU YONG,LI XIN-PO.Collapsemechanism of danger rock triggered by earthquake[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(1):3359-3363.
[14]LUIGI S.Theoretical derivation of a peak particlevelocity–distance law for the prediction of vibrationsfrom blasting[J].Rock Mech Rock Eng,2009,42(3):547-556.
[15]LIANG Q G,AN Y F,ZHAO L,et al.Comparativestudy on calculation methods of blasting vibration velocity[J].Rock Mech Rock Eng,2011,44(1):93-101.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心