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[Sany Construction Method Lecture] A Brief Analysis of the Causes of Hole Deviation in Rotary Drilling Rigs

The hole inclination phenomenon that occurs during rotary drilling rig construction is not caused solely by objective factors related to equipment or geology, nor solely by subjective operational factors, nor by any other single factor; the causes of the problem must be considered comprehensively from multiple angles and aspects. Addressing any construction method issue in rotary drilling rig operations requires considering the relationships among equipment, geology, and operation as an integrated whole during construction and reconciling them properly.

2021-01-26
Wire Rope Use and Maintenance - Fundamentals

Wire rope must be handled with great care! When unloading wire rope, never push it directly down from a height, as this may dent the rope or damage the reel. The correct method is to insert a steel pipe through the axial hole of the reel, attach slings to both ends, and use a crane or similar machinery to lift and load/unload the wire rope.

2021-01-15
[Maintenance "72 Tips"] New Year, New Look—Don't Forget to Refuel Your Tunneling Machine!

New Year, New Look—Don't Forget to Refuel Your Tunneling Machine!

2021-01-15
[Construction Method Lecture] How Can Rotary Drilling Rigs Overcome Hard Strata of 158 MPa?

The project is located at the intersection of Hubin South Road and Hubin West Road in Siming District, Xiamen. The pile foundation is designed as cast-in-place concrete bored piles with a diameter of 1200 mm and a designed hole depth ranging from 60 to 96 m.

2021-01-13
Vibroflotation Method | The Role of Vibroflotation in Soft Soil Reinforcement

Vibroflotation was developed in 1937, when the German company Keller designed and manufactured equipment that represented the prototype of the modern vibratory probe, and it was successfully used to densify sand and gravel foundations. In the early 1960s, vibroflotation began to be used to reinforce cohesive soil foundations; because the fill material was crushed stone, the resulting columns became known as stone columns. China began applying vibroflotation in 1977.

2021-01-12
[SANY Construction Method Classroom] Construction Method for Rotary Drilling Rigs in Clay Layers

For rotary drilling rigs, drilling in different strata requires consideration of different factors, but ultimately it comes down to how to reasonably select drill pipes and drill bits, how to modify drill bits according to the strata, what construction methods and techniques to adopt, and how to operate the drilling, so as to ultimately achieve effective and efficient drilling. The following provides a detailed explanation of construction in clay layers.

2020-07-15
Items, Methods, and Quantities for Quality Testing of Foundation Engineering

Items, Methods, and Quantities for Quality Testing of Foundation Engineering. Foundation type: precast pile 1. Test item: pile body integrity. Test method: low-strain method or high-strain method. Test quantity: the number of piles sampled is not

2020-02-11
[Technical Lecture] Winter Preheating Guidelines for Dynamic Compaction Machines

All movements of a dynamic compaction machine are realized through its hydraulic system, and the relationship between the hydraulic system and hydraulic oil is like that between the human body and blood. The viscosity of hydraulic oil is directly related to temperature, and viscosity

2020-01-17
Maintenance and Care of Rotary Drilling Rig Tracks

1. Introduction to Rotary Drilling Rig Tracks: The track undercarriage of a rotary drilling rig consists of the track assembly, carrier rollers, track rollers, drive sprocket, idler wheel, tensioning device, and other components. 2. Cleaning of Rotary Drilling Rig Tracks

2020-01-15
Case Analysis of Mechanical System Failures in Full-Slewing Drilling Rigs and Key Points for Long-Term Equipment Storage

The mechanical system is an important component of the complete machine. It mainly relies on manual control to realize the operation of mechanical equipment, enabling power transmission to drive the executing machinery and achieve various required actions. Full-slewing drilling rig

2019-12-31
Rebar Construction in the Rainy Season: Rust Removal Is Crucial

Rebar is arguably the most common building material found on construction sites. During rainy seasons such as summer, on-site personnel should pay even greater attention to rust removal during construction. Rebar requires no rust removal and can

2019-07-10
First Steel Shell of the Shenzhen-Zhongshan Link Immersed Tube Tunnel Successfully Shipped

The first steel shell of the immersed tube tunnel for the Shenzhen-Zhongshan Link project has been completed and was shipped by water on June 26 to Niutou Island in Guishan Town, Zhuhai, for self-compacting concrete

2019-06-28

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