天然气管道沟槽石方爆破开挖技术研究
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摘要
结合西气东输工程聊城至泰安天然气输气管道沟开挖工程的特点,探讨了沟槽石方爆破的设计原则和爆破施工方案。通过选择合适的炮孔布置方式及参数、分段装药结构和起爆顺序,提出了沟槽微差爆破技术以及减小爆破震动和飞石的安全措施,保证了通讯光缆和周围设施的安全,取得了良好的爆破效果,为工程的顺利进行创造了有利条件。
According to the characteristic of Liaocheng-Tai'an natural gas duct excavation engineering of West-East natural gas transmission project,the suitable pattern of hole disposal,the blasting parameters,the structure of stage charge,the reasonable firing method and the detonation sequence of the blasting excavation are discussed.The principle of ditching blasting and the scheme of blasting construction are summarized based on the above analysis.The techniques of millisecond blasting and safety measures of reducing vibration and controlling blasting flying rock are put forward.So the security of communications cables and the surrounding facilities are guaranteed;and ideal achievement is obtained.Favorable conditions are created for the smooth progress of West-East natural gas transmission project.
According to the characteristic of Liaocheng-Tai'an natural gas duct excavation engineering of West-East natural gas transmission project,the suitable pattern of hole disposal,the blasting parameters,the structure of stage charge,the reasonable firing method and the detonation sequence of the blasting excavation are discussed.The principle of ditching blasting and the scheme of blasting construction are summarized based on the above analysis.The techniques of millisecond blasting and safety measures of reducing vibration and controlling blasting flying rock are put forward.So the security of communications cables and the surrounding facilities are guaranteed;and ideal achievement is obtained.Favorable conditions are created for the smooth progress of West-East natural gas transmission project.
引文
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[3] 高文学,金乾坤,杨军,等.沟槽深孔微差爆破的工程实践和数值模拟[J].爆炸与冲击,1999,19(2) :164-168．
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[5] 徐成光.复杂环境和复杂地质条件下的沟槽控制爆破[J].工程爆破,1996,2(1) :47-51．
[6] GB6722-2003,爆破安全规程[S].
[7] 言志信,吴德伦,王漪,等.地震效应及安全研究[J].岩土力学,2002,23(2) :201-203．
[2] 高文学,刘运通,万元林,等.沟槽石方基础施工技术研究[J].岩石力学与工程学报,2005,24(S1) :4 872-4 876．
[3] 高文学,金乾坤,杨军,等.沟槽深孔微差爆破的工程实践和数值模拟[J].爆炸与冲击,1999,19(2) :164-168．
[4] 张宪堂.节理裂隙岩体爆破效果预测研究[硕士学位论文 D].泰安:山东科技大学,2000．
[5] 徐成光.复杂环境和复杂地质条件下的沟槽控制爆破[J].工程爆破,1996,2(1) :47-51．
[6] GB6722-2003,爆破安全规程[S].
[7] 言志信,吴德伦,王漪,等.地震效应及安全研究[J].岩土力学,2002,23(2) :201-203．
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