CN112031788A - Water jet flow breaking-in and expanding heading machine and construction method thereof - Google Patents
Water jet flow breaking-in and expanding heading machine and construction method thereof Download PDFInfo
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- CN112031788A CN112031788A CN202011034012.8A CN202011034012A CN112031788A CN 112031788 A CN112031788 A CN 112031788A CN 202011034012 A CN202011034012 A CN 202011034012A CN 112031788 A CN112031788 A CN 112031788A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 120
- 238000010276 construction Methods 0.000 title claims abstract description 14
- 239000011435 rock Substances 0.000 claims abstract description 55
- 238000009412 basement excavation Methods 0.000 claims abstract description 53
- 230000007246 mechanism Effects 0.000 claims abstract description 53
- 230000005641 tunneling Effects 0.000 claims abstract description 34
- 239000002893 slag Substances 0.000 claims abstract description 25
- 238000007599 discharging Methods 0.000 claims abstract description 12
- 238000001125 extrusion Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 10
- 239000000725 suspension Substances 0.000 claims description 10
- 239000002689 soil Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 4
- 238000010079 rubber tapping Methods 0.000 claims 1
- 230000009471 action Effects 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 3
- 230000009172 bursting Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D9/01—Methods or apparatus for enlarging or restoring the cross-section of tunnels, e.g. by restoring the floor to its original level
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/30—Auxiliary apparatus, e.g. for thawing, cracking, blowing-up, or other preparatory treatment of the soil
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
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Abstract
The invention discloses a water jet flow breaking-in and expanding heading machine and a construction method thereof, which solve the problem of low working efficiency of breaking-in and expanding excavation of an original pipeline in the prior art. The invention comprises a tunneling host and rear corollary equipment, wherein the front end of the tunneling host is provided with an expanding excavation cutter head, the expanding excavation cutter head is connected with a main drive arranged in the tunneling host, the expanding excavation cutter head is provided with a pipeline breaking and dismantling device, the pipeline breaking and dismantling device and/or the expanding excavation cutter head is provided with a water jet rock breaking mechanism, the water jet rock breaking mechanism is connected with a high-pressure water system, and the expanding excavation cutter head corresponds to a slag discharging system. According to the invention, the water jet rock breaking mechanism of the pipeline breaking and dismantling device is used for carrying out the prior breaking and removal of the suspended cutting water jet rock breaking on the original pipeline, and the expanding and excavating cutter disc and water jet rock breaking mechanism is used for carrying out the post expanding of the extrusion water jet rock breaking on the original pipeline tunnel, so that the one-step forming of breaking and expanding is completed, the rock breaking efficiency is high, and the construction efficiency is greatly improved.
Description
Technical Field
The invention relates to the technical field of pipeline expanding excavation, in particular to a water jet flow breaking and expanding heading machine and a construction method thereof.
Background
With the rapid development of urbanization, the original pipeline diameter no longer meets the requirements, the old pipeline needs to be dismantled, expanded and dug and re-laid, and many underground sewage pipelines leak due to aging, so that the pipelines need to be replaced with new pipelines urgently.
When a common pipe bursting method is used for breaking a pipeline, a pipe bursting tool is used for breaking an old pipe, the fragments of the pipeline are extruded to the surrounding soil layer, and a new pipe is pushed into the old pipe at the same time. In addition, the existing expanding excavation device, such as a modularized variable-diameter expanding excavation TBM cutter head with application number CN201910540619.4, redesigns the cutter head to achieve the purpose of expanding excavation, increases production investment, and the high-pressure water assisted rock breaking system and the construction method for the tunnel boring machine with application number CN110454185A adopt a high-pressure water jet mode to improve rock breaking efficiency, but the application range is limited, and the integration of breaking, dismantling and expanding excavation cannot be realized, so that the construction efficiency is low.
Therefore, aiming at the problems of low crushing efficiency, high construction cost, high requirement on the stratum and the like of pipeline crushing devices in the market, a novel development machine for pipeline dismantling and expanding is developed, the novel development machine can be used for simultaneously dismantling and expanding pipelines, and is necessary for expanding various original pipelines.
Disclosure of Invention
Aiming at the defects in the background technology, the invention provides a water jet flow breaking and expanding heading machine and a construction method thereof, which solve the problem of low working efficiency of breaking and expanding excavation of the original pipeline in the prior art.
The technical scheme of the invention is realized as follows: the water jet flow breaking-in and expanding-diameter tunneling machine comprises a tunneling host and a rear matched device, wherein a digging expansion cutter disc is arranged at the front end of the tunneling host and is connected with a main drive arranged in the tunneling host, a pipeline breaking-in device is arranged on the digging expansion cutter disc, a water jet flow rock breaking mechanism is arranged on the pipeline breaking-in device and/or the digging expansion cutter disc, the water jet flow rock breaking mechanism is connected with a high-pressure water system, and the digging expansion cutter disc corresponds to a slag discharging system.
The reaming cutter head comprises a cutter head main body, a mounting groove hole is formed in the center of the cutter head main body, and the pipeline breaking and dismantling device is arranged in the mounting groove hole and extends forwards out of the cutter head main body; and a first stirring rod and an excavation cutter are arranged on the front end face of the cutter head main body.
The pipeline breaking and dismantling device comprises a driving device and a suspension cutting arm, the driving device is fixed on the expanding and digging cutter disc, a rotating platform is arranged at the output end of the driving device, and the suspension cutting arm is connected with the rotating platform through a swing driving mechanism.
The cantilever cutting arm comprises a fixed outer arm, a telescopic inner arm and a cantilever cutting hob, the fixed outer arm is hinged to the rotating platform, the telescopic inner arm is sleeved in the fixed outer arm and is in sliding connection with the fixed outer arm through a telescopic oil cylinder, a rotating cutter disc is arranged at the outer end of the telescopic inner arm, and the cantilever cutting hob is axially arranged on the rotating cutter disc.
And the fixed outer arm is provided with a second stirring rod and is connected with the rotating platform through a swing driving mechanism.
The swing driving mechanism comprises a telescopic piece and a supporting column arranged at the center of the rotary platform, one end of the supporting column is fixedly connected with the rotary platform, the other end of the supporting column is provided with a front platform, one end of the telescopic piece is hinged to the fixed outer arm, and the other end of the telescopic piece is hinged to the front platform.
The telescopic piece is a telescopic oil cylinder, and a conical slag guide plate is arranged on the front end face of the front platform.
The water jet rock breaking mechanism comprises an expanding excavation water jet nozzle arranged on the cutter head main body and/or a breaking dismantling water jet nozzle arranged on the suspension cutting arm, and the expanding excavation water jet nozzle and the breaking dismantling water jet nozzle are connected with a high-pressure water system through a slewing mechanism.
The rotary mechanism comprises a first rotary joint arranged in the tunneling host, a radial water outlet pipe and a central water outlet pipe are arranged on the first rotary joint, the radial water outlet pipe is connected with the expanding excavation water jet nozzle, and the central water outlet pipe is connected with the breaking and dismantling water jet nozzle through a second rotary joint; the second rotary joint is arranged on the pipeline breaking and dismantling device.
The slag discharging system comprises a spiral conveyor and a belt conveyor, wherein the slag feeding end of the spiral conveyor corresponds to the expanding excavation cutter disc, and the slag discharging end of the spiral conveyor corresponds to the belt conveyor.
A construction method of a water jet flow breaking-in and expanding-diameter tunneling machine comprises the following steps:
s1: hoisting the demolition and diameter expansion heading machine to the original pipeline, and debugging to a state to be worked;
s2: starting the breaking-in and expanding tunneling machine, firstly breaking-in the original pipeline by a pipeline breaking-in device of the breaking-in and expanding tunneling machine, and expanding and excavating the tunnel after breaking-in and expanding tunneling by an expanding and excavating cutterhead of the breaking-in and expanding tunneling machine;
s3: in the tunneling process of the tunneling machine in the step S2, the water jet rock breaking mechanism of the pipeline breaking and detaching device is matched with the suspended cutting hob of the pipeline breaking and detaching device to break and detach the reinforcing steel bars in the original pipeline by high-pressure water jet; the water jet rock breaking mechanism on the expanding excavation cutter disc is matched with the expanding excavation cutter disc to carry out high-pressure water auxiliary rock breaking, and high-pressure water jet expanding excavation is carried out on the broken and dismantled tunnel;
s4: the slag generated in the steps S2 and S3 enters the soil bin through the digging cutter disc and then is discharged through the slag discharging system;
s5: and repeating the steps S2-S4 until the original pipeline is completely broken and excavated.
The specific steps of step S3 are as follows:
s3.1: the extension length and the opening angle of a suspended cutting arm of a pipeline breaking and disassembling device are adjusted according to the diameter of an original pipeline, and a proper suspended cutting angle is ensured between a suspended cutting hob on the suspended cutting arm and the original pipeline;
s3.2: starting the pipeline breaking and dismantling device and the expanding excavation cutter disc, and simultaneously starting the water jet rock breaking mechanism according to the original pipeline condition, wherein the pipeline breaking and dismantling device rotates along with the expanding excavation cutter disc and simultaneously rotates;
s3.3: the suspended cutting hob of the pipeline breaking and dismantling device is matched with the water jet rock breaking mechanism to perform suspended cutting and water jet rock breaking and dismantling on the original pipeline, and the expanding and excavating cutter disc is matched with the water jet rock breaking mechanism to perform extrusion and water jet rock breaking and expanding and excavating on the broken and dismantled tunnel.
According to the invention, the water jet rock breaking mechanism of the pipeline breaking and dismantling device is used for carrying out the prior breaking and removal of the suspended cutting water jet rock breaking on the original pipeline, and the expanding and excavating cutter disc and water jet rock breaking mechanism is used for carrying out the post expanding of the extrusion water jet rock breaking on the original pipeline tunnel, so that the one-step forming of breaking and expanding is completed, the rock breaking efficiency is high, and the construction efficiency is greatly improved. The pipeline breaking and dismantling device has the advantages that pipelines with different diameters can be broken and dismantled in a real-time adjustable mode through adjustment of the unfolding angle and the extending length of the suspended cutting arm, the application range is wide, the device is good in integration with the existing cutter head, the output cost is reduced, flexible and efficient excavation of the original pipeline is achieved, the device is suitable for various strata, and the device is a great innovation of tunnel expanding excavation.
Drawings
In order to illustrate the embodiments of the invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the invention, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.
Fig. 1 is a schematic diagram of the connection state of the tunneling main machine and the rear supporting equipment.
Fig. 2 is a schematic side view of the tunneling main machine of the present invention.
Figure 3 is a schematic main view of the tunnelling machine according to the invention.
FIG. 4 is a schematic view of the pipeline breaking and disconnecting apparatus of the present invention in an expanded state.
Fig. 5 is a schematic view of the internal structure of the cantilever cutting arm of the present invention.
Fig. 6 is a schematic view of a demolition water jet nozzle arrangement.
Fig. 7 is a partially enlarged view of a portion a in fig. 2.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, in embodiment 1, a water jet flow breaking and expanding heading machine includes a heading main machine 1 and a rear supporting device 2, which is similar to the configuration of a heading machine in the prior art. The front end of the tunneling host 1 is provided with an expanding excavation cutter head 4, the expanding excavation cutter head 4 is connected with a main drive 5 arranged in the tunneling host 1, and the main drive provides power for rotation of the expanding excavation cutter head and is used for crushing, breaking and expanding excavation of the extruded rock of the tunnel 8 after breaking and dismantling. The expanding excavation cutter head 4 is provided with a pipeline breaking and dismantling device 3, and the pipeline breaking and dismantling device 3 can synchronously rotate along with the expanding excavation cutter head and can also rotate to break and dismantle the suspended cutting broken rock of the original pipeline 7. The pipeline breaking and dismantling device 3 and/or the expanding excavation cutter disc 4 are/is provided with a water jet rock breaking mechanism 9, namely the water jet rock breaking mechanism can be arranged on the pipeline breaking and dismantling device, and the water jet rock breaking mechanism can be arranged on the expanding excavation cutter disc; in order to improve the efficiency, the pipeline breaking and dismantling device 3 and the expanding and excavating cutter head are provided with water jet rock breaking mechanisms, the water jet rock breaking mechanisms 9 are connected with a high-pressure water system, and the high-pressure water system is arranged on rear supporting equipment and provides a high-pressure water source for the water jet rock breaking mechanisms. The digging enlarging cutter disc 4 corresponds to the slag discharging system, and slag generated in the process of breaking, dismantling and expanding is discharged out of the hole through the slag discharging system.
Further, as shown in fig. 2, the reaming cutter head 4 includes a cutter head main body 401, a mounting slot 402 is provided at the center of the cutter head main body 401, and the pipeline breaking and dismantling device 3 is disposed in the mounting slot 402 and extends forward out of the cutter head main body 401; the pipeline breaking-in device 3 is fixed in the mounting groove hole, and the pipeline breaking-in device can rotate synchronously with the cutter head main body. An excavation cutter 404 and a first stirring rod 403 can be arranged on the front panel of the cutter head main body 401 as required. Excavation cutter 404 adopts the excavation hobbing cutter among the prior art, and first stirring rod equipartition is on the front panel of blade disc main part for broken reinforcing bar sediment and the ground sediment that the in-process produced of tearing open stir, be convenient for slag tap smoothly.
Further, as shown in fig. 3, the pipeline breaking and dismantling device 3 includes a driving device 303 and a suspension cutting arm 301, the driving device 303 is fixed in a mounting slot 402 of the enlarging and excavating cutter head 4, an output end of the driving device 303 is provided with a rotating platform 304, the rotating platform and the cutter head main body are arranged on the same central axis, the driving device can adopt a hydraulic motor or an electric motor, and the suspension cutting arm 301 is connected with the rotating platform 304 through a swing driving mechanism. Under drive arrangement's effect promptly, drive arrangement drives the rotation of overhang cutting arm through rotary platform, realizes the rotation of broken dismouting of pipeline device for broken the tearing of former pipeline. One or more overhanging-cut arms 301 can be arranged on the rotary platform 304, one overhanging-cut arm 301 corresponds to one swing driving mechanism, under the action of the swing driving mechanism, the adjustment of the opening angle of the overhanging-cut arm is realized, and the overhanging-cut hob on the overhanging-cut arm and the original pipeline are ensured to have a proper overhanging-cut angle so as to be suitable for breaking and dismantling pipelines with different diameters and improve the breaking and dismantling efficiency.
As shown in fig. 4 and 5, in embodiment 2, the tunneling machine for breaking and dismantling and expanding comprises a suspended cutting arm 301, the suspended cutting arm 301 includes a fixed outer arm 3011, a telescopic inner arm 3012 and a suspended cutting hob 3013, the fixed outer arm 3011 is hinged to the rotating platform 304, the telescopic inner arm 3012 is sleeved in the fixed outer arm 3011 and is slidably connected to the fixed outer arm 3011 through a telescopic oil cylinder 3015, the fixed outer arm is of a hollow structure, a telescopic oil cylinder 1065 is built in the fixed outer arm, one end of the telescopic oil cylinder is hinged to the fixed outer arm, the other end of the telescopic oil cylinder is hinged to the telescopic inner arm, and the telescopic inner arm can stretch relative to the fixed outer arm under the action of the telescopic oil cylinder, so as to adjust the overall length of the suspended cutting arm. And a rotary cutter head 3014 is arranged at the outer end of the telescopic inner arm 3012. The rotary cutter head comprises a fixed portion and a rotating portion, a bearing structure is arranged between the rotating portion and the fixed portion, the fixed portion is fixedly connected with the telescopic inner arm, the suspension cutting hob is fixed to the rotating portion, namely the suspension cutting hob 3013 is axially arranged on the rotary cutter head 3014, the suspension cutting hob is stressed in the tunneling process, and the rotary cutter head can rotate passively. Preferably, the fixed outer arm 3011 is provided with a second stirring rod 3016, and the second stirring rod 3016 is perpendicular to the fixed outer arm, and may also be obliquely arranged to wind and tear the reinforcing steel bar in the breaking process. The fixed outer arm 3011 is connected to the rotating platform 304 via a swing drive mechanism. The swing driving mechanism realizes the adjustment of the integral long swing angle (namely the adjustment of the opening angle) of the suspended cutting arm through the fixed outer arm.
Further, the swing driving mechanism comprises an expansion piece 302 and a support column 306 arranged at the center of the rotating platform 304, one end of the support column 306 is fixedly connected with the rotating platform 304, the other end of the support column 306 is fixedly provided with a front platform 305, the central line axis of the support column coincides with the central axis of the rotating platform, one end of the expansion piece 302 is hinged to the fixed outer arm 3011, and the other end of the expansion piece 302 is hinged to the front platform 305. Preferably, the telescopic member 302 is a telescopic cylinder, and under the action of the telescopic cylinder, the suspended cutting arm is opened or closed relative to the supporting column, so as to change the adjustment of the swing angle of the suspended cutting arm. The front end surface of the front platform 305 is provided with a conical slag guide plate 307, so that slag soil can smoothly enter a soil bin arranged at the rear part of the expanding excavation cutter head.
Further, rotation mechanism is including setting up the first rotary joint 903 in tunnelling host computer 1, and first rotary joint 903 and the same central axis setting of blade disc main part are equipped with radial outlet pipe 904 and central outlet pipe 905 on the first rotary joint 903, and radial outlet pipe 904 and central outlet pipe 905 rotate along with expanding the cutter head and carry out the synchronization, and radial outlet pipe 904 is connected with expanding and digs water jet nozzle 901, lets in the high pressure water to expanding and digs water jet nozzle, carries out high pressure water jet impact to the tunnel after breaking open and digs. The central water outlet pipe 905 is connected with the demolition water jet nozzle 902 through a second rotary joint 906; the second swivel joint 906 is arranged on the pipeline breaking and dismantling device 3, so that the water inlet pipe of the breaking and dismantling water jet nozzle 902 synchronously rotates along with the rotary cutter head 3014 under the action of the second swivel joint, and the original pipeline is broken and dismantled by high-pressure water jet rock breaking.
Further, the slag discharging system comprises a spiral conveyor 6 and a belt conveyor, wherein the slag inlet end of the spiral conveyor 6 corresponds to the slag outlet of the soil bin at the rear part of the digging cutter disc 4, and the slag outlet end of the spiral conveyor 6 corresponds to the belt conveyor. The residue soil and slurry entering the soil bin are discharged out of the hole through the screw conveyor 6 and the belt conveyor.
s1: hoisting the demolition and diameter expansion heading machine to the original pipeline, and debugging to a state to be worked;
s2: starting the breaking-in and expanding tunneling machine, firstly breaking-in the original pipeline by a pipeline breaking-in device 3 of the breaking-in and expanding tunneling machine, and expanding and excavating the tunnel after breaking-in and expanding tunneling by an expanding and excavating cutter head 4 of the breaking-in and expanding tunneling machine;
s3: in the tunneling process of the tunneling machine in the step S2, the water jet rock breaking mechanism 9 of the pipeline breaking and detaching device 3 cooperates with the suspended cutting hob 3013 of the pipeline breaking and detaching device 3 to break and detach the reinforcing steel bars in the original pipeline by high-pressure water jet; and the water jet rock breaking mechanism 9 on the expanding and excavating cutter head 4 is matched with the expanding and excavating cutter head 4 to carry out high-pressure water auxiliary rock breaking, and high-pressure water jet expanding excavation is carried out on the broken and dismantled tunnel. The method comprises the following specific steps: s3.1: the extension length and the opening angle of the suspended cutting arm 301 of the pipeline breaking and disassembling device 3 are adjusted according to the diameter of the original pipeline, so that a proper suspended cutting angle is ensured between the suspended cutting hob 3013 on the suspended cutting arm 301 and the original pipeline, the original pipeline is a free surface of the suspended cutting hob, and the suspended cutting hob shears and breaks the original pipeline, so that the breaking and disassembling efficiency is improved; s3.2: starting the pipeline breaking and dismantling device 3 and the expanding excavation cutter disc 4, starting the water jet rock breaking mechanism 9 according to the original pipeline condition, and enabling the pipeline breaking and dismantling device 3 to rotate along with the expanding excavation cutter disc 4; s3.3: the overhanging hob 3013 of the pipeline breaking device 3 cooperates with the water jet rock breaking mechanism 9 to carry out overhanging cutting, water jet rock breaking and breaking on the original pipeline, and the expanding and excavating cutter head 4 cooperates with the water jet rock breaking mechanism 9 to extrude, water jet rock breaking and expanding and excavating on the broken and detached tunnel.
S4: the slag generated in the steps S2 and S3 enters the soil bin through the digging cutter disc 4 and then is discharged through the slag discharging system;
s5: and repeating the steps S2-S4 until the original pipeline is completely broken and excavated.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (12)
1. The utility model provides a broken tunnelling machine of tearing open, expanding of water jet, includes tunnelling host computer (1) and back corollary equipment (2), its characterized in that: the front end of tunnelling host computer (1) is equipped with expands digs blade disc (4), expands digs blade disc (4) and is connected with main drive (5) that set up in tunnelling host computer (1), expand to be equipped with the broken dismouting of pipeline (3) on digging blade disc (4), the broken dismouting of pipeline (3) and/or expand to be equipped with the broken rock mechanism of water jet (9) on digging blade disc (4), the broken rock mechanism of water jet (9) are connected with high pressure water system, it is corresponding with slag tapping system to expand digs blade disc (4).
2. The water jet demolishing, expanding heading machine according to claim 1, characterized in that: the expanding excavation cutter head (4) comprises a cutter head main body (401), a mounting slotted hole (402) is formed in the center of the cutter head main body (401), and the pipeline breaking and dismantling device (3) is arranged in the mounting slotted hole (402) and extends forwards out of the cutter head main body (401); the front end face of the cutter head body (401) is provided with a first stirring rod (403) and an excavation cutter (404).
3. The water jet demolition and diameter expansion heading machine according to claim 1 or 2, characterized in that: the pipeline breaking and dismantling device (3) comprises a driving device (303) and a suspended cutting arm (301), the driving device (303) is fixed on the expanding and digging cutter head (4), a rotating platform (304) is arranged at the output end of the driving device (303), and the suspended cutting arm (301) is connected with the rotating platform (304) through a swing driving mechanism.
4. The water jet demolishing, expanding heading machine according to claim 3, characterized in that: the cantilever cutting arm (301) comprises a fixed outer arm (3011), a telescopic inner arm (3012) and a cantilever cutting hob (3013), the fixed outer arm (3011) is hinged to the rotary platform (304), the telescopic inner arm (3012) is sleeved in the fixed outer arm (3011) and is connected with the fixed outer arm (3011) in a sliding mode through a telescopic oil cylinder (3015), a rotary cutter (3014) is arranged at the outer end of the telescopic inner arm (3012), and the cantilever cutting hob (3013) is arranged on the rotary cutter (3014) along the axial direction.
5. The water jet demolishing, expanding heading machine according to claim 4, characterized in that: and a second stirring rod (3016) is arranged on the fixed outer arm (3011), and the fixed outer arm (3011) is connected with the rotating platform (304) through a swing driving mechanism.
6. The water jet demolition and diameter expansion heading machine according to claim 4 or 5, characterized in that: the swing driving mechanism comprises a telescopic piece (302) and a supporting column (306) arranged at the center of the rotating platform (304), one end of the supporting column (306) is fixedly connected with the rotating platform (304), the other end of the supporting column is provided with a front platform (305), one end of the telescopic piece (302) is hinged to the fixed outer arm (3011), and the other end of the telescopic piece is hinged to the front platform (305).
7. The water jet demolishing, expanding heading machine according to claim 6, characterized in that: the telescopic piece (302) is a telescopic oil cylinder, and a tapered slag guide plate (307) is arranged on the front end face of the front platform (305).
8. The water jet demolition and diameter expansion heading machine according to any one of claims 2, 4, 5 and 7, wherein: the water jet rock breaking mechanism (9) comprises an expanding excavation water jet nozzle (901) arranged on the cutter head main body (401) and/or a breaking dismantling water jet nozzle (902) arranged on the suspension cutting arm (301), and the expanding excavation water jet nozzle (901) and the breaking dismantling water jet nozzle (902) are connected with a high-pressure water system through a slewing mechanism.
9. The water jet demolishing, expanding heading machine according to claim 8, characterized in that: the rotary mechanism comprises a first rotary joint (903) arranged in the tunneling main machine (1), the first rotary joint (903) is provided with a radial water outlet pipe (904) and a central water outlet pipe (905), the radial water outlet pipe (904) is connected with the expanding excavation water jet nozzle (901), and the central water outlet pipe (905) is connected with the breaking and dismantling water jet nozzle (902) through a second rotary joint (906); the second rotary joint (906) is arranged on the pipeline breaking and dismantling device (3).
10. The water jet demolition and diameter expansion heading machine according to any one of claims 1, 2, 4, 5, 7, and 9, wherein: the slag discharging system comprises a spiral conveyor (6) and a belt conveyor, wherein the slag feeding end of the spiral conveyor (6) corresponds to the expanded digging cutter head (4), and the slag discharging end of the spiral conveyor (6) corresponds to the belt conveyor.
11. A construction method of a water jet flow breaking-in and expanding-diameter tunneling machine is characterized in that: the method comprises the following steps:
s1: hoisting the demolition and diameter expansion heading machine to the original pipeline, and debugging to a state to be worked;
s2: starting the tunneling machine with the functions of breaking and expanding, wherein a pipeline breaking and disassembling device (3) of the tunneling machine with the functions of breaking and expanding firstly breaks and dissembles an original pipeline, and an expanding excavation cutter head (4) of the tunneling machine with the functions of breaking and expanding performs expanding excavation on a broken and dissembled tunnel;
s3: in the tunneling process of the tunneling machine in the step S2, the water jet rock breaking mechanism (9) of the pipeline breaking and detaching device (3) is matched with the suspended cutting hob (3013) of the pipeline breaking and detaching device (3) to break and detach the reinforcing steel bars in the original pipeline by high-pressure water jet; the water jet rock breaking mechanism (9) on the expanding excavation cutter head (4) is matched with the expanding excavation cutter head (4) to carry out high-pressure water auxiliary rock breaking, and high-pressure water jet expanding excavation is carried out on the broken and dismantled tunnel;
s4: the muck generated in the steps S2 and S3 enters the soil bin through the enlarging and digging cutter head (4), and then the muck is discharged through the muck discharging system;
s5: and repeating the steps S2-S4 until the original pipeline is completely broken and excavated.
12. The construction method of the water jet demolition and diameter expansion heading machine according to claim 11, characterized in that: the specific steps of step S3 are as follows:
s3.1: the extension length and the opening angle of a suspended cutting arm (301) of the pipeline breaking and dismounting device (3) are adjusted according to the diameter of the original pipeline, and a suspended cutting hob (3013) on the suspended cutting arm (301) is ensured to have a proper suspended cutting angle with the original pipeline;
s3.2: starting the pipeline breaking and dismantling device (3) and the expanding excavation cutter head (4), and simultaneously starting the water jet rock breaking mechanism (9) according to the original pipeline condition, wherein the pipeline breaking and dismantling device (3) rotates along with the expanding excavation cutter head (4) and simultaneously rotates;
s3.3: a suspended cutting hob (3013) of the pipeline breaking and dismantling device (3) is matched with a water jet rock breaking mechanism (9) to perform suspended cutting, water jet rock breaking and dismantling on an original pipeline, and an expanding excavation cutter head (4) is matched with the water jet rock breaking mechanism (9) to perform extrusion, water jet rock breaking and expanding excavation on a broken and dismantled tunnel.
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| CN113700491A (en) * | 2021-09-08 | 2021-11-26 | 盾构及掘进技术国家重点实验室 | High-pressure water jet auxiliary rock breaking device of detachable shield machine |
| CN114382129A (en) * | 2022-01-24 | 2022-04-22 | 中铁十六局集团有限公司 | Underwater exhaust sand flushing system with multiple nozzles |
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| CN112031788B (en) | 2022-03-22 |
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