深基坑爆破的安全监控与数值模拟
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摘要
在建基坑工程中,场坪爆破施工控制的目标是确保基坑围护结构及其相邻环境的安全。根据基坑安全要求,结合爆破安全规范所确定的相邻环境安全控制目标,通过爆破方案的选定及其孔网参数的设计,分析拟定了基坑围护结构振动安全标准为7cm/s。通过数值计算与监测方案设计,实现了控制爆破振动、飞石等的危害。爆破施工监测结果表明,爆破方案设计所拟定爆破施工及其控制方法满足了规范的控制要求。
In foundation pit blasting,ground leveling construction work was controlled to guarantee safety of the pit support structure and its adjacent circumstance.And therefore based on the pit constructing safety requirements,combined with the control target of its adjacent circumstance defined by blasting safety specifications,pit support structure was analyzed and defined 7 cm/s as its vibration safety standard with the method of blasting scheme comparison and parameter design of blasting drill.The design of monitoring program and numerical simulation was made to control the danger of explosive vibration and fly rocks.The results stated that blasting construction and its control method satisfied the control requirements of blasting safety specifications.
In foundation pit blasting,ground leveling construction work was controlled to guarantee safety of the pit support structure and its adjacent circumstance.And therefore based on the pit constructing safety requirements,combined with the control target of its adjacent circumstance defined by blasting safety specifications,pit support structure was analyzed and defined 7 cm/s as its vibration safety standard with the method of blasting scheme comparison and parameter design of blasting drill.The design of monitoring program and numerical simulation was made to control the danger of explosive vibration and fly rocks.The results stated that blasting construction and its control method satisfied the control requirements of blasting safety specifications.
引文
[1]国家标准局.爆破安全规程(GB6722-2003)[S],北京:中国标准出版社,2003.
[2]刘殿中.工程爆破实用手册[M].北京,冶金工业出版社,1999.
[3]孙长兵,崔建平.深圳宝安区场坪爆破工程设计[J].爆破,2005,22(4):59-61.
[4]林苗苗,余德运.高速公路路堑边坡预裂爆破参数选择[J].爆破,2008,25(1):32-33.
[5]方向,高振儒,龙源,等.减震沟对爆破震动减震效果的实验研究[J].工程爆破,2002,8(4):20-23.
[6]焦永斌.爆破地震安全评定标准初探[J].爆破,1995,12(3):45-47.
[7]唐春梅,丁亚伦,王建宙.爆破地震动安全判据的初步探讨[J].有色金属,2001,53(1):1-4.
[8]曹孝君,张继春,吕和林.隧道掘进爆破引起地表震动的数值模拟与现场监测分析[J].中国公路学报,2007,20(2):87-91.
[9]刘红岩,王新生.地表垂直爆破震动速度的数值计算[J].爆炸与冲击,2008,28(3):265-270.
[10]姜鹏飞,唐德高,龙源.不耦合装药爆破对硬岩应力场影响的数值分析[J].岩土力学,2009,30(1):275-279.
[11]刘春林,张耿城,欧礼康.复杂环境下的深基坑钻爆实践[J].工程爆破,2006,12(4):64-66.
[2]刘殿中.工程爆破实用手册[M].北京,冶金工业出版社,1999.
[3]孙长兵,崔建平.深圳宝安区场坪爆破工程设计[J].爆破,2005,22(4):59-61.
[4]林苗苗,余德运.高速公路路堑边坡预裂爆破参数选择[J].爆破,2008,25(1):32-33.
[5]方向,高振儒,龙源,等.减震沟对爆破震动减震效果的实验研究[J].工程爆破,2002,8(4):20-23.
[6]焦永斌.爆破地震安全评定标准初探[J].爆破,1995,12(3):45-47.
[7]唐春梅,丁亚伦,王建宙.爆破地震动安全判据的初步探讨[J].有色金属,2001,53(1):1-4.
[8]曹孝君,张继春,吕和林.隧道掘进爆破引起地表震动的数值模拟与现场监测分析[J].中国公路学报,2007,20(2):87-91.
[9]刘红岩,王新生.地表垂直爆破震动速度的数值计算[J].爆炸与冲击,2008,28(3):265-270.
[10]姜鹏飞,唐德高,龙源.不耦合装药爆破对硬岩应力场影响的数值分析[J].岩土力学,2009,30(1):275-279.
[11]刘春林,张耿城,欧礼康.复杂环境下的深基坑钻爆实践[J].工程爆破,2006,12(4):64-66.
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