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Development trend of rotary drilling rig working device: a new era of efficient and low-carbon construction

by admin on 25-03-21

Driven by the dual drive of “double carbon” goal and diversified infrastructure demand, the working device of rotary drilling rig is undergoing a leapfrog upgrade from a single function to a multi-dimensional empowerment. As the core carrier of pile foundation engineering, its technic...

Development trend of rotary drilling rig host

by admin on 25-03-13

As the core equipment in the infrastructure construction, the technical innovation of rotary drilling rig is closely related to the market demand. With the acceleration of urbanization, stricter environmental protection policies and the penetration of intelligent technologies, rotary drilling RIG...

Development trend of rotary drilling rig construction method

by admin on 25-03-06

With the rapid development of world‘s infrastructure construction and the continuous innovation of construction technology, in more and more foundation construction projects that are restricted by narrow sites, mechanical noise control, mud pollution, and complex geological conditions, rota...

Comprehensive interpretation of the gravel pile construction method

by admin on 25-02-25

Gravel pile, is a kind of bulk pile, with no bonding strength of gravel (pebble) as the main material, with vibration, impact or water flushing in the weak foundation hole, then gravel (pebble) extrusion into the hole, the formation of large diameter gravel of dense pile, composed of gravel (peb...

Analysis and Control Measures of Sedimentation at the Bottom of Rotary Excavated Piles

by admin on 25-02-19

The sediment at the bottom of rotary drilling and grouting piles may occur during multiple stages of construction, such as drilling holes, placing steel cages, and pouring concrete. Analysis suggests that the causes of sediment can be roughly divided into the following categories: 1.1 Coll...

How to deal with the deviation hole problem in the construction of rotary digging drill?

by admin on 25-02-08

1.The sharp deviation hole is generally caused by geology. Due to the weathering degree of rock layer, uneven rock distribution, etc., the drill pipe is suddenly stuck when the main roll reaches a certain position in the hole, or the drill pipe suddenly leans to one side, indicating a sudden dev...

Is cement soil pile reliable as a foundation pit support method?

by admin on 25-01-26

Cement soil wall is a non mainstream form of support structure, suitable for narrow soil conditions, and not widely used in practical engineering applications.Cement earth walls are generally used in soft soil foundation pits with small depths.Under these conditions, the anchor rod does not have ...

Skills for dealing with several special problems in manual bored pile construction

by admin on 25-01-15

Manual bored pile construction is convenient, does not require large machinery and equipment, and is cost-effective. Therefore, it is widely used in roads and civil buildings. However, the underground working conditions of bored piles are poor, the environment is harsh, and the labor intensity is...

Two technical methods for improving the bearing capacity of bored piles

by admin on 24-12-26

At present, the commonly used technical methods to improve the vertical bearing capacity of a single cast-in-place pile include the expansion method and the grouting method after drilling the cast-in-place pile. In the same stratum, the pile end resistance is directly proportional to the pile end...

How is the diaphragm wall constructed

by admin on 24-12-12

Diaphragm wall is a diaphragm wall with anti-seepage (water) retaining and load-bearing functions, formed by excavating a narrow and deep trench underground with the help of excavation machinery and mud protection, and constructing suitable materials such as reinforced concrete in the trench. It ...

Construction technology of long spiral bored pile

by admin on 24-12-06

1、 Process characteristics: 1. Long spiral drilled cast-in-place piles generally use superfluid concrete, which has good flowability. Stones can suspend in the concrete without sinking, and there will be no segregation. It is easy to put it into a steel cage; (Superfluid concrete refers to conc...

Key points for implementing pile foundation testing

by admin on 24-11-29

The starting time of pile foundation testing should meet the following conditions: (1) The concrete strength of the tested pile should not be lower than 70% of the design strength and should not be lower than 15MPa, using strain method and acoustic transmission method for testing; (2) Using the c...