Analysis of influence of blasting excavation of new tunnel on stability of roadbed slope
To analyze the impact of the tunnel blasting excavation on the stability of adjacent subgrade slope,with the three gorges hub MaoPing port railway li ping tunnel parallel three gorges dam high-speed subgrade slope engineering,using the method of theoretical calculation and midas GTS NX numerical simulation,studied the tunnel blasting excavation of the influence of adjacent highway subgrade slope stability.The research results show that the peak of slope velocity calculated by empirical formulais 1.06～2.66 cm/s,and thepeak of slopevelocity calculated by numerical simulation is 0.882 cm/s,less than 3 cm/s,and the safety factor of the subgrade slope is greater than 1.35.Therefore,the impact of the new Shiliping tunnel on the subgrade slope of the dam is controllable.Put forward the evaluation provisions of safety guarantee measures for road-related engineering,and the research results can provide reference for the design and safety technology evaluation of road-related engineering similar to highway and railway parallel.
万方数据
维普
