爆破振动对边坡稳定性及建筑物开裂影响分析  

Influence Analysis of Blasting Vibration on Slope Stability and Building Cracking

作　　者：唐峰[1] 韦子俊 TANG Feng;WEI Zijun(Guangxi Land and Resources Planning and Design Group Co.Ltd.Nanning 530029, China;China Energy Engineering Group Guangxi Electric Power Design Institute Co.Ltd.Nanning,530007)

机构地区：[1]广西国土资源规划设计集团有限公司,广西南宁530029 [2]中国能源建设集团广西电力设计研究院有限公司,广西南宁530007

出　　处：《红水河》2024年第2期123-127,共5页Hongshui River

摘　　要：八渡村移民安置点采用爆破方式进行场地平整,弄中屯房屋出现大量裂缝,分析爆破振动对弄中屯边坡稳定性和建筑物开裂影响非常必要。笔者基于实际工程,采取理论公式推导在爆破工况下边坡稳定性计算方法;运用大型有限元软件ANSYS模拟爆破振动,推导出建筑物安全允许振动速度的炸药量。结果表明:当移民安置点齐爆炸药量为350kg,边坡受到爆破振动力相当于地震烈度为7度时产生的地震水平力;移民安置点齐爆炸药量大于建筑物安全允许振动速度的炸药量时,房屋结构性裂缝由爆破引起。The resettlement site of Badu Village is leveled by blasting and a large number of cracks appear in the houses in Nongzhong Village.It is necessary to analyze the influence of blasting vibration on the stability of the slope and the cracking of the buildings in Nongzhong Village.Based on the actual project the authors adopt the theoretical formula to derive the calculation method of slope stability under blasting condition The large-scale finite element software ANSYS is used to simulate the blasting vibration and the explosive quantity of the allowable vibration velocity of the building safety is deduced.The results show that when the explosive quantity of the resettlement site is 350 kg the blasting vibration force on the slope is equivalent to the seismic horizontal force generated when the seismic intensity is 7 degrees When the explosive quantity of the resettlement site is greater than the allowable vibration velocity of the building safety the structural cracks of the building are caused by blasting.

关 键 词：爆破振动 ANSYS软件 边坡稳定性 建筑物开裂 振动速度 炸药量 

分 类 号：TU751.9[建筑科学—建筑技术科学]