Method for processing soft foundation of hydraulic structure

Abstract

The invention relates to a method for processing a soft foundation of a hydraulic structure. The invention aims to provide the method for processing the soft foundation of the hydraulic structure and utilize the excellent engineering characteristics of dry lean gravel materials to effectively increase the reliability of the hydraulic structure during a construction period and a running period, increase the construction efficiency and reduce the construction cost. According to the technical scheme provided by the invention, the method for processing the soft foundation of the hydraulic structure comprises the following steps: a) digging a foundation: digging out a shallowly buried soft stratum in a direct bearing stratum of the hydraulic structure and also digging out continuously distributed soft stratums with the burying depth of about 20m in the foundation; b) backfilling the foundation: using the dry lean gravel materials for backfilling the foundation and adopting a rock-fill dam construction technique for grinding, wherein the dry lean gravel materials are formed by adding a certain quantity of cement and additives into natural gravel materials and then mixing by using a simple device. The method provided by the invention is fit for the similar projects, such as the processing for the soft foundation of the hydraulic structure.

Description

technical field [0001] The invention relates to a method for treating the soft foundation of a hydraulic structure, which is suitable for similar projects such as the soft foundation treatment of the hydraulic structure. Background technique [0002] The foundation design and construction of hydraulic buildings have high requirements for the stability and safety of the foundation of the building. During construction, soft soil foundations are often encountered. Due to the poor settlement and settlement of the foundation or the stability and anti-seepage of the foundation Insufficient stability will directly affect the normal operation and safety of the building, and even cause serious engineering accidents. [0003] At present, in the traditional soft foundation treatment of hydraulic structures, excavation of shallow buried strata with low bearing capacity and poor liquefaction resistance is often used, and low-grade concrete is used for replacement treatment, or direct con...

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Problems solved by technology

[0002] The foundation design and construction of hydraulic buildings have high requirements for the stability and safety of the foundation of the building. During construction, soft soil foundations are often encountered. Due to the poor settlement and settlement of the foundation or the stability and anti-seepage of the foundation Insufficient stability will directly affect the normal operation and safety of the building, and even cause serious engineering accidents

[0003] At present, in the traditional soft foundation treatment of hydraulic structures, excavation of shallow buried strata with low bearing capacity and poor liquefaction resistance is often used, and low-grade concrete is used for replacement treatment, or direct consolidation grouting, high-pressure suspension injection Slurry, vibrating gravel piles and other methods are used to strengthen the original foundation, but the above methods not only require huge project investment, but also have relatively large restrictions on the construction schedule

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