Jet-Grouting techniques have been developed for soil consolidation and waterproofing.
Soil is directly mixed with cement in site to treat sand and clay formations in a homogeneous, continuous and non-polluting way.
GM-5 jet grouting drilling rig is crawler full hydraulic engineering drilling machine. Main data as the following:
|
Max torque |
6500N.m |
|
Rotation speed of top-drive head |
0～150r/min |
|
Stroke of top-drive head |
3400mm |
|
Rated pull force of top-drive head |
50KN |
|
Rated thrust force of top-drive head |
20KN |
|
Rod dia. |
42mm;50mm;73mm;89mm |
|
Fast lifting and thrust speed of top-drive head |
(jetting) 0-1.5m/min |
|
Lifting and dropping speed of top-drive head |
0-45m/min |
|
Power unit |
55+18.5+2.2 kW |
|
Overall dimension |
Working(mm): 3750*2450*5450 Transportation(mm): 5450*2300*2250 |
|
Weight |
6500kg |
|
Main pump pressure |
20MPa |
|
Auxiliary pump pressure |
20MPa |
|
Column slipping stroke |
900mm |
|
Climbing capacity |
20° |
|
Moving speed |
0.8 km/h |
GM-5 is the most hot selling jet grouting drilling machine in China. .Top-drive head driven by hydraulic, stepless speed regulation, high efficiency drilling rig with DTH equipment ensure it is powerful, stable and reliable.
The Jet-grouting techniques are classified depending on the number of fluids injected during treatment:
- Mono-fluid system: cement grout is used as breaking-up and consolidation agent;
- Bi-fluid system: cement grout and air are used as breaking-up and consolidation agent ;
- Triple-fluid system: water and air are used as breaking-up agents, while the cement grout is used as consolidation agent.
All Jet-Grouting techniques include a drilling phase followed by withdrawal and rotation at preset values, with simultaneous injection of fluids at high pressure.
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