CN113108123B

CN113108123B - Multi-purpose tool pipe for artificial jacking pipe

Info

Publication number: CN113108123B
Application number: CN202110239773.5A
Authority: CN
Inventors: 王小林; 刘锦戍; 李鹏; 许银; 杨航; 王俊; 田育鹏; 向书田; 郭威
Original assignee: Sinohydro Bureau 5 Co Ltd
Current assignee: Sinohydro Bureau 5 Co Ltd
Priority date: 2021-03-04
Filing date: 2021-03-04
Publication date: 2022-06-14
Anticipated expiration: 2041-03-04
Also published as: CN113108123A

Abstract

The invention discloses an artificial pipe jacking multipurpose tool pipe which comprises a tool pipe body, a sliding support assembly, a plugging assembly and a blade foot, wherein the sliding support assembly is arranged on the tool pipe body; the sliding support assembly is arranged at the top of the inner side of the tool pipe body and comprises an L-shaped arc-shaped sliding plate with a horizontally arranged cross section, the sliding support assembly comprises an arc-shaped sliding plate and a vertical base plate at the left end, the vertical base plate is provided with a plurality of horizontal thread circular grooves, and support circular rod groups arranged along the length direction of the arc-shaped sliding plate are arranged in the horizontal thread circular grooves; the blocking assembly comprises a circular closing plate, and the closing plate is divided into an upper plate and a lower plate. The invention can greatly reduce the safety risk of the operation outside the pipe, provide the subsequent operation space, deal with more complex underground conditions, effectively, quickly and conveniently temporarily block the underground pipe and reduce the additional measures of pipe-jacking construction; the construction progress can be effectively accelerated, the construction efficiency is improved, the construction period is shortened, and the management and construction cost is saved.

Description

Multi-purpose tool pipe for artificial jacking pipe

Technical Field

The invention relates to the field of underground pipeline trenchless construction, in particular to an artificial pipe-jacking multipurpose tool pipe.

Background

The pipe-jacking construction is a construction method of underground pipelines developed after shield construction, does not need to excavate a surface layer, and can pass through highways, railways, rivers, ground buildings, underground structures, various underground pipelines and the like. In the pipe jacking construction, by means of the thrust of a main jacking oil cylinder, an inter-pipeline relay and the like, a tool pipe or a heading machine is pushed from a working well through a soil layer until the tool pipe or the heading machine is hoisted in a receiving well. Meanwhile, the pipeline following the tool pipe or the heading machine is buried between two wells, so that the construction method for laying underground pipelines without excavating is realized.

Through years of development, the pipe jacking technology has been applied to a large number of practical projects in China, keeps the high-speed growth momentum, makes great progress in technology, pipe jacking equipment and construction technology, and even reaches the world leading level in some aspects. In 2001, Shanghai Tunnel GmbH completes reinforced cement pipe jacking engineering with the length of 2050m and the diameter of 2m in Changzhou of Jiangsu province, and is the longest finished jacking engineering in China. The 2050m ultra-long distance reinforced concrete jacking pipe is pushed once in the sewage treatment and drainage engineering of Jiaxing city of 8-12 months in 2001, and due to the fact that a reasonable pipe jacking machine type is selected, the technical problems of drag reduction slurry application, axis control and the like are successfully solved, all jacking construction is completed in about 5 months, and a new pipe jacking construction record is created. The steel pipe with the total length of 3600m and the pipe diameter of 1.8 m successfully traverses the yellow river from the underground with the depth of 23-25 m in 2002 and 9 months, and is the first time in China no matter from the jacking length, the burial depth and the geological conditions, or the diameter of the steel pipe. The longest section of the large-diameter steel pipe is positioned on the main riverbed of the yellow river, reaches 1259 meters, and also passes through a thicker gravel layer and a main riverway of the yellow river, so that the large-diameter steel pipe is not only a key project for the west-east gas transmission in China, but also a pipe jacking project with the longest length for one-time jacking of the large-diameter steel pipe under complex geological conditions in the world. In 2001 Yu City sewage treatment projects, a glass fiber yarn clamping tube was successfully applied to jacking pipes for the first time. In 2008, the ten departments of iron in the water diversion project of the Wuxi Yangtze river adopt domestic equipment with the diameter of 2200mm to synchronously jack a double pipe for 2500 m. The projects all indicate that the construction level of the jacking pipe in China reaches a new height, and the construction level is increasingly close to the advanced level in the world.

The pipe jacking project is mostly located in urban main roads, urban underground pipelines are various in distribution and complex in arrangement, all pipelines in a jacking route cannot be found through ground exploration data and the prior art, and many pipelines can be found in the jacking process. Although the existing pipe jacking construction technology in China tends to be mechanized, mechanical pipe jacking cannot foresee unexplored pipelines in the jacking process, so that pipeline damage can be caused, the urban pipeline damage result is serious, the influence range is large, in addition, the construction operation area is limited under the influence of traffic, and therefore, the mode of manual pipe jacking is mostly adopted in pipe jacking engineering in urban areas.

During the jacking construction of the manual jacking pipe, various complex geological conditions, mud gushing, sand gushing, underground water, hard obstacles, various unexplored pipelines, high-voltage cables, fuel gas, communication lines, dragging pipes and the like are involved. Common artificial jacking pipes are often jacked to various obstacles and hard rock surfaces without subsequent working space or effective support, and the working safety risk is extremely high.

Disclosure of Invention

The technical problem to be solved by the invention is to provide an artificial pipe-jacking multipurpose tool pipe, which is used for providing a temporarily-blocked artificial pipe-jacking tool pipe when continuous operation cannot be performed on the premise of ensuring construction safety and engineering quality; the artificial pipe jacking tool pipe can advance support when hard rock and unfavorable geology are met, and provides an operation surface for subsequent operation. The safety risk of external operation of the pipe jacking is reduced, additional measures are reduced, the construction efficiency of the manual pipe jacking is improved, the processing period of complex geology and unknown pipelines is shortened, and the construction and management cost is saved.

In order to solve the technical problem, the invention provides an artificial push pipe multipurpose tool pipe which comprises a tool pipe body, a sliding support assembly, a plugging assembly and a blade foot, wherein the sliding support assembly is arranged on the tool pipe body; the tool pipe body is arranged at the head position of the top pipe; the sliding support component can be axially and slidably arranged at the top of the inner side of the tool tube body along the inner wall of the tool tube body, the sliding support component comprises an arc-shaped sliding plate which is horizontally arranged and a vertical base plate which is fixed at the left end of the top of the arc-shaped sliding plate, a plurality of horizontal thread circular grooves are formed in the vertical base plate of the arc-shaped sliding plate, support circular rod groups which are arranged along the length direction of the arc-shaped sliding plate are arranged in the horizontal thread circular grooves, and a jacking device is further arranged at the tail end of the left side of the vertical base plate; the cutting edge comprises an annular cutting edge body, the cross section of the cutting edge body is in a right-angled trapezoid shape, and the oblique side faces the advancing direction; the inner side surface of the blade foot main body is also provided with a mounting groove, and the plugging component is fixed in the mounting groove; the blocking assembly comprises a circular blocking plate, the blocking plate is divided into an upper plate and a lower plate, and the upper plate and the lower plate are detachably connected; and a pressure relief hole switch are arranged on the lower plate at a position away from the ground 1/3.

In particular, the upper plate occupies 30% of the cross-sectional area of the tool tube body, and the lower plate occupies 70% of the cross-sectional area of the tool tube body.

Furthermore, the inner side surface of the upper plate is provided with a vertical handle, and the inner side surface of the lower plate is provided with a transverse handle.

Particularly, the lower surface of the upper plate is provided with an L-shaped buckle, the upper surface of the lower plate is provided with an L-shaped bayonet, and the upper plate and the lower plate are detachably connected through the L-shaped buckle and the L-shaped bayonet.

Particularly, the supporting round rod group comprises a plurality of supporting round rods, and each supporting round rod comprises a top section, a middle section and a foundation section; the outer side walls of the top section and the middle section are provided with jaws, and the upper end of the top section is provided with a conical head; the base section passes through horizontal screw thread circular slot detachably and sets up in vertical base plate, between top section and the middle section, all can dismantle through external screw thread pole and internal thread groove between middle section and the base section and be connected.

Particularly, two U-shaped sliding grooves which are arranged in opposite directions are formed in the top of the inner side of the tool tube body, and the sliding support assembly is slidably arranged inside the tool tube body through the U-shaped sliding grooves.

Furthermore, the U-shaped sliding groove is connected with the main reinforcement body inside the tool tube body into a whole when the tool tube body is prefabricated and molded.

Particularly, a positioning line is arranged in the middle of the inner side surface of the arc-shaped sliding plate.

Furthermore, fixed blocks are arranged on the left side and the right side of the front end and the tail end of the lower surface of the arc-shaped sliding plate, and the height of each fixed block and the thickness of the arc-shaped sliding plate are slightly smaller than the opening width of the U-shaped sliding groove.

The invention has the beneficial effects that: the invention can greatly reduce the safety risk of the operation outside the pipe, provide the subsequent operation space, deal with more complex underground conditions, effectively, quickly and conveniently plug temporarily and reduce the additional measures of pipe-jacking construction. Compared with the traditional mode, the plugging device is short in plugging time consumption, good in effect and convenient to remove in the later period, can effectively accelerate the construction progress, improves the construction efficiency, shortens the construction period and saves the management and construction cost.

Drawings

Fig. 1 is an axial sectional structural view of the present invention.

FIG. 2 is a schematic view of a closing plate structure.

Fig. 3 is a cross-sectional view taken along line a-B of fig. 2.

Figure 4 is a schematic view of the outer side of the sliding support assembly.

Fig. 5 is a schematic diagram of the inner side surface structure of the sliding support assembly.

Fig. 6 is a schematic structural view of the outer side surface of the advance support part.

Fig. 7 is a schematic view of the inner side surface of the advance support part.

The definitions of the reference symbols in the figures are: a tool tube body-1; a blade foot-2; a mounting groove-21; an arc-shaped sliding plate-31; a horizontal thread circular groove-32; a positioning line-33; a fixed block-34; a vertical base-35; a closing plate-4; an upper plate-41; a lower plate-42; an L-shaped buckle-43; an L-shaped bayonet-44; -45 pressure relief holes; a supporting round rod-5; top section-51; a middle section-52; a base section-53; a jaw-54; a cone head-55; a U-shaped chute-6; and a jacking device-61.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The invention relates to an artificial pipe jacking multipurpose tool pipe, which comprises a tool pipe body 1, a sliding support assembly, a plugging assembly and a blade 2; the tool pipe body 1 is arranged at the head position of the top pipe; the sliding support component can be arranged at the top of the inner side of the tool tube body 1 in an axial sliding manner along the inner wall of the tool tube body 1, the sliding support component comprises an arc-shaped sliding plate 31 arranged horizontally and a vertical base plate 35 fixed at the left end of the top of the arc-shaped sliding plate 31, a plurality of horizontal threaded circular grooves 32 are formed in the vertical base plate 35 of the arc-shaped sliding plate 31, supporting circular rod groups arranged along the length direction of the arc-shaped sliding plate 31 are arranged in the horizontal threaded circular grooves 32, and a jacking device 61 is further arranged at the tail end of the left side of the vertical base plate 35; the cutting edge 2 comprises an annular cutting edge main body, the cross section of the cutting edge main body is in a right-angled trapezoid shape, and the oblique side faces the advancing direction; the inner side surface of the blade foot main body is also provided with a mounting groove 21, and the plugging component is fixed in the mounting groove 21; the blocking assembly comprises a circular blocking plate 4, the blocking plate 4 is divided into an upper plate 41 and a lower plate 42, and the upper plate 41 and the lower plate 42 are detachably connected; the lower plate 42 is provided with a pressure relief hole 45 and a pressure relief hole switch at a radius from the ground 1/3.

As a preferred embodiment, the upper plate 41 occupies 30% of the cross-sectional area of the tool tube body 1, and the lower plate 42 occupies 70% of the cross-sectional area of the tool tube body 1; the division of the closing plate 4 into the upper plate 41 and the lower plate 42 can facilitate the targeted selection of the closing mode according to the actual needs on site, and the split closing plate 4 also facilitates the later-stage quick removal.

As a further example, the inner side surface of the upper plate 41 is provided with a vertical handle, and the inner side surface of the lower plate 42 is provided with a horizontal handle; the vertical handle and the horizontal handle are convenient for a single person to install and remove the upper plate 41 and the lower plate 42.

In a preferred embodiment, an L-shaped latch 43 is disposed on a lower surface of the upper plate 41, an L-shaped bayonet 44 is disposed on an upper surface of the lower plate 42, and the upper plate 41 and the lower plate 42 are detachably connected through the L-shaped latch 43 and the L-shaped bayonet 44.

As a preferred embodiment, the supporting rod set includes a plurality of supporting rods 5, and the supporting rods 5 include a top section 51, a middle section 52 and a base section 53; the outer side walls of the top section 51 and the middle section 52 are both provided with a jaw 54, and the upper end of the top section 51 is provided with a conical head 55; the base section 53 is detachably arranged in the arc vertical substrate 35 through a horizontal thread circular groove 32, and the top section 51 and the middle section 52, and the middle section 52 and the base section 53 are detachably connected through an external thread rod and an internal thread groove; the length of the round supporting rod 5 can be adjusted by increasing the number of the middle sections 52 according to actual needs by dividing the round supporting rod 5 into three sections, so that the length of the round supporting rod can be lengthened when the soil body is high in water content and obvious in upper soil body collapse in the face of unfavorable geology, and the purpose of ensuring the safety of operating personnel is achieved.

As a preferred embodiment, two U-shaped sliding chutes 6 arranged oppositely are arranged at the top of the inner side of the tool tube body 1, the sliding support assembly is slidably arranged inside the tool tube body 1 through the U-shaped sliding chutes 6, and an jacking device 61 is further arranged at the tail end of the sliding support assembly; the U-shaped chute 6 provides a sliding track for the arc-shaped sliding plate 31, and the jacking device 61 provides a jacking power source for the arc-shaped sliding plate 31.

As a further embodiment, the U-shaped sliding groove 6 is integrally connected with the main reinforcement inside the tool tube body 1 when the tool tube body 1 is prefabricated.

As a preferred embodiment, a positioning line 33 is arranged in the middle of the inner side surface of the arc-shaped sliding plate 31; the positioning line 33 is used for indicating an alarming position, when the pushing device 61 pushes the arc-shaped sliding plate 31 forward, the maximum pushing length is not enough to enable the positioning line 33 to exceed the top pipe, so as to prevent the arc-shaped sliding plate 31 from being pushed out of the U-shaped sliding chute 6 too long to provide enough supporting force due to too long pushing distance.

As a further embodiment, fixed blocks 34 are respectively disposed at the left and right sides of the middle front end and the middle rear end of the lower surface of the arc-shaped sliding plate 31, and the height of the fixed blocks 34 plus the thickness of the arc-shaped sliding plate 31 is slightly smaller than the opening width of the U-shaped sliding chute 6; the arc-shaped sliding plate 31 slides in the U-shaped chute 6 under the action of the jacking device 61, when the front end of the arc-shaped sliding plate 31 is inserted into the soil body in front, the front end of the arc-shaped sliding plate 31 bears the gravity action of the soil body collapsed from above, the middle rear end fixing block 34 is also positioned in the U-shaped chute 6, the middle rear end fixing block 34 serves as a fulcrum, and the whole arc-shaped sliding plate 31 forms a lever to provide more powerful support for the arc-shaped sliding plate 31. The middle front end fixing block 34 is used for matching with the middle rear end fixing block 34, so that the arc-shaped sliding plate 31 is kept in a horizontal state when being pushed in the U-shaped sliding chute 6.

The invention mainly comprises two parts, one part is a temporary closed part, and the other part is an advance support part.

The temporary sealing part is mainly used for temporarily sealing the tunnel face of the jacking pipe in order to prevent water and soil loss from generating a cavity because the problem cannot be solved in time when the jacking process of the manual jacking pipe meets a pipeline or unfavorable geology. The traditional plugging mode is brick plugging, the time consumption is long, the plugging is troublesome, the effect is poor, and the later-stage dismantling is troublesome. The technical scheme adopted by the invention is that a ring-shaped steel cutting edge 2 with the length of 0.3m and the right trapezoid cross section is arranged at the head of a tool tube through a temporary sealing part, so that the jacking resistance is reduced, and a 0.1m mounting groove 21 is arranged on the inner side surface of a cutting edge main body and used for fixing a sealing plate 4. When temporary plugging is needed and the plugging time is short, only the lower part of the lower. When temporary plugging is needed and the plugging time is long, on the basis that the lower plate 42 is well sealed, the L-shaped buckle 43 at the lower end of the upper plate 41 is embedded into the L-shaped bayonet 44 on the upper surface of the lower plate 42, and the upper plate 41 is slightly pushed and pulled to enable the lower end protrusion of the L-shaped buckle 43 to be inserted into the lower end recess of the L-shaped bayonet 44, so that the effect of preventing the upper plate 41 from being turned and bent is achieved. The upper plate 41 is provided to be light in weight and 1 person can perform the operation. The lower plate 42 is provided with a pressure relief hole, when the temporary plugging time is long, the totally-closed plugging is adopted, when the plugging is removed, in order to ensure safety, the pressure relief hole 45 can be opened through a pressure relief hole switch, and the plugging is removed after no overlarge pressure intensity exists.

The advanced support part mainly aims at the conditions of unfavorable geology, unknown pipelines, cavities, broken rock masses and slight collapse of soil mass in front of the jacking pipe, so that the operation safety of operators outside the pipe is ensured, and meanwhile, an enough construction operation surface is provided. The forepoling part mainly comprises a support round bar group, an arc-shaped sliding plate 31 and a jacking device 61. The supporting force of the support is provided by inserting the support round rod group into the soil body and the inner part of the pipe, and extending the arc-shaped sliding plate 31 out of the outer part of the pipe.

The specific operation steps and the flow are as follows: when a complex condition occurs in the jacking process of the jacking pipe, the jacking device 61 is started, the supporting round bar group is pushed to extend out of the jacking pipe firstly, when the supporting round bar group is inserted into the soil body, the jacking device also pushes the arc-shaped sliding plate 31 out of the pipe and inserts the soil body until the soil body cannot be pushed in or the arc-shaped sliding plate 31 reaches a safety warning value, the forward jacking is not continued, at the moment, an operator can start to dig the soil, and the operator operates under the arc-shaped sliding plate 31 to perform pipeline treatment or break rocks. The adoption of advance support can provide at least 0.6m of safe working space.

When an unknown pipeline is encountered right ahead of the jacking pipe and cannot be damaged, the top section 51 and the middle section 52 of the supporting round rod 5 can be temporarily detached firstly, and the arc-shaped sliding plate 31 provides support to avoid the supporting round rod 5 from being inserted into soil to damage the pipeline.

When unfavorable geology is met right ahead of the jacking pipe, the water content of the soil body is high, and the upper soil body collapses obviously, the supporting round rod group can be detached firstly, the middle section 52 is increased, the length of the supporting round rod 5 is prolonged, the supporting length is lengthened, and therefore the purpose of guaranteeing the safety of operating personnel is achieved.

The terms "connected" and "fixed" in the present invention may be fixed, formed, welded, or mechanically connected, and the specific meaning of the terms in the present invention is understood.

In the description of the present invention, the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc. are used in the orientation or positional relationship indicated only for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element referred to must have a particular orientation and therefore should not be construed as limiting the present invention.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; while the invention has been described in detail and with reference to the foregoing embodiments, those skilled in the art will appreciate that; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multipurpose tool pipe for an artificial jacking pipe comprises a tool pipe body (1), a sliding support assembly, a plugging assembly and a blade foot (2); the tool pipe is characterized in that the tool pipe body (1) is arranged at the position of the head of the top pipe; the sliding support component can be axially arranged at the top of the inner side of the tool tube body (1) along the inner wall of the tool tube body (1) in a sliding manner, the sliding support component comprises an arc-shaped sliding plate (31) which is horizontally arranged and a vertical base plate (35) which is fixed at the left end of the top of the arc-shaped sliding plate (31), a plurality of horizontal threaded circular grooves (32) are formed in the vertical base plate (35) of the arc-shaped sliding plate (31), supporting circular rod groups which are arranged along the length direction of the arc-shaped sliding plate (31) are arranged in the horizontal threaded circular grooves (32), and a jacking device (61) is further arranged at the tail end of the left side of the vertical base plate (35); the supporting round rod group comprises a plurality of supporting round rods (5), and each supporting round rod (5) comprises a top section (51), a middle section (52) and a foundation section (53); the outer side walls of the top section (51) and the middle section (52) are respectively provided with a jaw (54), and the upper end of the top section (51) is provided with a conical head (55); the base section (53) is detachably arranged in the vertical base plate (35) through a horizontal thread circular groove (32), and the top section (51) and the middle section (52) as well as the middle section (52) and the base section (53) are detachably connected through an external thread rod and an internal thread groove; the cutting edge (2) comprises an annular cutting edge main body, the cross section of the cutting edge main body is in a right-angled trapezoid shape, and the oblique side faces the advancing direction; the inner side surface of the blade foot main body is also provided with a mounting groove (21), and the plugging component is fixed in the mounting groove (21); the blocking assembly comprises a circular blocking plate (4), the blocking plate (4) is divided into an upper plate (41) and a lower plate (42), and the upper plate (41) and the lower plate (42) are detachably connected; a pressure relief hole (45) and a pressure relief hole switch are arranged on the lower plate (42) at a position away from the ground 1/3; an L-shaped buckle (43) is arranged on the lower surface of the upper plate (41), an L-shaped bayonet (44) is arranged on the upper surface of the lower plate (42), and the upper plate (41) and the lower plate (42) are detachably connected through the L-shaped buckle (43) and the L-shaped bayonet (44).

2. The multipurpose tool pipe as claimed in claim 1, wherein the upper plate (41) occupies 30% of the cross-sectional area of the tool pipe body (1), and the lower plate (42) occupies 70% of the cross-sectional area of the tool pipe body (1).

3. The multi-purpose tool pipe of claim 2, wherein the upper plate (41) has a vertical grip on the inside surface thereof, and the lower plate (42) has a horizontal grip on the inside surface thereof.

4. The multipurpose tool pipe for artificial push pipes according to claim 1, wherein the tool pipe body (1) is provided at the top of the inner side thereof with two U-shaped sliding grooves (6) disposed oppositely, and the sliding support assembly is slidably disposed inside the tool pipe body (1) through the U-shaped sliding grooves (6).

5. The multipurpose tool pipe for artificial push pipes according to claim 4, wherein the U-shaped sliding groove (6) is integrally connected with the main reinforcement inside the tool pipe body (1) when the tool pipe body (1) is prefabricated.

6. The multipurpose tool pipe for artificial push pipes according to claim 1, wherein the curved sliding plate (31) has a positioning line (33) in the middle of its inner surface.

7. The multipurpose tool pipe for artificial push pipes according to claim 4, wherein the left and right sides of the front and rear ends of the lower surface of the arc-shaped sliding plate (31) are provided with fixing blocks (34), and the height of the fixing blocks (34) plus the thickness of the arc-shaped sliding plate (31) is slightly smaller than the opening width of the U-shaped sliding chute (6).