岩体基本质量指标BQ与岩石坚固性系数f之间的关系研究  

Study on the Relationshipbetween BQof Rock Mass andf of Rock

作　　者：张军武 王贵秋 侯虎祥 田小旭 陶先泽 Zhang Junwu;Wang Guiqiu;Hou Huxiang;Tian Xiaoxu;Tao Xianze(China Road and Bridge Engineering Co.,Ltd.,Beijing 100011,China;Shaanxi Key Laboratory of Geotechnical and Underground Space Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China;The 10th Engineering Co.,Ltd.,of CCCC Fourth Highway Engineering Co.,Ltd.,Beijing 100022,China)

机构地区：[1]中国路桥工程有限责任公司,北京100011 [2]西安建筑科技大学陕西省岩土与地下空间工程重点实验室,陕西西安710055 [3]中交四公局第十工程有限公司,北京100022

出　　处：《市政技术》2024年第5期69-75,共7页Journal of Municipal Technology

基　　金：陕西省创新能力支撑计划-创新团队基金资助项目(2020TD-005)。

摘　　要：为了建立岩石坚固性系数f与岩体基本质量指标BQ、岩体各力学参数指标之间的关系,采用下列方法进行研究:(1)已知岩石单轴抗压强度R_C和BQ、f都存在相关关系,以R_C作为中间量,建立BQ与f的关系式;(2)已知岩体体积节理数J_V和岩石质量指标D_(RQD)、完整性指数K_V都存在相关关系,以J_V作为中间量,建立D_(RQD)与K_V的关系式,再经推导可得出BQ、f、D_(RQD)之间的关系式;(3)根据BQ、f、D_(RQD)之间的关系式,建立岩体各力学参数与f之间的关系方程;(4)将得到的研究结果用于吉尔吉斯斯坦南北路隧道工程的岩体分级及岩体各力学参数估计,据此确定施工方案,沉降变形监测结果表明,该工程施工效果良好。In order to establish the relationship between the rock consolidating coefficientf and the basic quality(BQ)index and each mechanical parameter indicator of the rock mass,the following methods were employed for research.Firstly,based on the correlations between the uniaxial compressive strength Rc of rocks and both BQ andf,Rc was as an intermediate variable to establish a relationship equation between BQ and f.Secondly,based on the correla-tions between the volume joint coefficient Jv and both the rock mass quality index DroD and integrity coefficient Kv,Jv was as an intermediate variable to establish a relationship equation between DroD and Kv.By further derivation,a relationship equation among BQ,f,and DroD can be obtained.Thirdly,based on the above relationship equation,the relationship equations of each mechanical parameters of rock mass and f were established.Finally,the research results were applied to the grading the rock mass and estimating various mechanical parameters for the mountainous tunnel engineering of South North Highway in Kyrgyzstan to determine the construction plan.The settlement defor-mation monitoring results indicate that the construction effect of the project is good.

关 键 词：BQ F 关系方程 岩体分级 参数估计 

分 类 号：U451.2[建筑科学—桥梁与隧道工程]