饱和粉细砂基密实中爆破漏斗试验与分析

Explosion Funnel Concerning Densification in Water-Saturated Sand Ground

爆破漏斗试验是饱和粉细砂基密实的重要前期试验。通过爆破漏斗试验,可以确定饱和砂基的变形能量系数E,进而确定在一定埋深下最大内部装药量。在饱和粉细砂层中选取场地进行单药包爆破漏斗试验,结果表明,E越大,单个药包埋置深度越大,爆破漏斗深度越大,漏斗半径越小。在不形成爆破漏斗,无能量溢出时,砂层吸收的能量越多,砂基密实效果越好。越接近临界埋深,药包越接近于最大内部装药,越有利于砂层密实。

The test of explosion funnel is an important first-phase experiment of densification of water-saturated sand ground. Decision can be made to confirm the distortion energy modulus E of water-saturated sand ground, and to bury the maximum internal charge in certain depth. Choosing single charge in water-saturated sand ground , the results of explosion funnel tests indicate that when E enhanced, the depth of single explosive bag added, the depth of funnel increases, and the radius of funnel reduces. Without explosive funnel and energy o- verflow, when more energy is absorbed by sand, more effect of densification comes. When nearer to critical point depth, and closer to the max internal charge, more benificial it is to the densification of sand ground.