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Papua New Guinea SJW-100 High-pressure Jet Grouting

High-pressure jet grouting is an advanced ground improvement technique used in construction and geotechnical engineering projects. This method involves injecting a high-velocity jet of cementitious grout into the soil to create a columnar or structural element. Jet grouting offers several advantages, including increased soil strength, improved stability, and enhanced load-bearing capacity.

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Papua New GuineaRotary jet drilling rig

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Product Description

High-pressure jet grouting utilizes specialized equipment that can deliver grout at high velocities and pressures. The grout is injected into the ground through a monitor nozzle, which is rotated and withdrawn simultaneously, forming a cylindrical column of treated soil. This process allows for precise control over the grout placement, ensuring consistent and uniform treatment of the soil mass.

The jet grouting technique is particularly effective in cohesive soils, such as clay and silt, where it can improve their strength and stiffness. By breaking up and mixing the soil with the injected grout, jet grouting creates a composite material that has increased shear strength and reduced compressibility. This makes it suitable for stabilizing weak or loose soils, enhancing slope stability, and preventing foundation settlement.

High-pressure jet grouting is also widely used for creating cutoff walls and barriers in various geotechnical applications. By injecting grout in a closely spaced pattern, a continuous impermeable barrier can be formed, preventing the flow of groundwater or contaminants. This technique is valuable in environmental remediation projects, underground construction, and retaining wall installations.

Main technique speciications:

Module	Specifications	SJW-100
Construction	Single pass depth	30m
	Drill pipe diameter	φ73~φ127mm
	Drilling angle	90°
Rotary head	Max torque	10000N·m
	Max speed	100r/min
	Lifting force	72kN
	Feed force	34kN
Mast	Stroke	4000mm
Mast	Total length	9000mm
Towel	Total height	24m(+3m)option+3m
Winch	Main winch	20kN
Winch	Auxiliary winch	5kN
Drill	Power(electric)	55+15kW
	Transportation dimensions	970021002800mm
	Construction dimensions	6300410033800mm
	Weight	12000kg
Intellgent module	Standardized automatic driling and rotary spraying;optional parameter monitor