High-pressure earth mortar pile squeezing method and system

Abstract

The invention relates to a method and a system for a high-pressure soil-extruding mortar pile. The method comprises the following steps: a drilling rod is driven to reach the designed elevation of the depth of a soil layer by utilizing a drilling machine or a vibrating pile driving machine; grouting materials are compressed into a soil body gradually from the bottom to up; and the drilling rod is lifted at slow speed, so as to form a coherent mortar pile body. The grouting materials quickly bleed after being compressed out by high pressure, so that the fluidity is reduced; the pile body forms spherical stemlike grouting by pushing the prior soil body to displace and then vacate the space; and the added stress in the soil is manually increased to extrude soil bodies between piles, and the pressure of water in gaps of the soil is improved and is discharged, so that the soil between the piles is extruded to be compact. The system for realizing the method is as follows: a compression system of a compression device is a system which has double cylinders, and absorbs and discharges materials continuously. The method has the advantages of the prior treatment (consolidation treatment and compound treatment) technologies; and various information such as the reclaiming pressure and the flow rate (curve) is digitally displayed in time through a PLC, and extrusion and extension of the diameter of the pile are simulated, so that the method is more favorable for constructors to know about the construction state in time to perform accurate control.

Description

technical field [0001] The invention belongs to the field of civil engineering and relates to a composite ground treatment technology. Background technique [0002] 1. Current status of civil engineering composite foundation treatment and settlement control treatment: [0003] There are two main methods of processing: [0004] a. Consolidation method: Use external force to achieve the purpose of consolidation. At present, the main treatment methods include dynamic compaction method, surcharge method, vacuum precipitation method, etc. [0005] b. Composite foundation: Reinforcement is achieved by point-to-surface replacement. At present, the main treatment methods include deep-layer stirring grouting method, rotary jet grouting method, driven pile method, etc. [0006] The advantages and disadvantages of the above two conventional methods are compared: [0007] Consolidation method: [0008] Advantages: low cost (suitable for large area treatment). [0009] Disadvantages...

AI Technical Summary

Problems solved by technology

[0009] Disadvantages: a. High requirements on the environment of the treated site (dynamic compaction has vibration, and precipitation affects the surrounding area);

[0014] Disadvantages: a. The overall cost is relatively high;

Grouting mainly has a large water-cement ratio (equipment limitation), which can only play a filling role, and the actual treatment effect is not very ideal, and the effect is not obvious

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