CN114961735A - Pipe jacking working well supporting device and enclosure construction method thereof - Google Patents

Abstract

The application relates to a pipe-jacking working well supporting device and a surrounding construction method thereof, the supporting device comprises a central pile, a plurality of supporting piles, a connecting beam, a supporting template, a connecting piece and an adjusting mechanism, the central pile is vertically arranged at the center of the working well, a plurality of supporting piles are uniformly distributed on the peripheral side of the central pile, the central pile and the support piles have the same axial direction, the connecting beam is connected between the adjacent support piles and between the support pile and the central pile, the connecting piece is connected on the supporting pile in a sliding way, one end of the supporting template is hinged on the connecting piece, the other end of the supporting template is abutted against the side wall of the adjacent supporting pile, the adjusting mechanism is arranged on the central pile and can slide along the central pile, the adjusting mechanism is used for adjusting and fixing the supporting template, and a pouring cavity is formed among the supporting piles, the supporting template and the inner wall of the working well. This application has the effect that improves work well efficiency of construction.

Description

Pipe jacking working well supporting device and enclosure construction method thereof

Technical Field

The application relates to the technical field of working well construction, in particular to a pipe-jacking working well supporting device and a containment construction method thereof.

Background

In recent years, with the construction of municipal infrastructure, because some areas often meet sand layer geology, the designed main drainage pipeline is generally buried deeply, and the open excavation construction has the defects of high construction cost, high safety risk, influence on traffic and environment and the like. The trenchless construction technology has been gradually recognized and popularized in the construction of underground pipeline engineering with the advantages of little influence of construction on the environment, high construction speed and the like. Pipe-jacking construction is a main construction method for trenchless construction of modern urban underground pipeline engineering, and underground pipelines are laid in a working well enclosure structure in a mode of manual pipe jacking or mechanical pipe jacking. The pipe-jacking working well is used as a temporary enclosure structure for pipe-jacking construction operation, and has to achieve the effects of safety, stability and reliability so as to ensure the safety of pipe-jacking construction operation and surrounding environment. At present, a reinforced concrete inverted-wall reverse-construction foundation pit supporting type is often adopted for a pipe-jacking construction working well enclosure structure with the municipal underground pipeline buried depth within 10.0 m.

At present, when a working well is operated, after the working well is excavated, concrete needs to be poured from top to bottom to form an enclosure structure, when the enclosure structure is poured, a full hall frame is built in the working well to support and fix a pouring template, then a pouring cavity is formed by the built template to pour and mold the enclosure structure, and then the working procedures of excavation, template support, concrete pouring and the like are carried out.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: when supporting the template through full hall frame, after the envelope to the upper strata is pour the shaping, excavate the back again, need to demolish full hall frame and template and continue to build the template and strut and pour, construction cycle is longer, and the safe risk is bigger.

Disclosure of Invention

In order to improve the construction efficiency of a working well, the application provides a pipe-jacking working well supporting device and a containment construction method thereof.

In a first aspect, the application provides a pipe-jacking working well supporting device, which adopts the following technical scheme:

the utility model provides a push pipe working well supporting device, includes central stake, a plurality of support stake, tie-beam, supporting template, connecting piece and adjustment mechanism, the vertical working well center of locating of central stake, it is a plurality of support stake evenly distributed is in the week side of central stake, central stake with the axial of supporting the stake is the same, the tie-beam is connected in adjacent support between the stake and support stake and central stake, connecting piece sliding connection in support on the stake, supporting template one end articulated with on the connecting piece, the other end and adjacent support stake lateral wall butt, adjustment mechanism locates on the central stake, adjustment mechanism can follow the central stake slides, adjustment mechanism is used for adjusting the supporting template fixedly, forms between a plurality of support stakes and supporting template and working well inner wall and pours the chamber.

Through adopting above-mentioned technical scheme, when being under construction to the working well, the supporting template through setting up passes through the connecting piece and connects on the supporting pile, form through supporting pile and supporting template cooperation and pour the chamber and be used for pouring concrete enclosure, in the successive layer work progress of working well, after upper construction completion, accessible adjustment mechanism orders about the supporting template drawing of patterns, with supporting template and adjustment mechanism downward slip to lower floor, can be under construction to the next floor of working well, the efficiency of construction of strutting of working well has been improved greatly.

Optionally, the connecting piece includes slider and gim peg, the support stake lateral wall is equipped with the shifting chute along length direction, slider sliding connection in the shifting chute, the support template is articulated with the slider, the gim peg is located be used for fixing the slider on the slider.

Through adopting above-mentioned technical scheme, accomplish the back with upper working well construction, with the back of lower floor's working well excavation completion, with the back of supporting the template drawing of patterns, through making the slider slide in the shifting chute, can drive the supporting template and remove, with the supporting template removal to the back of lower floor, the rethread gim peg carries out the construction of lower floor's working well after fixing the slider, further improves the efficiency of construction that the working well was strutted.

Optionally, the supporting pile is provided with an anti-blocking strip, the anti-blocking strip is arranged along the length direction of the supporting pile, the anti-blocking strip is located on one side, close to the inner wall of the working well, of the moving groove, and the anti-blocking strip is abutted to the side wall of the supporting template.

Through adopting above-mentioned technical scheme, through preventing stifled strip by setting up on the support stake, carry out the shutoff through preventing stifled strip to the junction between supporting die plate and the slider, avoid pouring the in-process, the concrete carries out the drawing of patterns that influences supporting die plate behind the junction.

Optionally, adjustment mechanism includes a support section of thick bamboo, driving piece, two spliced poles and two support connecting rods, a support section of thick bamboo cover is located can follow on the central stake is slided, support connecting rod articulates in two between the spliced pole, support connecting rod middle part is articulated, the driving piece is used for ordering about two the middle part of support connecting rod is in opposite directions or the motion dorsad, one the spliced pole rotates with the support template to be connected, another the spliced pole rotates with a support section of thick bamboo lateral wall to be connected, the axial of spliced pole with the axial of central stake is the same.

Through adopting above-mentioned technical scheme, when strutting the working well, when fixing the supporting template, order about the middle part of two support connecting rods through the driving piece and move in opposite directions or to the back, can realize the distance adjustment between two spliced poles, when two spliced poles are close to, can drive the supporting template and overturn around self articulated shaft, when the supporting template overturns to with adjacent supporting pile butt, can form with supporting pile cooperation and pour the chamber, can accomplish the drawing of patterns effect after the supporting template overturns and breaks away from with supporting the pile, make the adjustment of supporting template fixed more convenient.

Optionally, the driving piece includes a screw rod, a thread cylinder and a driving rod, the screw rod is respectively arranged on two articulated shafts at the middle part of the supporting connecting rod, the screw rod stretches into two ends of the thread cylinder and is in threaded connection with the thread cylinder, and the driving rod is arranged on the side wall of the thread cylinder.

Through adopting above-mentioned technical scheme, when adjusting fixedly to the support template, order about a screw thread section of thick bamboo through the actuating lever and rotate, because a screw thread section of thick bamboo and screw rod threaded connection order about the screw rod in a screw thread section of thick bamboo pivoted in opposite directions or back motion, and then order about the middle part of supporting the connecting rod and move in opposite directions or back motion, can realize the fixed effect of adjustment to the support template.

Optionally, one side of the support pile, which is abutted against the support template, is provided with a closed groove, the closed groove is arranged along the length direction of the support pile, and the end part of the support template extends into the closed groove.

By adopting the technical scheme, the sealing groove is arranged, so that the supporting template is fixed after extending into the sealing groove when being fixed, the airtightness between the supporting template and the supporting pile is further improved, and slurry leakage in the pouring process is avoided.

Optionally, the supporting pile is connected with an arc plate in a sliding mode, one side of the arc plate is connected with the sliding block, and a reinforcing beam is horizontally arranged between the arc plate and the supporting cylinder.

Through adopting above-mentioned technical scheme, through arc and the reinforcing beam that sets up, when being under construction to the working well, further support fixedly through the reinforcing beam to center pile and support between the pile, improve the stability of supporting pile and center pile to can make and reciprocate in step between slider and the support section of thick bamboo.

Optionally, the central pile is prism-shaped, and the support cylinder is matched with the central pile.

Through adopting above-mentioned technical scheme, the center stake that sets up is the prism form, and through supporting a section of thick bamboo and center stake cooperation, the in-process that supports through a support section of thick bamboo can avoid taking place between a support section of thick bamboo and the center stake relatively rotating and influence the stability of device to be convenient for install fixedly the device.

In a second aspect, the application provides a pipe jacking working well enclosure construction method, which adopts the following technical scheme:

a support construction method of a pipe-jacking working well comprises the following steps:

s1: excavating a first layer of working well according to a drawing, driving a support pile and a central pile into the working well, and fixing the support pile and the central pile through a connecting beam;

s2: connecting the connecting piece to the supporting piles, installing the adjusting mechanism on the central pile, and driving the supporting template to rotate through the adjusting mechanism so that one end of the supporting template, which is far away from the connecting piece, is tightly abutted against the adjacent supporting piles;

s3: pouring in a pouring cavity formed by the support template, the support pile and the inner wall of the working well to form enclosure;

s4: after the first floor working well is accomplished, continue to excavate the second floor working well, order about the support template upset drawing of patterns through adjustment mechanism, through with connecting piece and adjustment mechanism move down to the second floor working well, will support the template again and strut and pour after fixed, the construction downwards in proper order can accomplish the enclosure construction of whole working well.

By adopting the technical scheme and the construction method, the working well is constructed from top to bottom in sequence, the construction process is simple, the operation is convenient, the supporting device can be used for supporting in the working well excavation process, the protection effect is achieved, and the safety is high when workers perform excavation construction in the working well.

Optionally, when the support piles and the center pile are installed in S1, the support piles and the center pile extend out of the top of the working well.

Through adopting above-mentioned technical scheme, stretch out the working well top through setting up support pile and central stake, when being under construction to the working well first floor, can install the support template and can play the guard action earlier to the working well in the working well upper portion, further improve the security of construction.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the supporting device comprises a central pile, a plurality of supporting piles, a connecting beam, a supporting template, a connecting piece and an adjusting mechanism, the supporting template can be driven to be demoulded through the adjusting mechanism in the layer-by-layer construction process of the working well, the supporting template and the adjusting mechanism slide downwards to the lower layer, the construction can be carried out on the lower layer of the working well, and the supporting construction efficiency of the working well is greatly improved;

2. the adjusting mechanism comprises a supporting cylinder, a driving part, two connecting columns and two supporting connecting rods, and the driving part drives the middle parts of the two supporting connecting rods to move in opposite directions or back directions, so that the distance between the two connecting columns can be adjusted, and the supporting template can be adjusted and fixed more conveniently;

3. the construction method is used for constructing the working well from top to bottom, the process is simple, the operation is convenient, the construction efficiency is high, and the safety is high when workers excavate and construct the working well.

Drawings

Fig. 1 is a schematic structural diagram of a pipe-jacking working well supporting device according to an embodiment of the application.

Fig. 2 is an enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a perspective cross-sectional view of a pipe-jacking working well support device according to an embodiment of the present application.

Reference numerals: 1. a central pile; 11. an anti-blocking strip; 2. supporting piles; 21. a moving groove; 22. closing the groove; 3. a connecting beam; 4. supporting the template; 5. a connecting member; 51. a slider; 52. a fixing bolt; 53. an arc-shaped plate; 6. an adjustment mechanism; 61. a support cylinder; 62. a drive member; 621. a screw; 622. a threaded barrel; 623. a drive rod; 63. connecting columns; 64. a support link; 7. reinforcing the beam; 8. and (4) working wells.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a pipe jacking working well supporting device. Referring to fig. 1 and 2, the supporting device includes a central pile 1, a plurality of supporting piles 2, a connecting beam 3, a supporting template 4, a connecting member 5 and an adjusting mechanism 6, the central pile 1 and the supporting piles 2 are both vertically inserted into a working well 8, the central pile 1 is located at the center of the working well 8, the working well 8 can be a regular quadrangle, a regular pentagon, a regular hexagon and the like, the shape of the working well 8 is determined according to construction requirements, the working well 8 is of a regular hexagon structure, the plurality of supporting piles 2 are uniformly distributed on the periphery of the central pile 1, the number of the supporting piles 2 is six in the embodiment, and the quantity of the supporting piles 2 is determined according to the shape of the working well 8 and is respectively positioned at the corners of the working well 8, the axial directions of the central piles 1 and the supporting piles 2 are the same, the connecting beam 3 is connected between the adjacent supporting piles 2 and between the supporting piles 2 and the central pile 1, and the end parts of the connecting beam 3, the central piles 1 and the supporting piles 2 are fixed through bolts.

Referring to fig. 1 and 2, the connecting member 5 is slidably connected to the supporting pile 2, one end of the supporting template 4 is hinged to the connecting member 5, a hinge shaft of the supporting template 4 is the same as the axial direction of the supporting pile 2, the other end of the supporting template is abutted to the side wall of the adjacent supporting pile 2, a closed groove 22 is formed in one side of the supporting pile 2 abutted to the supporting template 4, the closed groove 22 is arranged along the length direction of the supporting pile 2, and the end of the supporting template 4 extends into the closed groove 22. The connecting piece 5 includes slider 51 and gim peg 52, the shifting chute 21 has been seted up along length direction to the support stake 2 lateral wall, the cross section T shape structure of shifting chute 21, slider 51 sliding connection is in shifting chute 21, slider 51 cooperatees with shifting chute 21, it is articulated with slider 51 to support template 4, gim peg 52 sets up and is used for fixing slider 51 on slider 51, gim peg 52 passes slider 51 and slider 51 threaded connection, and gim peg 52 is located the one end in shifting chute 21 and supports tightly in support stake 2. Support stake 2 is last an organic whole to be connected with prevents stifled strip 11, prevents stifled strip 11 along 2 length direction settings of support stake, and prevents that stifled strip 11 is located the one side that the shifting chute 21 is close to 8 inner walls of working well, prevents stifled strip 11 and 4 lateral walls butts of supporting die plate, prevents that stifled strip 11 carries out the shutoff to the junction between supporting die plate 4 and the slider 51, avoids pouring the in-process, and the concrete influences the drawing of patterns of supporting die plate 4 after carrying out the junction. A pouring cavity is formed between the supporting piles 2 and the supporting templates 4 and the inner wall of the working well 8, and concrete is poured in the pouring cavity to form an inner enclosure structure of the working well 8.

Referring to fig. 1 and 3, the adjusting mechanism 6 is disposed on the central pile 1, the adjusting mechanism 6 can slide along the central pile 1, the adjusting mechanism 6 is used for adjusting and fixing the supporting template 4, the adjusting mechanism 6 includes a supporting cylinder 61, a driving member 62, two connecting columns 63 and two supporting connecting rods 64, the supporting cylinder 61 is sleeved on the central pile 1 and can slide along the central pile 1, the central pile 1 is prism-shaped, the central pile 1 can be quadrangular, pentagonal and hexagonal, the shape of the central pile 1 can be adjusted according to the shape of the working well 8, in this embodiment, the central pile 1 is hexagonal, the supporting cylinder 61 is matched with the central pile 1, and it is avoided that the supporting cylinder 61 and the central pile 1 rotate relatively to affect the stability of the device. One connecting column 63 is rotatably connected with the supporting template 4 and is positioned at one end, far away from the connecting piece 5, of the supporting template 4, the other connecting column 63 is rotatably connected with the side wall of the supporting barrel 61, the axial direction of the connecting column 63 is the same as that of the central pile 1, the supporting connecting rod 64 is hinged between the two connecting columns 63, the axial direction of hinged shafts at the two ends of the supporting connecting rod 64 is horizontal, the middle part of the supporting connecting rod 64 is hinged, and the axial direction of the hinged shafts at the middle part of the supporting connecting rod 64 is the same as that of the hinged shafts at the two ends. Support and to go up sliding connection on stake 2 and have arc 53, arc 53 one side and slider 51 body coupling, arc 53 is located and supports stake 2 and keeps away from one side of 8 inner walls of working well, and arc 53 and support between a section of thick bamboo 61 lateral wall horizontally connect have reinforcing beam 7, and the both ends of reinforcing beam 7 are all through the bolt fastening, further support fixedly through reinforcing beam 7 to going between center pile 1 and the support stake 2, improve the stability of supporting stake 2 and center pile 1.

Referring to fig. 1 and 3, the driving member 62 is used for driving the middle portions of the two support links 64 to move toward each other or back, the driving member 62 includes a screw 621, a threaded cylinder 622, and a driving rod 623, the screw 621 is respectively and integrally connected to a hinge shaft at the middle portions of the two support links 64, an axial direction of the screw 621 is perpendicular to an axial direction of the hinge shaft at the middle portion of the support links 64, the screw 621 extends into two ends of the threaded cylinder 622 and is in threaded connection with the threaded cylinder 622, the driving rod 623 is integrally connected to a side wall of the threaded cylinder 622, the threaded cylinder 622 is driven to rotate by the driving rod 623, and due to the threaded connection between the threaded cylinder 622 and the screw 621, the screw 621 is driven to move toward each other or back in the threaded cylinder 622 during rotation of the threaded cylinder 622, and further drives the middle portions of the support links 64 to move toward each other or back.

The implementation principle of the pipe jacking working well supporting device in the embodiment of the application is as follows: when the enclosure construction is carried out on the working well 8, firstly, the central pile 1 and the supporting pile 2 are driven into the working well 8, after the first layer of working well 8 is excavated, the supporting template 4, the adjusting mechanism 6, the connecting beam 3 and the like are installed, so that the supporting template 4, the supporting beam and the inner wall of the working well 8 enclose a casting cavity, concrete is cast in the casting cavity to form an enclosure structure of the working well 8, after the enclosure construction of the upper layer is formed, the working well 8 is excavated to the lower layer, after the excavation of the lower layer is completed, the threaded cylinder 622 is driven to rotate through the driving rod 623, as the threaded cylinder 622 is in threaded connection with the threaded cylinder 621, the threaded cylinder 621 is driven to move in the opposite direction in the rotating process of the threaded cylinder 622, the middle parts of the supporting connecting rods 64 are driven to move in the opposite direction, the two connecting columns 63 are driven to approach each other, the supporting template 4 is driven to rotate, so that the concrete poured by the supporting template 4 is separated, after the supporting cylinder 61 and the sliding block 51 are moved downwards to the lower-layer working well 8, the supporting template 4 is rotated to be tightly abutted to the supporting pile 2, the lower-layer enclosure pouring work is carried out, the construction of the whole working well 8 enclosure can be completed by repeating the construction, and the construction efficiency is effectively improved.

The embodiment of the application also discloses a support construction method of the pipe-jacking working well, and with reference to fig. 1 and 3, the pipe-jacking working well support device comprises the following steps:

s1: excavating a first layer of working well 8 according to a drawing, wherein the working well 8 is in a regular hexagon shape, then driving a support pile 2 and a central pile 1 into the working well 8, extending the support pile 2 and the central pile 1 out of the top of the working well 8, and sequentially fixing the support pile 2 and the central pile 1 through a connecting beam 3;

s2: connecting the connecting piece 5 to the supporting piles 2 in sequence, installing the adjusting mechanism 6 on the central pile 1, driving the supporting template 4 to rotate through the adjusting mechanism 6 so that one end of the supporting template 4 far away from the connecting piece 5 abuts against the adjacent supporting pile 2 tightly, and enabling the end part of the supporting template 4 to extend into the closed groove 22;

s3: installing a reinforcement cage in a pouring cavity formed by the support template 4, the support pile 2 and the inner wall of the working well 8, and pouring and forming to form an enclosure structure;

s4: after the enclosure forming of the first layer of working well 8 is solidified, the second layer of working well 8 is continuously excavated, after the excavation of the second layer of working well 8 is completed, the supporting template 4 is driven to turn over through the adjusting mechanism 6 so as to be separated from concrete, then the connecting piece 5 and the adjusting mechanism 6 are downwards moved to the second layer of working well 8, the supporting template 4 and the supporting pile 2 are supported and fixed through the adjusting mechanism 6 and then poured, and the enclosure construction of the whole working well 8 can be completed after the downward construction is performed in sequence.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides a push pipe working well support device which characterized in that: comprises a central pile (1), a plurality of supporting piles (2), a connecting beam (3), a supporting template (4), a connecting piece (5) and an adjusting mechanism (6), wherein the central pile (1) is vertically arranged at the center of a working well (8), the supporting piles (2) are uniformly distributed on the peripheral sides of the central pile (1), the central pile (1) is the same as the supporting pile (2) in axial direction, the connecting beam (3) is connected between adjacent supporting piles (2) and between the supporting piles (2) and the central pile (1), the connecting piece (5) is connected on the supporting pile (2) in a sliding way, one end of the supporting template (4) is hinged with the connecting piece (5), the other end of the supporting pile (2) is abutted against the side wall of the supporting pile (2), the adjusting mechanism (6) is arranged on the central pile (1), and the adjusting mechanism (6) can slide along the central pile (1), the adjusting mechanism (6) is used for adjusting and fixing the supporting template (4), and a pouring cavity is formed among the supporting piles (2), the supporting template (4) and the inner wall of the working well (8).

2. A push bench working well support device according to claim 1, characterised in that: the connecting piece (5) comprises a sliding block (51) and a fixing bolt (52), a moving groove (21) is formed in the side wall of the supporting pile (2) along the length direction, the sliding block (51) is connected in the moving groove (21) in a sliding mode, the supporting template (4) is hinged to the sliding block (51), and the fixing bolt (52) is arranged on the sliding block (51) and used for fixing the sliding block (51).

3. A push bench working well support device according to claim 2, characterised in that: be equipped with on support pile (2) and prevent stifled strip (11), prevent stifled strip (11) and follow support pile (2) length direction sets up, prevent stifled strip (11) and be located removal groove (21) are close to one side of working well (8) inner wall, prevent stifled strip (11) and support template (4) lateral wall butt.

4. A push bench working well support device according to claim 2, characterised in that: adjustment mechanism (6) are including a support section of thick bamboo (61), driving piece (62), two spliced poles (63) and two support connecting rod (64), a support section of thick bamboo (61) cover is located can follow on the central stake (1) slides, support connecting rod (64) articulate in two between spliced pole (63), support connecting rod (64) middle part is articulated, driving piece (62) are used for ordering about two the middle part of support connecting rod (64) is in opposite directions or back-to-back motion, one spliced pole (63) rotates with supporting template (4) to be connected, another spliced pole (63) rotates with a support section of thick bamboo (61) lateral wall to be connected, the axial of spliced pole (63) with the axial of central stake (1) is the same.

5. A pipe jacking working well support device according to claim 4, wherein: the driving piece (62) comprises a screw rod (621), a thread cylinder (622) and a driving rod (623), the screw rod (621) is respectively arranged on the hinging shaft at the middle part of the supporting connecting rod (64), the screw rod (621) stretches into the two ends of the thread cylinder (622) and is in threaded connection with the thread cylinder (622), and the driving rod (623) is arranged on the side wall of the thread cylinder (622).

6. A push bench working well support device according to claim 1, characterised in that: one side of the support pile (2) abutted against the support template (4) is provided with a closed groove (22), the closed groove (22) is arranged along the length direction of the support pile (2), and the end part of the support template (4) extends into the closed groove (22).

7. A pipe jacking working well support device according to claim 4, wherein: support stake (2) go up sliding connection and have arc (53), arc (53) one side with slider (51) are connected, arc (53) with the level is equipped with reinforcing beam (7) between a support section of thick bamboo (61).

8. A pipe jacking working well support device according to claim 4, wherein: the central pile (1) is prism-shaped, and the supporting cylinder (61) is matched with the central pile (1).

9. A support construction method of a pipe-jacking working well is characterized by comprising the following steps: use of a pipe-jacking working well (8) support according to any one of claims 1 to 8, comprising the steps of:

s1: excavating a first layer of working well (8) according to a drawing, driving a support pile (2) and a central pile (1) into the working well (8), and fixing the support pile (2) and the central pile (1) through a connecting beam (3);

s2: connecting the connecting piece (5) to the supporting piles (2), installing the adjusting mechanism (6) on the central pile (1), and driving the supporting template (4) to rotate through the adjusting mechanism (6) so that one end of the supporting template, which is far away from the connecting piece (5), is tightly abutted against the adjacent supporting piles (2);

s3: pouring in a pouring cavity formed by the supporting template (4), the supporting pile (2) and the inner wall of the working well (8) to form enclosure;

s4: after first floor working well (8) are accomplished, continue to excavate second floor working well (8), order about supporting template (4) upset drawing of patterns through adjustment mechanism (6), through with connecting piece (5) and adjustment mechanism (6) downwardly moving to second floor working well (8), pour supporting template (4) after strutting fixedly again, construct downwards in proper order, can accomplish the enclosure construction of whole working well (8).

10. A pipe jacking working well space enclosing construction method according to claim 9, wherein: and S1, when the support pile (2) and the center pile (1) are installed, the support pile (2) and the center pile (1) extend out of the top of the working well (8).

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