【摘要】 对莲黄隧道爆破振动进行了现场测试和分析,测试研究表明质点振动速度峰值与比例药量间的关系符合萨氏公式,但不同距离的衰减指数与系数有较大差别。质点振动主振频率主要集中在低频段,不同距离的振动速度主频呈现出不同分布规律,近距离主频主要分布在低频段,远距离振动速度主振频率集中在小范围低频段。更多还原

【Abstract】 The blasting vibration tests of Lian-Huang tunnel were carried out and the test results were analyzed in this paper.The test results show that the Sadaovsk formula could well describe the relationship between the vibrating particle’s maximum velocity and blasting powder ratio,but the parameters of this formula for the long blasting distance were different from those for short blasting distance.The blasting wave’s main frequency was the frequency with low frequency ratio,and the main frequency distribution was different at the different blasting distance.更多还原