High-pressure water jet drilling equipment has practical applications in a variety of fields. The following are several typical scenarios and project examples:
1. Building Pile Foundation Engineering
Urban Subway Station Pile Foundation Construction
Application Background: Subway station expansion projects require construction adjacent to existing buildings, and traditional drilling could disturb surrounding structures.
Solution: Pre-drilling pile holes with high-pressure water jet drilling equipment prevents vibrations from affecting adjacent buildings.
Result: Pile holes with a diameter of 800mm and a depth of 30m were completed with an accuracy error of less than 1%, increasing construction efficiency by 40%.
Rock-embedded Piles for High-Rise Buildings
Challenge: The underground rock is hard (granite), resulting in severe wear on mechanical drill bits.
Solution: Water jet drilling followed by hole enlargement with a rotary drilling rig reduces drill tool wear.
Result: Single-hole completion time reduced to one-third of traditional methods.
II. Municipal and Underground Engineering
Trenchless Pipeline Laying
Requirement: Laying pipelines in busy traffic areas to avoid road excavation.
Implementation: Waterjet equipment drills holes horizontally, then pulls in the pipeline.
Advantages: No noise or dust, zero disruption to residents.
Tunnel Rescue Channel
Emergency: After a landslide, a rescue channel must be quickly opened, but the rock mass is fragmented.
Application: Waterjet drilling combined with micro-shield tunneling can excavate a 15m tunnel in three days.
III. Mining and Special Engineering
Pre-splitting Blasting in Hard Rock Mines
Problem: Rock walls are uneven after traditional drilling and blasting.
Improvement: Pre-cutting cracks with a waterjet before blasting improves rock wall smoothness by 60%.
Nuclear Facility Decommissioning Project
Safety Requirements: Dust-free and spark-free cutting of the concrete shield is required.
Solution: Waterjet equipment provides precise hole drilling, assisting demolition robots.
IV. Summary of Case Studies
Technical Highlights: Both demonstrate the waterjet equipment's environmental friendliness, high precision, and adaptability to complex formations.
Economical: Although the equipment's initial cost is high, the improved overall efficiency significantly reduces total costs.
