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Trenchless Pipe Jacking For Laying Large-diameter Pipelines

Trenchless Pipe Jacking For Laying Large-diameter Pipelines

1. Project overview The project laid a 63m long, 24-hole telecommunications pipeline in a certain city. This road has a large traffic volume, the road is concrete, and the thickness is about 30cm. Below the concrete cushion, the thickness of the miscellaneous fill is not large, mainly the Quaternary soil layer, and the stratum is rich in water content. As …

Method Of Trenchless Pipeline Detection

Method Of Trenchless Pipeline Detection

What are the methods of trenchless pipeline detection? How should it be applied? Detection method selection According to the detection task and purpose, combined with the field survey and field working conditions, the geophysical prospecting method of this project is selected. 1. Electromagnetic induction method Metal pipelines generally have a medium strength or above (the K value is generally 100×4π×SI~1000×10-6×4π×SI), …

Application of Trenchless Drilling Machine in Crossing Construction of Granite Stratum

Application of Trenchless Drilling Machine in Crossing Construction of Granite Stratum

The use of horizontal directional drill crossing technology for pipeline crossing construction is an ideal construction method for completing water and electricity pipeline network construction and communication optical cable laying under the principle of not destroying the landform and protecting the environment in urban municipal construction. In the past ten years, horizontal directional drilling crossing technology has been widely used …

Causes Of Unstable Use Of Non-excavation Mud Bentonite

Causes Of Unstable Use Of Non-excavation Mud Bentonite

The mud made of non-excavation mud bentonite has a certain protective effect on the borehole wall, and is an indispensable raw material in the construction of the top-drawing pipe. At the same time, bentonite also plays a role in lubricating and maintaining drilling tools and carrying drill cuttings. Therefore, the trenchless mud bentonite is of great significance to the smooth …

AGIT Buried Pipeline Trenchless Detection Technology

AGIT Buried Pipeline Trenchless Detection Technology

AGIT buried pipeline trenchless detection technology A new type of non-destructive testing technology AGIT (The Above Ground Inspection Technology), as a true non-invasive non-destructive testing technology, overcomes the limitations of ILI and ECDA, without the need for pigging and opening In special preparation situations, it is possible to directly assess the pipeline condition from the ground, locate and classify external …

Construction Technology Control Of Trenchless Pipe Jacking Mud-water Balance Method

Construction Technology Control Of Trenchless Pipe Jacking Mud-water Balance Method

With the acceleration of the urban process in China, the construction of underground pipelines is getting bigger and bigger, and the people’s awareness of environmental protection has increased. Pipe jacking technology is playing an increasingly important role in the construction of underground pipelines. It can pass through urban roads, ground buildings, underground structures and various underground pipelines without large-scale excavation …

The Ratio Of Mud To Different Soil Layers For Trenchless Construction

The Ratio Of Mud To Different Soil Layers For Trenchless Construction

The mud used in the construction of horizontal directional drilling rigs in China is mainly composed of bentonite, which is easy to produce hole collapse and stuck drill problems, which causes the failure of horizontal directional drilling. Aiming at the reasons for failure in drilling, drawing on the drilling mud technology of the petroleum industry, combining the changeable surface soil …

Trenchless Directional Drilling Knowledge

Trenchless Directional Drilling Knowledge

As early as around 1600 AD, there were bamboo brine pipes crossing rivers in Sichuan, China. In 1888, the United States used buoys to lay underwater pipelines. Directional drilling pipe laying technology is an advanced pipe laying technology developed abroad in the 1980s. This technology is an advanced non-excavation technology widely used internationally. It uses directional drilling under the soil …

Preparation Work Before The Start Of Trenchless Drilling

Preparation Work Before The Start Of Trenchless Drilling

Before the trenchless drilling rig starts construction, the following preparations must be made to ensure the smooth progress of the construction: 1. Construction site detection: Use detection instruments to find out the direction, depth and nature of the original underground pipe network, and make a mark; then verify with the help of municipal archives and manual on-site surveys. 2. Check …

Application of Small Trenchless Drilling Machine in Crossing Construction of Granite Stratum

Application of Small Trenchless Drilling Machine in Crossing Construction of Granite Stratum

The use of horizontal directional drill crossing technology for pipeline crossing construction is an ideal construction method for completing water and electricity pipeline network construction and communication optical cable laying under the principle of not destroying the landform and protecting the environment in urban municipal construction. In the past ten years, horizontal directional drilling crossing technology has been widely used …

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