摘要
为了评价柘溪水电站进水口边坡的稳定性,首先根据现场实际监测数据进行评价,然后采用有限差分法对边坡典型剖面开挖时的两种不同工况进行数值模拟分析,对比边坡加固和不加固时位移、塑性区及剪应变增量的差别。监测数据显示,多点位移计数值和锚杆应力也随之台阶的开挖逐渐增大,开挖完成后数值稳定。数值模拟结果表明边坡在开挖后在坡脚处的位移和应力值都较大,施工中应及时的对坡脚进行加固。通过监测数据和数值模拟结果进行比较,说明模拟是可靠的。研究表明边坡处于稳定状态,能为以后类似的工程提供借鉴和指导作用。
In order to evaluate the stability of the water intake slope of Zhexi hydropower station, first, we make evaluation based on actual monitoring data, then we make numerical simulation analysis using the finite difference method about the two different working conditions when the typical profile of the slope is in excavation, and to find the difference of the displacement, the plastic zone and the shear strain increment when the slope is reinforced or not . The monitoring data show that the numerical of multi-displacement meter and anchor rod stress are gradually increased with the slope excavation, now the numerical tends to be smooth and without mutation; numerical simulation results show that the displacement and stress value of the slope toe is larger after the slope excavation, so we should reinforce the slope toe timely in construction . Through the eomparation between the monitoring data and the numerical simula- tion results, which shows that the simulation is reliable. Research shows that the slope is in a steady state, and can provide reference and guidance for similar project in fuhure.
出处
《地下空间与工程学报》
CSCD
北大核心
2014年第1期239-246,共8页
Chinese Journal of Underground Space and Engineering
基金
湖南省自然科学基金面上项目(09JJ3126)
