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近年来,随着水利工程的不断增多,各种软土地基处理措施逐步完善。砂垫层作为主要的软土地基的处理方式,不但能够加深建筑物基础的砌置深度,而且能够有效的提高建筑物荷载能力,使得荷载应力能够通过砂垫层均匀分布在地基的处理中,这同时避免了地基遭到区部的应力破坏形式。砂垫层在使用中渗透性能好,下部受到压缩的时候各种多于水量可以通过砂垫层合理渗出,能够提高地基的固结速度和完整性。本文通过工程实例分析了水利工程坝闸拆除重建工作中的重点,阐述基础换砂工作在其施工的应用。
In recent years, with the continuous increase of water conservancy projects, all kinds of soft soil foundation treatment measures have been gradually improved. As the main soft soil foundation treatment, the sand cushion can not only deepen the masonry depth of the building foundation, but also effectively improve the load capacity of the building, so that the load stress can be evenly distributed in the foundation through the sand cushion layer, This at the same time avoids the area being subjected to stress-disruptive forms of the ground. Sand cushion in use, good permeability, the lower part of the compressed when more than the amount of water can be properly exuded through the sand cushion, can improve the consolidation rate and integrity of the foundation. This paper analyzes the key points of the dam reconstruction project of water conservancy project through engineering examples, and expounds the application of foundation sand removal in its construction.