CN106247007A - Remote major diameter industrial pipeline deadweight conjugates underlying laying direct-burried construction method - Google Patents

Abstract

The present invention relates to a kind of remote major diameter industrial pipeline deadweight and conjugate underlying laying direct-burried construction method, belong to underground pipeline layout technical field, provide a kind of employing deadweight and conjugate underlying pipeline installation, act on while eliminating torsional stress, avoid and occur the remote major diameter industrial pipeline deadweight of ductile rupture to conjugate underlying laying direct-burried construction method, the technical scheme used, for following the steps below operation, the original ground after clear table flat field spills white lime line according to pipeline planar design position of center line；Arrange pipeline, from the beginning of one end of pipeline, according to regulation width, put ratio of slope and the degree of depth and synchronize retrusive and carry out pipe trench earth excavation；Pipe trench earth excavation is until vacant state occurs in duct bottom, and the pipeline assembled is controlling generation displacement downwards in vertical plane under the potential energy effect of gravity, it is achieved that duct section is the most underlying to be layed in bottom of trench and naturally stretches；The present invention is widely used in underground pipeline layout.

Description

Remote major diameter industrial pipeline deadweight conjugates underlying laying direct-burried construction method

Technical field

The present invention relates to a kind of remote major diameter industrial pipeline deadweight and conjugate underlying laying direct-burried construction method, belong to ground Underground pipelines laying technology field.

Background technology

At present, domestic underground buried metallic conduit construction technology divides two kinds: Yi Zhongshi, according to expropriation of land circle line setting → clear Hang to bottom of trench → ditch except surface attachments → pipe canal digging → groove inspection → pipe base processes → dig operation hole → ground stringing Lower steel pipe is right → ditch under welding → weld seam detection → Crater antiseptic and anticorrosion mend wound → pipeline buttress pour → pipeline both sides return Fill out compacting → above backfilling of pipe canal of the water pressure test → pipeline, recover landforms.Another kind is, according to expropriation of land circle line setting → removing Attachment → original ground stringing group to and welding → Non-Destructive Testing → Crater antiseptic mend wound → pipe centerline plane positioning unwrapping wire → pipe canal digging checks that bottom of trench absolute altitude → duct segments hangs to bottom of trench → valve interface welding → Non-Destructive Testing → interface anticorrosion Mend wound → pipeline both sides and be backfilling and compacted → the water pressure test → landfill recovery landforms.

Technique one is first ditching, after original ground stringing, is hung by every tubing section by section with crane to bottom of trench, group to, welding, Operation all operations under ditch such as detection, anticorrosion, efficiency is low, and dangerous big, long in time limit, occupation of land is many.

Technique two is first ground stringing, be parallel to pipe design centrage side set of locations to, weld, detect, repaired mouth, anti- Rotten all operations on ditch, after unwrapping wire ditching check of foundation subsoil, hang pipeline to bottom of trench with pipe-laying-out machine, valve interface welds under ditch, detects, Repaired mouth, anticorrosion, relative technique one improves efficiency, shortens the duration, but pipeline is concentrated and hung several pipe-laying-out machines of needs, is constructed into This increasing, interim take up an area more, pipeline hang during butt welding of steel tube seam, steel pipe mother metal spiral weld simultaneously by curved, turn round, Shearing comprehensive function.

Summary of the invention

For solving the technical problem that prior art exists, the invention provides one and use underlying laying of deadweight displacement to manage Line, eliminates and acts on while torsional stress, it is to avoid occur under the remote major diameter industrial pipeline deadweight displacement of ductile rupture Put laying direct-burried construction method.

For achieving the above object, under the technical solution adopted in the present invention is the deadweight displacement of remote major diameter industrial pipeline Put laying direct-burried construction method, follow the steps below operation,

A, setting-out, the original ground after clear table flat field spills white lime line according to pipeline planar design position of center line；

B, pipe arrangement, select the midpoint of adjacent valve well spacing on white lime line, with this center as starting point, along phase negative side To tubing section by section carry out steel pipe to, weld, detect, repaired mouth mends wound, anticorrosion, purging, until the line sections between valve well exists Assembling, detection, anticorrosion and purging operation is completed on surface duct planar design centrage；

C, pipe trench excavation of earthwork, from the beginning of one end of pipeline, respectively arrange a backhoe meeting technical parameter in the both sides of pipeline Excavator, according to regulation width, put ratio of slope and the degree of depth and synchronize retrusive and carry out pipe trench earth excavation, apply simultaneously clinometer, Infrared distance measurement device controls the ditching degree of depth, ratio of slope, bottom of trench absolute altitude；

The underlying direct-burried of d, pipeline, pipe trench earth excavation is until vacant state occurs in duct bottom, and the pipeline assembled is from gravity Potential energy effect under control in vertical plane, produce displacement downwards, it is achieved that duct section is the most underlying is layed in bottom of trench nature Stretch, use dynamic strain monitoring technology that duct section is conjugated underlying laying overall process, landfill, pressure testing, normal water delivery four simultaneously Planting the typical section weld seam interface under operating mode and carry out on-the-spot tracking dynamic test weld seam strain, construction completes.

Compared with prior art, the present invention has following technical effect that the present invention uses deadweight to conjugate underlying pipeline installation, Eliminate and act on while torsional stress, it is to avoid generation ductile rupture, improve operating environment, improve effect 1.5 times, it is ensured that The stability of downward welding technology quality and the safety of operating personnel；Save pipe-laying-out machine machine-team simultaneously, reduce the use of excavator machine-team, Saving and weld work day, save earthwork excavation and filling amount, save interim floor space, it is achieved that green construction, comprehensive benefit is notable.

Accompanying drawing explanation

Fig. 1 is original ground stringing floor map in the present invention.

Fig. 2 is ground, Central Plains of the present invention tube coupling welding floor map.

Fig. 3 is that in the present invention, pipeline utilizes gravitional force to conjugate underlying process of deployment generalized section.

Fig. 4 is that in the present invention, pipeline ground group connects displacement shop fixtures process schematic cross section.

Detailed description of the invention

In order to make the technical problem to be solved, technical scheme and beneficial effect clearer, below tie Close drawings and Examples, the present invention is further elaborated.Only should be appreciated that specific embodiment described herein In order to explain the present invention, it is not intended to limit the present invention.

As shown in Figures 1 to 4, the deadweight of remote major diameter industrial pipeline conjugates underlying laying direct-burried construction method, according to Following steps operate,

A, setting-out, the original ground after clear table flat field spills white lime line according to pipeline planar design position of center line；

B, pipe arrangement, select the midpoint of adjacent valve well spacing on white lime line, with this center as starting point, along phase negative side To tubing section by section carry out steel pipe to, weld, detect, repaired mouth mends wound, anticorrosion, purging, until the line sections between valve well exists Assembling, detection, anticorrosion and purging operation is completed on surface duct planar design centrage；

C, pipe trench excavation of earthwork, from the beginning of one end of pipeline, respectively arrange a backhoe meeting technical parameter in the both sides of pipeline Excavator, according to regulation width, put ratio of slope and the degree of depth and synchronize retrusive and carry out pipe trench earth excavation, apply simultaneously clinometer, Infrared distance measurement device controls the ditching degree of depth, ratio of slope, bottom of trench absolute altitude；

The underlying direct-burried of d, pipeline, pipe trench earth excavation is until vacant state occurs in duct bottom, and the pipeline assembled is from gravity Potential energy effect under control in vertical plane, produce displacement downwards, it is achieved that duct section is the most underlying is layed in bottom of trench nature Stretch, use dynamic strain monitoring technology that duct section is conjugated underlying laying overall process, landfill, pressure testing, normal water delivery four simultaneously Plant the typical section weld seam interface under operating mode and carry out on-the-spot tracking dynamic test weld seam strain, make work progress, operational phase pipe The strain stress of road weld seam controls within the elastic range that safety allows, it is ensured that pipeline uses life cycle management from building to Running safety, construction completes.

The present invention utilizes self weight of pipeline to carry out lower displacement pipeline installation, it is possible to acts on while effectively eliminating torsional stress, keeps away Exempted from generation ductile rupture, improved operating environment, improved effect 1.5 times, it is ensured that the stability of downward welding technology quality and The safety of operating personnel；Save pipe-laying-out machine machine-team simultaneously, reduce the use of excavator machine-team, save and weld work day, save the earthwork and dig The amount of filling out, saves interim floor space, it is achieved that green construction, and comprehensive benefit is notable.

The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention Any amendment, equivalent and the improvement etc. made within god and principle, all should wrap within the scope of the present invention.

Claims (1)

1. remote major diameter industrial pipeline deadweight conjugates underlying laying direct-burried construction method, it is characterised in that: according to following step Suddenly operate,

A, setting-out, the original ground after clear table flat field spills white lime line according to pipeline planar design position of center line；

B, pipe arrangement, select the midpoint of adjacent valve well spacing on white lime line, with this center as starting point, along phase negative side To tubing section by section carry out steel pipe to, weld, detect, repaired mouth mends wound, anticorrosion, purging, until the line sections between valve well exists Assembling, detection, anticorrosion and purging operation is completed on surface duct planar design centrage；

C, pipe trench excavation of earthwork, from the beginning of one end of pipeline, respectively arrange a backhoe meeting technical parameter in the both sides of pipeline Excavator, according to regulation width, put ratio of slope and the degree of depth and synchronize retrusive and carry out pipe trench earth excavation, apply simultaneously clinometer, Infrared distance measurement device controls the ditching degree of depth, ratio of slope, bottom of trench absolute altitude；

The underlying direct-burried of d, pipeline, pipe trench earth excavation is until vacant state occurs in duct bottom, and the pipeline assembled is from gravity Potential energy effect under control in vertical plane, produce displacement downwards, it is achieved that duct section is the most underlying is layed in bottom of trench nature Stretch, use dynamic strain monitoring technology that duct section is conjugated underlying laying overall process, landfill, pressure testing, normal water delivery four simultaneously Planting the typical section weld seam interface under operating mode and carry out on-the-spot tracking dynamic test weld seam strain, construction completes.