基于BlockDyna的裂隙岩体压水灌浆规律数值模拟研究  

Numerical Simulation of the Open-pit Mine Goafs Control Effect by Means of Dilapidation Using Blasting Method

作　　者：裴晓龙 黄立维[1] 杨培洲 冯春[3] 朱心广 李丰年 程鹏达[3] PEI Xiaolong;Huang Liwei;YANG Peizhou;FENG Chun;ZHU Xinguang;LI Fengnian;CHENG Pengda(China Institute of Water Resources and Hydropower Research,Beijing 100044,China;Yalong River Hydropower Development Co.,Ltd.,Chengdu,Sichuan 610051,China;Key Laboratory for Mechanics in Fluid Solid Coupling Systems,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]中国水利水电科学研究院,北京100044 [2]雅砻江流域水电开发有限公司,四川成都610051 [3]中国科学院力学研究所流固耦合系统力学重点实验室,北京100190

出　　处：《水利与建筑工程学报》2021年第5期87-91,共5页Journal of Water Resources and Architectural Engineering

基　　金：雅砻江公司资助科研项目(YLLHK-LHA-G2020002);国家重点研发计划项目(2018YFC1505504)。

摘　　要：采用块体动力学分析系统(Block Dyna)中的渗流模块,对裂隙岩体中的压水灌浆规律进行了数值模拟。采用达西渗流模型描述压水过程,采用宾汉渗流模型描述灌浆过程,分别探讨了裂隙数量、裂隙开度对压水吕荣值及灌浆注入量的影响规律。计算结果表明,随着裂隙数量、裂隙开度的增大,吕荣值及浆液注入量均呈现逐渐增大的趋势。裂隙开度对压水吕荣值的影响是二次方关系,裂隙条数是一次方关系,裂隙开度对压水吕荣值的改变更为敏感。由于裂隙随机性及浆液进入截止开度等因素的影响,使得浆液最终注入量会出现局部反常现象。The seepage module in Block Dynamics Analysis System( BlockDyna) was used to simulate the process of water injecting and grouting in fractured rock mass in this paper. The water injecting process is described by Darcy seepage model,and the grouting process is described by Bingham seepage model. The influences of fracture number and fracture aperture on the Lugeon value and grouting amount were discussed respectively. The numerical results are as follows. With the increase of fracture number and fracture aperture,the Lugeon value and slurry injection volume increase gradually. The influence of fracture aperture on the Lugeon value is quadratic,and the number of fractures is quadratic. The fracture aperture is more sensitive to the change of Lugeon value. Due to the influence of fracture randomness and slurry entry cut-off aperture and other factors,the final injection volume of slurry will appear local abnormal phenomena.

关 键 词：裂隙网络 裂隙开度 裂隙渗流 数值模拟 灌浆 

分 类 号：TV543[水利工程—水利水电工程]