'Three-step three-layer method' landfill filling construction process of dimension stone high-fill dynamic compaction treatment foundation

Abstract

The invention belongs to the technical field of construction foundation treatment and particularly relates to a 'three-step three-layer method' landfill filling construction process of a dimension stone high-fill dynamic compaction treatment foundation, and the process can be used for solving the problems that the existing dynamic compaction packing layer throwing padding method can not meet the requirements on the uniformity, compactness and stability of the dimension stone high-fill dynamic compaction foundation and therefore causes non-uniform settlement or collapse. The process comprises the following steps of: dividing the foundation into three filling sublayers, using a reverse method to fill a first sublayer, and forming natural material piles which are intersected; using a forward method to fill a second sublayer on the natural material pile surface of the first sublayer, unloading paddings to recessions among the material piles of the first sublayer and coarsely flatting; and filling a third sublayer in a reverse manner on the stratification plane of the second sublayer after coarse flatting, and discharging and leveling so as to form a dynamic compaction packing layer. The process provided by the invention has the beneficial effects of effectively solving the problem of non-uniform settlement of the foundation due to padding isolation, poor gradation and uncompacted grains easily caused when the throwing padding method is adopted for a dimension stone high-fill dynamic compaction foundation filling body.

Description

technical field [0001] The invention belongs to the technical field of building foundation treatment, and in particular relates to a "three-step, three-layer method" landfilling construction process for treating foundations with block stone high fill and dynamic compaction. Background technique [0002] With the expansion of my country's capital construction scale and the strengthening of farmland protection policies, construction land is becoming increasingly scarce. In recent years, a large number of industrial plants such as airports, power plants, ports, and storage yards have adopted artificial methods such as opening mountains to fill ditches, opening mountains and reclamating seas, etc. to solve construction land; Block stones are used for filling, and the filling body is formed through dynamic compaction. At present, most of the filling bodies of block stone high-fill foundations are treated by backfilling stone materials in layers and dynamic compaction in layers. ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem in the prior art that the dynamic compaction filling layer throwing packing method cannot satisfy the uniformity, compactness and stability of the dynamic compaction foundation of the high block rock filling, resulting in uneven settlement or subsidence, a high block block high filling is proposed. "Three-step and three-layer method" for foundation treatment by dynamic compaction Landfill construction technology