CN117779841A - Anti-slip pipe shed support road base protection method - Google Patents
Anti-slip pipe shed support road base protection method Download PDFInfo
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- CN117779841A CN117779841A CN202311872649.8A CN202311872649A CN117779841A CN 117779841 A CN117779841 A CN 117779841A CN 202311872649 A CN202311872649 A CN 202311872649A CN 117779841 A CN117779841 A CN 117779841A
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- pipe
- door frame
- shed
- grouting
- pipe shed
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- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000010276 construction Methods 0.000 claims abstract description 36
- 239000011440 grout Substances 0.000 claims abstract description 5
- 239000002002 slurry Substances 0.000 claims description 43
- 229910000831 Steel Inorganic materials 0.000 claims description 36
- 239000010959 steel Substances 0.000 claims description 36
- 238000005520 cutting process Methods 0.000 claims description 21
- 238000005553 drilling Methods 0.000 claims description 21
- 230000000903 blocking effect Effects 0.000 claims description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 15
- 238000012546 transfer Methods 0.000 claims description 14
- 239000002689 soil Substances 0.000 claims description 9
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 5
- 239000004567 concrete Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 15
- 230000001681 protective effect Effects 0.000 description 10
- 238000013461 design Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000007569 slipcasting Methods 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000013508 migration Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention belongs to the technical field of underground passage construction, and particularly relates to an anti-slip pipe shed support road base protection method, which comprises the following steps: s1, excavating a working pit on one side of a pavement, installing roadbed protection piles and upright post piles of a door frame in roadbed around the pavement of a pipe shed construction site, installing pile caps on the upright post piles of the door frame, and installing protection beams on the roadbed protection piles; s2, installing an anti-moving pile in the roadbed at one side of the pavement far from the working pit, and filling grout and rubble at one side of the anti-moving pile far from the pavement; the invention prevents the roadbed from moving sideways in the construction process of the pipe shed and the jacking process of the subsequent box culvert, and the door frame is fixedly connected through the anti-moving support column, so that the occurrence of the lateral movement in the construction process is further prevented; the invention is easier to form an annular space, thereby improving the construction efficiency of the pipe shed; the invention efficiently forms the large cavity, avoids complex operation caused by the need of replacing the cutter, and simultaneously realizes the formation of the large cavity.
Description
Technical Field
The invention belongs to the technical field of underground passage construction, and particularly relates to an anti-slip pipe shed support road base protection method.
Background
Underground passageway construction refers to engineering processes that build or construct transit or transit facilities in an underground structure. The pipe shed construction of the underground passage is to ensure the stability, safety and sustainability of the underground passage. The supporting structure is more critical due to the particularities of the underground passage. The method of shotcrete, steel frame support and the like is generally adopted to ensure the stability and safety of the underground space. The underground passage pipe shed construction can protect constructors and equipment from collapse, geological disasters and other risks, improves the safety of construction, and meanwhile does not interrupt the running of ground vehicles.
The chinese patent of application No. CN202121335282.2 provides a protection architecture based on pipe shed method underground structure, wherein the intermediate wall is provided with the passageway along left and right directions, the left surface of earthing district is provided with the pit along left and right directions, passageway intercommunication pit, the bottom surface of passageway and the bottom surface of pit are all high with the bottom surface of basement, the stay tube sets up along left and right directions, the left end is located the basement, the intermediate wall is worn to establish by the left section of middle part and is located the top of passageway, the right-hand member of middle part is inlayed and is established in the top surface of pit, the right-hand member of stay tube is inserted and is established in the right half of the lower part of the left side of earthing district, the backup pad level sets up under the right-hand member of the middle part of stay tube and is connected with it, vertical support piece is located between the right-hand member of the bottom surface of pit and the middle part of stay tube and supports respectively and supports both, the quantity of stay tube is many, along the mutual interval setting of fore-and aft. The device can well protect the structure above the connection and the safety of constructors, has ingenious design, simple structure, simple and convenient construction and low cost, and is suitable for large-scale popularization and application.
In the process of pipe shed construction, if the operation is improper, the condition of foundation side shift easily takes place, leads to the incident such as collapse, and simultaneously according to different geological conditions, the pipe shed has the condition emergence of geological obstruction in the in-process of construction, and installs the annular space of pipe shed difficult shaping, leads to inefficiency.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides an anti-slip pipe shed supporting road base protection method, which prevents the occurrence of lateral movement of a roadbed in the pipe shed construction process and the subsequent box culvert jacking process, and further prevents the occurrence of lateral movement in the construction process by fixedly connecting a door frame through an anti-movement support column; the invention is easier to form an annular space, thereby improving the construction efficiency of the pipe shed; the invention efficiently forms the large cavity, avoids complex operation caused by the need of replacing the cutter, and simultaneously realizes the formation of the large cavity.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the anti-slip pipe shed support road base protection method comprises the following steps:
s1, excavating a working pit on one side of a pavement, installing roadbed protection piles and upright post piles of a door frame in roadbed around the pavement of a pipe shed construction site, installing pile caps on the upright post piles of the door frame, and installing protection beams on the roadbed protection piles;
s2, installing an anti-moving pile in the roadbed at one side of the pavement far from the working pit, and filling grout and rubble at one side of the anti-moving pile far from the pavement;
s3, constructing a pipe shed, fixing a drilling machine on a working pit foundation through a ground anchor seat and a rear support, adjusting a drill rod, drilling the drill rod into the center of a pipe position designed at the construction position of the pipe shed, drilling along a horizontal straight line, simultaneously pouring slurry into the drill rod, and spraying the slurry from a drill bit to form a small cavity; after a drill rod drills out from a designed pipe position, connecting one end of a drill bit with a pipeline through a transfer case, adjusting the drill bit to enlarge the diameter expansion range of the drill bit, pulling back the pipeline in a traction mode, drilling the drill rod in the opposite direction in the pulling back process, simultaneously pouring slurry, and reaming a small cavity to form a large cavity; after the pipeline is pulled back to a preset position, the transfer case is disassembled, one end of the pipeline is blocked, and concrete is poured on the other end of the pipeline, so that pipe shed construction is realized;
s4, after the pipe shed is in place, installing a door frame column on a pile cap of the upright post pile, jointly installing door frame beams on the door frame column on the same side, abutting the pipe shed through the door frame column and the door frame beams, then installing an anti-moving beam on the anti-moving pile, and fixedly installing an anti-moving support column between the anti-moving beam and the adjacent door frame beams.
Further, the slurry comprises the following components in percentage by mass: expansive soil: 35% -45%, caustic soda: 0.5 to 0.8 percent of water: 65% -55% of the slurry is uniformly mixed before pouring.
The pipe shed is inserted into the roadbed and is positioned below the road surface; the pipe shed comprises first pipe shed steel pipes and second pipe shed steel pipes, wherein a plurality of the first pipe shed steel pipes are horizontally and uniformly distributed, the distribution direction is the same as the direction of a road surface lane, and the first pipe shed steel pipes are perpendicular to the direction of the road surface lane; two rows of second pipe shed steel pipes are vertically and uniformly distributed, and the second pipe shed steel pipes at the top end of each row are respectively positioned below the first pipe shed steel pipes at the left end and the right end to form a shed-shaped structure; the first pipe shed steel pipe and the second pipe shed steel pipe are parallel to each other; the two ends of the pipe shed are respectively abutted to the door frames, and the door frames are positioned on the outer sides of the pavement.
Further, the door frame comprises two upright posts, the upright posts are inserted into the roadbed, a pile cap is fixed at the top end of each upright post, a door frame column is fixed at the top end of each pile cap, and the second pipe-shed steel pipe is abutted to the door frame column; the top ends of two door frame columns positioned on the same side of the road surface are jointly fixed with a door frame beam, and the first pipe shed steel pipe is abutted to the door frame beam.
Further, one side of one door frame far away from the pipe shed is provided with an anti-moving structure, the anti-moving structure comprises anti-moving piles, a plurality of the anti-moving piles are inserted on the roadbed, and the anti-moving piles are uniformly distributed along the road surface lane direction; the top of many anti-moving piles is fixed with anti-moving beam jointly, the one side that anti-moving beam is close to the pipe canopy is fixed with many anti-moving support columns, many anti-moving support columns level evenly lay and with adjacent door frame roof beam fixed connection.
Still further, the anti-moving beam is parallel to the adjacent door frame beam, and the anti-moving support column is perpendicular to the anti-moving beam.
Furthermore, the periphery of the pipe shed is provided with a protection structure, and the protection structure is positioned at the outer side of the pavement; the protection structure comprises a first road base protection pile, wherein a plurality of first road base protection piles are inserted into the roadbed and are uniformly distributed along the road surface lane direction; the inner side of the first road base protective pile close to the door frame is also provided with a second roadbed protective pile, and the top of the first road base protective pile and the top of the second roadbed protective pile of each protective structure are jointly fixed with a protective beam.
Further, the drill bit includes into thick liquid pipe, the one end and the rig that advance thick liquid pipe are connected, and the other end intercommunication that advances thick liquid pipe has the slip casting head, advance thick liquid pipe includes into thick liquid pipe wall, evenly offered a plurality of rotation holes on the thick liquid pipe wall, install the regulation cutter on the rotation hole, the regulation cutter includes the jackshaft, the jackshaft rotates on with the rotation hole to be connected, jackshaft fixed mounting has the arc cutting board, the arc cutting board is located the outside of advancing thick liquid pipe and is located near slip casting head one side, the arc cutting board includes the arc siding wall, the outside of arc siding wall evenly is fixed and is equipped with first tool bit.
Further, the grouting head is of a conical structure, a plurality of first grouting holes are uniformly formed in the outer side of the grouting head, and a transfer case connector is fixedly connected to one end, away from the grouting pipe, of the grouting head.
Further, a plurality of grooves are uniformly formed in the wall of the slurry inlet pipe, the grooves are positioned on one side close to the rotating holes, a slurry injection pipe is arranged between the arc-shaped cutting board and the slurry inlet pipe, one end of the slurry injection pipe is in sliding connection with the grooves, and the other end of the slurry injection pipe is in rotating connection with one end of the arc-shaped cutting board; the grouting pipe is closed at one end close to the arc-shaped cutting board, one end close to the groove of the grouting pipe is opened, the grouting pipe comprises a grouting pipe wall, a plurality of second grouting holes are uniformly formed in the grouting pipe wall along the axial direction, and second cutter heads are fixedly arranged between every two adjacent second grouting holes; the inside of recess runs through and has offered the through-hole, the through-hole is located the recess and keeps away from one side of swivelling joint hole.
Further, a first rotating bracket with a hole is fixedly arranged at the closed end of the grouting pipe, a rotating groove is formed in one end, far away from the intermediate shaft, of the arc-shaped cutting board, a first rotating shaft is fixedly connected to the rotating groove, and the first rotating bracket is connected with the first rotating shaft in a rotating mode; the grouting device comprises a grouting pipe, a first rotating shaft, a second rotating shaft, a groove, a holding groove, a sealing plate, a rotating rod and a rotating rod, wherein the two sides of the opening end of the grouting pipe are fixedly provided with the second rotating shaft, the axial side wall of the groove is provided with the sliding groove, the second rotating shaft is in sliding connection with the sliding groove, the side wall of the groove away from the rotating hole is provided with the holding groove, the sealing plate is movably arranged in the holding groove, one end of the sealing plate is fixedly connected with the rotating rod, and one end of the rotating rod is rotationally connected with the second rotating shaft.
Further, the both ends of jackshaft are fixed to be equipped with and rotate the arch, rotate protruding and rotate the hole and rotate and be connected, the one end that the arc cutting board is close to the jackshaft is fixed to be equipped with foraminiferous second and rotate the support, install fixing bolt on the jackshaft, second rotates support and jackshaft fixed connection through fixing bolt.
Still further, fixed connection has the barrier plate on the jackshaft, the barrier plate is fan-shaped structure, the barrier plate is located the inside of advance thick liquid pipe, thereby the rotation of jackshaft can make a plurality of barrier plates form seal structure jointly and block mud, and the open end and the through-hole intercommunication of slip casting pipe this moment.
Still further, the first tool bit and the second tool bit are both obliquely arranged.
Compared with the prior art, the invention has the following beneficial effects:
(1) According to the invention, the roadbed protection piles and the upright post piles of the door frame are arranged in the roadbed around the road surface at the construction position of the pipe shed, so that the two sides of the roadbed are reinforced, the roadbed is prevented from moving sideways in the construction process of the pipe shed and the jacking process of the subsequent box culvert, the stress surface of the roadbed is supported by the anti-moving piles and the structural design of filling grout rubble, the roadbed is further prevented from moving sideways, and then the pipe shed is constructed; the pipe shed is abutted through the structure of the door frame, so that the situation that the pipe shed moves sideways in the process of soil taking and box culvert jacking is prevented; simultaneously through the support of anti structure at the construction tail end, carry out fixed connection to the door frame through anti support column that moves, further prevent that the condition of side shifting from taking place in the work progress.
(2) When the pipe shed is constructed, drill cuttings are more easily discharged out of the hole by using slurry and a drill bit, so that an annular space is formed, the wall protection effect is achieved by expanding the components of soil, then the viscosity of the slurry is enhanced by combining caustic soda, and the forming and wall protection effects of the annular space are further improved.
(3) According to the invention, through the structural design of the adjusting cutter and the grouting pipe, when the drill bit drills forward for the first time, the arc-shaped cutting board is folded in the direction of the grouting pipe, at the moment, the second rotating shaft of the grouting pipe slides in the direction of the grouting head on the sliding groove, at the moment, the sealing board seals the through hole, the blocking board is in an open state, mud can be drilled from the first grouting Kong Chujiang together with the first cutter head to form a small cavity effectively, after the drill rod drills out from the designed pipe position, the drill rod drills in the opposite direction in the process of pulling back, at the moment, the arc-shaped cutting board expands the drilling outer diameter, the second rotating shaft of the grouting pipe slides to the through hole, at the moment, the opening end of the grouting pipe is communicated with the through hole, and the blocking boards form a sealing structure, at the moment, mud can drill back from the second grouting Kong Chujiang of the grouting pipe in cooperation with the second cutter head, so that a large cavity is formed efficiently, the operation complexity caused by the need of replacing the cutter is avoided, and meanwhile, the formation of the large cavity is realized.
(4) The invention has strong feasibility in the construction process, has been practically applied, can be copied and popularized, and can obtain larger economic benefit and popularization prospect after being applied compared with the traditional process.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of a protective structure according to the present invention;
FIG. 3 is a schematic view of a pipe shed structure according to the present invention;
FIG. 4 is a schematic view of a door frame and anti-migration structure of the present invention;
FIG. 5 is a schematic diagram of the whole structure of the second embodiment of the present invention;
FIG. 6 is a schematic view of the overall structure of the drill bit of the present invention;
FIG. 7 is a schematic view of a dispersion structure of a drill bit according to the present invention;
FIG. 8 is a schematic view of a feed pipe of the drill bit of the present invention;
FIG. 9 is a schematic view of the adjusting tool portion of the drill bit of the present invention;
FIG. 10 is a schematic view of the adjusting tool configuration of the drill bit of the present invention;
FIG. 11 is a schematic cross-sectional view of a drill bit according to the present invention;
fig. 12 is a schematic view of a grouting pipe structure of the drill bit of the present invention.
The reference numerals are as follows:
a slurry inlet pipe, 100; a pulp inlet pipe wall 110; grooves 111; a sliding groove 112; a through hole 113; a receiving groove 114; a rotation hole 115; a grouting head 120; a first grouting hole 121; transfer case joints 130; adjusting the cutter 200; a blocking plate 210; an intermediate shaft 220; rotating the protrusions 221; a fixing bolt 230; an arc-shaped knife plate 240; arc-shaped panel walls 241; rotating the grooves, 242; a first rotating shaft 243; first tool bits, 244; a second rotating bracket 245; grouting pipe, 300; grouting pipe wall 310; a second grouting hole 320; a second cutter head 330; a first rotating bracket 340; a second rotating shaft 350; a closing plate 360; a rotating lever 370; a protective structure 400; first road base guard piles, 410; a second roadbed protection pile 420; a guard beam 430; a door frame 500; upright posts, 510; pile cap 520; a door frame post 530; a door frame beam 540; a pipe shed 600; a first pipe shed steel pipe 610; a second pipe shed steel pipe 620; an anti-migration structure 700; anti-displacement piles 710; an anti-migration beam 720; anti-migration support columns, 730.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following examples. Of course, the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Although the steps of the present invention are arranged by reference numerals, the order of the steps is not limited, and the relative order of the steps may be adjusted unless the order of the steps is explicitly stated or the execution of a step requires other steps as a basis. It is to be understood that the term "and/or" as used herein relates to and encompasses any and all possible combinations of one or more of the associated listed items.
Examples
As shown in fig. 1 to 12, the method for protecting the anti-slip pipe shed support road base comprises the following steps:
s1, excavating a working pit on one side of a pavement, installing roadbed protection piles and upright post piles 510 of a door frame 500 in roadbed around the pavement where a pipe shed 600 is constructed, installing pile caps 520 on the upright post piles 510 of the door frame 500, and installing protection beams 430 on the roadbed protection piles;
s2, installing an anti-moving pile 710 in the roadbed at one side of the pavement far from the working pit, and filling grout and rubble at one side of the anti-moving pile 710 far from the pavement;
s3, constructing a pipe shed 600, fixing a drilling machine on a working pit foundation through a ground anchor seat and a rear support, adjusting a drill rod, drilling the drill rod into the center of a pipe position designed at the construction position of the pipe shed 600, drilling along a horizontal straight line, simultaneously pouring slurry into the drill rod, and spraying the slurry from a drill bit to form a small cavity; after a drill rod drills out from a designed pipe position, connecting one end of a drill bit with a pipeline through a transfer case, adjusting the drill bit to enlarge the diameter expansion range of the drill bit, pulling back the pipeline in a traction mode, drilling the drill rod in the opposite direction in the pulling back process, simultaneously pouring slurry, and reaming a small cavity to form a large cavity; after the pipeline is pulled back to a preset position, the transfer case is disassembled, one end of the pipeline is blocked, and concrete is poured on the other end of the pipeline, so that the construction of the pipe shed 600 is realized;
s4, after the pipe shed 600 is in place, installing a door frame column 530 on the pile cap 520 of the upright post 510, jointly installing door frame beams 540 on the door frame column 530 on the same side, abutting the pipe shed 600 through the door frame column 530 and the door frame beams 540, then installing an anti-moving beam 720 on the anti-moving pile 710, and fixedly installing an anti-moving support column 730 between the anti-moving beam 720 and the adjacent door frame beams 540.
According to the invention, the roadbed protection piles and the upright post piles of the door frame are arranged in the roadbed around the road surface at the construction position of the pipe shed, so that the two sides of the roadbed are reinforced, the roadbed is prevented from moving sideways in the construction process of the pipe shed and the jacking process of a subsequent box culvert, the stress surface of the roadbed is supported through the structural design of the anti-moving piles and the filling grouting rubble, the roadbed is further prevented from moving sideways, and then the pipe shed is constructed.
The pipe shed 600 is inserted into the roadbed and is positioned below the road surface; the pipe shed 600 comprises a first pipe shed steel pipe 610 and a second pipe shed steel pipe 620, wherein a plurality of the first pipe shed steel pipes 610 are horizontally and uniformly distributed, the distribution direction is the same as the direction of the road surface lane, and the first pipe shed steel pipes 610 are vertical to the direction of the road surface lane; two rows of second pipe-shed steel pipes 620 are vertically and uniformly distributed, and the second pipe-shed steel pipes 620 at the top end of each row are respectively positioned below the first pipe-shed steel pipes 610 at the left end and the right end to form a shed-shaped structure; the first pipe-shed steel pipe 610 and the second pipe-shed steel pipe 620 are parallel to each other; the two ends of the pipe shed 600 are respectively abutted against the door frames 500, and the door frames 500 are positioned on the outer sides of the road surfaces.
The invention supports the interior of the roadbed through the structure of the pipe shed 600, thereby ensuring that the road surface can not collapse in the processes of taking soil below the pipe shed 600 and jacking the box culvert, improving the construction safety and avoiding interrupting the traffic of the road surface in the construction process; the pipe shed 600 is abutted through the structure of the door frame 500, so that the situation that the pipe shed 600 moves sideways in the process of soil taking and box culvert jacking is prevented.
Further, the door frame 500 includes two upright posts 510, the upright posts 510 are inserted into the roadbed, a pile cap 520 is fixed at the top end of the upright posts 510, a door frame column 530 is fixed at the top end of the pile cap 520, and the second pipe-shed steel pipe 620 is abutted to the door frame column 530; the top ends of two door frame columns 530 positioned on the same side of the road surface are jointly fixed with a door frame beam 540, and the first pipe shed steel pipe 610 is abutted against the door frame beam 540.
The upright post piles 510 of the doorframe 500 are inserted into the roadbed, and then the tube shed 600 is supported in an abutting manner through the doorframe columns 530 and the doorframe beams 540, so that the stability of the doorframe 500 is improved, the construction operation below the tube shed 600 is not hindered, and the construction efficiency is improved.
Further, one side of the door frame 500 away from the pipe shed 600 is provided with an anti-moving structure 700, the anti-moving structure 700 comprises anti-moving piles 710, a plurality of the anti-moving piles 710 are inserted on the roadbed, and the anti-moving piles 710 are uniformly distributed along the road lane direction; the top ends of the plurality of anti-moving piles 710 are fixed with anti-moving beams 720 together, one side of each anti-moving beam 720 close to the pipe shed 600 is fixed with a plurality of anti-moving support columns 730, and the plurality of anti-moving support columns 730 are horizontally and uniformly distributed and fixedly connected with the adjacent door frame beams 540.
Through the support of anti-moving structure 700 at the construction tail end, carry out fixed connection through anti-moving support column 730 to door frame 500, further prevent the condition emergence of side moving in the work progress.
Still further, the anti-moving beam 720 is parallel to the adjacent door frame beam 540, and the anti-moving support column 730 is perpendicular to the anti-moving beam 720.
Furthermore, the protective structures 400 are arranged around the pipe shed 600, and the protective structures 400 are positioned outside the pavement; the protection structure 400 includes a first road base protection pile 410, and a plurality of first road base protection piles 410 are inserted into the roadbed and uniformly distributed along the road surface lane direction; the inner side of the first road base protection pile 410 close to the door frame 500 is also provided with a second road base protection pile 420, and the top parts of the first road base protection pile 410 and the second road base protection pile 420 of each protection structure 400 are jointly fixed with a protection beam 430.
According to the invention, the protection structure 400 is arranged around the pipe shed 600, the roadbed around the pipe shed 600 can be effectively blocked and protected through the first roadbed protection piles 410, the roadbed is prevented from collapsing, meanwhile, the roadbed close to the pipe shed 600 can be further reinforced through the second roadbed protection piles 420, and the roadbed is comprehensively protected and prevented from collapsing.
Further, the slurry comprises the following components in percentage by mass: expansive soil: 35% -45%, caustic soda: 0.5 to 0.8 percent of water: 65% -55% of the slurry is uniformly mixed before pouring.
When the pipe shed is constructed, drill cuttings are more easily discharged out of the holes by using mud matched with the drill bit so as to form an annular space, the wall protection effect is achieved by expanding the soil components, then the viscosity of the mud is enhanced by combining caustic soda, and the forming and wall protection effects of the annular space are further improved.
Compared with the conventional direct drilling, the invention has the advantages that the drill rod is drilled into the small cavity through the dragging process, the probability of encountering hard soil blocks in the drilling process is reduced, so that an annular space is easier to form, then the drill rod is drilled back in a dragging mode to form the large cavity, the large cavity is easier to form, and then the pipeline is dragged to a designated position, so that the construction efficiency of the pipe shed is improved.
Further, the drill bit includes the advance thick liquid pipe 100, the one end and the rig of advance thick liquid pipe 100 are connected, the other end intercommunication of advance thick liquid pipe 100 has slip casting head 120, advance thick liquid pipe 100 includes advance thick liquid pipe wall 110, advance and evenly seted up a plurality of rotation holes 115 on the thick liquid pipe wall 110, install the regulation cutter 200 on the rotation hole, the regulation cutter 200 includes jackshaft 220, jackshaft 220 is connected with rotation hole 115 on rotation, jackshaft 220 fixed mounting has arc cutting board 240, arc cutting board 240 is located the outside of advance thick liquid pipe 100 and is located near slip casting head 120 one side, arc cutting board 240 includes arc board wall 241, the outside of arc board wall 241 is evenly fixed and is equipped with first tool bit 244. Further, the grouting head 120 has a conical structure, a plurality of first grouting holes 121 are uniformly formed on the outer side of the grouting head 120, and a transfer case joint 130 is fixedly connected to one end of the grouting head 120 away from the grouting pipe 100.
It should be noted that, the transfer case joint 130 is used for connecting a transfer case, and the transfer case and a pipeline are welded in a manner to realize connection between a drill bit and the pipeline so as to facilitate dragging, and the transfer case is conventionally arranged and has a connection function, which is not described in detail herein.
Meanwhile, one end of the slurry inlet pipe 100 is connected to a drilling machine, which performs drilling work of a drill bit while delivering slurry to the slurry inlet pipe 100, which is a conventional art, and will not be described in detail herein.
Further, a plurality of grooves 111 are uniformly formed on the grouting pipe wall 110, the grooves 111 are located at one side close to the rotation hole 115, a grouting pipe 300 is arranged between the arc-shaped blade 240 and the grouting pipe 100, one end of the grouting pipe 300 is slidably connected with the grooves 111, and the other end of the grouting pipe 300 is rotatably connected with one end of the arc-shaped blade 240; one end of the grouting pipe 300, which is close to the arc-shaped cutting board 240, is closed, one end of the grouting pipe 300, which is close to the groove 111, is opened, the grouting pipe 300 comprises a grouting pipe wall 310, a plurality of second grouting holes 320 are uniformly formed in the grouting pipe wall 310 along the axial direction, and second cutter heads 330 are fixedly arranged between every two adjacent second grouting holes 320; the inside of the groove 111 is provided with a through hole 113 in a penetrating way, and the through hole 113 is positioned at one side of the groove 111 away from the rotating hole 115.
When the drill bit is first drilled forward, the arc-shaped blade 240 is folded toward the grouting pipe 100, and the grouting pipe 300 slides toward the grouting head 120.
Further, a first rotating bracket 340 with a hole is fixedly arranged at the closed end of the grouting pipe 300, a rotating groove 242 is formed at one end of the arc-shaped blade 240 far away from the intermediate shaft 220, a first rotating shaft 243 is fixedly connected to the rotating groove 242, and the first rotating bracket 340 is rotatably connected with the first rotating shaft 243; the second rotating shafts 350 are fixedly arranged on two sides of the opening end of the grouting pipe 300, the sliding grooves 112 are formed in the axial side walls of the grooves 111, the second rotating shafts 350 are in sliding connection with the sliding grooves 112, the accommodating grooves 114 are formed in the side walls, far away from the rotating holes 115, of the grooves 111, the sealing plates 360 are movably arranged in the accommodating grooves 114, one ends of the sealing plates 360 are fixedly connected with rotating rods 370, and one ends of the rotating rods 370 are in rotating connection with the second rotating shafts 350.
When the grouting pipe 300 slides toward the grouting head 120, the closing plate 360 closes the through hole 113.
It should be noted that, the sealing plate 360 is used to seal the through hole 113, and the power is large during the slurry conveying process, so that the complete sealing effect is not required, only the conveying direction of most of the slurry is required to be changed, and the same applies to the blocking plate 210 described below.
Further, two ends of the intermediate shaft 220 are fixedly provided with rotating protrusions 221, the rotating protrusions 221 are rotationally connected with the rotating holes 115, one end, close to the intermediate shaft 220, of the arc-shaped knife board 240 is fixedly provided with a second rotating bracket 245 with holes, the intermediate shaft 220 is provided with a fixing bolt 230, and the second rotating bracket 245 is fixedly connected with the intermediate shaft 220 through the fixing bolt 230.
The invention enables the arc-shaped blade 240 to be capable of adjusting and replacing the angle through the structural design of the fixing bolt 230 and the arc-shaped blade 240, is convenient to maintain and is better suitable for drilling pipelines with different pipe diameters.
Further, the intermediate shaft 220 is fixedly connected with a blocking plate 210, the blocking plate 210 has a fan-shaped structure, the blocking plate 210 is located inside the slurry inlet pipe 100, and the rotation of the intermediate shaft 220 can make the plurality of blocking plates 210 together form a sealing structure to block slurry, and at this time, the open end of the slurry inlet pipe 300 is communicated with the through hole 113.
After the drill rod drills out from the designed pipe position, the drill rod drills in the opposite direction in the process of pulling back, at this time, the arc-shaped cutting plate 240 is opened to enlarge the drilling outer diameter, the second rotating shaft 350 of the grouting pipe 300 slides to the through hole 113, and at this time, the open end of the grouting pipe 300 is communicated with the through hole 113.
When the blocking plate 210 is in an open state, mud may be discharged from the first grouting holes 121, and when the blocking plate 210 forms a closed structure, mud may be discharged from the second grouting holes 320 of the grouting pipe 300.
Further, the first tool bit 244 and the second tool bit 330 are both disposed at an incline. Through the first tool bit 244 and the second tool bit 330 that the slope set up, make the drill bit more easily creep into, and then further promote and creep into efficiency.
According to the invention, through the structural design of the adjusting cutter 200 and the grouting pipe 300, when a drill bit drills forward for the first time, the arc-shaped cutter plate 240 is folded towards the grouting pipe 100, at the moment, the second rotating shaft 350 of the grouting pipe 300 slides towards the grouting head 120 on the sliding groove 112, at the moment, the through hole 113 is sealed by the sealing plate 360, the blocking plate 210 is in an open state, slurry can be discharged from the first grouting hole 121 and effectively drills into a small cavity by matching with the first cutter head 244, after a drill rod drills into the designed pipe position, the drill rod drills into the opposite direction in the process of pulling back, at the moment, the arc-shaped cutter plate 240 expands the drilling outer diameter, the second rotating shaft 350 of the grouting pipe 300 slides to the through hole 113, at the moment, the open end of the grouting pipe 300 is communicated with the through hole 113, and the plurality of blocking plates 210 form a sealing structure, at the moment, slurry can be discharged from the second grouting hole 320 of the grouting pipe 300, and is pulled back by matching with the second cutter head 330, so that a large cavity is efficiently formed, the operation is complicated by matching with the cutter head 330, and meanwhile, the formation of a large cavity is realized.
The invention has strong feasibility in the construction process, has been practically applied, can be copied and popularized, and can obtain larger economic benefit and popularization prospect after being applied compared with the traditional process.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and changes can be made by those skilled in the art without departing from the inventive concept and remain within the scope of the invention.
Claims (10)
1. The anti-slip pipe shed support road base protection method is characterized by comprising the following steps of:
s1, excavating a working pit on one side of a pavement, installing roadbed protection piles and upright post piles (510) of a door frame (500) in roadbed around the pavement where a pipe shed (600) is constructed, installing pile caps (520) on the upright post piles (510) of the door frame (500), and installing protection beams (430) on the roadbed protection piles;
s2, installing an anti-moving pile (710) in the roadbed at one side of the pavement far from the working pit, and filling grout and rubble at one side of the anti-moving pile (710) far from the pavement;
s3, constructing a pipe shed (600), fixing a drilling machine on a foundation of a working pit through a ground anchor seat and a rear support, adjusting a drill rod, drilling the drill rod into a designed pipe position center of a construction position of the pipe shed (600), drilling along a horizontal straight line, simultaneously pouring slurry into the drill rod, and spraying the slurry from a drill bit to form a small cavity; after a drill rod drills out from a designed pipe position, connecting one end of a drill bit with a pipeline through a transfer case, adjusting the drill bit to enlarge the diameter expansion range of the drill bit, pulling back the pipeline in a traction mode, drilling the drill rod in the opposite direction in the pulling back process, simultaneously pouring slurry, and reaming a small cavity to form a large cavity; after the pipeline is pulled back to a preset position, the transfer case is disassembled, one end of the pipeline is blocked, and concrete is poured on the other end of the pipeline, so that the construction of a pipe shed (600) is realized;
s4, after the pipe shed (600) is in place, installing a door frame column (530) on a pile cap (520) of the upright post pile (510), jointly installing door frame beams (540) on the door frame column (530) on the same side, abutting the pipe shed (600) through the door frame column (530) and the door frame beams (540), then installing an anti-moving beam (720) on the anti-moving pile (710), and fixedly installing an anti-moving support column (730) between the anti-moving beam (720) and the adjacent door frame beams (540).
2. The method for protecting the anti-slip pipe shed support road base according to claim 1, wherein the slurry comprises the following components in percentage by mass: expansive soil: 35% -45%, caustic soda: 0.5 to 0.8 percent of water: 65% -55% of the slurry is uniformly mixed before pouring.
3. The method for protecting the anti-slip pipe shed support road base according to claim 1, comprising a pipe shed (600), wherein the pipe shed (600) is inserted into the roadbed and is positioned below the road surface; the pipe shed (600) comprises first pipe shed steel pipes (610) and second pipe shed steel pipes (620), wherein a plurality of the first pipe shed steel pipes (610) are horizontally and uniformly distributed, the distribution direction is the same as the pavement lane direction, and the first pipe shed steel pipes (610) are perpendicular to the pavement lane direction; two rows of second pipe-shed steel pipes (620) are vertically and uniformly distributed, and the second pipe-shed steel pipes (620) at the top end of each row are respectively positioned below the first pipe-shed steel pipes (610) at the left end and the right end to form a shed-shaped structure; the first pipe shed steel pipe (610) and the second pipe shed steel pipe (620) are parallel to each other; two ends of the pipe shed (600) are respectively abutted against a door frame (500), and the door frame (500) is positioned on the outer side of a road surface.
4. The protection method for the anti-slip pipe shed support road base according to claim 3, wherein the door frame (500) comprises two upright posts (510), the upright posts (510) are inserted into the roadbed, pile caps (520) are fixed at the top ends of the upright posts (510), door frame columns (530) are fixed at the top ends of the pile caps (520), and the second pipe shed steel pipes (620) are abutted to the door frame columns (530); the top ends of two door frame columns (530) positioned on the same side of the road surface are fixedly provided with door frame beams (540) together, and the first pipe shed steel pipe (610) is abutted to the door frame beams (540); one side, far away from the pipe shed (600), of the door frame (500) is provided with an anti-moving structure (700), the anti-moving structure (700) comprises anti-moving piles (710), a plurality of anti-moving piles (710) are inserted on a roadbed, and the anti-moving piles (710) are uniformly distributed along the direction of a pavement lane; the top ends of the anti-moving piles (710) are fixedly provided with anti-moving beams (720) together, one side of each anti-moving beam (720) close to the pipe shed (600) is fixedly provided with a plurality of anti-moving support columns (730), and the plurality of anti-moving support columns (730) are horizontally and uniformly distributed and fixedly connected with adjacent door frame beams (540).
5. The method for protecting the support road base of the anti-slip pipe shed according to claim 4, wherein the periphery of the pipe shed (600) is provided with a protecting structure (400), and the protecting structure (400) is positioned outside a road surface; the protection structure (400) comprises a first road base protection pile (410), and a plurality of first road base protection piles (410) are inserted into the roadbed and are uniformly distributed along the road surface lane direction; the inner side of the first road base protection pile (410) close to the door frame (500) is also provided with a second road base protection pile (420), and protection beams (430) are jointly fixed at the tops of the first road base protection pile (410) and the second road base protection pile (420) of each protection structure (400).
6. The anti-slip pipe shed support road base protection method according to claim 1, wherein the drill bit comprises a slurry inlet pipe (100), one end of the slurry inlet pipe (100) is connected with a drilling machine, the other end of the slurry inlet pipe (100) is communicated with a grouting head (120), the slurry inlet pipe (100) comprises a slurry inlet pipe wall (110), a plurality of rotating holes (115) are uniformly formed in the slurry inlet pipe wall (110), an adjusting cutter (200) is mounted on the rotating holes, the adjusting cutter (200) comprises an intermediate shaft (220), the intermediate shaft (220) is rotatably connected with the rotating holes (115), the intermediate shaft (220) is fixedly provided with an arc cutter plate (240), the arc cutter plate (240) is positioned on the outer side of the slurry inlet pipe (100) and is positioned on one side close to the grouting head (120), the arc cutter plate (240) comprises an arc plate wall (241), and a first cutter head (244) is uniformly and fixedly arranged on the outer side of the arc plate wall (241);
the utility model discloses a rotary knife blade, including jackshaft (220), arc-shaped knife blade (240), jackshaft (220) are fixed to be equipped with at both ends of jackshaft (220) and rotate protruding (221), rotate protruding (221) and rotate hole (115) and rotate and be connected, arc-shaped knife blade (240) are close to one end of jackshaft (220) and are fixed be equipped with foraminiferous second rotation support (245), install fixing bolt (230) on jackshaft (220), second rotation support (245) pass through fixing bolt (230) and jackshaft (220) fixed connection.
7. The method for protecting the road base of the anti-slip pipe shed according to claim 6, wherein the grouting head (120) is of a conical structure, a plurality of first grouting holes (121) are uniformly formed in the outer side of the grouting head (120), and a transfer case joint (130) is fixedly connected to one end, far away from the grouting pipe (100), of the grouting head (120).
8. The method for protecting the road base of the anti-slip pipe shed according to claim 6, characterized in that a plurality of grooves (111) are uniformly formed in the pipe wall (110) of the grouting pipe, the grooves (111) are positioned on one side close to the rotating hole (115), a grouting pipe (300) is arranged between the arc-shaped cutting board (240) and the grouting pipe (100), one end of the grouting pipe (300) is in sliding connection with the grooves (111), and the other end of the grouting pipe (300) is in rotating connection with one end of the arc-shaped cutting board (240); one end of the grouting pipe (300) close to the arc-shaped cutting board (240) is closed, one end of the grouting pipe (300) close to the groove (111) is opened, the grouting pipe (300) comprises a grouting pipe wall (310), a plurality of second grouting holes (320) are uniformly formed in the grouting pipe wall (310) along the axial direction, and second cutter heads (330) are fixedly arranged between every two adjacent second grouting holes (320); through holes (113) are formed in the grooves (111) in a penetrating mode, and the through holes (113) are located on one side, away from the rotating holes (115), of the grooves (111).
9. The method for protecting the road base of the anti-slip pipe shed according to claim 8, characterized in that a first rotating bracket (340) with holes is fixedly arranged at the closed end of the grouting pipe (300), a rotating groove (242) is formed at one end of the arc-shaped cutting board (240) far away from the intermediate shaft (220), a first rotating shaft (243) is fixedly connected to the rotating groove (242), and the first rotating bracket (340) is rotationally connected with the first rotating shaft (243); the grouting device is characterized in that second rotating shafts (350) are fixedly arranged on two sides of the opening end of the grouting pipe (300), sliding grooves (112) are formed in the axial side walls of the grooves (111), the second rotating shafts (350) are in sliding connection with the sliding grooves (112), accommodating grooves (114) are formed in the side walls, far away from the rotating holes (115), of the grooves (111), a sealing plate (360) is movably arranged in the accommodating grooves (114), one end of the sealing plate (360) is fixedly connected with a rotating rod (370), and one end of the rotating rod (370) is connected with the second rotating shaft (350) in a rotating mode.
10. The method for protecting the road base of the anti-slip pipe shed according to claim 9, characterized in that a blocking plate (210) is fixedly connected to the intermediate shaft (220), the blocking plate (210) is in a fan-shaped structure, the blocking plate (210) is located in the slurry inlet pipe (100), the rotation of the intermediate shaft (220) can enable the blocking plates (210) to jointly form a sealing structure so as to block slurry, and at the moment, the opening end of the slurry inlet pipe (300) is communicated with the through hole (113).
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| CN202311872649.8A CN117779841B (en) | 2023-12-29 | 2023-12-29 | Anti-slip pipe shed support road base protection method |
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| CN112696207A (en) * | 2020-12-21 | 2021-04-23 | 中铁十局集团第七工程有限公司 | Construction method of overlong large pipe shed of shallow-buried bias-pressure underground excavation tunnel |
| US20220106879A1 (en) * | 2020-05-28 | 2022-04-07 | China Construction Seventh Bureau Transportation Construction Co., Ltd. | Construction method for entering shallow-buried multi-arch tunnel under water-rich geological conditions |
| CN114809014A (en) * | 2022-05-16 | 2022-07-29 | 兰州理工大学 | Construction method of pile-anchor combined supporting structure with unloading pipe shed |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201517A (en) * | 2015-11-11 | 2015-12-30 | 中铁二十局集团有限公司 | Advance support construction method for high-strength pipe shed of tunnel |
| KR101636261B1 (en) * | 2015-12-29 | 2016-07-07 | 우경기술주식회사 | Pipe roof tunnel construction method using guide beam and protrusion-type steel rib which enables pressurization |
| CN111188638A (en) * | 2020-04-01 | 2020-05-22 | 黄河勘测规划设计研究院有限公司 | Advanced support pipe shed structure under silty-fine sand geological condition and construction method thereof |
| US20220106879A1 (en) * | 2020-05-28 | 2022-04-07 | China Construction Seventh Bureau Transportation Construction Co., Ltd. | Construction method for entering shallow-buried multi-arch tunnel under water-rich geological conditions |
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| CN114809014A (en) * | 2022-05-16 | 2022-07-29 | 兰州理工大学 | Construction method of pile-anchor combined supporting structure with unloading pipe shed |
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