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同步爆扩法处理高速公路液化土地基,提出了一个可行的新技术,其具有高效、实施工艺简便、经济等显著特点,有良好的工程应用价值和前景。为了获得同步爆扩法处理高速公路液化土地基的实施方法和参数,文章采用模型试验和现场试验相结合的研究方法,研究了爆扩参数及影响因素、爆扩超孔隙水压力变化规律、爆扩排水沉降的规律和爆扩地面震动规律,提出了同步爆扩法处理高速公路液化土地基的关键技术参数和实施方法。试验结果表明:应用该技术方法处理后的高速公路液化土地基土体物理力学特性提高,液化消失。
Simultaneous Explosion Method is used to deal with highway liquefiable soil foundation. A feasible new technology is proposed. It has the characteristics of high efficiency, simple process and economy. It has good engineering application value and prospect. In order to obtain the method and parameter of simultaneous explosion expansion method for liquefiable soil foundation treatment of expressway, this paper studied the variation rules of explosion expansion parameters and influencing factors, explosion and excess pore water pressure by using the research methods of model test and field test. The law of expansion and drainage of water and the ground vibration law of explosive expansion, the key technical parameters and implementation methods for simultaneous treatment of expressway liquefiable soil foundation by blast explosion are proposed. The test results show that the physical and mechanical properties of the soils treated by this technology are improved and the liquefaction disappears.