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地下厂房洞室具有埋深大、高地应力、大跨度、高边墙、相邻洞室纵横交错等特点,因此在开挖施工过程中,需重点研究开挖施工过程中爆破震动对岩壁吊车梁混凝土影响的关键技术问题。以雅砻江官地水电站压力管道开挖施工中爆破振动对岩壁吊车梁浇筑混凝土影响为例,通过现场实际试验及振动测试技术和回归分析计算,研究爆破地震波传播规律,据此制定在高地应力区、大跨度地下厂房洞室工程开挖施工的爆破振动控制方案,并应用于工程实践。
Underground caverns have the characteristics of large buried depth, high ground stress, long-span, high-side walls and criss-crossing of adjacent caverns. Therefore, during the excavation process, it is necessary to study the influence of blasting vibration on the rock-wall crane The Key Technical Problems Influencing Beam Concrete. Taking the impact of blasting vibration on concrete erected by crane beam on rock wall during excavation of pressure pipe of Guandi Hydropower Station in Yalong River as an example, the propagation law of blasting seismic wave was studied through field test, vibration test technique and regression analysis. Based on this, Stress area, long-span underground powerhouse cavern excavation blasting vibration control program and applied to engineering practice.