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High-speed railway tunnel construction technology
The construction of high-speed railway tunnels requires advanced technology and precision engineering to ensure safe and efficient transportation. High-speed rail has become an important part of modern transportation infrastructure, providing fast and reliable travel for millions of people around...Read more -
Vice Chairman of the National People’s Congress, Ding Zhongli, recently led a delegation of the European and American Alumni Association on a visit to the China Science and Technology Promoti...
Recently, Ding Zhongli, Vice Chairman of the National People’s Congress, led a delegation of the European and American Alumni Association to visit the China Science and Technology Promotion Association in Singapore. Mr. Wang Xiaohao, General manager of our company, attended the meeting as a...Read more -
Application of low headroom rotary drilling rig
A low headroom rotary drilling rig is a specialized type of drilling equipment that can operate in areas with limited overhead clearance. It is commonly used in various industries and applications, including: Urban Construction: In urban areas where space is limited, low headroom rotary drilling ...Read more -
Commonly used piling methods for bored pile foundation formation
Ⅰ. Mud shielding wall formed piles Forward and reverse circulation bored piles: Forward circulation is that the flushing fluid is sent to the bottom of the hole by the mud pump through the drilling rod, and then returns to the ground from the bottom of the hole; the reverse circulation flushing f...Read more -
Construction technology and key points of high-press churning pile
High-pressure jet grouting method is to drill a grouting pipe with a nozzle into a predetermined position in the soil layer by using a drill machine, and use high-pressure equipment to make the slurry or water or air become a high-pressure jet of 20 ~ 40MPa from the nozzle, punching, disturbing a...Read more -
Design and construction technology of secant pile wall
The secant pile wall is a form of pile enclosure of foundation pit. The reinforced concrete pile and plain concrete pile are cut and occluded, and Piles are arranged to form a wall of piles interlocking with each other. The shear force can be transferred between the pile and pile to a certain ext...Read more -
How to remove pile head
The Contractor shall use crack inducer or equivalent low noise method for removal of pile head to cut-off level. The Contractor shall preinstall crack inducer to effectively render crack on the pile at about 100 – 300 mm above the pile head cut off level. The pile starter bars above this le...Read more -
What if shrinkage occurs during drilling?
1. Quality problems and phenomena When using a borehole probe to check for holes, the hole probe is blocked when lowered to a certain part, and the bottom of the hole cannot be inspected smoothly. The diameter of a part of the drilling is less than the design requirements, or from a certain part,...Read more -
10 basic requirements for deep foundation pit support construction
1. The construction plan of deep foundation pit enclosure must be determined according to the design requirements, depth and site environmental engineering progress. After spinning, the construction plan shall be approved by the chief engineer of the unit and submitted to the chief supervision en...Read more -
How can the foundation be prevented from slipping or tilting when the foundation is geologically uneven?
1. Quality problems and phenomena The foundation slips or tilts. 2. Cause analysis 1) The bearing capacity of the base is not uniform, causing the foundation to tilt to the side with less bearing capacity. 2) The foundation is located on the inclined surface, and the f...Read more -
How to deal with hole collapse during drilling?
1. Quality problems and phenomena Wall collapse during drilling or after hole formation. 2. Cause analysis 1) Due to the small mud consistency, poor wall protection effect, water leakage; Or the shell is buried shallow, or the surrounding sealing is not dense and there is wat...Read more -
How to ensure the pouring quality of the dug pile concrete?
1. Quality problems and phenomena Concrete segregation; The strength of concrete is insufficient. 2. Cause analysis 1) There are problems with concrete raw materials and mix ratio, or insufficient mixing time. 2) No strings are used when injecting concrete, or the dist...Read more
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