药包群同时起爆地震场中振动峰值研究及其在边坡开挖中的应用

Study on vibration peak values of charges simultaneous blasting seismic field and its application of cutting in slopes

1.
School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031 Sichuan, China;
2.
Environment and Architecture Faculty, Jiangxi University of Technology, Ganzhou 341000, Jiangxi, China

摘要: 基于粘性岩石中爆破地震的波动能流衰减规律,探讨了药包群同时起爆产生的地震场中波动能流主导方向及其在同方向上振动峰值与爆心距的关系,获得了药包群同时起爆地震场中振动峰值分布规律,确立了药包群包络面与边坡面的夹角和边坡地震强度的关系，依此关系,对攀西高速公路边坡爆破开挖重新设计,改变药包群包络面倾角,降低了边坡震动强度,确保了边坡稳定性。
- 爆炸力学 /
- 爆破地震波 /
- 波动能流 /
- 药包群同时起爆 /
- 边坡稳定 /
- 包络面
Abstract: Based on the principle of blasting seismic waves energy disperse in clay stone, the predominant direction of waves energy flowing and the relation between vibrations peek values and the distance from blasting sources, are researched, so that the rule of vibrations peak values strike is drawn, furthermore, the relation between slopes vibration intensity, and the angle between the slop plain and the envelope in which explosive charges exist, is obtained. By the regulation, blasting cutting in slop of Pan-Xi highway are redesigned, adjusting the dip angle of the envelope in which the explosives lie, to restraint the seismic vibration of the slope and to remain stableness of the slop.
- mechanics of explosion /
- blasting seismic wave /
- wave energy flow /
- charges simultaneous blasting /
- slope stability /
- envelope