CN207777770U - A kind of precast spliced pipe fitting jacking system - Google Patents

Abstract

A kind of precast spliced pipe fitting jacking system, including Zhu Ding mechanisms and the splicing pipeline that is arranged in the design path of design pipeline, splicing internal diameter of the pipeline are more than the outer diameter of design pipeline, and splicing pipeline is spliced by splicing pipe fitting；Splicing pipe fitting is stripe board, former and later two sides respectively it is corresponding protrude outward to form axial overlap edge, correspondence protrudes outward to form circumferentially overlapping side two sides in left and right respectively；Coaxial splicing pipe fitting splices along the axis of splicing pipeline upwardly through axial overlap edge successively, the ring along splicing pipeline of the splicing pipe fitting in same week splicing successively upwardly through circumferentially overlapping side, is fastened by connector.The construction method of the utility model passes through the assembled interim splicing pipeline in the design path of design pipeline, to excavate strong support is provided with jack-in process, by the way of artificial cooperation jacking construction of cutting the earth, execution conditions requirement common in jacking construction can be met.It can be widely applied to jacking construction.

Description

A kind of precast spliced pipe fitting jacking system

Technical field

The utility model is related to underground engineering field, especially a kind of jacking construction system.

Background technology

With the rapid development of science and technology, technical innovation plays important role in all trades and professions.For For building enterprise, undoubtedly a kind of opportunities and challenges.Wherein, jacking construction is as relatively common non-excavating construction method, It is a kind of piping laying construction technology do not excavated or excavated less, when open-cut is more difficult and cutting depth is more than under 5 meters When water level line is higher, it is suitable for non-excavating construction, i.e. pipe jacking construction technique, is mainly used in and excavates the larger pipeline work of difficulty Journey, such as sewage pipeline engineering, water supply and sewerage pipeline, natural gas petroleum pipeline, communication cable, it being capable of river crossing, tunnel, public affairs Any building such as road, railway, high mountain.Using pipe jacking construction technique, first, manpower can be saved by not excavating or excavating less, reduce The expense of earth clearance；Second is that not excavating or excavating less the disturbance reduced to the maximum extent to soil, atmosphere pollution can be reduced, Protect periphery natural ecological environment.

Currently, the unilateral side jacking of jacking construction generally use or both sides jacking, the control of generally use computer, laser guide control Preparation method control pipeline elevation and position of center line.For jacking construction as a kind of non-excavating construction method, it is by jacking device The top power of generation, overcomes the frictional force of pipeline and surrounding soil, and the gradient of pipe design is headed into soil, and popular says, is exactly After one section pipe jacking, next section pipe continues jacking.Its principle is pushed away by means of main top oil cylinder and pipeline enclosure, relay well etc. Power is always advanced to tool pipe or development machine in received well across soil layer out of active well and slings.Pipeline follow closely tool pipe or After development machine, it is embedded between two wells.Wherein, four kinds of pipe jacking construction techniques are relatively conventional, i.e., cutting edge propulsion working method, mud water type push away Into engineering method, soil pressure formula propulsion working method, the dense formula propulsion working method of mud.Cutting edge propulsion working method is opening medium-large caliber pipe propulsion working method, Other three kinds are hermetic type medium-large caliber pipe propulsion working method, and mud water type propulsion working method is by cutterhead and top speed balance front soil Pressure adjusts circulating water pressure balancing groundwater pressure, is handled without ground improvement or precipitation, after construction ground settlement compared with It is small；Soil pressure formula propulsion working method into cutting storehouse by injecting a certain proportion of mixing material so that the soil full of hopper dredger mixes Body balances earth balance pressure and groundwater pressure, and without rear portions corollary apparatus such as slush pumps, complete machine is cheap, and is not necessarily to mud Processing, construction cost are low；The dense formula propulsion working method of mud uses secondary grouting method, greatly reduces mill resistance, is suitble to push up over long distances Into.

Although above-mentioned tradition pipe jacking construction method high degree of automation, constructs in single geological conditions straight line jacking Speed is fast, pipeline elevation and position of center line precision are high.But this method needs pipe ends to have active well or a received well, and Pipeline elevation and position of center line precision control when encountering barrier during complex geological condition or bending line jacking and jacking Deviation processed is larger, or even can not continue jacking；It is especially very big in the deviation of pipe with small pipe diameter, needs constantly to adjust jacking side To and elevation, fine tuning number it is frequent, speed of application is slower；And in the initial propulsion stage, direction is mainly main top oil cylinder control, because This, on the one hand will slow down main top fltting speed, on the other hand constantly adjust oil cylinder marshalling and the correction of push pipe head.Sometimes mechanical The damage of push pipe head cannot work in jack-in process, and push pipe push pipe head is embedded in soil can not take out push pipe head, is needed Push pipe Handpiece Location takes out push pipe head after excavating shaft again.103090107 A patent disclosures of CN rectangle big cross section steel knot It is to support tube coupling instead of traditional prefabricated tube coupling of push pipe that structure assembly, which supports tube coupling jacking mechanism, advantage, reduces push pipe dead weight, The drawbacks of capable of effectively avoiding push pipe cannot being utilized to tunnel, but buried depth is restricted, and only applies construct in shallow embedding at this stage In.

Utility model content

The purpose of this utility model is to provide a kind of precast spliced pipe fitting jacking system, to solve complex condition push pipe and apply The technical problem that work efficiency rate is low, precision is low.

To achieve the above object, the utility model adopts the following technical solution：

A kind of precast spliced pipe fitting jacking system, including Zhu Ding mechanisms further include being set in the design path of design pipeline The splicing pipeline set, the splicing internal diameter of the pipeline are more than the outer diameter of design pipeline, and splicing pipeline is spliced by splicing pipe fitting 's；The splicing pipe fitting is stripe board, former and later two sides are corresponding respectively to be protruded outward to form axial overlap edge, left and right two Correspondence protrudes outward to form circumferentially overlapping side respectively for side；Coaxial splicing pipe fitting is along the axis of splicing pipeline upwardly through axial direction Overlap edge splices and is fastened by connector successively, and the ring along splicing pipeline for splicing pipe fitting with week is upwardly through circumferential direction Overlap edge splices and is fastened by connector successively.

The Zhu Ding mechanisms setting is in work bottom, including the postnotum being connected on active well side wall and vertical apical grafting Main top jack on postnotum, the front end of the Zhu Ding mechanisms are also associated with push pipe head.

The cross section of the splicing pipeline is round, the either more curve abnormity of polygon.

The material of the splicing pipe fitting is fiberglass or metal alloy.

The size for splicing the outer diameter that internal diameter of the pipeline is more than design pipeline described in jacking construction is 10~20cm.

The utility model has the characteristics that and advantageous effect compared with prior art：

The utility model devises a set of jacking system for jacking construction, design pipeline design path on assembly face When splicing pipeline, can by the way of artificial cooperation jacking construction of cutting the earth to excavate and jack-in process provides strong support To meet execution conditions requirement common in jacking construction：

The first, under normal condition, while being equipped with active well and received well, when natural conditions are preferable, may be used two-way It excavates, improves construction efficiency, splicing tube material is fiberglass, and processing performance is excellent, is had simple for process, one-time formed Feature, and glass-reinforced plastic material high-strength light, good corrosion resistance, prefabrication is high in machining efficiency, while with design pipeline jacking Splicing pipeline can be removed, assembled pipe fitting can continue cycling through utilization, and cost is relatively low.

Second, solves the construction problem in no received well, this method can be not provided with received well, uneasy at this time Fill push pipe head, due to splice pipeline special construction and material, the inorganic crown into when can reduce advance resistance, speed of application Soon, securely and reliably, suitable for wide popularization and application.

The third, splicing pipeline provides the effect of guiding and support for entire jack-in process, guarantee complex geologic conditions or Jacking construction pipeline elevation and position of center line have higher precision in the case of curved jacking, solve and are encountering barrier The problem of Shi Dingjin difficulties, the advantage that speed of application is fast, at low cost.

4th kind, when can solve middle push pipe head damage in design pipeline jack-in process, the case where not increasing vertical shaft Under, the problem of push pipe head is taken out, simultaneously assembled interim splicing pipeline is in addition excavated by received well, damages push-bench Head can be transported to received well along splicing pipeline and take out, and do not influence to work normally, will not be damaged to the soil body, securely and reliably It is efficient.

The utility model can be widely applied to jacking construction.

Description of the drawings

The utility model is described in more detail below in conjunction with the accompanying drawings.

Fig. 1 is the constructing structure schematic diagram of the utility model embodiment one.

Fig. 2 is the constructing structure schematic diagram of the utility model embodiment two.

Fig. 3 is the constructing structure schematic diagram of the utility model embodiment three.

Fig. 4 is the splicing structure schematic diagram of the utility model splicing section of jurisdiction.

Fig. 5 is the single chip architecture schematic diagram of the utility model splicing section of jurisdiction.

Reference numeral：1- active wells, 2- received wells, 3- Zhu Ding mechanisms, 4- splicings pipe fitting, 5- push pipes head, 6- design pipes Road, 7- connectors, 8- barriers.

Specific implementation mode

Embodiment is shown in Figure 1, this precast spliced pipe fitting jacking system, including Zhu Ding mechanisms 3, further includes along design The splicing pipeline being arranged in the design path of pipeline 6, the splicing internal diameter of the pipeline are more than the outer diameter of design pipeline 6, splice pipeline It is spliced by splicing pipe fitting 4.

Described in Fig. 5, the splicing pipe fitting 4 is stripe board, and correspondence protrudes outward to be formed respectively for former and later two sides Correspondence protrudes outward to form circumferentially overlapping side respectively for two axial overlap edge, left and right sides；Splicing shown in Figure 4, coaxial Pipe fitting 4 splices along the axis of splicing pipeline upwardly through axial overlap edge and is fastened by connector 7 successively, with the splicing in week The ring along splicing pipeline of pipe fitting 4 splices upwardly through circumferentially overlapping side and is fastened by connector successively.

Shown in Fig. 2, Fig. 3, the Zhu Ding mechanisms 3 are arranged in 1 bottom of active well, including are connected on active well side wall Main top jack on postnotum of postnotum and vertical apical grafting；The front end of the Zhu Ding mechanisms 3 is also associated with push pipe head.

The cross section of the splicing pipeline is round, the either more curve abnormity of polygon, the material of the splicing pipe fitting 4 For fiberglass or steel, aluminium alloy, hardness can meet surrounding soil pressure, and splicing internal diameter of the pipeline is more than described in jacking construction The size for designing the outer diameter of pipeline 6 is 10~20cm.

A kind of construction method of precast spliced pipe fitting jacking system described in application, is as follows：

Step 1, construction working well 1 and received well 2.

When construction working well, by the way of mechanical excavation, crane is promoted well head earth excavation；Digging process is according to a Pin One cycle installation of grid steel frame, two Pin grid steel frames, one cyclic spray concrete carry out；It should be along vertical shaft long axis direction point in excavation Duan Jinhang first excavates out a soil bucket lay down area, the earthwork at excavation is temporarily placed at the other end at one end；Soil bucket is promoted to adopt With diameter 1m, the steel cylinder of high 1.2m；Crane promotion is commanded by special messenger, while personnel answer extraction shaft in hoisting process Bottom.Fore shaft collar tie beam construction is carried out after to be done, survey crew first carries out the plan-position walling crib excavating sideline of fore shaft collar tie beam Positioning, because fore shaft collar tie beam construction stratum is not directed to underground water, so can be carried out collar tie beam construction in non-Dewatering well, Walling crib earth excavation mainly by the way of the construction of hand excavation's cooperative mechanical, waits for that machinery is excavated to apart from fore shaft circle projected depth Manual cleaning surplus earth, smooth compacting are used when 0.5m, and clears up leveling side wall, are avoided intrusion structure, are waited for manual cleaning base After the completion of face, reinforcing bar is processed and is bound, the hook length of stirrup and reinforcing rib is 10d, and the connection between main reinforcement uses The mode of binding is overlapped, the lap of splice is not less than 35d.Fore shaft ring beam reinforcing steel bar is bound in corresponding absolute altitude, in order to ensure that reinforcing bar is taken The requirement connect is vertically inserted into soil no less than using spiral across fore shaft collar tie beam after the completion of fore shaft ring beam reinforcing steel bar is bound 10d is arranged using blossom type, when in order to shaft excavation, the needs of Pin framves construction.Fore shaft circle is propped up after reinforcing bar binding Mould, fore shaft circle template use glued board, are bolted, and back up selects the lumps of wood and shelf pipe of 10 × 10cm of back up selection.It is vertical Concrete pad, then formwork erection are first added when mould, carrying out concrete to fore shaft collar tie beam to ensure thickness of protection tier, after formwork erection pours It builds, before pouring, checks whether template contral line position is accurate, horizontal, cross dimensions and headroom size meet design and want It asks；Construction in layer is wanted when placing concrete, setting sliding slot in construction stretches into template；Per one layer of placing, made firm by ramming with poker vibrator it is closely knit, It vibrates according to the principle of " fast insert is pulled out slowly "；When concrete is poured into a mould, station by Quality Inspector, builder and security official is arranged.Wait for concrete Intensity reaches form removal after requirement, and watering maintenance, when winter construction pay attention to keeping the temperature immediately after form removal, while in construction of working shaft It is preceding also to take effective Groundwater Control measure, to prevent from locally lying in the possibility of upper layer sealing.Fore shaft collar tie beam has been constructed Finish after concrete strength reaches requirement, that is, start the earthwork in excavation pit, the one side in collar tie beam lower part first digs 1.0m depths, installation Steel grating, vertical reinforcement make an entirety with Guan Liang.Then along crater wall in framework of steel reinforcement medial and lateral welding hanging double steel bar Mesh sheet.For mesh sheet connector all using binding, length is not less than a grid.Spacing is arranged in steel grating, under normal circumstances, is set per 0.5m One of steel grating.It punches in vertical shaft and locates three Pin grid solid matters of upper and lower.Borehole wall integral sinking is prevented, is excavated using diagonal, other Triangle supports, this angle is cut the earth, after installation steel grating, gunite concrete, then digs corresponding one jiao.Jetting cement thickness is 300mm, grade C25；Accelerator volume is the 3%~5% of cement weight；Mixture is stirred using blender, with mixing with not mixing Its resting period of the siccative of accelerator is not to be exceeded 1 hour.Spray shield operation should be layered, be segmented, Divisional carries out, and injection order is answered Bottom-up, spiral mobile in the horizontal direction, tactical diameter should be 300mm or so, and one circle of a circle pressure, each jetting height is not More than 0.5m, when injection, should not accumulate at one, it is desirable that injection is closely knit, must not leak muscle, it is desirable that the concrete surface after injection is flat It is whole, straight suitable.Whether checking tool, equipment are complete good before injection, and pipeline must not have dog leg when injection, and spray gun is under any circumstance Forbid to people.Injection worker must accomplish start when first blow, is switched on, is fed again again, at the end of wait expect sprayed after close wind again.To Jet pump is fed continuous uniform, and when machine runs well, enough material stocks are maintained in hopper.The operating pressure of spraying machine meets Pressure at nozzle is in 0.1Mpa.Nozzle is vertical with by spray plane holding, preferably keeps the distance of 0.6~1.0m, and when injection is controlled The ratio of mud.Batch position that connects of previous jetting cement is cleared up before injection every time, the soil on surface is removed, to ensure the close of joint part It is real.Working pit should successively construct downwards successively when constructing, and soil excavation, interior dowel, installs steel grating, is interior installation external net slice Dowel, interior mesh sheet, anchor spraying concrete.To ensure the stabilization of vertical shaft, in working shaft, quadrangle is vertically every twice steel grating One of angle brace is placed, to improve the resistance to capsizing and stability of vertical shaft, support is with digging with setting until vertical shaft bottom surface.For convenience of people Member up and down vertical shaft, in every vertical shaft be arranged for the upper and lower safety climbing ladder of personnel, access ladder construction is required according to atlas, height and Specification is 90cm according to atlas drawing requirement installation, cat ladder width, and cat ladder vertically every 3m designer's half spaces, is climbed Handrail is installed in terraced both sides, and handrail installation must securely facilitate.Cat ladder material selection steel plate and angle steel are built, when construction shaft need by Cat ladder built-in fitting is pre-buried in place.Shaft bottom uses 300 thickness C25 concrete ejections+steel grating, the 500 cast-in-place steel of thickness C40 water-tight concretes Tendon concrete structure reaches designed elevation, 1.3 × 1.3m is in working pit after shaft bottom arranges that shaft bottom grid, shotcrete are constructed Catch pit, catch pit use reinforced concrete structure, collect flow in working pit.It is laid with Double-layer threaded reinforced mesh, pours into a mould C40 Concrete 500mm is thick, ensures the hole smooth drying in bottom.Working shaft is set to form an entirety.At the same time, it is applied in progress active well Working hour is it is noted that safety problem.

After the completion of construction of working shaft, arrange that Zhu Ding mechanisms, mainly postnotum, guide rail, main top oil cylinder, oil pump are dynamic in well Power station, steel staircase etc..Push pipe pedestal is steel construction prefabricated components, and push pipe base position is accurately put by pipe design axis Sample hangs in underground and installs fixation in place according to the baseline of surveying and locating when installation.Guide rail on pedestal designs axis according to push pipe And be placed centrally by actual measurement portal center, and bracing reinforcement is set, it is indeformable to ensure that pedestal is stablized.Shaft excavation is to structural outer rim After substrate, back cover should be carried out in time.Vertical shaft shaft bottom is using the structure of " back cover grid+transverse and longitudinal dowel+casting concrete ", work Vertical shaft back cover bar-mat reinforcement is arranged cross using 22@150mm of bilayer φ, pours C30 concrete.Casting concrete and installation vertical shaft bottom Review elevation is had to before slab grid, welding, the casting concrete of steel grating could be carried out after accurate, silo bottom is applied Make heatable adobe sleeping platform and catch pit, waits for abolishing interim back cover after the completion of jacking.To ensure, enter the stabilization of openings position support construction Property, going out, entering two side step of hole to set 3 Ф of stiffener, 22 100mm, is stretching out hole length up and down and be not less than 1m.On vertical shaft hole Under the support of one of HW300 × 300 × 10 of each increase × 145mm disks, connection upper lower burrs support to form gate frame, to ensure that vertical shaft punches Place stablizes, and ensures that disk support is reliably welded with first lining grid.One layer of basis 20cm is spread in slot bottom C20 concrete, width is relatively rested the head on The long 50cm of wood, 20cm × 20cm sleepers, buried depth 13cm are buried in inside concrete.Sleeper length should be each longer than guide rail outer rim both sides Go out 30cm, spacing 40cm.The face of sleeper Transducers Embedded in Concrete needs packet malthoid.Guide rail selects No. 24 rail, and two guide rails are parallel, contour, The gradient and center line meet the requirements.Elevation is consistent with design conduit slope, is welded and fixed on the steel plate.（This part-structure is existing Have）

Step 2 is excavated forward in the design position of design pipeline 6 along design path：It is managed in design after the completion of active well The design position in road determines a tube bottom elevation and center line position using manually being excavated along duct orientation, per 50cm is excavated forward It sets, openings of sizes is determined according to splicing outer diameter tube.

Step 3, as pipeline is spliced in excavation construction assembly：Splice internal diameter of the pipeline slightly larger than design outer diameter tube, splicing tubes Part use glass steel material or other rigid materials, splicing pipe fitting block number can determine according to field condition, this example for three pieces, Fixation is bolted before contiguous concatenation pipe fitting.

Step 4 repeats step 2 and step 3 to splicing pipeline along design path assembly to received well：Assembly completes one The section splicing subsequent continuous excavation of pipeline then proceedes to assembled splicing pipeline, two adjacent sections forward and equally uses spiral shell before splicing pipeline Bolt is connected and fixed, until pipe design terminal.

Step 5, connection installation Zhu Ding mechanisms 3 and push pipe head 5 in the bottom of active well 1.

Splice the pipe fitting pipe laying jacking device in active well after the completion, back is installed first, the size of back passes through Calculating and setting is arranged before the lumps of wood and founds iron, piles up horizontal iron before vertical iron, and horizontal iron requires to pile up smooth, and top pick back seat is combined sternly with horizontal iron It is close, can top power equably be passed into back；Jacking hole back will have enough intensity and firmness, can be born in jack-in process The maximum force of jack；Parados surface will smooth out afterwards, and perpendicular to the axis of jacking pipeline, avoid generating it is eccentric by Pressure.Tool back plane will install main top equipment again perpendicular to pipe centerline, after installing afterwards, and main top jack is symmetrically arranged as 2, It is fixed on combination jack stand and makees integral hoisting.Every jack specification is consistent, travel synchronization, and oil circuit is in parallel, collective effect, Independent control valve is had, the range of stretching is less than oil cylinder stroke 10cm or so.Oil pump device is located at apart from main top thousand Nearby, and rain-proof shelter is arranged in jin top, and oil circuit installation is straight, reduces corner, connector is oil-proof, and the maximum working pressure (MWP) of oil pump is not Test run must be carried out after installing, is being pushed up equipped with indexs protective devices such as pressure limiting valve, overflow valve and pressure gauges more than 32kpa Into middle timing repair and maintenance, debug in time.The size and structure of push pipe head will meet the requirements, and be wanted before hanging in jacking hole Make detailed inspection.When crane unloads head, it is steady, slowly, avoid impact, collision, and commanded by special messenger, it is ensured that safety can It leans on.After head is placed on guide rail, measure the deviation of directivity and relative relief at the center of front and back end, and make a record, head with The contact surface of guide rail must be steady, identical.Tool pipe and development machine will be accurately positioned by design requirement, and both sides are symmetrical.Head must The equipment such as circuit, oil circuit, water route, mud channel and steerable system must be connected one by one, each component is connected firmly, and must not ooze Leakage, installation is correct, and carries out conscientiously inspection and trial operation to each subsystem.It is flat using muddy water when disposing earthwork transportation equipment Weigh push-bench, is passed through mud in a manner of hydraulic directly defeated with the output of the dredge pump of piping connection and with spoil disposal by-pass collar It is sent to surface mud sedimentation basin.During push pipe, either pipe is still appeared from working pit into hole, between pipe and hole all Must there are gaps, but gap must carry out closing, such as bad sealing, and underground water, thixotropic slurry and silt particle will be from the gaps In flow in hole, influence to cheat interior operation, the slump at hole can be caused when serious, is caused the accident, therefore hole must do sealing, sealing Method is to pour 300mm thickness concrete seepproof screens entering openings position, watertight rubber circle is installed on the outside of wall.δ is used among rubber ring =10mm steel plates are used as barrier and fixed rubber ring.Push pipe head disengaging working pit hole flows into muddy water in order to prevent, and ensures The thixotropic slurry of pressure injection will not be lost in jack-in process, it is necessary to install front wall sealing collar in advance, component part is pre-buried Flange chassis, rubber slab, keeper plate of steel, washer and bolt.Flange chassis is preliminarily embedded in concrete vertical shaft, and center is correct, and end face is flat It is whole, it firmly installs, the silk mouth safekeeping of bolt, cement mortar is preliminarily removed.First fill rubber slab when installation, rear steel loading pressing plate, then Upper gasket is simultaneously fastened with nut, it is made to prevent flow.Step 6, behind jacking height and the jacking direction of adjusting Zhu Ding mechanisms 3 Start jacking：Top power size is controlled when jacking, top power crosses conference and destroys pipeline.

Step 7, design pipeline 6 stop jacking along design path jacking received well.

Step 8, respectively by being removed in active well and received well and taking out Zhu Ding mechanisms 3 and push pipe head 5.

Step 9 completes entire construction to the surrounding cement injection of design pipeline 6：The caliber of splicing pipeline is that basis is set The choice of diameter of pipeline is counted, grouting amount will not be impacted not removing assembled pipeline.

In the step 2, unidirectionally excavated from active well to received well or from active well and received well simultaneously to intermediate double To excavation；In the step 7, with design pipeline jacking, the splicing pipeline before push pipe head is removed.

It is shown in Figure 1, a kind of precast spliced pipe fitting jacking system described in application without received well construction method, and it is upper It states unlike construction method, is to be directed to limited by place or its natural conditions, the case where received well can not be arranged in this example, has Steps are as follows for body：

Step 1, construction working well 1.

Step 2 is excavated forward in the design position of design pipeline 6 along design path.

Step 3, as pipeline is spliced in excavation construction assembly.

Step 4 repeats step 2 and step 3 extremely splicing pipeline to design path terminal.

Step 5, the connection installation Zhu Ding mechanisms 3 in the bottom of active well 1.

Step 6, adjust Zhu Ding mechanisms 3 jacking height and jacking direction after start jacking.

Step 7, design pipeline 6 to terminal, stop jacking along design path jacking.

Step 8 removes and takes out Zhu Ding mechanisms 3.

Step 9 completes entire construction to the surrounding cement injection of design pipeline 6.

It is shown in Figure 2, a kind of construction method when having a barrier of precast spliced pipe fitting jacking system described in application, What is different from the first embodiment is that this example is when it is curve to have barrier 8 or design path in the design path for designing pipeline, It is as follows：

Step 1, construction working well 1 and received well 2.

Step 2 is excavated forward in the design position of design pipeline 6 along design path.

Step 3, as pipeline is spliced in excavation construction assembly.

Step 4 repeats step 2 and step 3 to splicing pipeline along design path assembly to received well.

Step 5, connection installation Zhu Ding mechanisms 3 and push pipe head 5 in the bottom of active well 1.

Step 6, adjust Zhu Ding mechanisms 3 jacking height and jacking direction after start jacking.

Step 7 removes the splicing pipeline before push pipe head with design pipeline jacking.

Step 8, design pipeline 6 stop jacking along design path jacking received well.

Step 9, respectively by being removed in active well and received well and taking out Zhu Ding mechanisms 3 and push pipe head 5.

Step 10 completes entire construction to the surrounding cement injection of design pipeline 6.

It is shown in Figure 3, construction when a kind of push pipe head damage of the precast spliced pipe fitting jacking system described in application Method, what is different from the first embodiment is that be in this example in design pipeline jack-in process, push pipe head damage the case where, When mechanical breakdown or damage occur in jack-in process for head, conventional construction method can only increase a vertical shaft in Handpiece Location, Successively excavation supporting takes out head afterwards on earth, repair or replaces the subsequent continuous jacking of head, and due to head during precession with The soil body is in close contact, and head of changing planes after active well taking-up needs the time, and can destroy original soil structures during taking out, specifically Steps are as follows：

Step 1 is excavated along design path to push pipe heading from received well 2.

Step 2, as pipeline is spliced in excavation construction assembly.

Step 3 repeats step 1 and step 2 to splicing pipeline along design path assembly to push pipe Handpiece Location.

Step 4 removes push pipe head, and is transported to received well taking-up by splicing pipeline.

Step 5 transports new push pipe head by splicing pipeline, starts jacking after replacement.

Step 6 removes the splicing pipeline before push pipe head with design pipeline jacking.

Step 7, design pipeline 6 stop jacking along design path jacking received well.

Step 8, respectively by being removed in active well and received well and taking out Zhu Ding mechanisms 3 and push pipe head 5.

Step 9 completes entire construction to the surrounding cement injection of design pipeline 6.

The time that head takes out head of changing planes from active well is not only saved in this way, is improved work efficiency, and avoid The possibility that head destroys the soil body is taken out from active well, greatly reduces workload.

No received well jacking, while the pipeline elevation in complex geological condition and curved jacking may be implemented in the utility model And position of center line precision is high, speed of application is fast, has a clear superiority to the processing in jack-in process when head failure, and splices Pipe fitting is repeatable to be utilized, and cost is relatively low.

Claims (6)

1. a kind of precast spliced pipe fitting jacking system, including Zhu Ding mechanisms（3）, it is characterised in that：Further include along design pipeline（6） Design path on the splicing pipeline that is arranged, the splicing internal diameter of the pipeline is more than design pipeline（6）Outer diameter, splicing pipeline be by Splice pipe fitting（4）It is spliced；

The splicing pipe fitting（4）For stripe board, correspondence protrudes outward to form axial overlap edge, left and right respectively for former and later two sides Correspondence protrudes outward to form circumferentially overlapping side respectively for two sides；

Coaxial splicing pipe fitting（4）Splice successively upwardly through axial overlap edge along the axis of splicing pipeline and passes through connector Fastening, with the splicing pipe fitting in week（4）The ring along splicing pipeline splice successively upwardly through circumferentially overlapping side and pass through connection Part fastens.

2. precast spliced pipe fitting jacking system according to claim 1, it is characterised in that：The Zhu Ding mechanisms（3）Setting In active well（1）Bottom, including the main top of the postnotum being connected on active well side wall and vertical apical grafting on postnotum are very heavy Top.

3. precast spliced pipe fitting jacking system according to claim 1, it is characterised in that：The Zhu Ding mechanisms（3）Before End is also associated with push pipe head（5）.

4. precast spliced pipe fitting jacking system according to claim 1, it is characterised in that：The cross section of the splicing pipeline For round or polygon.

5. precast spliced pipe fitting jacking system according to claim 1, it is characterised in that：The splicing pipe fitting（4）Material Material is fiberglass or metal alloy.

6. precast spliced pipe fitting jacking system according to claim 1, it is characterised in that：The splicing internal diameter of the pipeline is more than Design pipeline（6）Outer diameter size be 10~20cm.