XCMG 500mm Slurry Balance Pipe Jacking Machine XDN500H-L for Urban Sewage Pipeline Project.

XCMG Slurry balance pipe jacking machine XDN500H-L is suitable for such stratum as rock and silt etc., widely used in rain and sewage diversion, urban pipe corridors, power tunnels, and other pipelines crossing the field.

1. Higher reliability:

The hydraulic overload protection system is safer and more reliable;

Hydraulic motors and reducers adopt integral mechanical seals, which have good waterproof and moisture-proof performance.

2. Higher construction efficiency:

The hydraulic motor has large output torque, high speed, and fast construction speed;

The empty stroke speed is fast and the construction waiting time is short.

3. Higher security:

The unique domestic 24V low-voltage console, safe operation;

The patented shell follow-up sealing design, the sealing strip has a long service life and good effect; the spindle adopts multiple sealing types, which is reliable and able to withstand high water pressure.

4. Better operability:

The cutter head speed and jacking speed can be adjusted steplessly, which makes it easier to realize the matching operation of the cutter head speed, jacking speed and different formations.

5. Smaller working well:

The size of the originating well is Φ3300mm, and the size of the receiving well is Φ2600mm.

Construction case:

The sewage pipe designed for this section of the pipe jacking project is a Φ500mm concrete prefabricated pipe with a length of 44m and a buried depth of 6.0m. The pipe jacking machine is used for construction. There is no need to excavate the road during the construction process, only a small working well and receiving well are needed. ; The impact on traffic and residents is small; noise and dust pollution from excavation construction can be avoided, and it is an environmentally friendly trenchless construction method for pipelines.

The construction stratum is medium-coarse sand and sandy clay stratum.

The XDN500H-L Slurry balance pipe jacking machine is selected for construction. The equipment is hydraulically driven and has good waterproof and moisture-proof performance; the overall structure is compact, the diameter of the launching well only needs 3.5m, and the receiving well needs 2.5m; different knives can be configured according to different working conditions At the same time, the cutter head speed, jacking speed and mud flow can be adjusted steplessly, which has excellent working condition adaptability.

Construction efficiency: the comprehensive construction efficiency of this section of the pipe jacking project is about 2m/h.

Case summary:

1. For pipe jacking construction on sandy soil layers containing a large amount of groundwater, necessary water-stop measures should be taken according to the construction requirements, such as double-layer waterstops or even high-pressure rotary jetting water-stopping to prevent the massive gushing of groundwater from the entrance of the cave. 

2. When pipe jacking is carried out on loose sand soil, the machine head should be pushed slowly when entering the hole. The mud inlet and discharge pump can be temporarily closed to prevent the hole from being washed out. After a certain distance, the mud inlet and discharge pump shall be turned on for circulation.

3. For soil pipe jacking construction, attention should be paid to the comparison between the amount of ground cutting and the amount of slag produced to prevent the underground soil from collapsing and losing with the circulation of mud and water, causing later ground settlement. When necessary, small pump volume jacking or intermittent sludge discharge can be used.

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