Classification of pipe jacking machines

1. Sort by the principle of balance
It can be divided into mud-water balancing Pipe Jacking Machine, soil pressure balancing pipe jacking machine, mud enrichment type shield pushing machine and multi-function pipe jacking machine.
Mud-water balancing pipe jacking machine is the most widely used one at present. Its main advantages are as follows:
(1) Suitable for a wide range of soil, including soft soil, clay, sandy soil, gravel soil and hard soil.
(2) Strong crushing capacity, large crushing size and large quantity.
(3) with an independent water injection grouting system.
(4) The jacking speed is fast, the fastest jacking speed is 200 mm per minute.
(5) High construction accuracy, up and down left and right correction, the maximum correction Angle of 3.5°.
(6) The ground centralized control system is safe, intuitive and convenient.
2. Categorize by caliber
It can be divided into large diameter, small diameter and micro pipe jacking four types.
Mainly refers to DN2000 above the pipe jacking, people can walk upright;
Most of the pipe diameters are DN1000~DN1800. People need to bend down when walking in it.
The diameter is mostly DN300~800. In order to ensure the quality of pipe jacking, it is recommended to use DN400 or above pipe jacking construction technology.
Micro-pipe jacking machine has huge application space in the reconstruction of old city, environmental protection, can cross roads, Bridges and buildings, crossing ability is strong, no disturbing, small soil disturbance, is the best choice for urban waterlogging control.
3. Sort by jacking length
Common distance jacking and long distance jacking are divided by the distance between the jacking pit and the receiving pit. At present, there is no clear regulation on the division of lifting distance. Currently, jacking over 500 meters is common, and jacking over 500 meters can be called long distance jacking.
4. Classification by geological adaptability
This classification mainly examines the adaptability of cutter heads to geology and can be divided into flat type, rock type and compound type.
Flat pipe jacking machine is suitable for mud, sand and soil, and has poor passability in rock strata and complex geological conditions;
The tool head of rock pipe jacking machine is equipped with rock breaking tool head, which is especially suitable for passing through the hard soil layer with large stone content. However, the cost of tool head assembly is too high. At the same time, if there is no corresponding design in the clay layer, it is easy to cause the risk of mud paste tool head locking.
Composite pipe jacking machine, as the name suggests, combines the technical advantages of plate type and rock type, and is suitable for rock compound formation. It has excellent performance in different strata and different strength conditions.