CAJ | 학술논문

湖南省凤凰至大兴公路K0+500-K5+000段穿越碳酸盐岩区,据地面调查及钻探揭露,公路沿线发育溶洞,对区内岩溶地质环境进行了调查.选取典型溶洞,采用有限元稳定性分析方法对岩溶体稳定性进行分析,路堑开挖后产生的位移为1.2mm,最大主应力为6.3MPa,运营状态下静力荷载20kPa,通过计算溶洞在路堑开挖后和车辆荷载作用下位移场与应力场变化情况,认为溶洞是稳定的.
호남성봉황지대흥공로K0+500-K5+000단천월탄산염암구,거지면조사급찬탐게로,공로연선발육용동,대구내암용지질배경진행료조사.선취전형용동,채용유한원은정성분석방법대암용체은정성진행분석,로참개알후산생적위이위1.2mm,최대주응력위6.3MPa,운영상태하정력하재20kPa,통과계산용동재로참개알후화차량하재작용하위이장여응력장변화정황,인위용동시은정적.
Fenghuang-Daxing highway k0 + 500 - k5 + 000 section passes through carbonate rocks zone.According to ground investigation and drilling exposition materials, the paper verifies the limestone cave situation and investigates the karst geological environment.In order to evaluate the stability of typical karst cave, a series of finite-element analysis method was done, as well as a conclusion was drawn that if cuts is excavated according to the standard, the maximum displacement should be 1.2mm.The maximum principal stress was 6.3MPa under the excavating condition and the maximum static load was 20KPa in cave periphery.Using the present method, the stability of No.10 karst cave was calculated and the feasibility of design was evaluated.