山西建筑
山西建築
산서건축
SHANXI ARCHITECTURE
2012年
23期
85-86
,共2页
预裂爆破%数值模拟%爆破工程
預裂爆破%數值模擬%爆破工程
예렬폭파%수치모의%폭파공정
pre-split blasting%numerical simulation%blasting engineering
运用LS-DYNA3D程序模拟分析了爆炸应力波与预裂缝的相互作用过程中,应力波通过预裂缝的传播过程以及衰减规律,得到了预裂爆破的降震规律,数值计算结果表明,具有足够宽度和深度的预裂缝具有明显的降震效果。
運用LS-DYNA3D程序模擬分析瞭爆炸應力波與預裂縫的相互作用過程中,應力波通過預裂縫的傳播過程以及衰減規律,得到瞭預裂爆破的降震規律,數值計算結果錶明,具有足夠寬度和深度的預裂縫具有明顯的降震效果。
운용LS-DYNA3D정서모의분석료폭작응력파여예렬봉적상호작용과정중,응력파통과예렬봉적전파과정이급쇠감규률,득도료예렬폭파적강진규률,수치계산결과표명,구유족구관도화심도적예렬봉구유명현적강진효과。
The interaction of stress wave of blasting and pre-splitting crack was simulated with LS-DYNA3 D program, the dissemination process and the reduce regulation that the stress wave pass through the pre-splitting crack was analyzed, and the shock-absorption rules of pre-split blasting was found. The result of the numerical calculate implies that the pre-splitting crack with enough width and depth has obvious effect of shockabsorption.
