Ultra-low water level dynamic compaction system and method

Abstract

The invention discloses an ultra-low water level dynamic compaction system. The ultra-low water level dynamic compaction system comprises ultra-low water level dewatering pressurization pipes, a gas-liquid separation tank and a vacuum main machine, wherein a plurality of formed holes are formed in the ground of a reinforced soil body, the ultra-low water level dewatering pressurization pipes are inserted into the formed holes, the tops of the ultra-low water level dewatering pressurization pipes are connected to the gas-liquid separation tank through pipelines, the gas-liquid separation tank communicates with the vacuum main machine, a plurality of dynamic compaction machines are further arranged on the ground, and the invention further discloses an ultra-low water level dynamic compaction method. According to the ultra-low water level dynamic compaction system and method, vacuum negative pressure can be conducted to the bottom of the ultra-low water level dewatering pressurizing pipes through the ultra-low water level dewatering pressurizing pipes, water enters the ultra-low water level dewatering pressurizing pipes through the bottom, ultra-low water level dewatering is achieved, then ultra-low water level dynamic compaction can be achieved through dynamic compaction of the dynamic compaction machines, settlement after construction is small, and the building strength is high.

Description

technical field [0001] The invention relates to the field of soft soil foundation treatment, in particular to an ultra-low water level dynamic compaction system and method. Background technique [0002] In the field of soft soil foundation treatment technology, dynamic compaction technology has been widely used in foundation reinforcement projects such as highways, railways, airports, and port reclamation. During the construction process, the rammer is hoisted high, and then the rammer is released to rapidly increase the bearing capacity and compression modulus of the foundation. When the rammer falls from a high altitude, it will have a greater impact on the soil, and the soil will quickly generate high excess pore water pressure, and the water level will also rise rapidly, which will hinder the next ramming. If the soil is not dense, it will cause The post-construction settlement is large and the building strength is low. [0003] In the prior art, the downcomer is wrapp...

AI Technical Summary

Problems solved by technology

When the rammer falls from a high altitude, it will have a greater impact on the soil, and the soil will quickly generate high excess pore water pressure, and the water level will also rise rapidly, which will hinder the next ramming. If the soil is not dense, it will cause Large post-construction settlement and low building strength

[0003] In the prior art, the downcomer is wrapped with a layer of filter cloth, the side wall of the downcomer is perforated, the top of the downcomer is connected to the gas-liquid separation tank and the vacuum host, and the water penetrates the filter cloth into the downcomer and is pumped away. Due to the opening of the side wall of the downcomer, the internal vacuum negative pressure is transmitted from top to bottom and decreases gradually, the seepage water at the bottom of the downcomer cannot be pumped out, and the water level cannot be lowered

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