长应力波作用下深埋硐室围岩-衬砌应力状态解析  

Analysis of stress state in deep-buried chamber’s surrounding rock and linings under the effect of long stress waves

作　　者：李杰 郭纬 蒋海明 陈伟 施杰 LI Jie;GUO Wei;JIANG Haiming;CHEN Wei;SHI Jie(State Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact,Army Engineering University of PLA,Nanjing 210007,China;Engineering Quality Supervision Center,Logistics Support Department of CMC,Beijing 100850,China)

机构地区：[1]陆军工程大学爆炸冲击防灾减灾重点实验室,江苏南京210007 [2]军委后勤保障部工程质量监督中心,北京100850

出　　处：《防护工程》2023年第5期36-40,共5页Protective Engineering

基　　金：国家自然科学基金面上项目(5227920)

摘　　要：在地下爆炸中远区,作用在结构上的地冲击应力波可视作长平面波,利用拟静法对长应力波作用下围岩与衬砌之间的相互作用展开了分析,围岩本构选取弹脆性模型,围岩塑性区判别选用Tresca屈服准则,得到了非均布荷载下围岩-衬砌体系的弹塑性应力状态,并依此建立了围岩自承能力和最小防护层厚度计算方法。In the medium and far zone of underground explosions,the underground stress waves acting on structures can be considered as long-planar waves.Using the quasistatic method,an analysis of the interaction between the surrounding rock and lining under the influence of longitudinal stress waves is carried out.The constitutive model for the surrounding rock is chosen as the elastic-brittle model,and the Tresca yield criterion is used to determine the plastic zone in the surrounding rock.This analysis results in the elastic-plastic stress state of the surrounding rock-lining system under non-uniform loading,and based on this,methods for calculating the self-supporting capacity of the surrounding rock and the minimum protective layer thickness are established.

关 键 词：地下硐室 衬砌支护 长应力波 拟静法 围岩塑性区 

分 类 号：TD354[矿业工程—矿井建设]