爆破挤淤法处理深厚软基的典型试验研究

爆破挤淤技术在水工领域已经得到广泛的应用。漳州人工岛填海工程B标段外护岸大部分为深层软基地段，且软土厚度变化大，设计要求采用抛石爆破挤淤法处理软基。根据典型试验段施工及土方平衡分析、钻孔效果检测等，优化调整了爆破设计参数，确保了外护岸堤身的落底宽度与深度，并有效地减少了理坡工程量，是爆破挤淤法用于软土地基上填筑堤坝的成功应用。

Typical Test and Research on Blasting Toe-shooting Method in Deep Soft Subgrade

Blasting toe-shooting technique is widely applied in under-water strneture project. Deep soft suhgrade exists in most parts of external revetment in B-section of Zhangzhou artificial islands reclamation project, and riprapping blasting toe- shooting methods are applied in soft subgrade improvement based on the design criteria. According to typical test construction, earthwork balance analysis and borehole detection and adjusted blasting parameters, the method ensured the expectable bot- tom width and depth of external revetment. At the meantime, the amount of work to trim slopes was reduced. It is a successful application of blasting toe-shooting methods of deep soft subgrade improvement in the design and construction of external revetment.