当金山隧道全风化闪长岩物理力学性能研究  

Physical and Mechanical Properties of Fully Weathered Diorite in Dangjinshan Tunnel

作　　者：何小军 杨配轻 耿士栋 HE Xiaojun;YANG Peiqing;GENG Shidong(Shijiazhuang Institute of Railway Technology,Shijiazhuang Hebei 050000,China;Jinan Technician College,Handan Hebei 056400,China)

机构地区：[1]石家庄铁路职业技术学院,河北石家庄050000 [2]冀南技师学院,河北邯郸056400

出　　处：《工程质量》2025年第4期81-84,共4页Construction Quality

基　　金：河北省高等学校科学技术研究青年基金项目-基于碳化耐久性的多组分混凝土全寿命预测研究(QN2020427);邯郸市科技计划项目-城市生活垃圾焚烧飞灰基地质聚合物制备及重金属浸出特性关键技术研究与示范(23422093463)。

摘　　要：当金山隧道出口衬砌结构边墙部位产生了长距离的纵向裂缝,问题锁定于周围岩体地质问题所引起。现场对隧底围岩钻孔取芯,结果显示全风化闪长岩遇水作用下强度急剧丧失,产生崩解现象。遵循在病害地段隧道的不同位置钻孔取样、室内试验的方法,对全风化闪长岩的物理力学性质做研究,分析不同含水率下全风化闪长岩的强度和刚度特性,从而确定了隧道开裂的实质原因,有利于保证了整治措施的有效性,并对未来隧道工程建设起到指导性意义。There are long-distance longitudinal cracks in the side wall of the lining structure at the exit of Dangjinshan tunnel.The problem is caused by the geological problems of the surrounding rock mass.Therefore,it is necessary to study the physical and mechanical properties of the surrounding rock of the tunnel.In order to further understand the physical and mechanical properties of surrounding rock in this area,the method of field sampling and laboratory test is adopted to study the physical and mechanical properties of completely weathered diorite,and the strength and rigidity characteristics of completely weathered diorite under different water content are analyzed It can provide some basis for the analysis of the causes of tunnel cracking,ensure the effectiveness of the treatment measures,and is very useful for the similar tunnel construction.

关 键 词：全风化闪长岩 不同含水率 强度 刚度 围岩软化 

分 类 号：G632[文化科学—教育学]