1. Soil Nailing Wall Technical Specifications: Nail Length: 0.5–1.2 times excavation depth Spacing: 1–2 m Inclination Angle: 5°–20° from horizontal Reinforcement: HRB335 or HRB400 steel bars (Ø16–32 mm) Drill Hole…
Manual hole-digging pile construction is a high-risk operation involving potential hazards such as falls from height, struck-by objects, mechanical injuries, electric shocks, poisoning and suffocation, and drowning. So, how can…
For drill rig operators, track derailment is a frequent issue. While occasional derailment is unavoidable due to harsh working conditions, such as dirt or stones getting lodged in the tracks,…
Water contamination in rotary drilling rig engine oil is a common but serious issue. If not addressed promptly, it can lead to severe consequences such as engine crankshaft deformation, engine…
Overview Bored piles are constructed by drilling holes into the ground to form a well of specific shape and size. Once the desired depth is reached, a reinforcement cage is…
Underground continuous wall construction is a common and essential technique in municipal engineering, widely used in deep foundation pit projects in various cities. Upon completion, this method forms a continuous…
Abstract During the construction of cast-in-place piles using rotary drilling rigs, hole collapse poses the most significant challenge in the boring process. Through technical research and engineering practice, two effective…
Introduction Underground diaphragm walls are a common construction method in municipal engineering, widely used in deep foundation pits for urban projects. After completion, they form a continuous reinforced concrete wall…
Pile testing is a critical process in construction to ensure the safety, reliability, and efficiency of foundation systems. There are three main types of pile testing: design test piles, pre-construction test piles,…
Introduction With the rapid development of metro construction, underground stations are evolving to serve multiple functions. These stations often require large underground spaces, which may result in insufficient soil cover…
Pile Foundation Construction Process (Static Pressure Piling) Key Construction Steps: Design Review & Preparation Drawing review and approval Pile numbering Pile machine walking route planning Pile foundation construction plan development…
Introduction Bored pile foundation construction is a critical process in modern construction projects. This comprehensive guide outlines the complete step-by-step procedure for bored pile construction, ensuring quality, safety, and compliance…
