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中文摘要：
目的为深入研究淤泥、抛石和炸药之间的作用机理,优化爆炸法软基处理中的主要参数.方法采用基于多物质欧拉法的爆炸流体动力学数值模拟技术对爆炸法软基处理问题进行了分析,并采用钻孔和地质雷达等现场试验方法进行了验证.结果爆炸冲击波在淤泥、抛石、非黏性土层中的传播特性存在明显差异;药包埋深应在淤泥层底部以上1.0～2.0 m,并以用药量和药包埋深为基础确定布药距离;下部非黏性土层密度增加了20%以上.结论爆炸法处理陆上软基的作用机理是排开淤泥形成空腔,并挤压抛石形成较陡断面进大量挤入爆腔置换淤泥.
英文摘要：
For obtaining mechanics of silt, crushed stone and explosive interaction and optimizing parameters of explosion design for foundation treatment, a numerical study on foundation treatment by explosion is presented by hydrocodes based multi-materials Euler formulation. Drill and geology radar in field test are also be used to verify the effect of foundation treatment. The result shows that diffusion of shock wave in silt, crushed stone and non-cohesive soil is obviously different. Buren depth of charge should be in the range of 1.0 - 2.0 m upside silt layer, and explosion distance should be determined by mass and burden depth of charge. Layer mixed with silt exists in section after explosion, and density of non-cohesive soil increases about 20%. The main effect of explosive lies in pushing out silt and forming crater, and squashing crushed stone to form steep slope and then cramming them into crater, so purpose of exchange silt can be achieved.
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