CN111502682B - Trenchless pipe jacking construction device and construction method - Google Patents
Trenchless pipe jacking construction device and construction method Download PDFInfo
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- CN111502682B CN111502682B CN202010254960.6A CN202010254960A CN111502682B CN 111502682 B CN111502682 B CN 111502682B CN 202010254960 A CN202010254960 A CN 202010254960A CN 111502682 B CN111502682 B CN 111502682B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
Abstract
The invention discloses a trenchless pipe-jacking construction device and a construction method.A control rod is arranged in the upper part of an operation cavity of a sliding top platform of a jack of the construction device, the lower end of the control rod is connected with an operation convex strip, the sliding top platform is provided with an operation hole below the operation convex strip, an adjusting ring is respectively inserted into the operation hole, the adjusting ring is connected with a hydraulic stroke rod, the outer wall of the adjusting ring is provided with an operation groove, and the lower end of the operation convex strip is matched with the operation groove; a lateral columnar jacking column for pipe installation is connected to the side surface of the sliding jacking platform between the two adjusting rings; its influence that reduces the traffic reduces working face occupation space for can reach the construction requirement on the more narrow and small intensive old city district road in space, the back is accomplished in the pipe jacking construction, and usable work hole and receiving hole direct construction inspection shaft avoid the repeated excavation town road of inspection shaft construction, effectively reduce the influence of construction to the traffic, and is high-efficient swift, safety ring protects.
Description
Technical Field
The invention belongs to the technical field of building equipment, and particularly relates to a trenchless pipe jacking construction device and a trenchless pipe jacking construction method.
Background
At present, the construction limitation is very large at the dense place of houses in old cities, the complicated place of pipelines in shallow layers (about 1m away from the earth surface) and the narrow place of road space, the construction pipeline of the traditional excavation method occupies large space and long time, and particularly has great influence on the traffic in the old cities with narrow space and dense traffic flow; and tradition is dragged a tub construction again because there is to begin the construction from ground, can not explore well and protect underground pipeline, need increase working distance for reaching the design elevation moreover, it is big to lead to need occupation space when hot welded joint pipe reaches when dragging the pipeline, and the pipeline line type is the arc, leads to depositing a great deal of problems such as water easily for can't reach the construction requirement on the narrow and small pipeline intensive old city road in space. Therefore, a branch pipe network construction scheme is needed to solve the problems, reduce the influence on traffic, reduce the occupied space of a working face, and have the advantages of high efficiency, rapidness, safety and environmental protection.
Disclosure of Invention
The invention aims to solve the problems that the underground pipeline cannot be well explored and protected when the construction is started from the ground in the prior art, the working distance needs to be increased to reach the design elevation, the occupied space is large when a pipe is thermally welded and dragged, the water is easy to store due to the arc-shaped pipeline line type, and the like, so that the influence on traffic is reduced, the occupied space of a working surface is reduced, the construction requirement can be met on the old city road with the compact pipeline, and the method has the advantages of high efficiency, rapidness, safety and environmental protection.
The invention provides a trenchless pipe jacking construction device which comprises a jack (1), wherein the jack (1) comprises a support, the support comprises a transverse bottom support plate and a longitudinal side support plate, the bottom support plate is connected with the side support plate, two parallel slide rails (101) are arranged on the bottom support plate, a sliding top table (102) is arranged on the slide rails (101), longitudinal through hole type operation cavities are respectively arranged inside the left side and the right side of the sliding top table (102), operation rods (106) respectively extend into the upper parts of the operation cavities, operation convex strips are respectively connected to the lower ends of the operation rods (106), the operation convex strips are all positioned in the operation cavities, the sliding top table (102) is respectively provided with transverse through hole type parallel operation holes below the operation convex strips, and transverse columnar parallel adjustment rings (104) respectively extend into the operation holes, a transverse and parallel hydraulic stroke rod (103) is respectively connected between one end of the adjusting ring (104) and the side support plate; the outer wall of the adjusting ring (104) is provided with at least two operating grooves (107) which are uniformly distributed at intervals, and the lower ends of the operating convex strips are matched with the operating grooves (107); the side surface of the sliding top table (102) between the two adjusting rings (104) is connected with a horizontal column-shaped top column (105) for pipe installation.
In the above scheme, preferably, the slide rail (101) is rectangular strip-shaped, two mounting grooves matched with the slide rail (101) are arranged on the bottom surface of the sliding top table (102), and the slide rail (101) is respectively mounted in the mounting grooves.
It is also preferable that the operating groove (107) is an annular groove uniformly distributed on the outer wall of the adjusting ring (104), and the plane of the side surface of the operating groove (107) is vertical to the transverse central axis of the adjusting ring (104).
It is also preferable that the operation grooves (107) are rectangular grid-shaped grooves uniformly distributed on the outer wall of the adjusting ring (104), and the planes of the transverse side surfaces of the operation grooves (107) are parallel to the transverse central axis of the adjusting ring (104).
The construction method of the trenchless pipe-jacking construction apparatus according to an aspect of the present invention comprises the steps of,
firstly, surveying and paying off, paying off according to a design drawing, confirming a pipeline starting and stopping well position, surveying whether a construction condition exists or not on site, and marking construction points of a working pit and a receiving pit after a site troubleshooting obstacle is confirmed to reach the construction condition;
secondly, constructing the working pit and the receiving pit, wherein the working pit and the receiving pit are constructed by adopting steel drum excavation sinking, and when the steel drum sinks to a preset required standard height, a bedding layer is poured at the bottom of the well to seal the bottom;
thirdly, installing the trenchless jacking pipe construction device, and welding the bottom support plate of the jack 1 with the supporting barrel to realize the fixed installation of the jack 1;
fourthly, jacking the single-section pipe (2), sleeving one end of the single-section pipe (2) outside the jacking column (105), adjusting the length of the hydraulic stroke rod (103) of the jack (1) to the minimum length, and then increasing the length of the hydraulic stroke rod (103) to jack the single-section pipe (2);
fifthly, when the length of the hydraulic stroke rod (103) reaches the maximum, the operating convex strip is lifted by pulling the operating rod (106), so that the operating convex strip leaves the operating groove (107) where the operating convex strip is located, then the length of the hydraulic stroke rod (103) of the jack (1) is adjusted to the minimum, the hydraulic stroke rod (103) drives the adjusting ring (104) to move to one side of the side supporting plate, the position of the sliding top platform (102) is fixed, the operating convex strip is put down by pulling the operating rod (106) again, so that the operating convex strip falls into the operating groove (107) at the lower position of the operating convex strip to realize buckling and fixing, then the hydraulic stroke rod (103) is continuously jacked, the adjusting ring (104) and the sliding top platform (102) are driven to continue jacking towards the receiving pit direction, and the single-section pipe (2) is jacked;
sixthly, repeating the fifth step until the single-section pipe (2) is jacked;
and seventhly, repeating the fourth step to the sixth step until the jacking of the whole section of the pipe (2) is completed.
In the above aspect, it is preferable that after the seventh step is completed, the eighth step is performed to inspect the construction of the well.
Preferably, in the first step, pipelines and original facilities are avoided, and the occupation of motor vehicle lanes and sidewalks is avoided.
Preferably, in the second step, the working pit and the receiving pit are constructed by respectively excavating and sinking steel drums with the diameters of 2.3m and 1.6 m.
It is also preferable that, in the second step, reinforcement construction is performed before the steel drum is sunk according to geological conditions.
Preferably, in the second step, the reinforcement construction refers to reinforcement around the well by high-pressure jet grouting piles or compaction grouting.
The invention can achieve the following beneficial effects:
the trenchless pipe-jacking construction device and the construction method solve the problems that the underground pipeline cannot be well probed and protected when construction is started from the ground, the working distance needs to be increased to reach the design elevation, the occupied space is large when pipes are thermally welded and pulled, the pipeline line type is arc-shaped, water is easy to store and the like in the prior art, so that the influence on traffic is reduced, the occupied space of a working face is reduced, the construction requirement can be met on old urban roads with dense pipelines in narrow space, after pipe-jacking construction is completed, an inspection well can be directly constructed by using a working pit and a receiving pit, the municipal roads are prevented from being repeatedly excavated by inspection well construction, the influence on traffic is effectively reduced, and the trenchless-efficient, rapid, safe and environment-friendly advantages are achieved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of a minimum stroke state of a jack of the trenchless pipe jacking construction apparatus of the present invention.
Fig. 2 is a schematic diagram of a maximum stroke state of a jack of the trenchless pipe jacking construction apparatus of the present invention.
Fig. 3 is a schematic diagram of a state in the stroke of a jack of the trenchless pipe jacking construction apparatus of the present invention.
Fig. 4 is a schematic view of the construction state of the trenchless pipe jacking construction apparatus of the present invention.
In the figure, 1 is a jack, 101 is a slide rail, 102 is a sliding jacking platform, 103 is a hydraulic travel rod, 104 is an adjusting ring, 105 is a jacking column, 106 is an operating rod, 107 is a clamping groove, 109 is a jacking pipe positioning bulge, 2 is a pipe, 3 is an underground pipeline, 4 is a jacking pipe construction device, 5 is a road surface, and 6 is a vehicle.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1
A trenchless pipe jacking construction device is disclosed, referring to figure 1, comprising a jack 1, wherein the jack 1 comprises a support, the support comprises a transverse bottom support plate and a longitudinal side support plate, see fig. 2, to which the bottom support plate is connected, the bottom support plate is provided with two parallel slide rails 101, a sliding top platform 102 is arranged on the slide rails 101, referring to fig. 3, the left inner part and the right inner part of the sliding top platform 102 are respectively provided with a longitudinal through hole type operation cavity, the upper parts of the operation cavities are respectively inserted with an operation rod 106, the lower ends of the operation rods 106 are respectively connected with operation convex strips, the operation convex strips are all positioned in the operation cavity, the sliding top platform 102 is respectively provided with operation holes which are parallel to the transverse through holes at the positions below the operation convex strips, horizontal columnar parallel adjusting rings 104 respectively extend into the operating holes, and horizontal and parallel hydraulic stroke rods 103 are respectively connected between one ends of the adjusting rings 104 and the side supporting plates; the outer wall of the adjusting ring 104 is provided with at least two operation grooves 107 which are uniformly distributed at intervals, and the lower ends of the operation convex strips are matched with the operation grooves 107; referring to fig. 4, a lateral column-shaped pipe fitting jack 105 is connected to the side surface of the sliding jack 102 between the two adjusting rings 104.
In the trenchless pipe jacking construction device of the embodiment, the operation convex strips are controlled by the operation rod 106 to respectively slide into different operation clamping grooves 107, so that the length of the adjusting ring 104 of the sliding jacking platform 102 is adjusted, the stroke of the jack 1 is increased, and the occupied area of the working surface of the pipe 2 of the pipe jacking is reduced. The telescopic lifting jack 1 with a short stroke achieves the maximum telescopic amount by utilizing the telescopic action of a hydraulic stroke rod 103 in the lifting jack 1 and the telescopic action of an adjusting ring 104 on the outer wall of a sliding jacking platform 102, and the working pit area of the pipe 2 of the jacking pipe is reduced. The operating rod 106 can be connected with the upper inner wall of the operating cavity through a lever shaft, that is, the operating convex strip can be lifted or put down by pulling the operating rod 106 to rotate around the lever shaft, so as to adjust or position the adjusting ring 105. The left and right inner portions of the sliding top 102 are respectively provided with a longitudinal through-hole type operating cavity, which means the left and right inner portions of the sliding top 102 when viewed in the left direction of fig. 1 to 3, i.e., the left-side direction of view.
Example 2
In the trenchless pipe jacking construction apparatus of the present embodiment, based on embodiment 1, the adjusting rings 104 may be further coaxial with the hydraulic trip bars 103, respectively. To increase the stability of the overall structure.
Still further, two hydraulic stroke rods 103 are respectively positioned right above the two slide rails 101. The overall balance stability can also be improved.
Further, the slide rail 101 is rectangular, two mounting grooves matched with the slide rail 101 are formed in the bottom surface of the sliding top table 102, and the slide rail 101 is mounted in the mounting grooves respectively. In this way, the installation of the sliding top 102 can be facilitated.
It is still further possible that the operating groove 107 is an annular groove evenly distributed on the outer wall of the adjustment ring 104, and the plane of the side surface of the operating groove 107 is perpendicular to the transverse central axis of the adjustment ring 104.
Still further, the operating groove 107 is a rectangular grid-shaped groove uniformly distributed on the outer wall of the adjusting ring 104, and the plane of the lateral side of the operating groove 107 is parallel to the lateral central axis of the adjusting ring 104.
The pipe-jacking working pit can be constructed by sinking a steel barrel with the diameter of 2.3m, the wall thickness of the steel barrel is usually 20mm, the wall thickness of the steel barrel can be adjusted according to the depth of the working pit, the occupied space of the steel barrel can be only one lane during urban construction, vehicles can still pass through in two directions in most places, and the problem of large occupied space of the traditional construction method is effectively solved. The length of the pipe 2 of its push pipe, work hole promptly and receive the hole interval to the distance is the same between two inspection shafts of standard requirement pipeline, and the back is accomplished in the pipe 2 construction of push pipe, and usable work hole and the direct construction inspection shaft of receiving hole avoid the repeated excavation town road of inspection shaft construction, effectively reduce the influence of construction to the traffic.
Example 3
A construction method of the trenchless pipe jacking construction apparatus according to embodiment 1 or embodiment 2, comprising the steps of,
firstly, surveying and paying off, paying off according to a design drawing, confirming a pipeline starting and stopping well position, surveying whether a construction condition exists or not on site, and marking construction points of a working pit and a receiving pit after a site troubleshooting obstacle is confirmed to reach the construction condition;
secondly, constructing the working pit and the receiving pit, wherein the working pit and the receiving pit are constructed by adopting steel drum excavation sinking, and when the steel drum sinks to a preset required standard height, a bedding layer is poured at the bottom of the well to seal the bottom;
thirdly, installing the trenchless jacking pipe construction device, and welding the bottom support plate of the jack 1 with the supporting barrel to realize the fixed installation of the jack 1;
fourthly, jacking the single-section pipe 2, sleeving one end of the single-section pipe 2 outside the jacking column 105, adjusting the length of the hydraulic stroke rod 103 of the jack 1 to the minimum length, and then increasing the length of the hydraulic stroke rod 103 to jack the single-section pipe 2;
fifthly, when the length of the hydraulic stroke rod 103 reaches the maximum, the operating convex strip is lifted by pulling the operating rod 106, so that the operating convex strip leaves the operating groove 107 where the operating convex strip is located, then the length of the hydraulic stroke rod 103 of the jack 1 is adjusted to the minimum, the hydraulic stroke rod 103 drives the adjusting ring 104 to move to one side of the side support plate, the sliding top platform 102 is not moved, the operating rod 106 is pulled again to put down the operating convex strip, so that the operating convex strip falls into the operating groove 107 at the position below the operating convex strip to realize buckling and fixing, then the hydraulic stroke rod 103 is continuously jacked, the adjusting ring 104 and the sliding top platform 102 are driven to continue jacking towards the receiving direction, and jacking of the single-section pipe 2 is realized;
sixthly, repeating the fifth step until the single-section pipe 2 is jacked;
and seventhly, repeating the fourth step to the sixth step until the jacking of the whole section of the pipe 2 is finished.
The construction method of the trenchless pipe-jacking construction device reduces the influence on traffic and the occupied space of the working face, so that the construction requirement can be met on the old city road with the narrow and small space and dense pipelines, after pipe-jacking construction is completed, the inspection well can be directly constructed by utilizing the working pit and the receiving pit, repeated excavation of municipal roads in inspection well construction is avoided, the influence of construction on traffic is effectively reduced, and the trenchless pipe-jacking construction device has the advantages of high efficiency, rapidness, safety and environmental protection.
Example 4
The construction method of the trenchless pipe-jacking construction apparatus according to embodiment 3, further comprising an eighth step of inspecting the construction of the shaft after the seventh step is completed.
Furthermore, in the first step, pipelines and original facilities are avoided, and the occupation of motor vehicle lanes and sidewalks is avoided.
Furthermore, in the second step, the working pit and the receiving pit are constructed by respectively adopting steel barrels with the diameters of 2.3m and 1.6m to excavate and sink.
Further, in the second step, the occupied area of the working pit and the receiving pit is not larger than a single lane.
And in the second step, reinforcement construction can be carried out before the steel drum sinks according to the geological condition.
In a second step, the reinforcement construction is to adopt high-pressure jet grouting piles or compaction grouting reinforcement around the well.
Specifically, when surveying and paying off, paying off according to a design drawing, confirming the starting and stopping well positions of the pipelines, surveying whether construction conditions exist on site or not, and keeping away from the pipelines and original facilities and occupying less motor vehicle lanes and sidewalks; and marking construction points of the working pit and the receiving pit after the on-site troubleshooting barriers confirm that the construction conditions are met. When the working pit and the receiving pit are constructed, the working pit and the receiving pit respectively adopt a construction method that steel drums with the diameters of 2.3m and 1.6m are excavated and sunk, the site occupied by the working pit and the receiving pit is the largest single lane, bidirectional traffic of vehicles can be ensured in most places, the steel drums are customized by manufacturers, and corresponding methods are selected according to different geological conditions to carry out reinforcement construction before the steel drums sink (for example, high-pressure jet grouting piles or compaction grouting reinforcement are adopted around a well); and when the steel drum sinks to the elevation required by the design, pouring a cushion layer on the bottom of the well. When the pipe 2 is jacked in, the pipe 2 is a 1m long pipe 2 and is sleeved on a jacking column 105, a jack 1 is firstly adjusted to the minimum stroke position, then the pipe 2 is jacked in by starting the pipe jacking construction device, when the stroke in the jack 1 reaches the maximum, the operation convex strip can be withdrawn through an operation rod 106, so that the operation convex strip leaves an operation groove 107 where the operation convex strip is located, then the length of a hydraulic stroke rod 103 of the jack 1 is adjusted to the minimum length, the hydraulic stroke rod 103 drives an adjusting ring 104 to move towards the lateral side of the plate where the adjusting ring is located, the position of a sliding top table 102 is not moved, the operation rod 106 is pulled again to lower the operation convex strip, so that the operation convex strip is tightly buckled with the corresponding operation groove 107 of the adjusting ring 104, the hydraulic stroke rod 103 is continuously jacked in, and the adjusting ring 104 and the sliding top table 102 are driven to continue jacking towards the receiving pit direction so as to jack in the single-section pipe 2; repeating the above actions until the whole section of pipe jacking is completed. And after the jacking is finished, constructing the inspection well.
Example 5
The construction method of the trenchless pipe-jacking construction device according to embodiment 1 or embodiment 2 is implemented by taking micro pipe-jacking construction with a diameter of less than 600mm in a water system comprehensive treatment project as an example, the single-pass distance of the micro pipe-jacking is not more than 80m and is a straight line, the pipe-jacking size is not more than 600mm, and the pipe-jacking depth is more than 3m, and the trenchless pipe-jacking construction device is mainly used for trenchless construction of small pipes with dense pipes.
Firstly, the construction conditions and the preparation work for construction are carried out,
step one, the miniature pipe-jacking working pit reaches the design elevation, and the next construction can be carried out after the acceptance is qualified;
secondly, carefully checking the design drawings and the description before construction, and confirming that the drawings are correct;
thirdly, whether underground pipelines exist in the jacking range of the jacking pipe is ascertained before the operation, if obstacles such as pipelines exist, measures are taken in advance to avoid the obstacles, the smooth process of the jacking pipe is ensured, and corresponding protective measures are taken in the construction process;
fourthly, relevant materials such as construction machinery, a non-excavation type pipe jacking construction device, the pipe 2 and the like are entered into a field and are checked to be qualified, and the pipe can be put into use;
fifthly, the constructors enter the field in place, train education and go on duty after qualified examination.
Secondly, the construction process comprises the following procedures,
sinking the steel drum and pouring the cushion layer, measuring and paying off, installing pipe jacking equipment, cutting a hole outlet, lowering a guide pipe, carrying out primary reaming, carrying out secondary reaming, forming a hole and carrying out top post-treatment, sinking the steel drum and pouring the cushion layer.
Specifically, in the first step, the miniature pipe-jacking working pits are all supported by steel drums, the steel drums are excavated and sunk by matching workers with cranes due to small sizes of the steel drums, the bottoms of the steel drums are sunk to 50cm below a designed pipeline, after the steel drums are sunk, C15 concrete is used for pouring a 15cm thick cushion layer, and a water collecting pit is arranged on the cushion layer close to the edge of the steel drum, so that the foundation pit can drain water;
secondly, measuring and paying off, wherein a measurement technician uses a laser theodolite to measure the center of a back backrest obtained by paying off and the position of an opening of a pipeline to be manufactured on the steel barrel, and determines the installation of the laser theodolite according to the gradient of the pipeline;
and thirdly, installing pipe jacking equipment, installing the pipe jacking equipment according to a pay-off position, taking the side supporting plate as a rear backrest of the trenchless pipe jacking construction device, enabling the side supporting plate to be of an integral structure with the jacks 1, connecting the lower parts of the side supporting plates with bottom supporting plates made of steel plates, welding the bottom supporting plates and the steel barrel in an aligned mode, installing the equipment after welding and debugging the equipment, enabling the number of the jacks 1 to be two, and monitoring voltage and current data, wherein the jacks 1 are mainly used for synchronously extending and contracting the two jacks 1 smoothly or not.
Fourthly, cutting a tunnel outlet, cutting the steel drum into a position slightly larger than the pipe diameter required by pore forming at the position of the tunnel outlet after the non-excavation type pipe jacking construction device is installed, and installing waterproof measures such as a rubber ring and the like if necessary;
fifthly, lowering the guide pipe, wherein after the trenchless pipe jacking construction device is installed, the guide pipe is lowered, the pipe diameter can be 100mm, jacking is started, and the laser point of the laser theodolite at the pipe head of the guide pipe is observed constantly in the jacking process, so that whether the guide pipe deviates the route or not is determined, the work and correction are required in the process, and the deviation of the guide pipe is corrected at least twice in one time per pipe jacking; when the control measurement is carried out, a laser theodolite (laser beam guide) is installed in a working well and is adjusted according to the designed gradient and direction of a pipeline, a horizontal ruler is installed in a tool pipe, when a jacking pipeline is consistent with the designed position, a laser point can be shot to the bubble center of the horizontal ruler, the jacking quality is free from deviation, and otherwise, the deviation correction is carried out according to the deviation amount;
sixthly, reaming for the first time, after the guide pipe successfully reaches the top pipe receiving well, lowering a steel pipe joint with the pipe diameter of 200mm in the working well, starting jacking construction, and continuing jacking until the steel pipe joint with the pipe diameter of 200mm is lowered in the subsequent jacking until the reaming pipe joint reaches the receiving well;
seventhly, reaming for the second time, putting the tube coupling down, the reaming for the second time is the same with reaming for the first time, and reducing tube coupling major part pipe diameter adopts into a tub pipe diameter, for example: the pipe diameter of the pipe is 300mm, the pipe diameter of the reducing pipe joint is 200-300mm, and the subsequent jacking pipeline is a pipeline designed to be laid; before pipe laying, the appearance of a pipe joint to be jacked is checked, the pipe joint is free of damage and longitudinal cracks, the end face is straight, the pipe wall is free of well sinking or bulging, the pipe wall is smooth and clean, and the qualified pipe joint can be placed in place; until the designed pipeline is completely jacked; the pipe jacking interface adopts an L-shaped chloroprene rubber ring and a semicircular chloroprene rubber ring interface;
eighth, hole forming and top post-treatment are carried out, after the micro top pipe is communicated, the inner wall and the outer wall of the top pipe along the line are checked, the sealing performance of the top pipe is checked, and waterproof cement mortar is adopted for plugging construction only at the joint of the periphery of the pipe opening and the shaft as the pipeline is in a soil extrusion type and is free of mud and earthwork outward transportation; and after the plugging, the sealing performance is tested to be intact, and then the inspection well construction is carried out.
In addition, can set up 2.5 meters high-color steel to key region, enclose fender material thickness and be greater than or equal to 0.8mm, arrange the special messenger to wash each day enclosing fender dust fall, keep enclosing fender and construction site surrounding environment clean and tidy. Before going into the well, toxic gas detectors are needed to detect toxic gases such as CO and methane in the air in the well, before pipe entering, the air in the pipe is detected, and after the pipe is blown and ventilated by an air blower, pipe jacking operation can be carried out. When the hoisting equipment is erected, the ground is required to be solid and flat, the distance between the supporting legs and the foundation pit opening is more than 1.5m, if the ground is soft, firm sleepers are arranged on the lower sides of the supporting legs, and steel plates are arranged on the sleepers. And trial hoisting is carried out before hoisting, so that hoisting operation can be carried out when hoisting equipment operates normally.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A non-excavation type pipe jacking construction device comprises a jack (1), wherein the jack (1) comprises a support, the support comprises a transverse bottom support plate and a longitudinal side support plate, the bottom support plate is connected with the side support plate, two parallel slide rails (101) are arranged on the bottom support plate, a sliding top platform (102) is mounted on the slide rails (101), the non-excavation type pipe jacking construction device is characterized in that longitudinal through hole type operation cavities are respectively arranged inside the left side and the right side of the sliding top platform (102), operation rods (106) respectively extend into the upper portions of the operation cavities, operation convex strips are respectively connected to the lower ends of the operation rods (106), the operation convex strips are all located in the operation cavities, parallel operation holes with transverse through holes are respectively arranged below the operation convex strips on the sliding top platform (102), and transverse columnar parallel adjustment rings (104) respectively extend into the operation holes, a transverse and parallel hydraulic stroke rod (103) is respectively connected between one end of the adjusting ring (104) and the side support plate; the outer wall of the adjusting ring (104) is provided with at least two operating grooves (107) which are uniformly distributed at intervals, and the lower ends of the operating convex strips are matched with the operating grooves (107); the side surface of the sliding top platform (102) between the two adjusting rings (104) is connected with a horizontal columnar top column (105) for pipe installation, and a plurality of top tube positioning bulges (109) are arranged on the sliding top platform (102) on the peripheral side of the top column (105).
2. The trenchless pipe jacking construction equipment as claimed in claim 1, wherein the slide rail (101) is rectangular, and two mounting grooves matched with the slide rail (101) are formed on the bottom surface of the sliding top platform (102), and the slide rails (101) are respectively mounted in the mounting grooves.
3. The trenchless pipe jacking construction equipment as claimed in claim 2, wherein the operation groove (107) is an annular groove uniformly distributed on the outer wall of the adjustment ring (104), and the plane of the side surface of the operation groove (107) is perpendicular to the transverse central axis of the adjustment ring (104).
4. The trenchless pipe jacking construction equipment as claimed in claim 3, wherein the working grooves (107) are rectangular grid-like grooves uniformly distributed on the outer wall of the adjusting ring (104), and the plane of the lateral side surfaces of the working grooves (107) is parallel to the lateral central axis of the adjusting ring (104).
5. A construction method of the trenchless push bench as claimed in any one of claims 1 to 4, comprising the steps of,
firstly, surveying and paying off, paying off according to a design drawing, confirming a pipeline starting and stopping well position, surveying whether a construction condition exists or not on site, and marking construction points of a working pit and a receiving pit after a site troubleshooting obstacle is confirmed to reach the construction condition;
secondly, constructing the working pit and the receiving pit, wherein the working pit and the receiving pit are constructed by adopting steel drum excavation sinking, and when the steel drum sinks to a preset required standard height, a bedding layer is poured at the bottom of the well to seal the bottom;
thirdly, installing the trenchless jacking pipe construction device, and welding the bottom support plate of the jack (1) with a support barrel to realize the fixed installation of the jack (1);
fourthly, jacking the single-section pipe (2), sleeving one end of the single-section pipe (2) outside the jacking column (105), adjusting the length of the hydraulic stroke rod (103) of the jack (1) to the minimum length, and then increasing the length of the hydraulic stroke rod (103) to jack the single-section pipe (2);
fifthly, when the length of the hydraulic stroke rod (103) reaches the maximum, the operating convex strip is lifted by pulling the operating rod (106), so that the operating convex strip leaves the operating groove (107) where the operating convex strip is located, then the length of the hydraulic stroke rod (103) of the jack (1) is adjusted to the minimum, the hydraulic stroke rod (103) drives the adjusting ring (104) to move to one side of the side supporting plate, the position of the sliding top platform (102) is fixed, the operating convex strip is put down by pulling the operating rod (106) again, so that the operating convex strip falls into the operating groove (107) at the lower position of the operating convex strip to realize buckling and fixing, then the hydraulic stroke rod (103) is continuously jacked, the adjusting ring (104) and the sliding top platform (102) are driven to continue jacking towards the receiving pit direction, and the single-section pipe (2) is jacked;
sixthly, repeating the fifth step until the single-section pipe (2) is jacked;
and seventhly, repeating the fourth step to the sixth step until the jacking of the whole section of the pipe (2) is completed.
6. The method of claim 5, wherein after the seventh step is completed, the eighth step is performed to perform the construction of an inspection shaft.
7. The trenchless pipe-jacking construction method of claim 5, wherein in the first step, the pipeline and the original facilities are avoided, and the occupation of the motor vehicle lane and the sidewalk is avoided.
8. The trenchless pipe-jacking construction method of claim 5, wherein in the second step, the working pit and the receiving pit are constructed by digging and sinking a steel drum having a diameter of 2.3m and 1.6m, respectively.
9. The trenchless pipe jacking construction method according to claim 5, wherein in the second step, reinforcement is performed before the steel drum is sunk according to geological conditions, and the reinforcement is performed by using high-pressure jet grouting piles or compaction grouting around the well.
10. The construction method of the trenchless pipe jacking construction device according to claim 5, wherein if the diameter of the pipeline is less than 600mm, a hole is expanded before jacking the pipe joint, comprising the following steps:
firstly, lowering a guide pipe, starting jacking, and constantly observing a laser point of a laser theodolite at the head of the guide pipe in the jacking process so as to determine whether the guide pipe deviates a route, wherein the correction is required frequently in the process, and the correction is performed at least twice once when the guide pipe is jacked; when the control measurement is carried out, the laser theodolite is installed in a working well and is adjusted according to the designed gradient and direction of a pipeline, meanwhile, a horizontal ruler is installed in a tool pipe, when a jacking pipeline is consistent with the designed position, a laser point can be shot to the bubble center of the horizontal ruler, the jacking quality is not deviated, and otherwise, deviation correction is carried out according to the deviation amount;
secondly, reaming for the first time, jacking the reaming pipe joint after the guide pipe reaches the receiving pit, wherein the pipe diameter of the front section of the reaming pipe joint is the same as that of the guide pipe, the pipe diameter of the rear section of the reaming pipe joint is larger than that of the front section of the reaming pipe joint, and then, putting the pipe joint with the same pipe diameter as that of the rear section of the reaming pipe joint down to continue jacking until the reaming pipe joint reaches the receiving pit;
and thirdly, reaming for the second time, which is the same as the reaming method for the first time, wherein the pipe diameter of the front section of the reaming pipe joint used for reaming for the second time is the same as that of a pipe joint subsequently pushed in the first reaming, and the pipe diameter of the rear section is the same as that of a finished pipe, and then the finished pipe is pushed in until the finished pipe is completely pushed in.
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| CN112212072B (en) * | 2020-11-06 | 2022-06-03 | 中冶建工集团有限公司 | Detachable back support bracket system for pipe jacking construction |
| CN114198565B (en) * | 2021-12-10 | 2023-10-24 | 中铁十六局集团电气化工程有限公司 | Push pipe device for subway construction |
| CN114857354A (en) * | 2022-04-27 | 2022-08-05 | 中国铁建重工集团股份有限公司 | Push bench advancing device |
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| JP3377952B2 (en) * | 1998-11-06 | 2003-02-17 | 株式会社渡辺組 | Main pushing device |
| CN2447598Y (en) * | 2000-10-27 | 2001-09-12 | 余彬泉 | Multiple oil tank combined main-jacking device |
| CN2578638Y (en) * | 2002-10-24 | 2003-10-08 | 上海市机械施工公司 | Non-trenching plastic pipe jacking device |
| CN1202365C (en) * | 2003-03-06 | 2005-05-18 | 上海隧道工程股份有限公司 | Central screw type soil pressure balance miniature push bench |
| CN102032393B (en) * | 2010-11-10 | 2012-06-06 | 博大建设有限公司 | Small-bore long distance curved pipe jacking method |
| CN203023632U (en) * | 2013-01-14 | 2013-06-26 | 哈尔滨铁道职业技术学院 | Non-excavation sensing-type jacking pipe for bridge construction |
| CN104358927B (en) * | 2014-10-30 | 2016-05-11 | 国强建设集团有限公司 | A kind of pipe jacking construction method and conduit jacking |
| CN206429246U (en) * | 2017-01-25 | 2017-08-22 | 徐州徐工基础工程机械有限公司 | Full-automatic reverse pushes away main jacking device |
| CN208518670U (en) * | 2018-06-26 | 2019-02-19 | 扬州斯普森机械制造有限公司 | A kind of push-bench reverse ejection device |
| CN109577996B (en) * | 2019-01-04 | 2020-10-30 | 温州华庭建设有限公司 | Pipe jacking machine and trenchless pipe jacking construction method |
| CN209458477U (en) * | 2019-01-15 | 2019-10-01 | 何德明 | A kind of architectural engineering hydraulic push bench |
| CN110440052B (en) * | 2019-08-09 | 2021-02-09 | 上海矩顶工程科技有限公司 | Movable smooth jacking mechanism for pipe jacking construction |
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