| Slope stability is a long-term problem of slope engineering,this article in view of the typical soil-rock combination slope structure, based on the general blasting of slope excavation process, and simulates the particle vibration characteristics of soil-rock combination slope structure under the influence of blasting vibration in height direction and horizontal direction. Firstly, this paper introduces the explosive mechanism of rock failure, producing of vibration wave and the category of it, and analyzes the blasting vibration wave propagation characteristics in the medium and its influence on structure, comparing the similarities and differences between blasting vibration wave and natural seismic wave; Secondly, it analyzes the main damage forms of rock slope and soil slope, and at last the possible failure modes of soil-rock combination slope, introducing the dynamic analysis of Sarma method; Finally, using ANSYS/LS-DYNA software to simulate the soil-rock combination slope of blasting, selecting servo hardening model of rock material and foam model of soil, setting up reasonable software analysis options, through single and double hole, double hole millisecond delay blasting simulation, getting the soil-rock combination slope structure response under blasting vibration. |
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