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爆炸固结法是软土地基处理的新方法。在宁启铁路试验段现场爆炸试验的基础上,研究软土地基经过爆炸后的变形特性。在地质情况接近情况下,对比爆炸固结法与塑料排水板加堆载预压法处理的结果表明,爆炸固结法加快了土体前期固结速率和地基沉降速率,有利于缩短施工工期,适用于工期紧的工程,但同时土体也伴随着较大侧向位移;爆炸固结法相对排水固结法,总沉降量有所增加,最终侧移总量基本一致,工后沉降和可比造价较接近,在工期允许情况下工后沉降均能满足设计要求。
Explosion consolidation method is a new method of soft soil foundation treatment. Based on the on-the-spot blasting test in Ningqi railway test section, the deformation characteristics of soft ground after blasting are studied. When the geological conditions are approaching, the results of comparison between blast consolidation method and plastic drainage board plus surcharge preloading method show that blasting consolidation method can accelerate the consolidation rate of early soil and settlement rate of foundation, shorten the construction period, It is suitable for engineering with tight schedule, but also with large lateral displacements of soil. Compared with drainage and consolidation method of explosion consolidation method, the total settlement is increased, and the total amount of final lateral displacement is basically the same. The post-construction settlement and comparable The cost is relatively close, and the construction subsidence can meet the design requirements under the condition that the construction period allows.