In deep foundation reinforcement, cut-off wall construction, and geological hazard control, the triple-fluid jet grouting rotary drilling rig has become an indispensable core equipment in modern geotechnical engineering due to its unique technical advantages. This article details the technical features and typical applications of the triple-fluid jet grouting rotary drilling rig, helping you fully understand the value of this efficient construction method.

I. Technical Features of the Triple-Fluid Jet Grouting Rotary Drilling Rig

1. Simultaneous Triple-Medium Injection

The triple-fluid jet grouting rotary drilling rig utilizes an independent three-channel system for water, air, and grout. High-pressure water (30-50 MPa) cuts through soil, compressed air (0.7-1.0 MPa) expands fissures, and cement slurry (20-30 MPa) fills and solidifies, forming a uniform and dense consolidated mass.

2. Ultra-Deep Treatment Capability

Compared to single- or double-fluid methods, the triple-fluid jet grouting rotary drilling rig can achieve construction depths exceeding 60 meters with pile diameters ranging from 1.2 to 2.5 meters, making it ideal for high-rise building foundations and subway tunnel reinforcement.

3. Intelligent Parameter Control

Modern triple-fluid jet grouting rotary drilling rigs are equipped with PLC control systems that monitor real-time parameters such as injection pressure, lifting speed, and rotation frequency, ensuring pile quality complies with ISO 14688-2 standards.

4. Eco-Friendly and Energy-Efficient Design

With slurry recovery systems and noise control modules, the triple-fluid jet grouting rotary drilling rig maintains dust concentrations below 5 mg/m³ and noise levels under 75 dB, meeting green construction requirements.

II. Typical Applications of the Triple-Fluid Jet Grouting Rotary Drilling Rig

1. Deep Excavation Waterproof Curtains

In water-rich sand layers or soft clay strata, the triple-fluid jet grouting rotary drilling rig can construct continuous cut-off walls with permeability coefficients as low as 10⁻⁶ cm/s, successfully applied in projects like the Shanghai Tower's ultra-deep foundation pit.

2. Existing Building Foundation Reinforcement

Using inclined jet grouting, the triple-fluid jet grouting rotary drilling rig can strengthen aging building foundations without disturbing the superstructure, increasing bearing capacity by up to 300%.

3. Geological Hazard Control

For landslide anchoring and mine goaf filling, the triple-fluid jet grouting rotary drilling rig creates a three-dimensional reinforcement network with shear strength exceeding 1.5 MPa.

4. Problematic Soil Improvement

In collapsible loess or expansive soil areas, the triple-fluid jet grouting rotary drilling rig significantly enhances soil properties, increasing the California Bearing Ratio (CBR) by 4-8 times.

III. Core Benefits of Choosing the Triple-Fluid Jet Grouting Rotary Drilling Rig

Cost-Effectiveness: 25%-40% lower overall costs compared to traditional bored piles

Reliability: Pile quality tested to ASTM D5778 standards

Adaptability: Suitable for soil layers with N-values ranging from 5 to 50

Conclusion

As the "Swiss Army knife" of ground improvement, the triple-fluid jet grouting rotary drilling rig is the preferred choice for geotechnical engineers due to its versatility and superior pile quality. Whether for urban renewal or major infrastructure projects, choosing a professional-grade triple-fluid jet grouting rotary drilling rig ensures both construction efficiency and engineering excellence!