甘肃北山地质处置库围岩节理抗剪强度经验估算
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摘要
节理抗剪强度参数是地质处置库预选地段工程地质对比和围岩稳定性分析的重要指标。本文在旧井地段英云闪长岩节理分组的基础上,运用定向统计测量方法估测节理粗糙度系数,通过评价节理粗糙度系数的尺寸效应,确定节理抗剪强度经验估算有效长度,由JRC-JCS模型求得各组节理4个方向的抗剪强度参数,并评价了地质处置库围岩节理抗剪强度的各向异性特征。
Shear strength of rock joints is an important parameter for both comparison of engineering geological conditions and stability analysis of the rock mass surrounding the pre-selected area of geological disposal repository.Based on grouping of the tonalite joints in Jiujing area,the directive statistical evaluation method was used to estimate the joint roughness coefficient(JRC).Effective length for empirical estimation of joint shear strength values was determined through the evaluation of scale dependence of JRC.Shear strength parameters along four directions of each joint group were calculated by using the JRC-JCS model.Finally,anisotropic characteristic of the rock joint shear strength was evaluated.
Shear strength of rock joints is an important parameter for both comparison of engineering geological conditions and stability analysis of the rock mass surrounding the pre-selected area of geological disposal repository.Based on grouping of the tonalite joints in Jiujing area,the directive statistical evaluation method was used to estimate the joint roughness coefficient(JRC).Effective length for empirical estimation of joint shear strength values was determined through the evaluation of scale dependence of JRC.Shear strength parameters along four directions of each joint group were calculated by using the JRC-JCS model.Finally,anisotropic characteristic of the rock joint shear strength was evaluated.
引文
[1]王驹.我国高放废物深地质处置战略规划探讨[J].铀矿地质,2004,20(4):196~204.W ang Ju.Strategic program for deep geological d isposal of h ighlevel rad ioactive waste in Ch ina.Uran ium Geology,2004,20(4):196~204.
[2]杨春和.甘肃北山预选区BS01、BS02、BS03号孔周围节理调查及三维模拟研究[M].武汉:中国科学院武汉岩土力学研究所,2004.Yang Chunhe.Investigation and 3D simu lation of joints aroundholes BS01,BS02,BS03 in Beishan preselected area.GansuProvince.W uhan Institute ofRock and SoilM echan ics,Ch inese A-cademy of Sciences,2004.
[3]杜时贵.简易纵剖面仪及其在岩体结构面粗糙度系数研究中的应用[J].地质科技情报,1992,11(3):91~95.Du Sh igu i.S imple profile instrum ent and its application on stud-ying joint roughness coefficients of rock d iscontinu ities.GeologicalScience and Technology Information,1992,110(3):91~95.
[4]杜时贵,陈禹,樊良本.JRC修正直边法的数学表达[J].工程地质学报,1996,4(2)36~43.Du Sh igu i,et al..Mathematical expression of JRC mod ified straightedge.Journal of Engineering Geology,1996,4(2):36~43.
[5]杜时贵.岩体结构面抗剪强度经验估算[M].北京:地震出版社,2004.Du Sh igu i.Emp irical estimation for the shear strength of rock d is-continu ities.Beijing:Seism ic Press,2004.
[6]刘月妙,王驹.高放废物地质处置岩石力学研究进展[A].核工业北京地质研究院论文集[C],2004.L iu Yuem iao,W ang Ju.Research advances in rock m echan ics ofgeological d isposal of h igh level rad ioactive waste.Beijing Re-search Institute ofUran ium Geology,2004.
[7]Hoek E&B ray J W..Rock slope engineering[M].London:IMM,1981.
[8]Barton N&Choubey V..The shear strength of rock joints in theo-ry and practice[J].Rock M ech.,1977,10,1~54.
[9]杜时贵,颜育仁,胡晓飞,郭霄.JRC-JCS模型抗剪强度估算的平均斜率法[J].工程地质学报,2005,13(3):489~493.Du Sh igu i,et al..Average slope m ethod for estimating shearstrength of JRC-JCS model.Journal of Engineering Geoloy,2005,13(3):489~493.
[2]杨春和.甘肃北山预选区BS01、BS02、BS03号孔周围节理调查及三维模拟研究[M].武汉:中国科学院武汉岩土力学研究所,2004.Yang Chunhe.Investigation and 3D simu lation of joints aroundholes BS01,BS02,BS03 in Beishan preselected area.GansuProvince.W uhan Institute ofRock and SoilM echan ics,Ch inese A-cademy of Sciences,2004.
[3]杜时贵.简易纵剖面仪及其在岩体结构面粗糙度系数研究中的应用[J].地质科技情报,1992,11(3):91~95.Du Sh igu i.S imple profile instrum ent and its application on stud-ying joint roughness coefficients of rock d iscontinu ities.GeologicalScience and Technology Information,1992,110(3):91~95.
[4]杜时贵,陈禹,樊良本.JRC修正直边法的数学表达[J].工程地质学报,1996,4(2)36~43.Du Sh igu i,et al..Mathematical expression of JRC mod ified straightedge.Journal of Engineering Geology,1996,4(2):36~43.
[5]杜时贵.岩体结构面抗剪强度经验估算[M].北京:地震出版社,2004.Du Sh igu i.Emp irical estimation for the shear strength of rock d is-continu ities.Beijing:Seism ic Press,2004.
[6]刘月妙,王驹.高放废物地质处置岩石力学研究进展[A].核工业北京地质研究院论文集[C],2004.L iu Yuem iao,W ang Ju.Research advances in rock m echan ics ofgeological d isposal of h igh level rad ioactive waste.Beijing Re-search Institute ofUran ium Geology,2004.
[7]Hoek E&B ray J W..Rock slope engineering[M].London:IMM,1981.
[8]Barton N&Choubey V..The shear strength of rock joints in theo-ry and practice[J].Rock M ech.,1977,10,1~54.
[9]杜时贵,颜育仁,胡晓飞,郭霄.JRC-JCS模型抗剪强度估算的平均斜率法[J].工程地质学报,2005,13(3):489~493.Du Sh igu i,et al..Average slope m ethod for estimating shearstrength of JRC-JCS model.Journal of Engineering Geoloy,2005,13(3):489~493.
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