甘肃北山花岗岩岩体结构面粗糙度系数(JRC)研究
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摘要
岩体结构面表面形态研究对岩石工程结构体强度及变形特征研究评价具有重要的指导意义。文章评述了现有岩体结构面粗糙度系数(JRC)的各种测定方法及存在的问题,分析了在高放废物处置库预选场址甘肃北山花岗岩地区,用"简易纵剖面仪"进行地表岩体及钻孔岩心裂隙结构面JRC的测量结果。
The study on joint roughness coefficient of rock mass has important significance,especially on the safety assessment study of deep underground architectures.In this paper,the authors present several existing measurement methods of joint roughness coefficient(JRC),and analyses the disadvantages of these methods.After that,the authors take Beishan of Gansu province for the HLW disposal area as the example,and measure the joint roughness coefficient(JRC) of surface rock mass and cores of borehole.According to analyzed results of these data,the study shows the relation of surface seesaw scope contour and joint roughness coefficient(JRC),meanwhile,studies the rate of scale effect of JRC with the different length of joint surface.The study shows that the simple profile instrument has extensive application foreground.
The study on joint roughness coefficient of rock mass has important significance,especially on the safety assessment study of deep underground architectures.In this paper,the authors present several existing measurement methods of joint roughness coefficient(JRC),and analyses the disadvantages of these methods.After that,the authors take Beishan of Gansu province for the HLW disposal area as the example,and measure the joint roughness coefficient(JRC) of surface rock mass and cores of borehole.According to analyzed results of these data,the study shows the relation of surface seesaw scope contour and joint roughness coefficient(JRC),meanwhile,studies the rate of scale effect of JRC with the different length of joint surface.The study shows that the simple profile instrument has extensive application foreground.
引文
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[2]徐健,王驹.利用岩石质量指标和岩体块度指数进行岩体质量评价研究[J].铀矿地质,2006.22(5):295~299.
[3]潘别桐.岩体结构面的变形习性及应用[J].四川水力发电,1989.(4):33~43.
[4]王建锋.岩体结构面粗糙度JRC研究进展[J].地质科技情报,1991.10(2):73~78.
[5]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.
[6]王驹,侯惠群,郭永海,等.甘肃北山预选区深部地质环境初步研究[R].核工业北京地质研究院,2001.
[7]张喜发主编.岩土工程勘察与评价:工程地质[M].长春:吉林科学技术出版社,1995,77~82.
[8]杜时贵著.岩体结构面的工程性质[M].北京:地震出版社,1999.1~13.
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