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Under what circumstances would you choose a pipe jacking machine for construction?

Under what circumstances would you choose a pipe jacking machine for construction?

(Summary description)Underwhatcircumstanceswouldyouchooseapipejackingmachineforconstruction?Underwhatcircumstanceswouldyouchoosetoexcavate? Wherethegeologicalconditionsaregoodandthedepthislessthan4meters,thepipejackingmachinegenerallyadoptsexcavationconstruction.Theshallowerpipelineshavefasterexcavationandconstructionspeed.Theycanbeexcavatedatnightandcanbebackfilledinthemorning,andthencoveredwithsteelplates,whichwillnotaffectthetrafficmuch.Ifthepipelineisdeep,inordertopreventcollapse,theexcavationrequiresacertainslope,whichwillhaveagreaterimpactontraffic.Iftheundergroundisalayerofquicksandandsoilwithstrongwaterpermeability,itisalsoeasytocollapseandisnotsuitableforexcavation.  Howthickisthesewagepipeforpipejackingconstruction?Whatmaterialisitmadeof?Theinnerdiameterisgenerallyabove600mm.First,themainsewagedischargeisgenerallylarge.Second,ifthepipediameteristoosmall,itisimpossibletoinstallamuddywaterlooppipeinthepipe.SomesewagepipesarePEpipesmadeofsyntheticmaterials,andsomearereinforcedconcretepipes.Thepipejackingconstructionusesreinforcedconcretepipes,thethicknessofthepipewallismorethan6cm,andthepipemouthisequippedwithaprotectivesteelring,whichwillnotbedamagedbythejacking.Asectionofreinforcedconcretesewagepipegenerallyweighsabouttwotons.Jacksareusedtojackthesewagepipes,andmultiplejackscanbeusedatthesametimeasneeded,andthejackingforcecangenerallyreachabout20tons.  Pipejackingconstructioncaneffectivelysolvetheproblemofstrongwaterpermeabilityofquicksandlayerandsoil,andtheimpactofconstructionissmall.However,pipejackingisnotsuitableforpipeswithasoilcoveringoflessthan4meters,becausethepipejackingmaycausethegroundtoarch.Inaddition,takingintoaccounttheventilationandotherreasonsduringconstruction,thepipejackingconstructiongenerallyrequiresaworkwelltobedugevery200meters,andthepipejackingconstructionbetweentwoworkwellsgenerallytakes2-3months.

Under what circumstances would you choose a pipe jacking machine for construction?

Under what circumstances would you choose a pipe jacking machine for construction?

(Summary description)Underwhatcircumstanceswouldyouchooseapipejackingmachineforconstruction?Underwhatcircumstanceswouldyouchoosetoexcavate? Wherethegeologicalconditionsaregoodandthedepthislessthan4meters,thepipejackingmachinegenerallyadoptsexcavationconstruction.Theshallowerpipelineshavefasterexcavationandconstructionspeed.Theycanbeexcavatedatnightandcanbebackfilledinthemorning,andthencoveredwithsteelplates,whichwillnotaffectthetrafficmuch.Ifthepipelineisdeep,inordertopreventcollapse,theexcavationrequiresacertainslope,whichwillhaveagreaterimpactontraffic.Iftheundergroundisalayerofquicksandandsoilwithstrongwaterpermeability,itisalsoeasytocollapseandisnotsuitableforexcavation.  Howthickisthesewagepipeforpipejackingconstruction?Whatmaterialisitmadeof?Theinnerdiameterisgenerallyabove600mm.First,themainsewagedischargeisgenerallylarge.Second,ifthepipediameteristoosmall,itisimpossibletoinstallamuddywaterlooppipeinthepipe.SomesewagepipesarePEpipesmadeofsyntheticmaterials,andsomearereinforcedconcretepipes.Thepipejackingconstructionusesreinforcedconcretepipes,thethicknessofthepipewallismorethan6cm,andthepipemouthisequippedwithaprotectivesteelring,whichwillnotbedamagedbythejacking.Asectionofreinforcedconcretesewagepipegenerallyweighsabouttwotons.Jacksareusedtojackthesewagepipes,andmultiplejackscanbeusedatthesametimeasneeded,andthejackingforcecangenerallyreachabout20tons.  Pipejackingconstructioncaneffectivelysolvetheproblemofstrongwaterpermeabilityofquicksandlayerandsoil,andtheimpactofconstructionissmall.However,pipejackingisnotsuitableforpipeswithasoilcoveringoflessthan4meters,becausethepipejackingmaycausethegroundtoarch.Inaddition,takingintoaccounttheventilationandotherreasonsduringconstruction,thepipejackingconstructiongenerallyrequiresaworkwelltobedugevery200meters,andthepipejackingconstructionbetweentwoworkwellsgenerallytakes2-3months.

Information
Under what circumstances would you choose a pipe jacking machine for construction? Under what circumstances would you choose to excavate?
 
Where the geological conditions are good and the depth is less than 4 meters, the pipe jacking machine generally adopts excavation construction. The shallower pipelines have faster excavation and construction speed. They can be excavated at night and can be backfilled in the morning, and then covered with steel plates, which will not affect the traffic much. If the pipeline is deep, in order to prevent collapse, the excavation requires a certain slope, which will have a greater impact on traffic. If the underground is a layer of quicksand and soil with strong water permeability, it is also easy to collapse and is not suitable for excavation.
   
How thick is the sewage pipe for pipe jacking construction? What material is it made of? The inner diameter is generally above 600 mm. First, the main sewage discharge is generally large. Second, if the pipe diameter is too small, it is impossible to install a muddy water loop pipe in the pipe. Some sewage pipes are PE pipes made of synthetic materials, and some are reinforced concrete pipes. The pipe jacking construction uses reinforced concrete pipes, the thickness of the pipe wall is more than 6 cm, and the pipe mouth is equipped with a protective steel ring, which will not be damaged by the jacking. A section of reinforced concrete sewage pipe generally weighs about two tons. Jacks are used to jack the sewage pipes, and multiple jacks can be used at the same time as needed, and the jacking force can generally reach about 20 tons.
   
Pipe jacking construction can effectively solve the problem of strong water permeability of quicksand layer and soil, and the impact of construction is small. However, pipe jacking is not suitable for pipes with a soil covering of less than 4 meters, because the pipe jacking may cause the ground to arch. In addition, taking into account the ventilation and other reasons during construction, the pipe jacking construction generally requires a work well to be dug every 200 meters, and the pipe jacking construction between two work wells generally takes 2-3 months.
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Next: What is the basic working principle of the rock pipe jacking machine

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