Liquefiable foundation device for micro-nano bubble processing and operation method

Abstract

The invention discloses a liquefiable foundation device for micro-nano bubble processing and an operation method. In terms of a liquefiable sand layer in a foundation, a mixture of micro-nano bubbles and water is injected through a micro-nano gas-liquid mixture generator, a compressor, an air guide pipe, a hollow drilling pipe, a gas sprayer and the like, the micro-nano bubbles can stay in soil for a long time, the saturation is reduced, shearing strength of the soil is enhanced, and accordingly liquefaction resistance of the liquefiable sand layer is remarkably improved. When the liquefiable sand layer bears a vibration load, gas left in the soil can serve as a buffering agent and effectively buffer the tendency that pore water pressure rises, and accordingly the liquefaction resistance of the foundation is improved.

Description

technical field

[0001] The invention relates to a liquefiable foundation treatment device and method, in particular to an operation method for reinforcing a liquefiable foundation with micro-nano bubbles. Background technique

[0002] my country is an earthquake-prone country, and it is also the country with the most serious earthquake disasters in the world. Earthquakes often threaten people's property and life safety. Since 1988, our country has entered a new period of seismic activity, and the frequency of earthquakes has increased significantly, which constitutes a potential threat that cannot be ignored for the safety of the infrastructure under construction and existing in our country. Generally speaking, there are two main forms of building damage caused by earthquakes: foundation failure and vibration damage. In the distribution area of ​​saturated sandy soil foundation, foundation liquefaction is the main form of foundation failure and the main cause of building dam...

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