CN114060050A - Pipeline in-situ breaking and updating construction method - Google Patents
Pipeline in-situ breaking and updating construction method Download PDFInfo
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- CN114060050A CN114060050A CN202111384164.5A CN202111384164A CN114060050A CN 114060050 A CN114060050 A CN 114060050A CN 202111384164 A CN202111384164 A CN 202111384164A CN 114060050 A CN114060050 A CN 114060050A
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- slag
- well
- pipeline
- pipe
- equipment
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/11—Making by using boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
- E21D9/124—Helical conveying means therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
- F16L1/036—Laying or reclaiming pipes on land, e.g. above the ground in the ground the pipes being composed of sections of short length
Abstract
The invention provides a pipeline in-situ breaking and updating construction method, which comprises the following steps: carrying out construction preparation; constructing a working well; hoisting the pipe jacking equipment into an originating well, then installing the pipe jacking equipment, and then installing slag discharging equipment at the front end of the pipe jacking machine or in front of the pipe jacking machine; pushing the push bench forwards according to a planned route through a propelling device, pushing a new pipe joint while cutting an old pipeline by the push bench, forming a new pipeline in a reciprocating cycle, and simultaneously discharging slag rocks forwards through a receiving well and/or an old well through slag discharging equipment; the push bench is ejected out of the receiving well; after pipe jacking equipment and slag discharging equipment are dismantled and hoisted out, an inspection well is built at the position of an originating well and a receiving well; the invention adopts a forward deslagging mode, saves the arrangement space of pipe jacking equipment and the action space of an originating well compared with the prior art, does not need to inject slurry into a pipeline, and can effectively control the deformation of the earth surface when being applied to the working condition that the old pipe is shallow in earth covering.
Description
Technical Field
The invention relates to the technical field of underground pipeline breaking and updating, in particular to a pipeline in-situ breaking and updating construction method.
Background
When urban underground waste pipelines are updated, an open cut construction mode is usually adopted, however, the pipeline construction by adopting the open cut method has low construction efficiency and can cause great influence on the surrounding environment in the construction process.
In view of the above problems, a common solution at present is to design a new method for updating a construction system of a trenchless pipeline, for example, a trenchless pipeline updating method and a construction system disclosed in chinese patent application with application publication No. CN111810715A, comprising the following steps: guiding the medium in the pipe of the non-construction section; constructing an initial well and a receiving well at two ends of a construction section; plugging two ends of the construction section, and grouting the pipeline in the construction section to ensure that the pipe-jacking construction is in a mud-water balance state; assembling a pipe jacking machine and rear supporting equipment (the pipe jacking machine and the rear supporting equipment form the pipe jacking equipment) in the originating well to finish the hole outlet of the pipe jacking machine; cutting and tunneling construction of an original pipeline (namely an old pipeline) and pushing and laying of a new pipe joint are circularly carried out through a pipe jacking machine to form a new pipeline and complete the entry of the pipe jacking machine into a hole; dismantling and hoisting the pipe jacking equipment; and finally, butting and conducting the old pipeline and the new pipeline.
In the process of updating the pipeline in the patent, grouting needs to be performed in the pipeline in a construction section, so that the pipe-jacking construction is in a mud-water balance state, and the method is suitable for the working condition that the old pipeline is deeply covered with soil, but when the old pipeline is slightly covered with soil, the old pipeline is replaced in a mud-water balance mode, the phenomenon of grout bleeding is easy to generate, and the deformation of the earth surface is difficult to control; in addition, in the above patent, the broken slag generated after cutting the old pipeline is discharged through the originating well by the slurry circulation device (i.e. slag discharging device), and the slag discharging device is required to discharge the waste slag through the pipe jacking device and the originating well, which results in that the slag discharging device occupies a large amount of space for arranging the pipe jacking device and the originating well.
Disclosure of Invention
The invention aims to provide a pipeline in-situ breaking and updating construction method, which aims to solve the problems that when the old pipeline is shallow in soil covering, the earth surface deformation is difficult to control by adopting a mud-water balance mode, and slag discharging equipment occupies a large amount of arrangement space of pipe jacking equipment and initial well space due to backward slag discharging during construction.
In order to achieve the purpose, the pipeline in-situ breaking and updating construction method adopts the following technical scheme:
a pipeline in-situ breaking and updating construction method comprises the following steps:
step one, construction preparation: determining an in-situ breaking and updating construction section of the pipeline;
step two, construction of a working well: the working well comprises an originating well and a receiving well, and the construction of the working well is carried out after the positions of the originating well and the receiving well are determined;
step three, equipment installation: the equipment to be installed comprises pipe jacking equipment and slag discharging equipment, wherein a propelling device of the pipe jacking equipment and a pipe jacking machine are installed after being hoisted into an originating well, and then the slag discharging equipment is installed at the front end of the pipe jacking machine or arranged in front of the pipe jacking machine;
step four, jacking construction: pushing the push bench forwards according to a planned route by a propelling device, pushing a new pipe joint while cutting an old pipeline by the push bench, forming a new pipeline in a reciprocating cycle, and simultaneously discharging slag stones generated by cutting the old pipeline forwards through a receiving well and/or an old well between an originating well and the receiving well by a slag discharge device;
step five, receiving by the push bench: the push bench is ejected out of the receiving well, and the hole ring is sealed;
step six, constructing an inspection well: and (4) after the pipe jacking equipment and the slag discharging equipment are dismantled and hoisted out, constructing an inspection well at the positions of the starting well and the receiving well.
The beneficial effects of the above technical scheme are that: in the pipeline in-situ removal and updating construction process, when the equipment in the third step is installed, the slag discharging equipment is installed at the front end of the push bench or is arranged in front of the push bench, and when the equipment in the fourth step is constructed, slag stones are discharged forwards through the receiving well and/or an old well between the starting well and the receiving well through the slag discharging equipment, namely, the slag discharging equipment adopts a forward slag discharging mode, so that the arrangement space of the push bench and the action space of the starting well are saved compared with the prior art; in addition, the construction method of the invention does not need to inject slurry into the pipeline, and can effectively control the deformation of the earth surface when being applied to the working condition that the old pipe is covered with shallow soil.
Furthermore, in the third step, a cutter head at the front end of the main machine of the push bench is used for cutting the old pipeline, and at least a conveying device arranged in front of the main machine is used as slag discharging equipment; when the equipment is installed, the fixed main body of the conveying device penetrates through the cutter head and is fixedly connected with the host machine, so that the rear end of the conveying component of the conveying device is arranged in the soil bin at the rear side of the cutter head to receive the slag stone which falls off from the slag sliding plate on the cutter head; the slag stone cut by the cutter head is blocked between the slag blocking device and the cutter head by the slag blocking device which is fixed on the fixed main body and positioned in front of the cutter head, so that the slag stone enters the soil bin through the slag inlet on the cutter head.
The beneficial effects of the above technical scheme are that: the slag discharging is convenient by adopting the conveying device, the fixing main body of the conveying device penetrates through the cutter head and is fixedly connected with the host, the fixing of the conveying device is realized, and meanwhile, the rear end of the conveying component of the conveying device is arranged in the soil bin at the rear side of the cutter head, so that the slag stones falling from the slag sliding plate on the cutter head can be conveniently received, and further, the slag stones can be conveniently conveyed forwards. Simultaneously, the slag stone cut by the cutter head is blocked between the slag blocking device and the cutter head by the slag blocking device which is fixed on the fixed main body and positioned in front of the cutter head, so that the slag stone enters the soil bin through a slag inlet on the cutter head, and the slag stone is effectively discharged.
Further, the conveying device and the slag conveying trolley are used as slag discharging equipment, and the slag conveying trolley is used for receiving and storing slag stones discharged by the conveying device.
The beneficial effects of the above technical scheme are that: the slag conveying trolley can receive and store slag stones discharged by the conveying device, and the slag conveying trolley is matched with the conveying device to discharge the slag stones.
Further, when the slag-transporting trolley passes through the old well, the slag stones are discharged from the old well.
The beneficial effects of the above technical scheme are that: need not to set up too big fortune sediment dolly, conveniently arrange and remove.
Furthermore, the conveying devices are arranged into a plurality of sections, and the fixed main bodies of two adjacent sections of conveying devices and the conveying components are detachably connected, so that the conveying devices directly penetrate through the old pipeline and extend into the receiving well.
The beneficial effects of the above technical scheme are that: the conveying device directly penetrates through the old pipeline to extend to the receiving well, can directly discharge the slag to the receiving well, and then is easy to discharge from the receiving well.
Further, a plurality of support devices for supporting the transport device are fixed outside the fixing body.
The beneficial effects of the above technical scheme are that: the stability of the conveying device can be improved.
Further, the conveying device and a suction pipe arranged in front of the conveying device are used as slag discharging equipment, and slag stones discharged by the conveying device are pumped out of an old pipeline by using the suction pipe.
The beneficial effects of the above technical scheme are that: the suction pipe is used for pumping out the slag stones discharged by the conveying device, and the slag discharge is convenient.
Furthermore, a screw shaft with screw blades is adopted as a conveying component of the conveying device, the screw shaft is in transmission connection with a host, and the screw shaft is driven to rotate by the host; a cylinder is used as a fixed main body of the conveying device, and an upward feeding hole is formed in the part, in the soil bin, of the cylinder.
The beneficial effects of the above technical scheme are that: the spiral conveying slag discharging device is convenient to use and also convenient for the fixed installation of the slag blocking device.
Furthermore, in the third step, a high-pressure water pipe arranged at the front end of the pipe jacking machine is used as a slag discharging device, and slag stones are flushed into the receiving well through high-pressure water sprayed out of the high-pressure water pipe.
The beneficial effects of the above technical scheme are that: the high-pressure water sprayed by the high-pressure water pipe directly washes the slag stone into the receiving well, and the device is simple in structure and convenient to operate.
And further, in the third step, a suction pipe arranged in front of the push bench is used as slag discharge equipment, and slag generated by cutting the old pipeline by the push bench is directly pumped out of the old pipeline by the suction pipe.
The beneficial effects of the above technical scheme are that: the slag discharging equipment is simple and convenient to arrange.
Drawings
FIG. 1 is a schematic diagram of a construction preparation state of a first embodiment of a pipeline in-situ breaking and renewing construction method according to the present invention;
FIG. 2 is a schematic diagram of a working well construction state according to a first embodiment of the pipeline in-situ breaking and renovating construction method of the invention;
FIG. 3 is a schematic view illustrating an installation state of equipment according to a first embodiment of the pipeline in-situ breaking and renovating construction method of the invention;
FIG. 4 is a front view of a partial structure of a push bench, a conveying device and a slag-transporting trolley in the embodiment of the pipeline in-situ breaking and updating construction method;
FIG. 5 is a cross-sectional view of a portion of a slag pan of a push bench according to an embodiment of the pipe in-situ breaking and renewing construction method of the present invention;
FIG. 6 is a schematic diagram of a jacking construction state of a first embodiment of the pipeline in-situ breaking and renewing construction method according to the present invention;
FIG. 7 is a schematic diagram of a receiving state of a jacking pipe according to a first embodiment of the pipeline in-situ breaking and updating construction method;
FIG. 8 is a schematic diagram illustrating a construction state of an inspection well according to a first embodiment of the in-situ pipeline breaking and renovating construction method of the invention;
FIG. 9 is a schematic diagram of a new well construction status according to a first embodiment of the pipeline in-situ breaking and renovation construction method of the invention;
FIG. 10 is a schematic view illustrating an installation state of a second apparatus according to a second embodiment of the in-situ pipeline demolition renewal construction method of the present invention;
FIG. 11 is a schematic view illustrating an installation state of a third apparatus according to a third embodiment of the in-situ pipeline demolition renewal construction method of the present invention;
FIG. 12 is a schematic diagram of a jacking construction state of a fourth embodiment of the pipeline in-situ breaking and renewing construction method according to the present invention;
FIG. 13 is a schematic view showing an installation state of a fifth apparatus according to the fifth embodiment of the in-situ pipeline demolition renewal construction method of the present invention;
fig. 14 is a schematic diagram of a jacking construction state of a fifth embodiment of the pipeline in-situ breaking and renewing construction method according to the present invention.
In the figure: 1. an old pipeline; 2. an old well; 3. an originating well; 4. a receiving well; 5. a propulsion cylinder; 6. a conveying device; 6-1, fixing the main body; 6-2, a conveying component; 7. a slag conveying trolley; 8. a support device; 9. a high pressure water pipe; 10. a new pipe section; 11. slag stones; 12. the pipe section can be disassembled; 13. an inspection well; 14. a new well; 15. a vacuum pump; 16. a pipe jacking machine; 16-1, a host; 16-2, a cutter head; 16-3, a soil bin; 16-4, a slag chute; 17. a slag stopping device; 17-1, a baffle seat; 17-2, a movable baffle; 18. a suction pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
An embodiment 1 of the pipeline in-situ breaking and renewing construction method (hereinafter referred to as a construction method) in the present invention is shown in fig. 1 to 9, and includes the following steps:
step one, construction preparation: as shown in fig. 1, the old pipeline 1 is determined to break and update the construction section in situ, and the sewage at two ends in the pipeline of the non-construction section is guided.
Step two, construction of a working well: as shown in fig. 2, the working well comprises an originating well 3 and a receiving well 4, and after the originating well 3 and the receiving well 4 are located, the originating well 3 and the receiving well 4 are constructed. In order to reduce the influence of construction on the surrounding environment, simplify the construction process of a working well and reduce the construction cost, the starting well 3 and the receiving well 4 are constructed by adopting a steel casing sinking method on the basis of the old well 2, the steel casing sinking is the prior art, and the detailed description is omitted here.
Step three, equipment installation: as shown in fig. 3, the equipment to be installed comprises a pipe jacking equipment and a slag discharging equipment, wherein the pipe jacking equipment comprises a propelling device and a pipe jacking machine 16, the propelling device comprises a propelling cylinder 5 for propelling the pipe jacking machine 16 to advance and a cylinder valve (not shown in the figure) for controlling the propelling cylinder 5 to act. As shown in figure 4, a cutter head 16-2 is mounted at the front end of a main machine 16-1 of a push bench 16, the cutter head 16-2 is used for cutting an old pipeline 1, a soil bin 16-3 is arranged at the rear side of the cutter head 16-2, and a slag inlet for allowing slag stones to enter the soil bin 16-3 is formed in the cutter head 16-2. A slag chute 16-4 is fixed on the cutter head 16-2, and the slag chute 16-4 is positioned in the soil bin 16-3 and synchronously rotates with the cutter head 16-2 for taking up the slag stone upwards as shown in figure 5.
The slag discharging equipment comprises a conveying device 6 arranged in front of the main machine 16-1 and a slag conveying trolley 7 arranged at the front end of the conveying device 6, wherein the slag conveying trolley 7 is used for receiving and storing slag stones discharged by the conveying device 6. The conveying device 6 comprises a fixed main body 6-1 and a conveying component 6-2, the conveying device 6 in the embodiment is a spiral conveyor, namely a cylinder is used as the fixed main body 6-1, and an upward feeding hole is formed in the part, in the soil bin, of the cylinder. The screw shaft with the helical blades is adopted as the conveying component 6-2, the screw shaft is in transmission connection with the main machine 16-1, the main machine 16-1 drives the screw shaft to rotate, therefore, a driving device for driving the cutter head and the screw shaft to rotate is arranged in the main machine 16-1, the driving device can be a planetary gear mechanism, for example, the cutter head is in transmission connection with an outer gear ring of the planetary gear mechanism, the screw shaft is in transmission connection with a sun gear of the planetary gear mechanism, a planet carrier of the planetary gear mechanism is a braking element, and a fixed main body is fixedly connected with the planet carrier, so that synchronous rotation of the cutter head and the screw shaft can be realized, and the form is similar to the driving form in CN 104265998A. Of course, the driving devices can be two sets and are independent of each other, and are used for independently driving the screw shaft and the cutter head to rotate.
When the equipment is installed, the fixed main body 6-1 of the conveying device 6 penetrates through the cutter head 16-2 and is fixedly connected with the main machine 16-1, so that the rear end of the conveying component 6-2 of the conveying device 6 is arranged in the soil bin 16-3 at the rear side of the cutter head 16-2 to receive the slag stones which are brought up by the slag chute 16-4 and fall down. Meanwhile, as shown in fig. 3, the slag stones cut off by the cutterhead 16-2 are blocked between the slag blocking device 17 and the cutterhead 16-2 by the slag blocking device 17 which is fixed on the fixed main body 6-1 and is positioned in front of the cutterhead 16-2, so that the slag stones can enter the soil bin 16-3 through a slag inlet on the cutterhead 16-2. Specifically, as shown in fig. 4, the slag trap 17 includes a plurality of flapper seats 17-1 fixed to the outside of the fixed body 6-1 and a plurality of movable flapper 17-2 hinged to the flapper seats 17-1, and an elastic member, such as a torsion spring, is provided between the movable flapper 17-2 and the flapper seat 17-1 to elastically press the movable flapper 17-2 against the inner wall of the old pipe 1.
Step four, jacking construction: as shown in fig. 6, the push bench 16 is pushed forward along the planned route by controlling the cylinder valve, and the push bench 16 cuts the old pipeline 1 and simultaneously pushes the new pipe joint 10, and the new pipeline is formed by reciprocating circulation. When the push bench 16 is pushed in, the cutter head 16-2 cuts the old pipeline 1, as shown in fig. 4 and 5, the slag stone 11 generated by cutting the old pipeline 1 firstly enters the soil bin 16-3, the slag slide 16-4 rotates to drive the slag stone 11 to rotate, when the slag slide 16-4 moves to the position above the feeding hole of the fixed main body 6-1, the slag stone 11 enters the fixed main body 6-1 along the slag slide 16-4 due to a certain inclination angle of the slag slide 16-4, and is transported to the slag transport trolley 7 along with the rotation of the screw shaft, and when the slag transport trolley 7 passes through the old well 2 or the receiving well 4, the slag stone 11 is discharged.
Step five, receiving the jacking pipe: as shown in fig. 7, push bench 16 is ejected at receiving well 4 to seal the aperture.
Step six, constructing an inspection well 13: as shown in fig. 8, after the pipe jacking equipment and the slag discharging equipment are removed and hoisted out, an inspection well 13 is built at the positions of the originating well 3 and the receiving well 4;
after the manhole 13 is built, the abandoned old well 2 is backfilled. In addition, as shown in fig. 9, when a new well 14 needs to be built between two inspection wells 13 according to the planning requirement, in the step four jacking construction process, as shown in fig. 7, a detachable pipe section 12 is installed in the new pipeline at a position corresponding to the planned new well 14, and specifically, the detachable pipe section 12 is detachably connected with the adjacent new pipe section 10 through a flange. When a new well 14 is being constructed, the removable pipe sections 12 are removed.
The invention adopts a forward deslagging mode, and saves the arrangement space of the pipe jacking equipment and the action space of the starting well compared with the prior art; in addition, the construction method of the invention does not need to inject slurry into the pipeline, and can effectively control the deformation of the earth surface when being applied to the working condition that the old pipe is covered with shallow soil.
Fig. 10 shows an embodiment 2 of the pipeline in-situ breaking and renovating construction method according to the present invention, which is different from the embodiment 1 in that in the second embodiment, the conveying devices 6 are provided in multiple sections, and the fixed bodies and the conveying components of two adjacent sections of conveying devices 6 are detachably connected to each other, so that the multiple sections of conveying devices 6 directly extend into the receiving well 4 through the old pipeline 1. Because conveyor 6 is longer, in order to improve stability, a plurality of strutting arrangement 8 that are used for carrying out the support to conveyor 6 are fixed in conveyor 6's fixed main part outside, and strutting arrangement 8 specifically can be including articulating the bracing piece in fixed main part outside, is connected with the spring between bracing piece and the fixed main part to make the tip elasticity roof pressure of bracing piece on the inner wall of old pipeline 1.
During jacking construction, slag is directly discharged into the receiving well 4, and after one section of conveying device 6 enters the receiving well 4, the conveying device is dismantled, so that the follow-up conveying device 6 can continue to advance.
As shown in fig. 11, an embodiment 3 of the pipe in-situ breaking and renovating construction method according to the present invention is different from the embodiments 1 and 2 in that the slag discharging facility includes a high-pressure water pipe 9 installed at the front end of the pipe pushing jack 16, and the slag stone 11 is flushed into the receiving well 4 by high-pressure water jetted from the high-pressure water pipe 9 during the pushing construction.
As shown in fig. 12, an embodiment 4 of the in-situ duct-breaking and renovating construction method according to the present invention is different from embodiment 1 in that the conveying device 6 and the suction pipe 18 provided in front of the conveying device 6 are used as slag discharging facilities, and the slag discharged from the conveying device 6 is sucked out of the old duct 1 by using the suction pipe 18.
As shown in fig. 13 and 14, an embodiment 5 of the pipe in-situ breaking and renovating construction method of the invention is different from the embodiment 4 in that a suction pipe 18 arranged in front of a pipe pushing jack 16 is directly used as a deslagging device, when the device is installed, a vacuum pump 15 connected with the suction pipe 18 is arranged on the ground, and the suction pipe 18 extends into an old pipe 1 through an old well 2 or a receiving well 4 and extends to the front side of the pipe pushing jack 16. During jacking construction, the slag 11 is pumped out through the suction pipe 18, and for convenience of construction, the vacuum pump 15 continuously moves forwards along with jacking of the pipe jacking machine 16, and meanwhile, the suction pipe 18 extends into the old pipeline 1 through the old well 2 or the receiving well 4 which is closer to the receiving well 4.
In other embodiments of the pipeline in-situ breaking and renovation construction method, the old well is backfilled by other backfilling materials instead of the slag collected in the construction process.
In other embodiments of the pipeline in-situ breaking and updating construction method, when a new well is built according to the planning requirement, in the jacking construction process in the fourth step, a detachable pipe joint is not arranged at the position, corresponding to the planned new well, in the new pipeline, and when the new well is built, the pipe joint at the position is cut.
In other embodiments of the pipeline in-situ removal and updating construction method, if the position between the two inspection wells is closer to meet the planning requirement, a new well does not need to be built.
In other embodiments of the pipeline in-situ breaking and renewing construction method, in the second step, the steel casing sinking method is not adopted for the construction of the originating well and the receiving well, and other construction methods are selected according to the construction environment.
In other embodiments of the pipeline in-situ breaking and renovating construction method, when the conveying device is a plurality of sections extending directly into the receiving well, the supporting device may not be fixed outside the fixed main body.
In other embodiments of the pipeline in-situ breaking and updating construction method, when the slag discharging equipment comprises the slag conveying trolley, if the capacity of the slag conveying trolley is large, the slag conveying trolley can reach the receiving well and uniformly discharge the slag stones during jacking construction.
In other embodiments of the pipeline in-situ breaking and renewing construction method, the conveying device may also be a belt conveyor, in which case the fixed main body is a frame and the conveying component is a conveying belt, and the conveying component does not need to be in transmission connection with the host machine.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (10)
1. A pipeline in-situ breaking and updating construction method is characterized by comprising the following steps:
step one, construction preparation: determining an in-situ breaking and updating construction section of the pipeline;
step two, construction of a working well: the working well comprises an originating well (3) and a receiving well (4), and the construction of the working well is carried out after the positions of the originating well (3) and the receiving well (4) are determined;
step three, equipment installation: the equipment to be installed comprises pipe jacking equipment and slag discharging equipment, wherein a propelling device of the pipe jacking equipment and a pipe jacking machine (16) are installed after being hoisted into the starting well (3), and then the slag discharging equipment is installed at the front end of the pipe jacking machine (16) or is arranged in front of the pipe jacking machine (16);
step four, jacking construction: pushing a push bench (16) forwards according to a planned route through a propelling device, simultaneously pushing a new pipe joint (10) while the push bench (16) cuts an old pipeline (1), forming a new pipeline in a reciprocating circulation manner, and simultaneously discharging slag stones generated by cutting the old pipeline (1) forwards through a receiving well (4) and/or an old well (2) positioned between an originating well (3) and the receiving well (4) through a slag discharging device;
step five, receiving by the push bench (16): the push bench (16) is ejected out of the receiving well (4) to seal the hole ring;
constructing an inspection well (13): and (3) after the pipe jacking equipment and the slag discharging equipment are dismantled and hoisted out, an inspection well (13) is built at the positions of the originating well (3) and the receiving well (4).
2. The pipeline in-situ breaking and renewing construction method according to claim 1, wherein in the third step, the old pipeline (1) is cut by using a cutter head (16-2) at the front end of a main machine (16-1) of the pipe pushing jack, and at least a conveying device (6) arranged in front of the main machine (16-1) is used as slag discharging equipment; when the equipment is installed, a fixed main body (6-1) of the conveying device (6) penetrates through the cutter head (16-2) and is fixedly connected with the main machine (16-1), so that the rear end of a conveying component (6-2) of the conveying device (6) is placed in a soil bin (16-3) at the rear side of the cutter head (16-2) to receive slag stones which are brought up by a slag chute (16-4) on the cutter head (16-2) and fall down; slag stones cut by the cutter head (16-2) are blocked between the slag blocking device (17) and the cutter head (16-2) by the slag blocking device (17) which is fixed on the fixed main body (6-1) and positioned in front of the cutter head (16-2), so that the slag stones can enter the soil bin (16-3) through a slag inlet on the cutter head (16-2).
3. The pipeline in-situ breaking and renovating construction method according to claim 2 is characterized in that the conveying device (6) and the slag-transporting trolley (7) are used as slag-discharging equipment, and the slag-transporting trolley (7) is used for receiving and storing slag stones discharged by the conveying device (6).
4. The pipeline in-situ breaking and renovation construction method according to claim 3 is characterized in that the slag is discharged from the old well (2) when the slag-transporting trolley (7) passes through the old well (2).
5. The pipeline in-situ breaking and renewing construction method according to claim 2, wherein the conveying devices (6) are arranged in a plurality of sections, and the fixed bodies (6-1) and the conveying parts (6-2) of two adjacent sections of the conveying devices (6) are detachably connected, so that the plurality of sections of the conveying devices (6) directly extend into the receiving well (4) through the old pipeline (1).
6. The pipe break-in-place rehabilitation method according to claim 5, characterized in that a plurality of supporting means (8) for supporting the transportation means (6) are fixed outside the fixing body (6-1).
7. The pipeline in-situ replacement construction method according to claim 2, wherein the conveying device (6) and a suction pipe (18) arranged in front of the conveying device (6) are used as slag discharging equipment, and the slag discharged from the conveying device (6) is pumped out of the old pipeline by using the suction pipe (18).
8. The pipeline in-situ breaking and renewing construction method according to any one of claims 2 to 7, wherein a screw shaft with a screw blade is adopted as a conveying component of a conveying device, the screw shaft is in transmission connection with a main machine, and the main machine drives the screw shaft to rotate; a cylinder is used as a fixed main body of the conveying device, and an upward feeding hole is formed in the part, in the soil bin, of the cylinder.
9. The pipeline in-situ breaking and renovating construction method as claimed in claim 1, wherein in the third step, a high-pressure water pipe (9) installed at the front end of the pipe jacking machine (16) is used as a slag discharging device, and slag is flushed into the receiving well (4) by high-pressure water sprayed from the high-pressure water pipe (9).
10. The pipeline in-situ breaking and renewing construction method according to claim 1, wherein in the third step, a suction pipe (18) arranged in front of the pipe pushing jack (16) is used as a slag discharging device, and the slag generated by cutting the old pipeline by the pipe pushing jack is directly pumped out of the old pipeline by using the suction pipe (18).
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| CN202111384164.5A CN114060050A (en) | 2021-11-19 | 2021-11-19 | Pipeline in-situ breaking and updating construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060053A (en) * | 2021-11-19 | 2022-02-18 | 中铁工程装备集团有限公司 | Pipeline updating heading machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060053A (en) * | 2021-11-19 | 2022-02-18 | 中铁工程装备集团有限公司 | Pipeline updating heading machine |
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