CN210317345U - Extrusion consolidation device for adopting lower roller-skating steel plate and platform for collapse stratum of jacking pipe - Google Patents
Extrusion consolidation device for adopting lower roller-skating steel plate and platform for collapse stratum of jacking pipe Download PDFInfo
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- CN210317345U CN210317345U CN201822222268.6U CN201822222268U CN210317345U CN 210317345 U CN210317345 U CN 210317345U CN 201822222268 U CN201822222268 U CN 201822222268U CN 210317345 U CN210317345 U CN 210317345U
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Abstract
The utility model relates to a push pipe meets the stratum of collapsing and adopts lower smooth steel sheet to add a platform extrusion consolidation device, including push pipe, lower round slide and tunnelling steel sheet, the lower round slide includes bottom plate, spacing curb plate and circular roll rod steel skidding, the bottom plate is fixed on the bottom central line of push pipe, spacing curb plate symmetry is located push pipe bottom central line both sides on the bottom plate, circular roll rod steel skidding perpendicular to spacing curb plate and interval are located two the steel inslot that spacing curb plate formed, it is located to tunnel the steel sheet push pipe top front end. The utility model discloses a lower round of slide with the tunnelling steel sheet has reduced push pipe upper portion and bottom are at the resistance of jacking in-process, have also guaranteed that constructor is in push pipe front end safety construction, pass through simultaneously spacing curb plate is right the smooth spacing of circular roll rod iron wheel has guaranteed the skew can not appear at the jacking in-process in the push pipe.
Description
Technical Field
The utility model belongs to civil engineering finite space inner tube corridor construction auxiliary assembly's method especially relates to a push pipe meets the stratum of collapsing and adopts lower skidding steel sheet and adds a extrusion consolidation device.
Background
Along with the rapid development of urbanization, the increment of the comprehensive pipe gallery engineering is large, the geometric expression forms of the design section of the current pipe gallery engineering are circular (1 a in figure 1), semicircular (1 b in figure 1), rectangular (1 c in figure 1) and arched (1 d in figure 1), the traditional grouting supporting method or mechanical earth pressure balance jacking pipe and mechanical mud-water balance jacking pipe are used in the stratum collapsed by sand, soil and mud in any case, and the thrust is supplemented among relays for multiple times, the upper pavement collapse is easy to occur in the results of the modes, many uncertain factors and hazards exist, for example, the safety of constructors is threatened, the engineering efficiency is reduced, and the construction cost is very large.
In view of this, how to solve the resistance during the advancing of the jacking pipe and prevent the collapse stratum from harming the construction safety is a technical problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
The utility model provides a push pipe meets the stratum of collapsing and adopts lower skidding steel sheet to add a platform extrusion consolidation device, has reduced the push pipe and has synthesized construction cost, has improved work efficiency, has guaranteed construction safety moreover.
In order to solve the technical problem, the utility model provides a technical scheme: the jacking pipe adopts lower skidding steel plate and platform extrusion consolidation device when meeting the stratum of collapsing, including jacking pipe, lower round slide, tunnelling steel sheet, the lower round slide includes bottom plate, spacing curb plate and circular roll rod pulley, the bottom plate is fixed on the bottom central line of jacking pipe, spacing curb plate symmetry is located the jacking pipe bottom central line both sides on the bottom plate, circular roll rod pulley perpendicular to spacing curb plate and interval locate two in the recess that spacing curb plate formed, tunnelling steel sheet is located jacking pipe front end upper portion. The utility model discloses a locate the push pipe bottom the lower round of slide with locate push pipe front end upper portion the tunnelling steel sheet has effectively reduced the push pipe is at the resistance of jacking in-process, and constructor is in simultaneously safe construction under the tunnelling steel sheet, and pass through spacing curb plate is right circular roll rod is smooth spacing, has guaranteed that the skew can not appear at the jacking in-process in the pipe fitting.
Preferably, a raised steel belt is further arranged on the tunneling steel plate, the steel belt is located between the liquid injection hole and the top pipe, and the width of the steel belt is equal to that of the tunneling steel plate. In the structure, a stable lubricating and solidifying surface layer is formed at the contact part of the surrounding rock sand body on the upper part and the jacking pipe through the extrusion action of the steel belt, so that the frictional resistance between the jacking pipe and the surrounding rock sand body is reduced.
Preferably, the steel belt is a step-shaped steel belt, and the height of the front end of the step-shaped steel belt is lower than that of the rear end of the step-shaped steel belt. In the structure, the height of the step-shaped steel belt is set to gradually increase the extrusion force on the surrounding rock sand body which is in contact and fusion with the lubricant and the consolidation chemical material on the upper part of the jacking pipe, so that the stability of the formed lubricating and consolidating surface layer is further ensured.
Preferably, the length of the heading steel plate is 1.0m to 1.5 m. In the structure, the length of the tunneling steel plate is set to be 1.0-1.5 m, so that on one hand, the set length range is enough to ensure the safe operation of constructors, and on the other hand, the production cost of equipment can be reduced.
Preferably, a plurality of liquid injection holes are uniformly formed in the front end of the tunneling steel plate, and the distance between each liquid injection hole and the front end edge of the tunneling steel plate is 30-50 cm. In the structure, the front end of the tunneling steel plate is provided with the liquid injection hole, the liquid injection hole is arranged at the front end edge of the tunneling steel plate, the distance between the edge of the front end of the tunneling steel plate is set to be 30-50 cm, and the fact that a lubricating agent and a consolidation chemical material which are injected from the liquid injection hole have sufficient contact time with a surrounding rock sand body is guaranteed, so that a stable lubricating and consolidation surface layer is formed.
Preferably, the top of the top pipe is provided with a top plate covering the top area of the top pipe, and a plurality of rolling pulleys are uniformly distributed on the top plate. In the structure, the top of the jacking pipe is provided with the top plate covering the top area, when a flowing mud stratum is met, the flowing mud layer collapses on the top plate of the jacking pipe, so that the top plate and the flowing mud layer are relatively immobile, and the sliding action generated between the rolling pulley and the top plate greatly reduces the advancing resistance of the jacking pipe.
Preferably, the distance between the rolling pulleys in a plurality of groups is 40 cm. In the structure, the distance between the adjacent rolling pulleys is set to be 40cm, so that the sliding action between the upper part of the jacking pipe and the rolling pulleys is ensured, and the forward resistance of the upper part of the jacking pipe is reduced.
Preferably, the length of the top plate is 1.0m to 1.2 m. In the structure, on one hand, the production cost of equipment is saved, and on the other hand, the advancing resistance of the upper part of the jacking pipe can be effectively reduced.
Preferably, the bottom plate is further provided with a steel plate, and the limiting side plate is bent and formed at one time through the steel plate. In the structure, the limiting side plate is formed by bending the steel plate at one time, so that the stable installation of the rolling round steel bar wheel is strongly guaranteed.
Compared with the prior art, the utility model discloses following technological effect has:
(1) in the utility model, the resistance of the jacking pipe in the jacking process is effectively reduced through the lower wheel sliding plate arranged at the bottom of the jacking pipe and the tunneling steel plate arranged at the front end of the top of the jacking pipe, and meanwhile, constructors can safely construct the jacking pipe under the tunneling steel plate, and the round rolling steel bar slides through the limit of the limit side plate, so that the phenomenon of deviation of the pipe fitting in the jacking process is avoided;
(2) in the utility model, the top plate and the roller skate are arranged in the top area of the jacking pipe, so that the device is suitable for the pipe gallery construction of a mud flowing stratum;
(3) in the utility model, through the extrusion effect of the step-shaped steel belt, the sand collapse at the upper part of the jacking pipe is effectively prevented, and the forward movement resistance at the upper part of the jacking pipe is reduced;
(4) the utility model discloses a tunnelling the steel sheet front end and setting up a plurality of notes liquid holes, guaranteed the country rock sand body at push pipe top and consolidation chemistry liquid medicine can form stable consolidation top layer, further reduce the resistance that moves ahead of push pipe.
Drawings
Figure 1 is a schematic view of a jacking pipe in corridor pipe engineering in the prior art,
figure 2 is a schematic structural view of the present invention,
FIG. 3 is a schematic view of the structure of the middle lower wheel skateboard of the present invention,
figure 4 is a top view of the present invention,
figure 5 is a front view of figure 4,
fig. 6 is a schematic structural diagram of another embodiment of the present invention.
In the figure: 1. the steel plate tunneling machine comprises a top pipe, 2 parts of a lower wheel sliding plate, 21 parts of a bottom plate, 22 parts of a limiting side plate, 23 parts of a round rolling steel bar wheel sliding, 24 parts of a steel plate, 25 parts of a positioning hole, 31 parts of a top plate, 32 parts of a rolling pulley, 33 parts of a liquid injection hole, 34 parts of a step-shaped steel belt and 35 parts of a tunneling steel plate.
Detailed Description
As shown in fig. 2, fig. 3, fig. 4 and fig. 5, the jacking pipe adopts a lower roller-skating steel plate and table extrusion consolidation device in the stratum where the jacking pipe collapses, and the device comprises a jacking pipe 1, a lower roller-skating plate 2 and a tunneling steel plate 35, wherein the lower roller-skating plate 2 comprises a bottom plate 21, limiting side plates 22 and round rolling steel bar roller-skating 23, the bottom plate 21 is fixed on the bottom center line of the jacking pipe 1, the limiting side plates 22 are symmetrically arranged on the bottom plate 21 at two sides of the bottom center line of the jacking pipe 1, the round rolling steel bar roller-skating 23 is perpendicular to the limiting side plates 22 and is arranged in a groove formed by the two limiting side plates 22 at intervals, and the tunneling steel plate 35 is positioned at the upper part of the front.
In the embodiment, the dead weight of the top pipe 1 and surrounding rock sand around the top pipe 1 are transmitted to the round rolling steel bar skidding 23 through the lower wheel sliding plate 2 arranged at the bottom of the top pipe 1, and the force is decomposed to a lower steel plate and a foundation through the round rolling steel bar skidding 23, so that the thrust multiple of the oil cylinder for pushing the top pipe 1 to move forwards is reduced, and meanwhile, the probability that the top pipe 1 is damaged by the action of the oil cylinder is greatly reduced; meanwhile, the tunneling steel plate is arranged at the front end of the top of the jacking pipe, so that the safe construction of constructors at the front end of the jacking pipe is guaranteed.
As shown in fig. 4 and 5, a raised steel belt 34 is further provided on the heading steel plate 35, the steel belt 34 is located between the liquid injection hole 33 and the top pipe 1, and the width of the steel belt 34 is equal to the width of the heading steel plate. In this embodiment, the length of the steel strip 34 is determined according to the looseness of the surrounding rock sand body, and after the lubricant and the consolidation chemical material are injected into the surrounding rock sand body through the injection hole 33, a more stable lubricating consolidation surface layer is formed at the contact part of the upper surrounding rock sand body and the top pipe 1 through the extrusion effect of the steel strip 34, so that the frictional resistance between the top pipe 1 and the surrounding rock sand body is reduced, and the collapse of the upper sand is prevented.
As shown in fig. 5, the steel strip 34 is a stepped steel strip, and the height of the front end of the stepped steel strip 34 is lower than that of the rear end. In this embodiment, the stepped steel strip 34 is set to have a height at the front end lower than that at the rear end, and a horizontal section is present at the rear end of the stepped steel strip 34, so that the extrusion force applied to the surrounding rock sand body, which is in contact and fused with the lubricant and the consolidation chemical material, on the upper portion of the jacking pipe 1 is gradually increased, and then the stability of the formed lubricating and consolidating surface layer is further ensured by the extrusion of the horizontal section at the rear end of the stepped steel strip 34, thereby effectively preventing the collapse of the sand on the upper portion.
As shown in fig. 4 and 5, the length of the heading steel plate 35 is 1.0m to 1.5 m. In this embodiment, the length of the heading steel plate 35 is set to 1.0m to 1.5m, which is sufficient to ensure the safe operation of the constructor at the front end of the pipe jacking 1, and can reduce the production cost of the equipment.
As shown in fig. 4, a plurality of injection holes 33 are uniformly formed at the front end of the heading steel plate 35, and the distance between the injection holes 33 and the edge of the front end of the heading steel plate is 30-50 cm. In the embodiment, the liquid injection hole 33 is formed in the front end of the tunneling steel plate 35, and the distance between the liquid injection hole 33 and the edge of the front end of the tunneling steel plate 35 is set to be 30-50 cm, so that the formed lubricating and solidifying surface layer is more stable through the primary treatment of the tunneling steel plate 35 before the lubricating agent and the solidifying chemical material which are injected from the liquid injection hole 33 are in contact fusion with the surrounding rock sand body, and the advancing resistance of the upper part of the jacking pipe 1 is further reduced.
As shown in fig. 4 and 5, a top plate 31 covering the top area of the top pipe 1 is disposed on the top of the top pipe 1, and a plurality of rolling pulleys 32 are uniformly distributed on the top plate 31. In the structure, the top plate 31 covering the top area is arranged at the top of the jacking pipe 1, when a mud flowing stratum is met, the mud flowing stratum collapses on the top plate 31 of the jacking pipe 1, so that the top plate 31 and the mud flowing stratum are relatively immobile, and the forward resistance of the jacking pipe 1 is greatly reduced through the sliding action generated between the rolling pulley 32 and the jacking pipe 1. In this embodiment, the top plate 31 is installed by being placed on one side below the heading steel plate 35 and being pulled in by a winch on the other side to be placed on the heading steel plate 35.
As shown in fig. 4, the distance between the plurality of sets of the rolling pulleys 32 is 40 cm. In this embodiment, the distance between the adjacent rolling pulleys 32 is set to be 40cm, and the setting of the distance effectively ensures the sliding action between the top plate 31 and the rolling pulleys 32, and reduces the forward resistance of the upper part of the jacking pipe 1.
As shown in fig. 4 and 5, the length of the top plate 31 is 1.0 to 1.2 m. In this embodiment, the length of the top plate 31 is set to 1.0m to 1.2m, so that on one hand, the production cost of the equipment is saved, and on the other hand, the forward resistance of the upper part of the jacking pipe 1 is effectively reduced.
As shown in fig. 3, a steel plate 24 is further disposed on the bottom plate 21, the limiting side plates 22 are disposed on two sides of the steel plate 24, positioning holes 25 for connecting the plurality of steel plates 24 are disposed at front and rear ends of the steel plate 24, and the positioning holes 25 are located at the connection positions between adjacent steel plates 24. In this embodiment, the positioning holes 25 can be used to fixedly connect the adjacent steel plates 24, and the positioning holes 25 are used to connect the plurality of steel plates 24, so that the front and rear heights of the steel plates 24 can be adjusted to adjust the center point of the top pipe 1, and meanwhile, the included angle of the pulley circular plate in the limiting side plate can be adjusted to realize left deviation or right deviation of the top pipe 1.
As shown in fig. 3, the bottom plate 21 is further provided with the steel plate 24, and the limiting side plate 22 is formed by bending the steel plate 24 at one time. In this embodiment, the limiting side plate 22 is formed by bending the steel plate 24 at one time, so as to provide a strong guarantee for stable installation of the round rolling steel bar wheel slide 23.
In order to further explain the working principle and technical effect of the present invention, the following description will be made of the working process of the present invention.
As shown in fig. 2 to 6, firstly, the lower foundation contacted with the lower wheel sliding plate is processed to ensure that the foundation bearing capacity of the foundation is more than 30 percent of the sum of the self weight of the upper jacking pipe and the load of the surrounding rock on the upper part of the attached jacking pipe, then the lower wheel sliding plate is horizontally arranged on the foundation, the tunneling steel plate is fixed at the front end of the top of the jacking pipe, then the jacking pipe is pushed to move forwards under the action of an oil cylinder, the front section of the tunneling steel plate is inserted into the surrounding rock sandy soil, meanwhile, a grouting machine is opened to inject the lubricating consolidation grouting liquid into the sandy soil through the liquid injection hole, after the tunneling steel plate moves forward for a certain distance, through the extrusion effect of the step-shaped steel belt, the sand on the upper part of the jacking pipe forms a layer of temporary consolidation lubricating surface layer, the lower wheel sliding plate at the lower part of the jacking pipe and the tunneling steel plate at the upper part of the jacking pipe work simultaneously, and the stress center of the lower wheel sliding plate is ensured to be coincided and contacted with the jacking pipe load center. After the constructor safely finishes excavating the sandy soil under the tunneling steel plate, the second lower wheel sliding plate is fixedly connected with the front lower wheel sliding plate and continuously and repeatedly pushed to finish the operation. When the surrounding rock on the upper part of the jacking pipe is a soft mud layer, the continuous advancing of the jacking pipe is ensured through the sliding action of the rolling pulley and the top plate in the advancing process.
It should be noted that "front" and "rear" in the present invention refer to the direction of forward movement of the top pipe, and refer to the direction of forward movement of the top pipe as "front" and the direction of backward movement of the top pipe as "rear". As shown in fig. 6, the cross section of the pipe jacking 1 in fig. 6 is rectangular, so the utility model is also suitable for the pipe gallery engineering of semicircular, rectangular and arched broken stones in the prior art.
The above embodiments are only for illustrating the present invention, and are not intended to limit the present invention, and those skilled in the relevant art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions also belong to the scope of the present invention.
Claims (9)
1. The jacking pipe adopts lower skidding steel plate and platform extrusion consolidation device when meeting the stratum of collapsing, and is characterized by comprising a jacking pipe (1), a lower skidding steel plate (2) and a tunneling steel plate (35), wherein the lower skidding steel plate (2) comprises a bottom plate (21), limiting side plates (22) and round rolling steel bar skidding (23), the bottom plate (21) is fixed on the bottom central line of the jacking pipe (1), the limiting side plates (22) are symmetrically arranged on the two sides of the bottom central line of the jacking pipe (1) on the bottom plate (21), the round rolling steel bar skidding steel bar (23) is perpendicular to the limiting side plates (22) and is arranged at intervals in two grooves formed by the limiting side plates (22), and the tunneling steel plate (35) is arranged on the upper part of the front end of the jacking pipe (1).
2. The jacking pipe collapse stratum extrusion consolidation device adopting the lower skidding steel plate and the platform according to claim 1, wherein a plurality of liquid injection holes (33) are uniformly formed in the front end of the tunneling steel plate (35), and the distance between the liquid injection holes (33) and the edge of the front end of the tunneling steel plate (35) is 30-50 cm.
3. The jacking pipe collapse stratum extrusion consolidation device adopting the lower skidding steel plate and the platform according to claim 2, wherein a raised steel belt (34) is further arranged on the tunneling steel plate (35), the steel belt (34) is positioned between the liquid injection hole (33) and the jacking pipe (1), and the width of the steel belt (34) is equal to that of the tunneling steel plate (35).
4. The jacking pipe collapse stratum extrusion consolidation device adopting the lower roller-sliding steel plate and the platform according to claim 3, wherein the steel belt (34) is a step-shaped steel belt, and the height of the front end of the step-shaped steel belt (34) is lower than that of the rear end.
5. The jacking pipe collapse stratum extrusion consolidation device adopting the lower skidding steel plate and the platform according to claim 4, wherein the length of the tunneling steel plate (35) is 1.0-1.5 m.
6. The jacking pipe collapse stratum extrusion and consolidation device adopting the lower roller-sliding steel plate and the platform according to claim 1, characterized in that the top of the jacking pipe (1) is provided with a top plate (31) covering the top area of the jacking pipe (1), and a plurality of rolling pulleys (32) are uniformly distributed on the top plate (31).
7. The jacking pipe collapse stratum extrusion consolidation device adopting the lower roller-sliding steel plate and the platform is characterized in that the distance between the multiple groups of rolling pulleys (32) is 40 cm.
8. The jacking pipe collapse stratum extrusion consolidation device adopting the lower roller-skating steel plate and the platform according to claim 7, wherein the length of the top plate (31) is 1.0-1.2 m.
9. The jacking pipe collapse stratum extrusion consolidation device adopting the lower skidding steel plate and the platform according to claim 2, wherein the bottom plate (21) is further provided with a steel plate (24), and the limiting side plate (22) is formed by bending the steel plate (24) in one step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822222268.6U CN210317345U (en) | 2018-12-28 | 2018-12-28 | Extrusion consolidation device for adopting lower roller-skating steel plate and platform for collapse stratum of jacking pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822222268.6U CN210317345U (en) | 2018-12-28 | 2018-12-28 | Extrusion consolidation device for adopting lower roller-skating steel plate and platform for collapse stratum of jacking pipe |
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| Publication Number | Publication Date |
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| CN210317345U true CN210317345U (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822222268.6U Active CN210317345U (en) | 2018-12-28 | 2018-12-28 | Extrusion consolidation device for adopting lower roller-skating steel plate and platform for collapse stratum of jacking pipe |
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|---|---|
| CN (1) | CN210317345U (en) |
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2018
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