三峡工程土石围堰安全爆破控制标准研究  

Reasearch on the Control Standards of Sarety Blasting for Three Gorges Project's Soil-rock Cofferdam

作　　者：吴新霞[1] 朱传统[1] 

机构地区：[1]长江科学院,武汉430010

出　　处：《爆破器材》1997年第6期28-29,共2页Explosive Materials

摘　　要：文章叙述了砂土液化机理及影响砂土液化的因素，指出以应力波的传播来计算土体中的动应力，并给出由实测质点振速值来计算土体中的某点动应力的计算公式．综述了大量地震及爆破荷载作用下砂土液化及非液化振动测试资料，提出二期土石围堰饱和砂土和非饱和砂土的安全爆破控制指标．The mechanism and the affecting factors of soil-sand liquefying were described in this paper. It was pointed out that the dynamic stress in soil-sand should be calculated by the propagation of stress wave. The calculation formula of soil-sand dynamic stress was also put for-ward by the vibration velocity of monitor. According to a great number of vibration monitoring in-formation of soil-sand liquefying and non-liquefy, the control standards of safety blasting of satu-rated or unsaturated soil-sand were put forward for Three Gorges Project's soil-rock cofferdam.

关 键 词：三峡工程 土石围堰 爆破 安全 控制标准 

分 类 号：TV551.31[水利工程—水利水电工程] TV542