1. What "2,000 m²" Means in Practice
The area (2,000 m²) is your sprayed surface area, not volume. For equipment sizing you also need:
Design thickness of shotcrete: typically 50–150 mm
Slope geometry: height, steepness, access conditions
Requirements for reinforcement: rock bolts, mesh, fibers
Example:
If design thickness = 100 mm, total volume ≈
2,000 m² × 0.10 m = 200 m³ of shotcrete.
2. Recommended Shotcrete Machine Type
Wet-mix Shotcrete Machine (High Output)
Best for large areas like 2,000 m² because:
Continuous, high-volume spraying
Lower rebound and better quality
Easier control of accelerator dosing
Better for steep and uneven slopes
3. Suggested Machine Capacity Range
| Project Scale | Recommended Pump Output | Boom Reach | Comments |
|---|---|---|---|
| Small slope work | 40–60 m³/h | 10–14 m | Small crawler or truck-mounted |
| Medium/Large slope (~2,000 m²) | 80–120 m³/h | 14–22 m | Best balance of capacity + mobility |
| Very large/high slopes | 120–200 m³/h | 20–30 m | Heavy machines |
👉 For ~2,000 m², a wet shotcrete machine ~80–120 m³/h with a boom ≥14 m is typically ideal-fewer relocations, efficient coverage.
Crawler machines are preferred if terrain is rough or slopes are inaccessible by truck.
4. Typical Equipment Configuration
Core Components
Concrete pump: 80–120 m³/h (S-valve / twin-piston)
Air compressor: ~8–12 m³/min @ 0.7–0.8 MPa
Shotcrete boom arm: multi-section 14–22 m
Accelerator dosing system: automatic proportioning
Remote control: for safer operation
Hopper with agitator: keeps mix uniform
Mobility Base
Crawler chassis: most flexible on slopes
Truck chassis: good for road access sites
Trailed units: lower cost, require towing
5. Concrete Mix & Shotcrete Quality
Concrete Mix
Aggregate ≤ 15 mm
Slump 120–180 mm
Proper accelerator (liquid or dry) for early set
Optional fibers for crack control
Quality Goals
Low rebound (ideally <15%)
Dense, well-bonded layer
Uniform thickness (monitor during spraying)
6. Construction Workflow
Slope prep – remove loose rock/soil
Drill and install anchors/rock bolts
Fix steel mesh / welded wire
Spray shotcrete in layers (top-down)
Finish surface & cure (water spray / membrane)
7. Choosing the Right Boom Reach
The boom reach determines how easily you cover the whole slope:
14–16 m: up to medium slopes
18–22 m: large or high slopes
>22 m: very high or deep cut slopes
Longer reach reduces the need to reposition the machine frequently.
Quick Selection Checklist
✅ Estimated total shotcrete volume (m³)
✅ Maximum vertical and horizontal reach required
✅ Terrain type (smooth / rough / steep)
✅ Access constraints (road vs. off-road)
✅ Need for anchors, mesh, fibers
✅ Labor & safety requirements
When to Use Larger Machines
Use a higher-capacity machine (120–200 m³/h) when:
The slope area >> 2,000 m²
You need very fast progress
The design thickness is >100 mm
There are multiple faces to cover
If you want, we can help you with a specific equipment list & model recommendations based on your exact slope dimensions (height, angle, terrain) and design thickness.
