What is the difference between horizontal directional drilling construction and pipe drawing constru

1. Nature. Horizontal directional drilling.

Construction: A construction that lays a variety of underground utilities (pipelines, cables, etc.) under the condition of not excavating the ground surface.

Pipe drawing construction: put the pipeline into the groove with a slot, and then drill the pipe on the other side and drag the pipeline with a tractor machine, which is generally constructed after a pipeline is welded and formed.

Pipe drawing construction: horizontal directional drilling construction:

2. Features. Horizontal directional drilling construction: A new construction technology that combines the directional drilling technology of the petroleum industry with the traditional pipeline construction method, and it has the construction speed.

It has the advantages of fast, high construction accuracy and low cost.

Pipe drawing construction: it is a kind of pipeline burial construction technology without excavation or less excavation.

3. Application. Horizontal directional drilling construction: widely used in water supply, electricity, telecommunications, natural gas, gas, oil and other pipeline laying construction, suitable for sand, clay, etc

Pebbles and other conditions, most of the non-hard rock areas in China can be constructed.

Pipe construction: It solves the problems of damage to urban buildings and road traffic blockage in pipeline burial construction, and highlights its advantages in stabilizing soil and environmental protection. It is important for cities with heavy traffic, dense population, many ground buildings, and complex underground pipelines to create a clean, comfortable and beautiful environment for the city.

Hello dear; I'm glad to be able to answer for you Why directional drilling should not straighten buried pipes: directional drilling: The diameter of the pipe under construction is small (mostly less than 1 meter), the distance is short, and the buried depth of the pipeline is shallow.

Pipe jacking is the opposite. It's not the same thing. As the name suggests, it is a kind of pipeline that plays a traction and dragging role in the disturbance pipeline, and its cohesion and toughness are relatively good.

At present, it is more common to see the drag pipe with HDPE winding pipe structure and solid wall pipe structure. At the same time, it is also a construction method. It is mainly difficult to use the pipe jacking method in the construction of small pipe diameter.

The relative construction conditions are also lower than those of the pipe jacking method. Occupies less space. Directional drilling is a kind of pipeline construction technology in the engineering and technology industry, generally used in oil, natural gas and some municipal pipeline construction, by the large directional drilling rig for drilling, reaming, hole cleaning and other processes and then carry out pipeline drag directional drilling is generally used for the laying of electric power communication oil gas thermal water pipelines, drainage pipes are generally relatively large in diameter, with slurry balance, artificial pipe jacking, or shield machine to do, the diameter of the pipeline with directional drilling cost is too high, to choose the tonnage of the Yu Li virtual machine is relatively large, The appearance fee is too expensive,

Hello, directional drilling construction should not be used for the construction of directly pulling into the direct buried pipe of Shiling. Before construction, the method of geological exploration and cluster drilling sampling or local cherry blossom excavation should be used to obtain the distribution of underground soil layers, groundwater level, soil and water pH and other information at the location of directional drilling construction routes.

The main differences are that the properties are different, the methods are different, and the applications are different, as follows:

First, the nature is different.

1. Directional drilling.

Directional drilling refers to a pipeline construction process in the engineering and technology industry.

2. Pipe jacking method.

Pipe jacking method refers to a kind of underground excavation construction method used when tunnels or underground pipelines cross various obstacles such as railways, roads, rivers or buildings.

Second, the methods are different.

1. Directional drilling.

Pipeline construction is carried out by a large directional drilling rig after the process of positioning drilling, reaming, hole cleaning, and rubber limb pipeline backhauling.

2. Pipe jacking method.

During construction, the pipe is pressed into the soil layer with a hydraulic jack supported on the back seat of the foundation pit through the force transmission of the trembling iron and the guide rail, and the soil on the front of the pipe is excavated and transported away at the same time. When the first section of the pipe is all jacked into the soil layer, then the second section of the pipe is connected to the back and continues to jack, so that a section of the pipe is jacked in, the interface is made, and the culvert pipe is built. Eggplant is defeated.

Third, the application is different.

1. Directional drilling.

It is mostly used in oil, natural gas and some municipal pipeline construction.

2. Pipe jacking method.

It is suitable for the construction of culverts or rivers and lakes that pass through existing buildings and traffic lines. Pipe jacking is divided into mechanical excavation jacking, extrusion jacking, hydraulic mechanical excavation and manual excavation jacking according to different excavation methods.