深部开采突水机制的细观分析和临界破坏行为
|
摘要
深部开采中高岩溶水压极易造成围岩突水,而突水通道主要是由一系列的小破裂发展演化而成,因为小破裂的积累形成大的破裂,从而演化到突变。本文分别在二维和三维情况下利用重整化群方法分析已破裂单元对未破裂单元的应力转移,计算原胞的临界破坏概率、关联指数和分形维数。同时对岩层突水的临界特性进行研究,由临界破坏特征和裂缝密度与损伤变量的关系,并考虑加载和岩石初始损伤的影响,得到在静态损伤力学网络下的岩石突水破裂损伤演变方程。
High karst water burst causes water-inrush easily in deep mining engineering.Water-inrush channel are mainly from a series of small break,and small accumulated breaks form big break,and develope to the mutation.In the case of 6=2 and 6=3(b is the change of correlation dimension),the stress transfer from broken element to unbroken element by renormalization group is analysed,and the critical broken probability,correlation index and fractal dimension are calculated.The critical behaviour of water burst is researched.With the relations of critical broken behaviour,crack density and damage variation,a water burst damage evolution equation under statistical damage mechanics network is suggested by considering the effect of loading rate and initial damage in rock.
High karst water burst causes water-inrush easily in deep mining engineering.Water-inrush channel are mainly from a series of small break,and small accumulated breaks form big break,and develope to the mutation.In the case of 6=2 and 6=3(b is the change of correlation dimension),the stress transfer from broken element to unbroken element by renormalization group is analysed,and the critical broken probability,correlation index and fractal dimension are calculated.The critical behaviour of water burst is researched.With the relations of critical broken behaviour,crack density and damage variation,a water burst damage evolution equation under statistical damage mechanics network is suggested by considering the effect of loading rate and initial damage in rock.
引文
[1]刘爱华,彭述权,李夕兵,陈红江.深部开采承压突水机制相似物理模型试验系统研制及应用[J].岩石力学与工程学报[J].2009,28(7):1335-1341.
[2]何满潮,谢和平,彭苏萍,姜耀东.深部开采岩体力学研究[J].岩石力学与工程学报,2005,24(16):2803-2813.
[3]王建国,宋杨.煤层底板突水自组织临界特性研究[J].岩石力学与工程学报,2005,21(8):1205-1208.
[4]周子龙,李夕兵,赵国彦.民窿空区群级联失稳评价[J].自然灾害学报,2007,16(5):91-95.
[5]邵鹏,张勇,贺永年,张东升.岩石爆破逾渗断裂行为与块度分布研究[J].中国矿业大学学报,2004,33(6): 635-640.
[6]Z.H.Chen,L.G.Tham,M.R.Yeung,Y.Tsui,and P.K.K.Lee. A Study on the Peak Strength of Brittle Rocks[J].Rock Mechanics and Rock Engineering,2002,35(4):255-270.
[7]M.Borri-Brunetto,A.Aarpinteri,and B.Chiaia.The Effect of Scale and Criticality in Rock Slope Stability[J].Rock Mechanics and Rock Engineering,2004,37(2):117-126.
[8]周子龙.岩石动静组合加载试验与力学特性研究[D].长沙:中南大学,2007.
[9]张海林,杨善让,徐志明,王升龙,白立新.提高重整化群精度的一个尝试[J].工程热物理学报,2003,24(6): 992-994.
[10]何超,吕绪良,高福银,贾其.二维导电点渗流参数的重整化群法计算[J].应用科学学报,2010,28(2): 170-174.
[11]赖勇,张永兴.岩体微裂纹密度确定方法及应用[J].土木建筑与环境工程,2009,31(2):51-56.
[12]KACHANOV M.Effective elastic properties of crack solids,critical review of some basic concepts[J].Appl. Mech.Review,1992,45(7):304-335.
[13]BUDIANSKY B and O'CONNELL RJ.Elastic moduli of a cracked solids[J].Int.J.Solids Struct.,1976,12(1): 81-95.
[14]CHRISTENSE RM,LO K H.Solutions for effective shear properties in three phase sphere and cylindermodels[J]. Phys.Solids,1979,27:315-330.
[15]ABOUDI J,BENVENSITE Y.The effective moduli of cracked bodies in phase deformations[J].Eng.Fract. Mech.,1987,26:171-184.
[16]HUANG Y.HU K,CHANDRA A,A generalized selfconsistent mechanics method for microcracked solid[J]. J.Mech.Phys.Solids,1994,42(8):1273-1291.
[17]程久龙,岩体测试与探测[M].北京:地震出版社,2000.
[18]SaoPeng,Xu Zhi-wei,Zhang Hou-quan,He Yong-nian. Evolution of blast-induced rock damage and fragmentation prediction[J].Procedia Earth and Planetary Science1, 2009,585-591.
[2]何满潮,谢和平,彭苏萍,姜耀东.深部开采岩体力学研究[J].岩石力学与工程学报,2005,24(16):2803-2813.
[3]王建国,宋杨.煤层底板突水自组织临界特性研究[J].岩石力学与工程学报,2005,21(8):1205-1208.
[4]周子龙,李夕兵,赵国彦.民窿空区群级联失稳评价[J].自然灾害学报,2007,16(5):91-95.
[5]邵鹏,张勇,贺永年,张东升.岩石爆破逾渗断裂行为与块度分布研究[J].中国矿业大学学报,2004,33(6): 635-640.
[6]Z.H.Chen,L.G.Tham,M.R.Yeung,Y.Tsui,and P.K.K.Lee. A Study on the Peak Strength of Brittle Rocks[J].Rock Mechanics and Rock Engineering,2002,35(4):255-270.
[7]M.Borri-Brunetto,A.Aarpinteri,and B.Chiaia.The Effect of Scale and Criticality in Rock Slope Stability[J].Rock Mechanics and Rock Engineering,2004,37(2):117-126.
[8]周子龙.岩石动静组合加载试验与力学特性研究[D].长沙:中南大学,2007.
[9]张海林,杨善让,徐志明,王升龙,白立新.提高重整化群精度的一个尝试[J].工程热物理学报,2003,24(6): 992-994.
[10]何超,吕绪良,高福银,贾其.二维导电点渗流参数的重整化群法计算[J].应用科学学报,2010,28(2): 170-174.
[11]赖勇,张永兴.岩体微裂纹密度确定方法及应用[J].土木建筑与环境工程,2009,31(2):51-56.
[12]KACHANOV M.Effective elastic properties of crack solids,critical review of some basic concepts[J].Appl. Mech.Review,1992,45(7):304-335.
[13]BUDIANSKY B and O'CONNELL RJ.Elastic moduli of a cracked solids[J].Int.J.Solids Struct.,1976,12(1): 81-95.
[14]CHRISTENSE RM,LO K H.Solutions for effective shear properties in three phase sphere and cylindermodels[J]. Phys.Solids,1979,27:315-330.
[15]ABOUDI J,BENVENSITE Y.The effective moduli of cracked bodies in phase deformations[J].Eng.Fract. Mech.,1987,26:171-184.
[16]HUANG Y.HU K,CHANDRA A,A generalized selfconsistent mechanics method for microcracked solid[J]. J.Mech.Phys.Solids,1994,42(8):1273-1291.
[17]程久龙,岩体测试与探测[M].北京:地震出版社,2000.
[18]SaoPeng,Xu Zhi-wei,Zhang Hou-quan,He Yong-nian. Evolution of blast-induced rock damage and fragmentation prediction[J].Procedia Earth and Planetary Science1, 2009,585-591.
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