CN114575239A - Migration and modification method for in-situ protection of underground communication pipeline - Google Patents
Migration and modification method for in-situ protection of underground communication pipeline Download PDFInfo
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- CN114575239A CN114575239A CN202210155713.XA CN202210155713A CN114575239A CN 114575239 A CN114575239 A CN 114575239A CN 202210155713 A CN202210155713 A CN 202210155713A CN 114575239 A CN114575239 A CN 114575239A
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- 238000004891 communication Methods 0.000 title claims abstract description 149
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 26
- 238000013508 migration Methods 0.000 title claims abstract description 19
- 230000005012 migration Effects 0.000 title claims abstract description 19
- 238000002715 modification method Methods 0.000 title claims abstract description 17
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 18
- 230000002093 peripheral effect Effects 0.000 claims abstract description 9
- 239000000725 suspension Substances 0.000 claims description 48
- 239000004576 sand Substances 0.000 claims description 27
- 239000004567 concrete Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 5
- 239000002689 soil Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 28
- 238000009412 basement excavation Methods 0.000 abstract description 7
- 102000001999 Transcription Factor Pit-1 Human genes 0.000 description 9
- 108010040742 Transcription Factor Pit-1 Proteins 0.000 description 9
- 230000001681 protective effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 208000010392 Bone Fractures Diseases 0.000 description 2
- 206010017076 Fracture Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D18/00—Bridges specially adapted for particular applications or functions not provided for elsewhere, e.g. aqueducts, bridges for supporting pipe-lines
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
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Abstract
The application relates to the field of civil engineering construction, in particular to a migration and modification method for in-situ protection of an underground communication pipeline, which comprises the following steps: determining the position of the communication pipeline: verifying the position of the communication pipeline in detail by combining a pipeline drawing, and manually exploring and excavating the communication pipeline until the communication pipeline in an operation range is excavated; setting a foundation on the side wall of the deep foundation pit: building reinforcing piles on the peripheral sides of the side walls of the deep foundation pits at the two ends of the communication pipeline in an operation range, and then pouring a bearing platform on the top of each reinforcing pile in situ to enable the bearing platform to be located above the communication pipeline; placing a truss: placing the truss on the surface of the bearing table, and enabling the truss to be transversely placed above the communication pipeline; suspending the communication pipeline: and placing a plurality of prefabricated bottom plates along the length direction of the communication pipeline, enabling the prefabricated bottom plates to be abutted against the bottom of the communication pipeline, then connecting the prefabricated bottom plates with the truss by using connecting pieces, and suspending the communication pipeline. The communication pipeline subsides in deep basal pit and warp the problem of being torn apart when this application improves deep basal pit excavation.
Description
Technical Field
The application relates to the field of civil engineering construction, in particular to a migration and modification method for in-situ protection of an underground communication pipeline.
Background
Water, electricity, warm, gas pipeline and communication etc. pipeline are buried underground more, and along with city construction's rapid development, pipeline is more complicated changeable, because the implementation of engineering such as deep basal pit, underground pipe gallery, newly-built pipe network and old network transformation, inevitable will excavate secret soil layer, and pipeline protection problem in the excavation just seems especially important.
At present, when pipelines are encountered in the construction process, the pipelines are protected by adopting an in-situ suspension protection construction method, namely, the pipelines are constructed below the pipelines and on the peripheral sides of the pipelines under the condition of not damaging the original pipelines. In particular, when the communication pipeline is encountered in the construction process, the communication pipeline is subjected to in-situ suspension protection in order to reduce the risk of communication interruption caused by damage of the communication pipeline. During construction, a plurality of suspension frames are installed at the bottom of a communication pipeline by constructors, the communication pipeline is suspended and erected, the suspension frames are arranged at intervals along the length direction of the communication pipeline, a drilling pile and a pile top bearing platform are poured at the bottom of the communication pipeline, the pile top bearing platform is used for bearing the communication pipeline, and then soil body excavation and construction can be carried out on the lower side and the peripheral side of the communication pipeline.
In view of the above related technologies, the inventor thinks that when the deep foundation pit is excavated, the construction machine may move at the bottom of the deep foundation pit, and although the structure of the bored pile and the pile-top bearing platform may reduce the risk of the communication pipeline settling and deforming in the deep foundation pit, when the construction machine moves at the bottom of the deep foundation pit, the construction machine may easily collide with the bored pile, which may cause the bored pile to break and collapse, thereby causing the communication pipeline to settle and deform and be torn off in the deep foundation pit.
Disclosure of Invention
In order to solve the problem that the communication pipeline is broken due to sedimentation deformation in the deep foundation pit during excavation of the deep foundation pit, the application provides a migration and modification method for in-situ protection of the underground communication pipeline.
The migration and modification method for in-situ protection of the underground communication pipeline adopts the following technical scheme:
a migration and modification method for in-situ protection of underground communication pipelines comprises the following steps:
s1: determining the position of the communication pipeline: verifying the position of the communication pipeline in detail by combining a pipeline drawing, and manually exploring and excavating the communication pipeline until the communication pipeline in an operation range is excavated;
s2: setting a foundation on the side wall of the deep foundation pit: building reinforcing piles on the peripheral sides of the side walls of the deep foundation pits at the two ends of the communication pipeline in an operation range, and then pouring a bearing platform on the top of each reinforcing pile in situ to enable the bearing platform to be located above the communication pipeline;
s3: placing a truss: placing the truss on the surface of the bearing platform, and enabling the truss to be transversely placed above the communication pipeline along the length direction of the communication pipeline;
s4: suspending the communication pipeline: trenching a soil layer which is not excavated at the lower part of the communication pipeline along the length direction of the communication pipeline, placing a plurality of prefabricated bottom plates, laying the prefabricated bottom plates along the length direction of the communication pipeline to enable the prefabricated bottom plates to be abutted against the bottom of the communication pipeline, then connecting the prefabricated bottom plates with a truss by using a connecting piece, and suspending and raising the height of the communication pipeline.
By adopting the technical scheme, because the reinforcing piles and the bearing platform are positioned on the side wall of the deep foundation pit, the risk that the reinforcing piles are broken and collapsed due to the fact that construction machinery at the bottom of the deep foundation pit collides with the reinforcing piles is reduced, and the communication pipeline is suspended through the truss, the prefabricated bottom plate and the connecting piece, so that the communication pipeline is protected in situ, and the device has the characteristics of uninterrupted communication construction, easiness in popularization and application and the like. Meanwhile, due to the introduction of the prefabricated bottom plate, the risk that construction machinery at the bottom of the deep foundation pit collides with the communication pipeline is reduced, the communication pipeline is protected strongly, and the problem that the communication pipeline is broken due to sedimentation deformation in the deep foundation pit when the deep foundation pit is excavated is solved.
Optionally, the connecting piece comprises an upper suspension beam, a lower suspension beam and a suspension pull rod; the upper suspension beam is abutted against the top of the communication pipeline; the lower suspension beam is used for connecting the prefabricated bottom plate through bolts; two ends of the suspension pull rod are respectively connected to the upper suspension beam and the lower suspension beam so as to be matched with the truss to suspend the communication pipeline.
Through adopting above-mentioned technical scheme, the bolted connection of hanging in midair roof beam and prefabricated bottom plate down realizes the effect that connecting piece and prefabricated bottom plate are connected, and the constructor of not only being convenient for is connected prefabricated bottom plate and connecting piece fixedly, reduces the risk that prefabricated bottom plate and connecting piece break away from in the deep basal pit work progress simultaneously.
Optionally, when the prefabricated bottom plates are connected with the lower suspension beam through bolts, the adjacent prefabricated bottom plates are connected with the same lower suspension beam through bolts, so that the gap between the adjacent prefabricated bottom plates is located right above the lower suspension beam.
Through adopting above-mentioned technical scheme, make polylith prefabricated bottom plate and hang the bottom plate that the roof beam formed a monoblock confession communication pipeline butt down, reduce the risk that construction machinery of deep basal pit bottom collided communication pipeline, improve the protective capacities of prefabricated bottom plate to communication pipeline.
Optionally, after the connection of the prefabricated bottom plates and the connecting pieces is completed, the prefabricated side plates are installed on the upper surface of the prefabricated bottom plate along the length direction of the communication pipeline, and the side walls of the adjacent prefabricated side plates are mutually abutted, so that the communication pipeline is located in a groove formed by the prefabricated side plates and the prefabricated bottom plates.
Through adopting above-mentioned technical scheme, the combination of prefabricated curb plate and prefabricated bottom plate reduces the risk that construction machinery collided communication pipeline bottom and lateral wall, further improves the protective capacities to communication pipeline.
Optionally, the groove is filled with sand, so that the communication pipeline in the groove is buried in the sand.
Through adopting above-mentioned technical scheme, on the one hand, the sand in the recess provides the support for prefabricated bottom plate and prefabricated curb plate, reduces prefabricated bottom plate and prefabricated curb plate fracture risk when receiving the collision, reduces the cost of follow-up maintenance prefabricated curb plate and prefabricated bottom plate, and energy-conserving festival material realizes green construction, and on the other hand reduces the risk that the prefabricated curb plate received the extrusion communication pipeline when colliding the fracture, improves the protective capacities to the communication pipeline.
Optionally, after sand is filled into the groove, concrete is used for carrying out capping operation on the deep foundation pit, and after the concrete on the periphery of the prefabricated side plate, which is lower than the upper part of the prefabricated side plate, reaches a set strength, the truss and the connecting piece, which is higher than the preset height of the upper part of the communication pipeline, are removed.
By adopting the technical scheme, the truss and part of connecting pieces can be conveniently recycled, the construction cost is reduced, and the energy-saving and environment-friendly effects are achieved.
Optionally, after the communication pipeline is buried in the sand, water is poured into the groove, so that the sand is further settled in the groove.
Through adopting above-mentioned technical scheme, sand and communication pipeline form closely knit whole, improve sand and communication pipeline's bonding strength, improve the protective capacities of sand to communication pipeline.
Optionally, after the communication pipeline is buried in the sand, the prefabricated top plate is used for covering the notch of the groove.
Through adopting above-mentioned technical scheme, the introduction of prefabricated roof reduces the risk that external concrete runs into in the recess, reduces the risk of the sand caking in the recess, is convenient for follow-up dig open bury the communication pipeline of burying in the recess and overhaul the operation to the communication pipeline.
Optionally, the prefabricated side plate is fixedly connected with the prefabricated top plate through bolts.
Through adopting above-mentioned technical scheme, reduce the gliding risk of prefabricated roof relative prefabricated curb plate, reduce the risk of adjacent prefabricated roof relative sliding gap increase when deep basal pit capping.
Optionally, the prefabricated side plate and the prefabricated bottom plate are fixedly connected through bolts.
Through adopting above-mentioned technical scheme, reduce the risk of the relative prefabricated roof slope of prefabricated bottom plate, improve the stability of being connected of prefabricated bottom plate and prefabricated roof.
In summary, the present application includes at least one of the following beneficial technical effects:
the reinforcing pile and the bearing platform are positioned on the side wall of the deep foundation pit, so that the risk that the reinforcing pile is broken and collapsed when construction machinery at the bottom of the deep foundation pit collides with the reinforcing pile is reduced, meanwhile, due to the introduction of the prefabricated bottom plate, the risk that the construction machinery at the bottom of the deep foundation pit collides with the communication pipeline is reduced, the communication pipeline is highly protected, and the problem that the communication pipeline is broken due to settlement deformation in the deep foundation pit when the deep foundation pit is excavated is solved;
the combination of the prefabricated side plate and the prefabricated bottom plate forms a groove, the communication pipeline is located in the groove, the risk that construction machinery collides the bottom and the side wall of the communication pipeline is reduced, the cost of subsequent maintenance of the prefabricated side plate and the prefabricated bottom plate is reduced, green construction is achieved through energy and material conservation, meanwhile, sand in the groove supports the prefabricated bottom plate and the prefabricated side plate, and the risk that the prefabricated bottom plate and the prefabricated side plate are broken when the prefabricated bottom plate and the prefabricated side plate are collided is reduced.
Drawings
Fig. 1 is a schematic structural view for showing a reinforcing pile and a bearing platform according to an embodiment of the present application.
Fig. 2 is a schematic view for showing a state that a truss according to an embodiment of the present application is placed on an upper surface of a bearing platform.
Fig. 3 is a schematic diagram for showing a state that a prefabricated backplane of the embodiment of the present application is placed at the bottom of a communication pipeline.
FIG. 4 is a schematic diagram for showing the connection piece of the embodiment of the present application engaging with the prefabricated base plate to suspend the communication pipeline overhead.
Fig. 5 is a schematic view for showing the installation of the prefabricated side panels and the prefabricated bottom panels according to the embodiment of the application.
Fig. 6 is a schematic view for illustrating a state where the truss and the connecting member are removed according to the embodiment of the present application.
Description of reference numerals: 1. a communication pipeline; 2. a deep foundation pit; 3. reinforcing piles; 4. a bearing platform; 5. a truss; 6. prefabricating a bottom plate; 7. a connecting member; 71. an upper suspension beam; 72. a lower suspension beam; 73. a suspension pull rod; 8. prefabricating a side plate; 9. a groove; 10. prefabricating a top plate; 101. a tank body.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
The embodiment of the application discloses a migration and modification method for in-situ protection of an underground communication pipeline.
Referring to fig. 1 to 6, a migration method for in-situ protection of an underground communication pipeline comprises the following steps:
s1: communication pipeline 1 position determination.
a: before construction, according to the design file and in combination with the actual site, the communication pipeline 1 in the construction range is organized to be investigated in detail, and a written investigation and verification report is completed.
b: the position of the communication pipeline 1 is verified in detail by combining a pipeline drawing, mechanical excavation is strictly forbidden within the range of 2m around the pipeline, manual work is adopted for excavating after probing, after the communication pipeline 1 is excavated by local probing, the excavation range is gradually enlarged along the pipeline trend until the communication pipeline 1 in the excavation operation range is excavated.
S2: and a foundation is arranged on the side wall of the deep foundation pit 2.
a: two reinforcing piles 3 are respectively built on the peripheral sides of the side walls of the deep foundation pit 2 at the two ends of the communication pipeline 1 in the operation range, so that the communication pipeline 1 is positioned between the two reinforcing piles 3, and the top of each reinforcing pile 3 is formed above the communication pipeline 1.
b: a bearing platform 4 is cast in situ on top of the reinforcing piles 3, such that the bearing platform 4 is located above the communication pipeline 1.
S3: the truss 5 is placed.
a: the truss 5 is placed on the upper surface of the bearing platform 4, so that the truss 5 is transversely arranged above the communication pipeline 1 along the length direction of the communication pipeline 1, and the length of the truss 5 is determined by the length of the communication pipeline 1 penetrating through the deep foundation pit 2.
b: and after the relative positions of the truss 5 and the bearing table 4 are determined, fixing the truss 5 and the bearing table 4 by bolts.
S4: the communication line 1 is suspended.
a: and (4) trenching the unearthed soil layer at the lower part of the communication pipeline 1.
b: and (3) enabling the prefabricated bottom plate 6 to pass through the groove dug at the lower part of the communication pipeline 1, and enabling the upper surface of the prefabricated bottom plate 6 to be abutted against the peripheral side of the communication pipeline 1. The prefabricated bottom plate 6 is formed by pouring concrete.
c: the prefabricated floor 6 and the girder 5 are connected using the connection member 7.
The connecting piece 7 comprises an upper suspension beam 71, a lower suspension beam 72 and two suspension pull rods 73, wherein the upper suspension beam 71 and the lower suspension beam 72 are made of channel steel. Nuts are threadedly coupled to both ends of the suspension link 73 to restrict the suspension link 73 from being separated from the upper and lower suspension beams 71 and 72.
The lower suspension beam 72 is bolted to the prefabricated floor 6, then two suspension rods 73 are connected to the lower suspension beam 72 so that the communication pipeline 1 is positioned between the two suspension rods 73, and then the upper suspension beam 71 is pressed against the upper portion of the girder 5 so that the suspension rods 73 are connected and fixed to the upper suspension beam 71.
e: and repeating the steps a-c, so that the plurality of prefabricated bottom plates 6 and the plurality of connecting pieces 7 are arranged along the length direction of the communication pipeline 1, the adjacent prefabricated bottom plates 6 are connected to the same lower suspension beam 72, and the gap between the adjacent prefabricated bottom plates 6 is positioned right above the lower suspension beam 72, so that the communication pipeline 1 penetrating through the deep foundation pit 2 is suspended overhead.
S5: the mounting side plates are grooved.
a: placing prefabricated curb plate 8 of polylith in the upper surface of prefabricated bottom plate 6 along communication pipeline 1's length direction, the mutual butt of lateral wall of adjacent prefabricated curb plate 8, prefabricated curb plate 8 has all been placed to communication pipeline 1's both sides, and prefabricated curb plate 8 presss from both sides between hanging in midair pull rod 73 and communication pipeline 1. The communication pipeline 1 is positioned in a groove 9 formed by the prefabricated side plate 8 and the prefabricated bottom plate 6, and the prefabricated side plate 8 is made of the same material as the prefabricated bottom plate 6.
b: and (3) fixing the prefabricated side plate 8 and the prefabricated bottom plate 6 by bolts, so that the prefabricated side plate 8 is vertically fixed on the upper surface of the prefabricated bottom plate 6.
S6: and D, filling sand and burying the pipeline.
a: the groove 9 is filled with sand so that the communication line 1 in the groove 9 is buried in the sand.
b: water is poured into the groove 9, so that the sand in the groove 9 is further settled, the sand in the groove 9 and the communication pipeline 1 form a compact whole, and the deep foundation pit 2 can be constructed. And through water filling, the sand in the groove 9 flows along with the water, and the gaps between the adjacent prefabricated side plates 8 and the gaps between the prefabricated side plates 8 and the prefabricated bottom plate 6 are filled.
S7: the communication line 1 is enclosed.
a: after water is poured into the groove 9, the deep foundation pit 2 is capped by using concrete, after the concrete on the peripheral side of the prefabricated side plate 8, which is lower than the upper part of the prefabricated side plate 8, reaches a set strength, the truss 5 and the upper suspension beam 71 are removed, and the suspension pull rod 73, which is higher than the upper part of the communication pipeline 1, is cut off.
b: the notches of the grooves 9 are covered by a plurality of prefabricated top plates 10, and the prefabricated top plates 10 and the prefabricated side plates 8 are fixed by bolts. The precast top panel 10 is a precast concrete block. The side walls of the adjacent prefabricated top plates 10 are mutually abutted, the upper surfaces of the prefabricated top plates 10 are located below the tops of the prefabricated side plates 8, the prefabricated top plates 10 and the prefabricated side plates 8 on the two sides of the communication pipeline 1 form a groove body 101, and the upper surfaces of the prefabricated top plates 10 are the groove bottom of the groove body 101.
c: pouring sand into the tank 101 so that the sand covers the upper surface of the prefabricated top plate 10 and is flush with the top of the prefabricated side plate 8.
d: and water is sprayed to the groove body 101, so that sand grains fill gaps between the adjacent prefabricated top plates 10 and gaps between the prefabricated top plates 10 and the prefabricated side plates 8.
e: and continuing the capping operation of the deep foundation pit 2 until the precast top plate 10 is poured and covered by concrete, so that the communication pipeline 1 is buried underground again.
In the whole construction process of the deep foundation pit 2, the communication pipeline 1 is not moved and changed, the original shape is kept, uninterrupted communication construction is realized, and the communication pipeline 1 is protected from collision and damage of construction machinery. And when the communication pipeline 1 is buried underground again, the groove 9 and the groove body 101 formed by the prefabricated bottom plate 6, the prefabricated side plates 8 and the prefabricated top plate 10 are used for containing gravel and supplemented with water, the gap between the prefabricated bottom plate 6 and the prefabricated side plates 8, the gap between the adjacent prefabricated top plates 10 and the gap between the prefabricated top plates 10 and the prefabricated side plates 8 are filled, the risk that concrete flows into the groove 9 to agglomerate during the capping operation of the deep foundation pit 2 is reduced, and the communication pipeline 1 buried underground is convenient to dig out and overhaul. Gravel is not only used for filling up the clearance in this application, still for prefabricated curb plate 8 and prefabricated bottom plate 6 provide the support, reduces the hollowing phenomenon, prefabricated curb plate 8 and the cracked risk of prefabricated bottom plate 6 when reducing the construction machinery collision.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A migration and modification method for in-situ protection of underground communication pipelines is characterized by comprising the following steps:
s1: communication pipeline (1) position determination: verifying the position of the communication pipeline (1) in detail by combining a pipeline drawing, and manually exploring and excavating the communication pipeline (1) in an operation range until the communication pipeline (1) is excavated;
s2: the side wall of the deep foundation pit (2) is provided with a foundation: building reinforcing piles (3) on the peripheral sides of the side walls of the deep foundation pit (2) positioned at two ends of the communication pipeline (1) in an operation range, and then pouring bearing tables (4) on the top of the reinforcing piles (3) in situ to enable the bearing tables (4) to be positioned above the communication pipeline (1);
s3: placing truss (5): placing the truss (5) on the surface of the bearing table (4), and enabling the truss (5) to be transversely placed above the communication pipeline (1) along the length direction of the communication pipeline (1);
s4: hanging communication pipeline (1): trenching an unearthed soil layer at the lower part of the communication pipeline (1) along the length direction of the communication pipeline (1), placing a plurality of prefabricated bottom plates (6), laying the prefabricated bottom plates (6) along the length direction of the communication pipeline (1), enabling the prefabricated bottom plates (6) to be abutted against the bottom of the communication pipeline (1), then connecting the prefabricated bottom plates (6) with a truss (5) by using a connecting piece (7), and suspending the communication pipeline (1) overhead.
2. The migration and modification method for in-situ protection of underground communication pipelines according to claim 1, wherein: the connecting piece (7) comprises an upper suspension beam (71), a lower suspension beam (72) and a suspension pull rod (73); the upper suspension beam (71) abuts against the top of the communication pipeline (1); the lower suspension beam (72) is used for connecting the prefabricated bottom plate (6) through bolts; two ends of the suspension pull rod (73) are respectively connected to the upper suspension beam (71) and the lower suspension beam (72) so as to cooperate with the truss (5) to suspend the communication pipeline (1).
3. The migration and modification method for in-situ protection of underground communication pipelines according to claim 2, wherein: when the prefabricated bottom plates (6) are connected with the lower suspension beams (72) through bolts, the adjacent prefabricated bottom plates (6) are connected with the same lower suspension beam (72) through bolts, so that gaps between the adjacent prefabricated bottom plates (6) are located right above the lower suspension beams (72).
4. The migration and modification method for in-situ protection of underground communication pipelines according to any one of claims 1 to 3, wherein: after the connection of the prefabricated bottom plates (6) and the connecting pieces (7) is completed, the prefabricated side plates (8) are installed on the upper surface of the prefabricated bottom plate (6) along the length direction of the communication pipeline (1), and the side walls of the adjacent prefabricated side plates (8) are mutually abutted, so that the communication pipeline (1) is located in a groove (9) formed by the prefabricated side plates (8) and the prefabricated bottom plates (6).
5. The migration and modification method for in-situ protection of underground communication pipelines according to claim 4, wherein: and filling sand into the groove (9) to embed the communication pipeline (1) in the groove (9) into the sand.
6. The migration and modification method for in-situ protection of underground communication pipelines according to claim 5, wherein: and after sand is filled into the groove (9), performing capping operation on the deep foundation pit (2) by using concrete, and removing the truss (5) and the connecting piece (7) which is higher than the preset height of the upper part of the communication pipeline (1) after the concrete which is lower than the upper surface of the prefabricated side plate (8) on the peripheral side of the prefabricated side plate (8) reaches the set strength.
7. The migration and modification method for in-situ protection of underground communication pipelines according to claim 5, wherein: after the communication pipeline (1) is buried in the sand, water is poured into the groove (9) so that the sand can be further settled in the groove (9).
8. The migration method for in-situ protection of underground communication pipelines according to claim 5, wherein: after the communication pipeline (1) is buried in the sand, the notch of the groove (9) is covered by using the prefabricated top plate (10).
9. The migration and modification method for in-situ protection of underground communication pipelines according to claim 8, wherein: and the prefabricated side plates (8) are fixedly connected with the prefabricated top plate (10) through bolts.
10. The migration and modification method for in-situ protection of underground communication pipelines according to claim 4, wherein: and connecting and fixing the prefabricated side plates (8) and the prefabricated bottom plate (6) by bolts.
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