| After-sales Service: | Online Support,Field Maintenance |
|---|---|
| Warranty: | 1 Year |
| Certification: | CE, RoHS, ISO 9001:2000, ISO 9001:2008 |
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Application
It is used for multi-pipe rotojet construction within the diameter of 142 of drill pipe. It can realize the operating requirements of self-rotation, high and low speed, traveling, rotojet and swing jet.
Introduction
HFDG-150 walking all rotary spray rig is on the basis of the traditional technology of high-pressure rotary jet grouting and adopted a unique porous pipe and the front pressure monitoring devices, realize the hole force in slurry and ground pressure monitoring, and by adjusting the forced pulp quantity to control internal pressure, significantly reduce the disturbance of the surrounding foundation;Its technological characteristics are horizontal, inclined, vertical and arbitrary Angle construction, large pile diameter and good pile quality.
Features
Suitable for multi-pipe rotojet construction within the diameter of 142 drill pipe;It can display mud volume, air volume, ground pressure, rotary speed, lifting speed, lifting distance, stepping distance, swing spray Angle, etc.Printing part: it can print instantaneous mud amount, accumulated mud amount, instantaneous grouting pressure, lifting speed, pressure inside the hole bottom, air pressure, air flow, water pressure of cutting hole and water flow of cutting hole.
| Parameters and Names | HFDG-150B | HFDG-150L |
| Chassis form | Tramp walk | Track 360° rotary walk |
| Pillar form | stationary | 0-90°Put a spray |
| Power head form | Through hole 150 mm hydraulic chuck | Through hole 150 mm hydraulic chuck |
| Power head stroke | 2m | 1.7m |
| Speed | Low speed 0-24r/min High speed 0-48r/min |
Low speed 0-24r/min High speed 0-48r/min |
| Promote force | 10T | 10 T |
| Rotary torque | 12 Kn.m | 14 Kn.m |
| Maximum lifting speed | 4m/min | 6m/min |
| Construction parameter table of DG multi-pipe rotary jet grouting method | |||||
| Number | Content | Parameter | Number | Content | Parameter |
| 1 | Pile diameter | 2300mm | 10 | Pile bottom elevation | -13.5 |
| 2 | Water cement ratio | 1: 1-1.5 | 11 | Cutting water pressure | 0-20Mpa |
| 3 | Mud pressure | 40Mpa | 12 | Control of pile Angle error | ≤1/100 |
| 4 | Mud flow | 90-130L/min | 13 | Interval trip | 25mm |
| 5 | Main air pressure | 0.7-1.05Mpa | 14 | Step lift time | 45s |
| 6 | Main air flow | 1.0-2.0Nm³/min | 15 | Speed | 3-4rpm |
| 7 | Inverted suction pressure | 0-20Mpa | 16 | Pressure in the ground | 1.0.-1.8 coefficient |
| 8 | Reverse suction flow | 0-60L/min | 17 | Cement dosage | 40% |
| 9 | Column length | 15m | 18 | Pile top elevation | 1.5 |
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