CN112942468B - Top-entering construction method for open trench digging pipeline - Google Patents
Top-entering construction method for open trench digging pipeline Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
- E02F5/12—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with equipment for back-filling trenches or ditches
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Abstract
The application relates to a top construction method for a pipeline with an open trench, which comprises the following steps: s1, excavating a groove and pouring a bottom plate of the inspection well: excavating a groove, wherein the groove is excavated by the distance of one well section; pouring a bottom plate of the inspection well at the design position of the inspection well; s2, mounting a backrest: a backrest is arranged at the end of the groove and is arranged on the bottom plate of the inspection well; s3, installation of the elevation control device: mounting an elevation control piece at the bottom of the groove, wherein the elevation control piece is buried in the bottom surface of the groove; s4, mounting a brim: a first pipe is placed downwards, and a brim is installed at the port of the first pipe; s5, jacking the pipeline: after the installation of the brim, a first pipe is jacked, and after the jacking of the first pipe is finished, a second pipe is put down and is jacked continuously; s6, inspection well construction and groove backfilling: and after the pipeline is jacked, removing the backrest, building a manhole chamber on a manhole bottom plate, and backfilling the groove. The method has the effect of laying the pipeline in the trench under the condition that the space on two sides of the trench is insufficient.
Description
Technical Field
The application relates to the field of pipeline construction, in particular to a pipeline jacking construction method for an open trench.
Background
Municipal roads are the blood vessels of cities and are a very important part of cities. Because most of municipal roads at present are roads which are widened in the later period or repaired during maintenance, pipelines need to be arranged below the roads during maintenance.
At present, in a certain project, the batch construction range of a delivery department is 10m wide, the excavation width of a pipeline groove is 6.9m, the two sides of the groove are not provided with spaces for placing cranes, the pipeline can not be laid by using the traditional pipeline construction method, and the construction is difficult.
In view of the above-mentioned related art, the inventor believes that there is a defect that the space on both sides of the trench is insufficient and the pipeline cannot be laid by using the conventional pipeline construction method.
Disclosure of Invention
In order to solve the technical problems that the spaces on the two sides of the groove are insufficient and the pipeline laying cannot be carried out by using the traditional pipeline construction method, the application provides a pipeline jacking construction method for the open trench.
The application provides a construction method for jacking a pipeline with an open trench, which adopts the following technical scheme:
a top-entering construction method for a pipeline with an open trench comprises the following steps:
s1, excavating a groove and pouring a bottom plate of the inspection well: excavating a groove according to the designed excavation position, excavating a well section by the groove, and setting the end of the groove as a slope; after the groove is excavated, pouring an inspection well bottom plate at the designed position of the inspection well, wherein the top surface of one end, close to the slope, of the inspection well bottom plate is provided with a plurality of mounting holes, and the plurality of mounting holes are formed along the direction vertical to the length direction of the groove;
s2, mounting a backrest: a backrest is installed at the position where the end of the groove is provided with a slope, and the backrest is installed on the bottom plate of the inspection well;
s3, installation of the elevation control device: installing an elevation control piece at the bottom of the groove, wherein the elevation control piece is a long strip block, the elevation control piece is embedded at the bottom of the groove, and the elevation of the top surface of the elevation control piece is the elevation of the bottom surface of the pipeline;
s4, mounting a brim: a first pipe is placed downwards by using a hoisting device, a brim is installed at the bottom of the front end opening of the first pipe, the brim is in a semicircular shape, and two ends of the brim are bent upwards;
s5, jacking the pipeline: after the installation of the brim, starting to jack in a first pipe, after the jacking of the first pipe is finished, putting down a second pipe, and continuing to jack in until the jacking of the first well section is finished;
s6, inspection well construction and groove backfilling: and after the pipeline is jacked, removing the backrest, building an inspection well chamber on the bottom plate of the inspection well, and backfilling the groove after the building of the inspection well chamber is finished.
By adopting the technical scheme, the backrest is arranged at the end of the groove, the equipment is arranged above the end of the groove, and the pipeline is jacked in the groove, so that the technical problems that the space at two sides of the groove is insufficient and the pipeline can not be laid by using the traditional pipeline construction method are solved; the friction force of a jacking pipeline in the open trench is small, and the jacking speed is high, so that the assembled backrest is adopted, the first well section is constructed, the backrest is disassembled and installed in the trench of the second well section, the time for manufacturing the traditional concrete backrest is saved, and the construction efficiency is improved; the brim is arranged at the pipe orifice, so that the phenomenon that the end of the pipeline is pricked can be prevented, and the pipe orifice is pricked into the soil, so that the construction efficiency and the construction quality are influenced; the elevation of pipeline can be guaranteed to installation elevation control to the intensity of ditch groove bottom soil has been strengthened, prevents that the pipeline from sinking.
Optionally, in step S2, the backrest includes a plurality of uprights, the uprights are inserted into the mounting holes, a plurality of cross beams are mounted on one side of the uprights away from the slope, the plurality of cross beams are evenly arranged at intervals, the cross beams are perpendicular to the uprights, a steel plate is welded on one side of the cross beam away from the uprights, and a jack is mounted at the bottom of one side of the steel plate away from the cross beam.
Through adopting above-mentioned technical scheme, back simple structure, the installation of being convenient for to install the back on the inspection shaft bottom plate, mutually support with the inspection shaft bottom plate, make the back more firm.
Optionally, a back plate is arranged on the slope, a plurality of supports are fixedly arranged on the back plate, the positions of the supports correspond to the positions of the plurality of stand columns one by one, support rods are respectively arranged on the supports, and the support rods are hinged with the support balls; the stand is close to the one side top welding butt piece on slope, and the butt piece bottom surface is seted up flutedly, and the one end butt that the support was kept away from to the bracing piece is in the recess.
Through adopting above-mentioned technical scheme, make the bracing piece can push up the stand tightly, make the pressure that the back received can conduct to the slope on to it is more firm to make the back.
Optionally, in step S1, an anchor block is disposed on the inspection shaft bottom plate, the anchor block and the inspection shaft bottom plate are integrally cast, the anchor block is disposed along the width direction of the trench, and the anchor block is embedded in the bottom of the trench.
Through adopting above-mentioned technical scheme, advancing the in-process at the pipeline, the back receives the effort towards the slope, conducts this effort to the inspection shaft bottom plate through the stand on, makes the inspection shaft bottom plate receive with the effort of back syntropy, and the anchor block buries in soil, can offset the effort that the inspection shaft received, consequently makes the inspection shaft bottom plate more firm.
Optionally, one side of the anchoring block, which is close to the slope, is set to be an inclined plane, and the inclined plane is inclined upwards from one end close to the slope to one end far away from the slope.
Through adopting above-mentioned technical scheme, the inclined plane has strengthened the anchor effect of anchor block, makes the inspection shaft bottom plate more firm.
Optionally, in step S3, guide members are respectively installed at two ends of the elevation control element in the length direction, each guide member includes an installation rod and a rotating wheel, the installation rod is anchored to the top surface of the elevation control element, the installation rod is inclined outward from the bottom end to the top end, the rotating wheel is sleeved on the installation rod, and the rotating wheel is rotatably connected with the installation rod.
Through adopting above-mentioned technical scheme, when the top advances the pipeline, the pipeline when the horizontal direction takes place to deviate, the guide can play the effect that the direction was rectified, prevents that pipeline offset distance is too big to the runner can reduce frictional force, does not influence the normal top of pipeline and advances.
Optionally, a distance of 2-3cm is left between the rotating wheel and the outer peripheral wall of the pipeline.
Through adopting above-mentioned technical scheme, when pipeline horizontal direction does not take place to deviate, the pipeline can not contact the runner, prevents that the pipeline from contacting with the guide for a long time, destroying the guide.
Optionally, in step S4, a supporting rod is installed on an inner wall of one end of the brim far from the first tube, one end of the supporting rod is fixed on the brim, and the other end of the supporting rod is fixed with an L-shaped plate, and the L-shaped plate is abutted to the inside of the tube opening of the first tube.
Through adopting above-mentioned technical scheme, when the pipeline takes place to prick the head phenomenon, the brim of a hat contradicts the ditch groove bottom surface, and upward effort is exerted for the brim of a hat to the ditch groove bottom surface, and the effort can be through branch conduction to mouth of pipe upper portion to the mouth of pipe receives an ascending effort in slant, and the effort that the mouth of pipe received can offset the gravity of pipeline self, prevents that the mouth of pipe from pricking the head downwards.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the technical problems that the space on two sides of the groove is insufficient and the pipeline cannot be laid by using a traditional pipeline construction method are solved by installing the backrest on the end of the groove, arranging equipment above the end of the groove and jacking the pipeline in the groove; the friction force of a jacking pipeline in the open trench is small, and the jacking speed is high, so that the assembled backrest is adopted, the first well section is constructed, the backrest is disassembled and installed in the trench of the second well section, the time for manufacturing the traditional concrete backrest is saved, and the construction efficiency is improved; the brim is arranged at the pipe orifice, so that the phenomenon that the end of the pipeline is pricked can be prevented, and the pipe orifice is pricked into the soil, so that the construction efficiency and the construction quality are influenced; the elevation of the pipeline can be ensured by installing the elevation control piece, the strength of soil at the bottom of the groove is enhanced, and the pipeline is prevented from sinking;
2. the backrest is simple in structure and convenient to mount, and the backrest is mounted on the bottom plate of the inspection well and matched with the bottom plate of the inspection well, so that the backrest is more stable;
3. when the pipeline is jacked in, and the pipeline deviates in the horizontal direction, the guide piece can play a role in guiding and rectifying deviation, so that the pipeline deviation distance is prevented from being too large, and the rotating wheel can reduce the friction force without influencing the normal jacking of the pipeline;
4. when the pipeline takes place to prick the head phenomenon, the brim of a hat conflicts the ditch groove bottom surface, and upward effort is applyed for the brim of a hat to the ditch groove bottom surface, and the effort can conduct to mouth of pipe upper portion through branch to the mouth of pipe receives an ascending effort in the slant, and the effort that the mouth of pipe received can offset the gravity of pipeline self, prevents that the mouth of pipe from pricking the head downwards.
Drawings
Fig. 1 is a schematic perspective view of the present application.
Figure 2 is a schematic perspective view of an inspection well bottom plate.
Fig. 3 is a perspective view of the backrest.
FIG. 4 is a perspective view of the elevation control member.
Fig. 5 is a schematic perspective view of the visor.
Figure 6 is a schematic perspective view of a strut.
Description of reference numerals: 1. a trench; 11. a slope; 2. a pipeline; 21. a first tube; 211. a pipe orifice; 3. a manhole base plate; 31. mounting holes; 32. an anchoring block; 33. thickening blocks; 4. a backrest; 41. a column; 42. a cross beam; 43. a steel plate; 44. corner brace; 45. a back plate; 451. anchoring nails; 452. a support; 46. a support bar; 47. a butting block; 471. a groove; 48. a jack; 5. an elevation control; 6. a guide member; 61. mounting a rod; 62. a rotating wheel; 7. a brim; 71. externally connecting reinforcing steel bars; 72. internally connecting reinforcing steel bars; 73. an annular reinforcing bar; 74. a strut; 75. an L-shaped plate; 751. a vertical plate; 752. a horizontal plate; 8. hoisting equipment.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
The embodiment of the application discloses a construction method for jacking a pipeline with an open trench. A top-entering construction method for a pipeline with an open trench comprises the following steps:
s1, excavating a groove and pouring a bottom plate of the inspection well: referring to fig. 1 and 2, in a construction range, excavating a groove 1 according to a design position of the groove 1, excavating the groove 1 by using an excavator in a backward direction, wherein the excavating distance is the distance of one well section, and excavating the end of the groove 1 close to the next unearthed well section to form a slope 11; after the excavation of one well section groove 1 is finished, two inspection well bottom plates 3 are poured, two anchoring blocks 32 are integrally poured and formed on the bottom surfaces of the inspection well bottom plates 3, the anchoring blocks 32 are arranged along the width direction of the groove 1 in a full-length mode, one of the anchoring blocks 32 is arranged at one end, far away from the slope 11, of the inspection well bottom plate 3, and the other anchoring block 32 is arranged in the middle of the inspection well bottom plate 3; and three mounting holes 31 are reserved at the position of the bottom plate 3 of the inspection well, which is close to the slope 11, and the three mounting holes 31 are uniformly arranged at intervals along the direction vertical to the jacking direction of the pipeline 2.
S2, mounting a backrest: referring to fig. 1 and 3, a backrest 4 is installed at one end of a groove 1 provided with a slope 11, first, upright posts 41 are respectively penetrated through installation holes 31, the bottom ends of the upright posts 41 are anchored into the bottom of the groove 1, then, three cross beams 42 are welded on one surfaces of the three upright posts 41 far away from the slope 11, the cross beams 42 are perpendicular to the upright posts 41, the three cross beams 42 are evenly arranged at intervals, and the cross beams 42 connect the three upright posts 41 into a whole so that the upright posts 41 can be more stable; welding a steel plate 43 on one surface of the cross beam 42 far away from the upright post 41, then placing a jack 48 on the inspection well bottom plate 3, and fixedly connecting the jack 48 with one surface of the steel plate 43 far away from the cross beam 42.
The corner support 44 is welded to the bottom of one side, close to the slope 11, of the upright column 41, the corner support 44 is perpendicular to the upright column 41, the corner support 44 is made of angle steel, one side, far away from the other plate, of one plate of the corner support 44 is welded to the upright column 41, the other plate abuts against the bottom plate 3 of the inspection well, and the corner support 44 can support the bottom of the upright column 41, so that the backrest 4 is higher in structural strength and can stably bear pressure generated when the pipeline 2 is pushed.
Referring to fig. 2 and 3, a thickened block 33 is further integrally cast on the bottom surface of the inspection well bottom plate 3, the thickened block 33 and the anchoring block 32 are arranged in the same direction, the thickened block 33 is arranged below the corner brace 44, the thickened block 33 can enhance the strength of the inspection well bottom plate 3, the corner brace 44 is prevented from crushing the inspection well bottom plate 3, and in addition, the thickened block 33 can also play the same role as the anchoring block 32.
A back plate 45 is placed on the slope 11, the back plate 45 is attached to the slope 11, three supports 452 are mounted on the back plate 45, the three supports 452 correspond to the three upright posts 41 one by one, support rods 46 are respectively mounted on the supports 452, and the support rods 46 are in ball hinge joint with the supports 452; welding the butt piece 47 at the top that stand 41 is close to slope 11 one side, butt piece 47 perpendicular to stand 41 sets up, the butt piece 47 links together three stands 41, seted up the recess 471 at butt piece 47 bottom surface, the one end of keeping away from support 452 with bracing piece 46 is supported in the recess 471, then make backplate 45 move down along slope 11, until moving backplate 45 and can not moving, make bracing piece 46 can push up stand 41, make the pressure that back 4 received can conduct to slope 11 on, thereby make back 4 more firm.
Set firmly anchor nail 451 on the one side that backplate 45 is close to slope 11 setting, anchor nail 451 is the wedge that the one end that is close to backplate 45 is inclined to the one end slant that is kept away from backplate 45 and sets up, and anchor nail 451 can be anchored in slope 11, makes backplate 45 more firm.
S3, installation of the elevation control device: referring to fig. 1 and 4, a plurality of elevation control pieces 5 are laid at the bottom of a groove 1, the elevation control pieces 5 are strip-shaped blocks, the elevation control pieces 5 can be made of square wood or precast concrete blocks, the elevation control pieces 5 are embedded into the bottom surface of the groove 1, the length direction of each elevation control piece 5 is perpendicular to the length direction of the groove 1, one elevation control piece 5 is embedded at intervals of 1m along the length direction of the groove 1, measurement personnel cooperate to measure, the elevation of the top surface of each elevation control piece 5 is the elevation of the bottom surface of a pipeline 2, the pipeline 2 moves forwards on the elevation control pieces 5 in the jacking process of the pipeline 2, the elevation of the pipeline 2 can be controlled by the elevation control pieces 5, and the elevation control pieces 5 can enhance the strength of the soil body on the bottom surface of the groove 1 and prevent the pipeline 2 from sinking.
Install guide 6 on the top surface that is close to length direction both ends at elevation control 5 respectively, guide 6 is including installation pole 61 and runner 62, at first with installation pole 61 anchor to elevation control 5 on, and installation pole 61 sets up towards the slope of elevation control 5 outside by the bottom to the top, then establish runner 62 on installation pole 61, make runner 62 and installation pole 61 rotate and be connected, and control the distance between two guide 6, make two runners 62 have 2-3 cm's distance respectively to pipeline 2 periphery wall, guide 6 can push up pipeline 2 and play the guide effect, when pipeline 2 pushes up to advance and takes place the skew, pipeline 2 contacts guide 6, can prevent that pipeline 2 from taking place bigger skew, and runner 62 can reduce the friction, do not influence the normal top of pipeline 2 and advance.
S4, mounting a brim: referring to fig. 1 and 5, a hoisting device 8 is placed outside one end of a groove 1 provided with a slope 11, the hoisting device 8 and the groove 1 are in the same straight line in the length direction, a first pipe 21 is placed in the groove 1 by using the hoisting device 8, the first pipe 21 is positioned in front of a jack 48, a visor 7 is installed at one end of the first pipe 21 away from a backrest 4, the visor 7 is semicircular, two ends of the visor 7 are bent upwards, a plurality of external connecting steel bars 71 are fixedly arranged on the outer wall of one end of the visor 7 connected with the first pipe 21, the plurality of external connecting steel bars 71 are uniformly arranged at intervals along the outer peripheral wall of the visor 7, a plurality of internal connecting steel bars 72 are arranged on the inner wall of the visor 7, the plurality of internal connecting steel bars 72 are positioned in one-to-one correspondence with the positions of the plurality of external connecting steel bars 71, the external connecting steel bars 71 and the internal connecting steel bars 72 are clamped into a pipe orifice 211 of the first pipe 21 away from the backrest 4, binding annular steel bars 73 or steel wire ropes on the outer peripheral wall of the pipe orifice 211, and fixing the outer connecting steel bars 71 on the outer wall of the pipe orifice 211 so as to fix the brim 7; in the jacking process of the pipeline 2, if the pipeline 2 is subjected to head pricking, the brim 7 can prevent the pipe orifice 211 from pricking into the soil.
Referring to fig. 5 and 6, a supporting rod 74 is disposed at one end of the brim 7 far from the spout 211, one end of the supporting rod 74 is fixedly connected to the inner wall of the brim 7, the other end of the supporting rod 74 is fixedly connected with an L-shaped plate 75, the L-shaped plate 75 comprises a vertical plate 751 and a horizontal plate 752, one end of the vertical plate 751 is fixedly connected with one end of the horizontal plate 752, the horizontal plate 752 is an arc-shaped plate adapted to the inner wall of the circular spout 211, one end of the supporting rod 74 is fixedly connected to one surface of the vertical plate 751 far from the horizontal plate 752, the L-shaped plate 75 is abutted against the upper portion of the spout 211, the horizontal plate 752 is abutted against the inner wall of the spout 211, the vertical plate 751 is abutted against the end surface of the spout 211, when the pipe 2 is subjected to the tying phenomenon, the brim 7 is abutted against the bottom surface of the groove 1, an upward acting force is applied to the brim 7 by the bottom surface of the groove 1, the acting force can be transmitted to the upper portion of the spout 211 through the supporting rod 74, so that the spout 211 is subjected to an upward acting force, the acting force that the mouth of pipe 211 received can offset the gravity of pipeline 2 self, and further pipeline 2 that prevents takes place to prick the head phenomenon.
S5, jacking the pipeline: after the first pipe 21 is jacked, a second pipe is lowered into the groove 1 by using the hoisting equipment 8, and then the second pipe is jacked until all the pipelines 2 in the first section of the well are jacked.
S6, inspection well construction and groove backfilling: after the top level of all the pipelines 2 in the first section of the well can be completed, firstly removing the backrest 4, filling the mounting hole 31 with concrete, and then building a well chamber (not shown in the figure) of the inspection well on the bottom plate 3 of the inspection well by using a well wall module; and after the two inspection well chambers are built, backfilling the groove 1 to a designed elevation, and tamping the backfilled soil.
And after the construction of the first well section is finished, repeating S1-S6 to construct the next well section until the pipeline 2 in the design is completely laid, and finishing the construction.
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 (8)
1. A top-entering construction method for a pipeline with an open trench is characterized by comprising the following steps: the method comprises the following steps:
s1, excavating a groove and pouring a bottom plate of the inspection well: excavating a groove (1) according to a designed excavation position, excavating a well section distance by the groove (1), and setting the end of the groove (1) as a slope (11); after the trench (1) is excavated, pouring an inspection well bottom plate (3) at the designed position of the inspection well, wherein a plurality of mounting holes (31) are formed in the top surface of one end, close to the slope (11), of the inspection well bottom plate (3), and the plurality of mounting holes (31) are formed in the direction vertical to the length direction of the trench (1);
s2, mounting a backrest: a backrest (4) is arranged at the position of the end of the groove (1) provided with a slope (11), and the backrest (4) is arranged on the inspection well bottom plate (3);
s3, installation of the elevation control device: the method comprises the following steps that an elevation control piece (5) is installed at the bottom of a groove (1), the elevation control piece (5) is a long block, the elevation control piece (5) is embedded in the bottom of the groove (1), and the elevation of the top surface of the elevation control piece (5) is the elevation of the bottom surface of a pipeline (2);
s4, mounting a brim: a first pipe (21) is placed downwards by using a hoisting device (8), a cap peak (7) is installed at the bottom of the front end opening of the first pipe (21), the cap peak (7) is in a semicircular shape, and two ends of the cap peak (7) are bent upwards;
s5, jacking the pipeline: after the installation of the brim (7), starting to jack in a first pipe (21), after the jacking of the first pipe (21) is finished, lowering a second pipe, and continuing to jack in until the jacking of the first well section is finished;
s6, inspection well construction and groove backfilling: and after the pipeline (2) is jacked, removing the backrest (4), building a manhole chamber on the manhole bottom plate (3), and backfilling the groove (1) after the manhole chamber is built.
2. The open trench digging pipeline jacking construction method according to claim 1, characterized in that: in the step S2, the backrest (4) comprises a plurality of upright posts (41), the upright posts (41) are arranged in the mounting holes (31) in a penetrating mode, then a plurality of cross beams (42) are arranged on one face, far away from the slope (11), of the upright posts (41), the cross beams (42) are evenly arranged at intervals, the cross beams (42) are perpendicular to the upright posts (41), steel plates (43) are welded on one face, far away from the upright posts (41), of the cross beams (42), and jacks (48) are arranged at the bottoms of one face, far away from the cross beams (42), of the steel plates (43).
3. The open trench digging pipeline jacking construction method according to claim 2, characterized in that: a back plate (45) is arranged on the slope (11), a plurality of supports (452) are fixedly arranged on the back plate (45), the positions of the supports (452) correspond to the positions of the upright posts (41) one by one, supporting rods (46) are respectively arranged on the supports (452), and the supporting rods (46) are in ball joint with the supports (452); the top end of one side of the upright column (41) close to the slope (11) is welded with the abutting block (47), the bottom surface of the abutting block (47) is provided with a groove (471), and one end of the support rod (46) far away from the support seat (452) abuts against the groove (471).
4. The open trench digging pipeline jacking construction method according to claim 1, characterized in that: in the step S1, an anchoring block (32) is arranged on the inspection well bottom plate (3), the anchoring block (32) and the inspection well bottom plate (3) are integrally cast, the anchoring block (32) is arranged along the width direction of the groove (1) in a full-length mode, and the anchoring block (32) is embedded into the bottom of the groove (1).
5. The open trench digging pipeline jacking construction method according to claim 4, characterized in that: one side of the anchoring block (32) close to the slope (11) is set to be an inclined plane, and the inclined plane inclines upwards from one end close to the slope (11) to one end far away from the slope (11).
6. The open trench digging pipeline jacking construction method according to claim 1, characterized in that: in the step S3, guide pieces (6) are respectively installed at two ends of the height control piece (5) in the length direction, each guide piece (6) comprises an installation rod (61) and a rotating wheel (62), the installation rod (61) is anchored to the top surface of the height control piece (5), the installation rod (61) is arranged in a mode of inclining towards the height control piece (5) from the bottom end to the top end, the rotating wheels (62) are sleeved on the installation rod (61), and the rotating wheels (62) are rotatably connected with the installation rod (61).
7. The open trench digging pipeline jacking construction method according to claim 6, characterized in that: a distance of 2-3cm is reserved between the rotating wheel (62) and the outer peripheral wall of the pipeline (2).
8. The open trench digging pipeline jacking construction method according to claim 1, characterized in that: in the step S4, a support rod (74) is installed on the inner wall of one end, away from the first pipe (21), of the cap peak (7), one end of the support rod (74) is fixed on the cap peak (7), the other end of the support rod is fixed with an L-shaped plate (75), and the L-shaped plate (75) is abutted to the pipe orifice (211) of the first pipe (21).
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| CN212361006U (en) * | 2020-04-30 | 2021-01-15 | 天津市管道工程集团有限公司 | Automatic leveling pipeline bracket for water overhead pipeline |
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| CN212361006U (en) * | 2020-04-30 | 2021-01-15 | 天津市管道工程集团有限公司 | Automatic leveling pipeline bracket for water overhead pipeline |
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