CN117662177A - Pipe shed construction method based on dragging process - Google Patents
Pipe shed construction method based on dragging process Download PDFInfo
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- CN117662177A CN117662177A CN202311867165.4A CN202311867165A CN117662177A CN 117662177 A CN117662177 A CN 117662177A CN 202311867165 A CN202311867165 A CN 202311867165A CN 117662177 A CN117662177 A CN 117662177A
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- slurry
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000010276 construction Methods 0.000 title claims abstract description 28
- 238000005553 drilling Methods 0.000 claims abstract description 37
- 238000012546 transfer Methods 0.000 claims abstract description 15
- 239000002689 soil Substances 0.000 claims abstract description 14
- 239000002002 slurry Substances 0.000 claims description 61
- 230000000903 blocking effect Effects 0.000 claims description 17
- 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
- 238000005520 cutting process Methods 0.000 claims description 14
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 5
- 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
- 230000002633 protecting effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000005265 energy consumption 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
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 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
- 238000007569 slipcasting Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- 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
- E21D9/10—Making by using boring or cutting machines
-
- 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
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
-
- 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
- E21B10/00—Drill bits
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Earth Drilling (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention belongs to the technical field of underground passage construction, and particularly relates to a pipe shed construction method based on a dragging process, which comprises the following steps: s1, forming a small cavity; s2, forming a large cavity; s3, after the grouting pipe is pulled back to a preset position, the transfer case is disassembled, one end of the grouting pipe is plugged, and grouting is carried out on the other end of the grouting pipe, so that pipe shed construction is achieved. The invention can promote the forming and wall protecting effects of the annular space; the invention reduces the probability of encountering hard soil blocks in the drilling process, thereby forming an annular space more easily and improving the construction efficiency of the pipe shed; the invention avoids complex operation caused by the need of replacing the cutter and realizes the formation of large holes; the invention is convenient to maintain and is better suitable for drilling pipelines with different pipe diameters.
Description
Technical Field
The invention belongs to the technical field of underground passage construction, and particularly relates to a pipe shed construction method based on a dragging process.
Background
Underground passageway construction refers to engineering processes that build or construct transit or transit facilities in an underground structure. These underground passages may include underground roads, underground transit tunnels, underground pedestrian passages, underground bridges, and the like. The jacking method is a common construction mode. In this method, box culvert members are typically prefabricated on the ground and then pushed into place by bulldozing, digging or other means. In the construction process of the underground passage, the stability of the underground soil is considered, and if necessary, a supporting structure, such as a pipe shed structure, is needed to prevent the collapse of the soil under the ground surface and ensure the construction safety.
The invention relates to a Chinese patent with application number of CN202011089413.3, which discloses a guiding drilling type pipe shed for a hidden digging channel, solves the problems that the bonding firmness between a steel pipe of the existing pipe shed and a soil layer is poor, and the blocking of the steel pipe of the pipe shed is large when the steel pipe of the pipe shed is inserted, and the energy consumption of equipment is increased; when the pipe shed steel pipe is led in, the conical head, the first inclined plane and the second inclined plane can break the soil layer, so that the resistance during insertion is effectively reduced, and the energy consumption of equipment is reduced.
In the process of pipe shed construction, the rig is when boring, because the difference of geology runs into the probability of stereoplasm soil block easily, like cobblestone, hard stone etc to cause boring difficulty, the cavity shaping effect of boring simultaneously is not good, and easy collapse, when the drilling work of meetting different pipe diameters, often can lead to inefficiency because of changing the part.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a pipe shed construction method based on a dragging process, which can improve the forming and wall protecting effects of an annular space; the invention reduces the probability of encountering hard soil blocks in the drilling process, thereby forming an annular space more easily and improving the construction efficiency of the pipe shed; the invention avoids complex operation caused by the need of replacing the cutter and realizes the formation of large holes; the invention is convenient to maintain and is better suitable for drilling pipelines with different pipe diameters.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a pipe shed construction method based on a dragging process comprises the following steps:
s1, fixing a drilling machine on a foundation through a ground anchor seat and a rear support, adjusting a rotating rod, drilling a drill rod into the center of a designed pipe position, 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;
s2, after drilling a drill rod from a designed pipe position, connecting one end of a drill bit with a grouting pipe through a transfer case, then adjusting the drill bit to enlarge the diameter expansion range of the drill bit, pulling back the grouting pipe 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;
s3, after the grouting pipe is pulled back to a preset position, the transfer case is disassembled, one end of the grouting pipe is plugged, and grouting is carried out on the other end of the grouting pipe, so that pipe shed construction is achieved.
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 drill bit comprises a slurry inlet pipe, one end of the slurry inlet pipe is connected with a drilling machine, a slurry injecting head is communicated with the other end of the slurry inlet pipe, the slurry inlet pipe comprises a slurry inlet pipe wall, a plurality of rotating holes are uniformly formed in the slurry inlet pipe wall, an adjusting cutter is mounted on the rotating holes and comprises an intermediate shaft, the intermediate shaft is rotationally connected with the rotating holes, an arc-shaped cutter plate is fixedly mounted on the intermediate shaft and is positioned on the outer side of the slurry inlet pipe and on one side close to the slurry injecting head, the arc-shaped cutter plate comprises an arc-shaped plate wall, and a first cutter head is uniformly and fixedly arranged on the outer side of the arc-shaped plate wall.
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) When the drill bit is used for drilling, drill cuttings are more easily discharged out of the hole by using the slurry and the drill bit, so that an annular space is formed, the wall protection effect is achieved by expanding the soil components, and then the viscosity of the slurry is enhanced by combining with caustic soda, so that the forming and wall protection effects of the annular space are further improved.
(2) 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.
(3) According to the invention, through adjusting the structural design of the cutter and the grouting pipe, when the drill bit drills forward for the first time, the arc-shaped cutter plate 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 plate seals the through hole, the blocking plate 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 cutter plate 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 plates 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) According to the invention, through the structural design of the fixing bolt and the arc-shaped cutting board, the angle of the arc-shaped cutting board can be adjusted and replaced, so that the drilling machine is convenient to maintain and better suitable for drilling pipelines with different pipe diameters.
(5) 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 view of the overall structure of a drill bit of the present invention;
FIG. 2 is a schematic view of a dispersion structure of a drill bit according to the present invention;
FIG. 3 is a schematic view of a feed pipe of the drill bit of the present invention;
FIG. 4 is a schematic view of the structure of the adjusting tool part of the drill bit of the present invention;
FIG. 5 is a schematic view of the adjusting tool of the drill bit of the present invention;
FIG. 6 is a schematic cross-sectional view of a drill bit according to the present invention;
fig. 7 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; the lever, 370 is rotated.
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 7, a pipe shed construction method based on a dragging process comprises the following steps:
s1, fixing a drilling machine on a foundation through a ground anchor seat and a rear support, adjusting a rotating rod, drilling a drill rod into the center of a designed pipe position, 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;
s2, after drilling a drill rod from a designed pipe position, connecting one end of a drill bit with a grouting pipe through a transfer case, then adjusting the drill bit to enlarge the diameter expansion range of the drill bit, pulling back the grouting pipe 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;
s3, after the grouting pipe is pulled back to a preset position, the transfer case is disassembled, one end of the grouting pipe is plugged, and grouting is carried out on the other end of the grouting pipe, so that pipe shed construction is achieved.
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 drill bit is used for drilling, drill cuttings are more easily discharged out of the hole by using the slurry and the drill bit, so that an annular space is formed, the wall protection effect is achieved by expanding the soil components, and then the viscosity of the slurry is enhanced by combining with caustic soda, so that 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.
The drill bit for the pipe shed construction method comprises a slurry inlet pipe 100, one end of the slurry inlet pipe 100 is connected with a drilling machine, a slurry injecting head 120 is communicated with the other end of the slurry inlet pipe 100, 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 each rotating hole, the adjusting cutter 200 comprises an intermediate shaft 220, the intermediate shaft 220 is rotationally connected with the rotating holes 115, an arc-shaped cutter plate 240 is fixedly mounted on the intermediate shaft 220, the arc-shaped cutter plate 240 is located on the outer side of the slurry inlet pipe 100 and on the side close to the slurry injecting head 120, the arc-shaped cutter plate 240 comprises an arc-shaped plate wall 241, and a first cutter head 244 is uniformly and fixedly arranged on the outer side of the arc-shaped plate wall 241. 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.
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 working principle of the invention is as follows:
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 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 (9)
1. The pipe shed construction method based on the dragging process is characterized by comprising the following steps of:
s1, fixing a drilling machine on a foundation through a ground anchor seat and a rear support, adjusting a rotating rod, drilling a drill rod into the center of a designed pipe position, 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;
s2, after the drill rod drills out from a designed pipe position, connecting one end of the drill bit with a pipeline through a transfer case, then 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;
s3, after the pipeline is pulled back to a preset position, the transfer case is dismounted, one end of the pipeline is blocked, and grouting is carried out on the other end of the pipeline, so that pipe shed construction is realized.
2. The pipe shed construction method based on the dragging process 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. A drill bit for a pipe shed construction method as in claim 1, characterized by comprising 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 rotationally connected with the rotating holes (115), an arc-shaped cutter plate (240) is fixedly mounted on the intermediate shaft (220), the arc-shaped cutter plate (240) is located on the outer side of the slurry inlet pipe (100) and is located on one side close to the grouting head (120), the arc-shaped cutter plate (240) comprises an arc-shaped plate wall (241), and a first cutter head (244) is uniformly and fixedly arranged on the outer side of the arc-shaped plate wall (241).
4. A drill bit according to claim 3, characterized in that the grouting head (120) has 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).
5. A drill bit according to claim 3, wherein a plurality of grooves (111) are uniformly formed in the grouting pipe wall (110), the grooves (111) are located at 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 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 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).
6. The drill bit according to claim 5, wherein 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 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.
7. A drill bit according to claim 3, characterized in that 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 of the arc-shaped cutter plate (240) close to the intermediate shaft (220) 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).
8. The drill bit of claim 6, wherein a blocking plate (210) is fixedly connected to the intermediate shaft (220), the blocking plate (210) has a fan-shaped structure, the blocking plate (210) is located inside the grouting pipe (100), and rotation of the intermediate shaft (220) can enable the blocking plates (210) to jointly form a sealing structure to block slurry, and at the moment, the open end of the grouting pipe (300) is communicated with the through hole (113).
9. The drill bit of claim 6, wherein the first bit (244) and the second bit (330) are each disposed at an incline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN117662177B (en) | 2024-06-18 |
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