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作 者:马继[1] 杜强 熊良宵 MA Ji;DU Qiang;XIONG Liang-xiao(Sichuan Huadi Construction Engineering Co.Ltd.Sichuan,Chengdu 610081,China;College of Environment and Civil Engineering,Chengdu University of Technology,Chengdu 610059,China;School of Civil Engineering and Architecture,East China Jiaotong University,Nanchang 330013,China)
机构地区:[1]四川省华地建设工程有限责任公司,成都610081 [2]成都理工大学环境与土木工程学院,成都610059 [3]华东交通大学土木与建筑学院,南昌330013
出 处:《地质灾害与环境保护》2024年第3期75-80,共6页Journal of Geological Hazards and Environment Preservation
摘 要:为了研究交叉裂隙隧道围岩的稳定性的影响,对含隧道和裂隙的模型试样进行单轴压缩试验和数值模拟,研究主裂隙的倾角、裂隙端部距洞壁的距离、裂隙的长度、主次裂隙的夹角对模型的抗压强度的影响。研究结果表明当其它参数不变时,随着主裂隙的倾角由0°增加到180°时,模型的抗压强度呈先减小后增加的变化规律,当主裂隙的倾角为90°时,模型的抗压强度最小。裂隙端部距洞壁的距离对模型的抗压强度影响无规律。当其它参数相同时,裂隙的长度越长,模型的抗压强度越小。主次裂隙的夹角对模型的抗压强度有明显影响。In order to study the influence of the stability of the surrounding rock of intersecting crack tunnels, uniaxial compression tests and numerical simulations were conducted on model specimens containing tunnel and cracks. The effects of the inclined angle of the main crack, the distance between the crack end and the tunnel wall, the length of the crack, and the angle between the primary and secondary cracks on the compressive strength of the model were studied. The research results indicate that when other parameters remain unchanged, the compressive strength of the model shows a pattern of first decreasing and then increasing as the inclined angle of the main crack increases from 0° to 180°. When the inclined angle of the main crack is 90°, the compressive strength of the model is the smallest. The distance between the crack end and the tunnel wall has an irregular effect on the compressive strength of the model. When other parameters are the same, the longer the crack length, the smaller the compressive strength of the model. The angle between primary and secondary cracks has a significant impact on the compressive strength of the model.
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