The steel casing wall protection is used during the hole-forming process of the cast-in-place piles drilled by the full-casing and…
The safety and stability of the water-stop curtain have a significant impact on surrounding safety. In actual construction, loopholes may…
Earthworks 1. The excavation slope is too steep 1.1. Phenomenon: During earthwork excavation, the slope of the foundation pit and…
During the construction of pile foundations, due to geographical environment, mechanical equipment, and human factors, it is inevitable that some…
A rotary drilling rig is a construction machine suitable for hole-forming operations in construction foundation projects. It is widely used…
Rock Name (Origin) Different rock names represent their origin. The origin of rocks includes (magmatic rock (intrusive rock, volcanic rock),…
How to Prevent and Control Bored Piles from Deflecting? 1. Quality problems and phenomena 1) The hole is not vertical…
Due to the complex construction technology of bored pile engineering, various visible or invisible factors may interfere with the final…
About large diameter piles (d≥800mm) Size effect of extreme side resistance and end resistance. 1. Size effect of large-diameter pile…
Information required for tank inspection (1) Geotechnical engineering survey report in the detailed survey stage; (2) Structural drawings in the…