珠海LNG项目陆域形成土石方工程爆破有害效应控制

Control of the Adverse Effects of the Blasting of Land Site Forming Works of Zhuhai LNG Project

经过对工程及爆破区域周边环境深入了解,比选爆破方法,通过现场爆破试验及施工期间振动监测,调整优化爆破参数,合理安排工作面,掌握最小抵抗线部位、方向及局部岩石薄弱状况,严格控制最大一段药量,有效控制了个别飞散物、地震等爆破有害效应,同时又满足了工程进度、质量、成本等方面要求。

Through understanding the engineering and blasting circumstances around and comparing blasting method, the paper,on the basis of spot blasting test and vibration monitoring during construction, discusses the optimization of blasting parameter, reasonable arrangement of work place,controlling of the position and direction of minimum holdout l.ine and weak condition in partial rock and the strict controlling of maximum charge amount per delay interval, through which the adverse effects such as individual flying rock and blast vibration etc. are effectively controlled and the requirements on project,quantity and cost etc. are met at the same time.