爆破2025，Vol.42Issue(3)：46-53,8.DOI:10.3963/j.issn.1001-487X.2025.03.006
不同倾角充填节理相似岩体动力特性试验研究
Experimental Study on Dynamic Characteristics of Similar Rock Mass with Filled Joints at Different Dip Angles
摘要
Abstract
The presence of joint fractures significantly influences the dynamic performance of the rock mass.To investigate the effects of joint angles and filling materials on the dynamic response of filling joint samples under im-pact loading,a series of impact tests were conducted using a split Hopkinson pressure bar(SHPB).Samples with sev-en different joint angles and three types of filling materials were tested.The relationships between dynamic character-istics,energy dissipation,joint angles,and properties of the filling material were systematically analyzed.The results indicate that:(1)The stress-strain curves of the joint samples of different filling media are significantly different.The stress-strain curves of sediment and lime filling samples show plastic failure characteristics at joint angle α ≤45° and brittle failure at joint angle α＞45°,while gypsum filled samples primarily display brittle failure,except at joint angle α=45°,where plastic failure occurs due to stress wave propagation effects.(2)The dynamic compressive strength of joint samples with the same filling material initially decreases and then increases with the increasing joint angle α,reaching a minimum value at α=45°.Among the three filling materials,gypsum-filled joints exhibit the highest compressive strengths.(3)Energy dissipation characteristics vary with joint angle.The reflected energy ratio increases initially and then decreases,peaking at α=45 °,while the transmitted and absorbed energy ratios decrease initially and then increase,reaching their lowest values at α=45 °.These findings provide critical insights into the dynamic behavior of jointed rock masses and have practical implications for engineering applications involving impact or blast loading.关键词
SHPB/节理倾角/充填介质/动力特性/能量耗散规律Key words
SHPB/joint angles/filling material/dynamic characteristics/energy dissipation law分类
矿业与冶金引用本文复制引用
王智德,吴洋,杨文东,吝曼卿,祝文化,胡世士,魏巍,邸月康..不同倾角充填节理相似岩体动力特性试验研究[J].爆破,2025,42(3):46-53,8.基金项目
国家自然科学基金(No.42077228、No.51374163) （No.42077228、No.51374163）
磷资源开发利用教育部工程研究中心开放基金资助(No.LKF202004) （No.LKF202004）
武汉市城乡建设委员会科技计划项目(武城建[2017]12号-201740、武城建[2019]68号-201941) National Natural Science Foundation of China(42077228,51374163) （武城建[2017]12号-201740、武城建[2019]68号-201941）
the Open Project of Engineering Research Center of Phos-phorus Resources Development and Utilization of Ministry of Education(LKF202004) （LKF202004）
the Science and Technology Program of Wuhan Municipal Urban-Rural Development Bureau([2017]12-201740,[2019]68-201941). （[2017]12-201740,[2019]68-201941）
