摘要
为研究喷锚支护作用机理及其对围岩的加固效果,采用模型试验和数值计算方法,分别对洞室围岩介质应变、洞壁位移、锚杆应变和纵向应力进行了量测和模拟,研究了喷锚支护在均质围岩中的受力特点和变形特征,分析了支护参数选择对加固效果的影响以及单独喷锚支护和喷锚联合支护在围岩加固效果上的区别.采用有限差分软件得出的结果与试验数据的吻合性较好,进一步证实了模型参数和建模的有效性和正确性.并根据试验结果,提出了较合理的锚杆参数选择及布置的建议.
As research on the action mechanism and the reinforce effectiveness of spray-bolt supporting to wall rock,the model testing and the numerical simulation is used in this paper.The strain inner enclosing rock,displacement of wall,anchorage strain,longitudinal stress are measured and recorded,and the stress feature and the deformation character of spray-bolt supporting in the homogeneous wall rock are researched.And the effect of reinforce effectiveness from selecting of supporting parameter is explored.And then,the reinforce effectiveness of wall rock supported by singly anchorage and spray-bolt supporting analyzed.The calculated result from the finite difference software is similar to the testing data,which could prove the effectiveness and accuracy of parameter selecting and model building.Finally,the reasonable advice on anchorage support parameter and layout scheme is given according to the result.
出处
《武汉理工大学学报（交通科学与工程版）》
2011年第2期401-405,共5页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
关键词
隧道工程
喷锚支护
洞室加固
受力特征
模型试验
数值模拟
gunned-anchoring support
chamber reinforcement
stress feature
model test
numerical simulation
作者简介
董武（1966-）：男，高级工程师，主要研究领域为土木工程
