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Introduction of Trenchless Pipeline Construction Method

Equal Cross Tee application 3

Introduction of Trenchless Pipeline Construction Method

(1) Closed pipe jacking:
Advantages: High construction accuracy.

Cons: High cost.

Scope of application: water supply and drainage pipeline, comprehensive pipeline: applicable pipeline.

Applicable pipe diameter: 300-4000m.

Construction accuracy: less than ±50mm.

Construction distance: longer.

Applicable geology: various soil layers.
2Advantages of shield method: fast construction speed.

Scope of application: water supply and drainage pipeline, comprehensive pipeline.

Applicable pipe diameter: over 3000m.

Construction accuracy: uncontrollable.

Construction distance: long.

Applicable geology: various soil layers.

 

(3) Shallow buried underground construction pipe (tunnel)
Advantages: Strong applicability.

Disadvantages: Slow construction speed, high cost.

Scope of application: water supply and drainage pipeline, comprehensive pipeline.

Applicable pipe diameter: above 1000mm.

Construction accuracy: less than or equal to 30mm.

Construction distance: longer.

Applicable geology: various strata.

 

(4) Directional drilling
Advantages: Fast construction speed.

Disadvantages: Low control accuracy.

Scope of application: Flexible pipe.

Applicable pipe diameter :300mm – 1000mm.

Construction accuracy: not more than 0.5 times the pipe diameter.

Construction distance: short.

Applicable geology: sand pebble and water-bearing strata are not applicable.
(5) Tamping pipe method
Advantages: Fast construction speed, low cost.

Disadvantages: Low control accuracy.

Scope of application: Steel pipe.

Applicable pipe diameter :200mm – 1800mm.

Construction accuracy: uncontrollable.

Construction distance: short.

Applicable geology: water-bearing stratum is not applicable, sand pebble stratum is difficult.


Post time: Aug-05-2022