CN113152631A

CN113152631A - Construction method of water supply and drainage pipeline

Info

Publication number: CN113152631A
Application number: CN202110314845.8A
Authority: CN
Inventors: 王�华; 王璐晨; 王艳军; 文飞; 毛鹏程
Original assignee: Hubei Provincial Road & Bridge Co ltd
Current assignee: Hubei Provincial Road & Bridge Co ltd
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2021-07-23

Abstract

The invention relates to a construction method of a water supply and drainage pipeline, which comprises the following steps: 1) construction preparation: surveying and determining the laying position of the horizontal water conveying pipe; 2) laying a water conveying transverse pipe: firstly, uniformly distributing prefabricated pipe seats at intervals along the length direction of a pipeline distribution groove; 3) constructing a cast-in-place pipe seat and a pipe groove filling body; 4) building blocks around the well and constructing a mortar layer of the shaft; 5) constructing a cast-in-place section of the shaft; 6) constructing a filling body around the well; 7) arranging a support bedplate and a connecting rib plate; 8) and (4) well cover plate arrangement. The invention has the beneficial effects that: the arrangement precision of the water delivery transverse pipe is improved; the stability of the longitudinal support of the horizontal water conveying pipe is effectively improved; the flatness and the construction efficiency of a mortar layer of the shaft are effectively improved; the rapid disassembly and assembly of the shaft internal mold are realized, and the difficulty of pouring construction of a cast-in-place section of the shaft is reduced; the bearing capacity of the soil mass around the well at the lower part of the well cover plate is effectively improved; the effect that satisfies well lid board load sharing is connected to the well lid floorbar, can effectively reduce the concentrated stress at the position that well lid board and well lid supporter meet.

Description

Construction method of water supply and drainage pipeline

Technical Field

The invention relates to a construction method of a water supply and drainage pipeline, which can improve the arrangement quality of a horizontal water delivery pipe, reduce the construction difficulty of a shaft mortar layer and a cast-in-place shaft section and improve the stress performance of a well cover plate, and is suitable for pipeline installation engineering.

Background

The water supply and drainage pipeline generally refers to a pipe for a domestic cold and hot water system, and the range of the pipe comprises a central air-conditioning system, a floor heating system and a domestic drinking water system. With the rapid development of social economy, the process of urbanization construction is accelerated continuously, and a plurality of buildings begin to be installed with water supply and drainage pipelines in succession. Then, water supply and drainage pipeline and construction technology have obtained extensive application and development, nevertheless are restricted by personnel's operation and construction environment, still exist in the work progress water delivery horizontal pipe and lay quality low, well lid board atress performance subalternation problem.

In the prior art, a water supply and drainage pipeline and a construction method are provided, which are characterized in that: including unable adjustment base, unable adjustment base top fixedly connected with overlap joint piece, unable adjustment base top fixedly connected with supporting shoe, the supporting shoe is provided with two, and two adjacent inside equal sliding connection in one side of supporting shoe have the driven lever, and the driven lever is provided with many, and the equal fixedly connected with side elastic block of one end of supporting shoe is kept away from to many driven levers. The technology introduces a pressure sensor structure into the water supply and drainage pipeline, can align the water supply and drainage pipeline to a certain degree conveniently, but is difficult to synchronously improve the arrangement quality of the water delivery transverse pipe and the stress performance of the well cover plate.

In view of this, in order to improve the construction quality and efficiency of the water supply and drainage pipeline structure, the invention provides a construction method of the water supply and drainage pipeline, which can improve the arrangement quality of the horizontal water conveying pipe, reduce the construction difficulty of the shaft mortar layer and the cast-in-place shaft section, and improve the stress performance of the shaft cover plate.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a construction method of a water supply and drainage pipeline, which can improve the arrangement quality of a water conveying transverse pipe, reduce the construction difficulty of a shaft mortar layer and a cast-in-place shaft section and improve the stress performance of a shaft cover plate.

The construction method of the water supply and drainage pipeline comprises the following steps:

1) construction preparation: surveying to determine the laying position of the horizontal water conveying pipe, digging a pipeline laying groove and an inspection well shaft, and preparing materials and devices required by construction;

2) laying a water conveying transverse pipe: firstly, uniformly distributing prefabricated pipe seats at intervals along the length direction of a pipeline distribution groove, and then hanging a water delivery transverse pipe on the prefabricated pipe seats; respectively laying a groove top slide rail on the top surface of the soil body around the pipe on two sides of the pipeline laying groove, and arranging a sliding support beam and a support arc plate between the groove top slide rails with opposite mirror images; the groove pressing plate is firmly connected with the side wall of the pipeline laying groove by fastening the position control bolt; the lower surface of the supporting arc plate is connected with the rigid hanging plate through the pipeline control body; after the pipeline sling passes through the bottom of the horizontal water conveying pipe, the pipeline sling is firmly connected with sling connecting plates at two ends of the rigid hanging plate; the longitudinal gradient of the horizontal water conveying pipe is corrected through the pipeline control body, and then grouting is performed to the gap between the prefabricated pipe seat and the horizontal water conveying pipe through the horizontal grouting pipe in the prefabricated pipe seat to form a pipe seat sealing body;

3) construction of a cast-in-place pipe seat and a pipe groove filling body: arranging a template support between the longitudinally adjacent prefabricated pipe seats, and firmly connecting the template support with the soil body around the pipe through support anchor bars; two sides of the horizontal water conveying pipe are respectively provided with a pipeline side die, and the pipeline side dies are supported by side pressure bolts and template pressing plates, so that a connecting sealing layer at the tops of the pipeline side dies is tightly attached and connected with the horizontal water conveying pipe; firstly, filling a pipe groove filler into gaps between a horizontal water conveying pipe and a pipeline arrangement groove by adopting external filling equipment to stabilize the horizontal water conveying pipe, then removing the restraint of a pipeline control body and a rigid hanging plate on the horizontal water conveying pipe, and then performing pipe groove filler construction in the rest area;

4) building blocks around the well and constructing a shaft mortar layer: building blocks around the well sequentially from bottom to top above a water conveying horizontal pipe at the inspection well part, and arranging bottom positioning ribs at the tops of the blocks around the well; a suspender support beam is arranged at the top of the soil body around the well, so that a supporting plate suspender penetrates through a suspender sleeve on the suspender support beam, a suspender hoop is arranged at the top end of the supporting plate suspender, a hoop side ear plate is arranged on the suspender hoop, the lower surface of the hoop side ear plate is connected with a suspender control body on the suspender support beam, and a suspension supporting plate is arranged at the bottom end of the supporting plate suspender; grouting through a grouting pump body on the suspension supporting plate and a gap between a grouting supporting die and well surrounding building blocks at the end part of the horizontal grouting supply pipe towards the suspension supporting plate, and controlling the compactness of mortar through a mortar control sealing cover at the top of the grouting supporting die to form a shaft mortar layer; the vertical positions of the supporting plate suspender and the mud jacking supporting die are adjusted through the suspender position control body;

5) construction of a cast-in-place section of a shaft: firstly, firmly connecting an disassembly-free outer mold and a shaft steel reinforcement cage through outer mold positioning ribs, and then firmly connecting a positioning transverse rib at the bottom of the shaft steel reinforcement cage with a bottom positioning rib, so that the positioning transverse rib at the top of the shaft steel reinforcement cage is firmly connected with a strut hanging beam at the top of a soil body around a well through a top connecting rib; inserting the inner mold control body, the cross-brace bag and the shaft inner mold into a shaft of the inspection well through the position control inner pipe; firstly, respectively applying transverse jacking force to a first inner die and a second inner die through a first position control body and a second position control body in sequence, connecting the first inner die and the second inner die through an inner die connecting plate, applying transverse jacking force to a cross-brace bag through a bag pressurization pipe to firmly connect the bottom of the shaft inner die with the surrounding building blocks of the shaft, and then adopting concrete pouring equipment to carry out shaft cast-in-place section pouring construction;

6) construction of a filling body around the well: after the cast-in-place section of the shaft forms strength, performing construction of a filling body around the shaft at the cast-in-place section of the shaft;

7) arranging a supporting bedplate and a connecting rib plate: implanting a stiff anchor bar into a leading hole in a soil body around a well from the top surface of the filling body around the well, and excavating a groove and pressing slurry to form a supporting bedplate; inserting a connecting rib plate into the hole of the soil body around the well from the empty face of the soil body around the well above the supporting bedplate;

8) well cover plate layout: welding a well lid bottom beam on the lower surface of the well lid plate, arranging a well lid connecting rib between the well lid plate and the well lid bottom beam, and placing the bedplate connecting plates at two ends of the well lid bottom beam on the supporting bedplate; pouring concrete to the top of the cast-in-place section of the shaft by adopting external pouring equipment to form a well cover supporting body; a well lid sealing ring is arranged in the gap between the well lid plate and the soil body around the well.

Preferably, the method comprises the following steps: step 2) the prefabricated pipe seat is made of reinforced concrete materials, the upper surface of the prefabricated pipe seat is provided with a pipeline connecting groove connected with a horizontal water conveying pipe, a horizontal grouting pipe with an L-shaped cross section is arranged in the prefabricated pipe seat, and the top end of the horizontal grouting pipe extends out of the top surface of the pipeline connecting groove; the groove top sliding rail is formed by rolling a steel plate and is laid in parallel to the pipeline laying groove, and a sliding channel which is provided with an inverted T-shaped cross section and is connected with the sliding connector is arranged on the groove top sliding rail; the sliding support beam is formed by rolling profile steel or steel plates, and the lower surface of the sliding support beam is connected with the support arc plate through the support hanging column; the sliding connector is formed by rolling a steel plate, and the cross section of the sliding connector is in an inverted T shape; the supporting arc plate is formed by rolling a steel plate, the cross section of the supporting arc plate is arc-shaped, and two ends of the supporting arc plate are provided with groove connectors; the groove connecting body comprises a positioning pressing plate and a groove pressing plate, the positioning pressing plate is connected with the supporting arc plate in a welding mode, and the positioning pressing plate is connected with the groove pressing plate through a position control bolt; the position control bolt is formed by rolling a screw rod, the position control bolt is in contact connection with the surface of the groove pressing plate, and the position control bolt is in threaded connection with the positioning pressing plate.

Preferably, the method comprises the following steps: step 3) the template support is formed by rolling a steel plate, the cross section of the template support is in an inverted T shape, a hole connected with a support anchor bar is formed in a bottom transverse plate of the template support, and a thread connected with a side pressure bolt is arranged on a vertical plate of the template support; the pipeline side die is formed by rolling an alloy plate and comprises a side die vertical plate and a side die connecting plate, the side die connecting plate and the side die vertical plate are vertically welded or integrally rolled, and the upper surface of the side die connecting plate is provided with a curved surface connected with a water conveying horizontal pipe; the top surface of the side-form vertical plate is adhered with a connecting sealing layer, the side surface of the side-form vertical plate is provided with a pouring preset pipe and a pouring observation pipe, an external pouring device is adopted to pour the pouring preset pipe to form a cast-in-place pipe base, and the outer side wall of the side-form vertical plate is provided with a pressing plate limiting groove; the pressing plate limiting groove is made of steel plates and fixed on the outer side wall of the side mold vertical plate through a stud, the plane is in a circular ring shape, and the template pressing plate is matched with the pressing plate limiting groove.

Preferably, the method comprises the following steps: step 4), the suspender support beam is formed by rolling profile steel, a suspender sleeve which is superposed with the shaft axis of the inspection well is arranged in the middle of the suspender support beam, and a suspender control body is arranged on the suspender support beam; the hanger rod position control body adopts a hydraulic jack; the suspension supporting plate is formed by rolling a steel plate, the upper surface of the suspension supporting plate is provided with a mud jacking pump body, the end part of the suspension supporting plate is provided with a mud jacking supporting die along the annular direction, and a reinforcing supporting rib is arranged between the mud jacking supporting die and the suspension supporting plate; the horizontal slurry supply pipes are made of steel pipes, one ends of the horizontal slurry supply pipes are inserted into the inner surface of the grouting supporting die, the other ends of the horizontal slurry supply pipes are communicated with the slurry supply ring pipes, and the horizontal slurry supply pipes are uniformly distributed at intervals in the circumferential direction on the periphery of the slurry supply ring pipes; the slurry supply ring pipe is communicated with the slurry supply transverse pipe and is connected with the slurry pressing pump body through a connecting pipeline; the mud jacking and supporting die is formed by rolling an alloy plate, and the top end of the mud jacking and supporting die is connected with the mud control sealing cover in a sticking way; the slurry control sealing cover is cut into a ring shape by adopting a rubber sheet.

Preferably, the method comprises the following steps: step 5) the internal model position control body comprises a first position control body and a second position control body which are both hydraulic jacks, one end of each hydraulic jack is connected with the position control inner pipe in a welding mode, and the other end of each hydraulic jack is connected with the shaft internal model through a position control body end hinge; the shaft inner die comprises two first inner dies and two second inner dies which are enclosed to form a round table shape, and the first inner dies and the second inner dies are respectively hinged with the first position control bodies and the second position control bodies through the position control body ends; the position control inner pipe is formed by rolling a steel pipe, the top end of the position control inner pipe is vertically welded with the strut hanging beam, the bottom end of the position control inner pipe is connected with the bag supporting plate through a supporting plate connecting rod, and 2-3 inner die control bodies are arranged along the height direction of the position control inner pipe; the supporting plate of the bag is formed by rolling a steel plate, one side of the supporting plate is welded with the connecting rod of the supporting plate, and the other side of the supporting plate is stuck with the cross-bracing bag; the cross-bracing bag is in a closed ring shape by sewing rubber sheets and is communicated with an external pressure pipe through a bag pressure pipe; the strut hanging beam is formed by rolling steel plates and profile steel, a cavity for the top connecting rib to penetrate is formed in the strut hanging beam, and a strut weight body is arranged on the upper portion of the strut hanging beam.

Preferably, the method comprises the following steps: step 7), the connecting rib plate is formed by rolling a steel plate or a twisted steel bar; the stiff anchor bars are formed by rolling steel pipes, and the extending sections are anchored in the supporting bedplate; the support bedplate is made of reinforced concrete materials.

Preferably, the method comprises the following steps: step 8), the bottom beam of the well cover is formed by rolling profile steel, the cross section of the bottom beam is in an arc shape, and two ends of the bottom beam are welded with bedplate connecting plates; the cross section of the bedplate connecting plate is L-shaped and is formed by rolling a steel plate; the well lid support body is made of concrete materials, a formwork is poured, and the inner side surface of the well lid support body is flush with the inner side surface of the cast-in-place section of the shaft; the well lid sealing ring is made of rubber sheets or asphalt mixture or self-compacting concrete.

The invention has the beneficial effects that:

(1) the invention arranges the sliding supporting beam and the supporting arc plate between the groove top sliding rails opposite to each other in a mirror image manner, and the groove pressing plate is connected with the pipeline laying groove, so that the longitudinal gradient of the horizontal water conveying pipe is corrected through the pipeline sling and the pipeline control body, and the laying precision of the horizontal water conveying pipe is improved.

(2) The prefabricated pipe seats and the cast-in-place pipe seats are arranged at intervals along the length direction of the horizontal water conveying pipe, and grouting can be performed to the clearance between the prefabricated pipe seats and the horizontal water conveying pipe through the horizontal grouting pipe to form a pipe seat sealing body, so that the stability of longitudinal support of the horizontal water conveying pipe can be effectively improved.

(3) According to the invention, the suspender support beam is arranged on the top of the soil body around the well, the vertical positions of the suspender of the support plate and the mud jacking support die can be adjusted through the suspender position control body, and the mud is pressed into the gap between the mud jacking support die and the building blocks around the well through the mud jacking pump body to form the mortar layer of the shaft, so that the flatness and the construction efficiency of the mortar layer of the shaft can be effectively improved.

(4) According to the invention, the disassembly-free outer die and the shaft inner die are adopted to pour the shaft cast-in-place section, and the transverse positions of the first inner die and the second inner die can be respectively controlled through the first position control body and the second position control body, so that the shaft inner die can be quickly disassembled and assembled, and the difficulty of the shaft cast-in-place section pouring construction is reduced.

(5) The stiffening anchor bars, the supporting bedplate, the connecting rib plates and the well lid supporting body are arranged at the lower part of the well lid plate, so that the bearing capacity of the well soil body around the well at the lower part of the well lid plate can be effectively improved; meanwhile, the lower surface of the well cover plate is connected with the arc-shaped well cover bottom beam, so that the load sharing effect of the well cover plate can be met, and the concentrated stress of the connecting part of the well cover plate and the well cover supporting body can be effectively reduced.

Drawings

FIG. 1 is a flow chart of the construction of a water supply and drainage pipeline;

FIG. 2 is a schematic view of a laying structure of a horizontal water conveying pipe;

FIG. 3 is a schematic view of a cast-in-place socket construction;

FIG. 4 is a cross-sectional view of the pipe side form supporting structure of FIG. 3;

FIG. 5 is a schematic longitudinal section view of a laying structure of a horizontal water conveying pipe;

FIG. 6 is a schematic diagram of a wellbore mortar layer construction configuration;

FIG. 7 is a schematic view of the connection structure of the slurry supply ring pipe and the slurry pressing and supporting mold in FIG. 6;

FIG. 8 is a schematic diagram of a construction structure of a cast-in-place section of a shaft;

FIG. 9 is a schematic cross-sectional view of the arrangement structure of the inner mold and the disassembly-free outer mold of the shaft of FIG. 8;

fig. 10 is a schematic view of the arrangement structure of the well cover plate.

Description of reference numerals: 1-horizontal water conveying pipe; 2-a pipeline layout groove; 3-checking a well shaft; 4-prefabricating a tube seat; 5-a cast-in-place pipe seat; 6-soil body around the pipe; 7-a channel top slide rail; 8-sliding supporting beam; 9-supporting the arc plate; 10-a position control bolt; 11-a groove platen; 12-a pipeline sling; 13-a rigid hanger plate; 14-sling attachment plates; 15-pipeline control body; 16-a horizontal mud jacking pipe; 17-tube seat obturator; 18-pipe connecting troughs; 19-a slip connector; 20-a glide channel; 21-supporting hanging posts; 22-a trench connector; 23-positioning a pressure plate; 24-a template support; 25-support anchor bars; 26-pipeline side mould; 27-side pressure bolts; 28-a template platen; 29-connecting the sealing layer; 30-a pipe groove filling body; 31-side die standing plates; 32-side die connecting plates; 33-filling a preset tube; 34-perfusion scope; 35-a pressure plate limiting groove; 36-well periphery blocks; 37-bottom positioning ribs; 38-the periwell soil mass; 39-hanger bar bracing; 40-strut boom; 41-boom housing; 42-boom collar; 43-suspension strut plate; 44-a mud jacking pump body; 45-grouting and supporting a mold; 46-slurry control sealing cover; 47-wellbore mortar bed; 48-a boom control body; 49-reinforcing supporting ribs; 50-slurry supply ring pipe; 51-hoop side ear panels; 52-disassembly-free external mold; 53-shaft reinforcement cage; 54-external mold positioning ribs; 55-positioning the transverse ribs; 56-top connecting ribs; 57-a strut hanging beam; 58-position control inner pipe; 59-inner mould control body; 60-bracing the capsular bag; 61-a wellbore internal mold; 62-a first control body; 63-a second control body; 64-a first inner mold; 65-a second inner mold; 66-bladder pressurization tube; 67-inner mold connecting plates; 68-a shaft cast-in-place section; 69-control body end hinge; 70-stay plate connecting rods; 71-bag supporting plate; 72-a weight-on-bracket; 73-a well perimeter pack; 74-stiff anchor bars; 75-a support platen; 76-connecting rib plates; 77-well lid plate; 78-well lid bottom beam; 79-well lid connecting ribs; 80-platen connecting plate; 81-a well lid support; 82-a well cover sealing ring; 83-horizontal slurry supply pipe.

Detailed Description

The present invention will be further described with reference to the following examples. The following examples are set forth merely to aid in the understanding of the invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Example one

FIG. 1 is a flow chart of the construction of the water supply and drainage pipeline of the present invention, and referring to FIG. 1, the construction method of the water supply and drainage pipeline comprises the following construction steps:

1) construction preparation: surveying to determine the laying position of the horizontal water conveying pipe 1, digging a pipeline laying groove 2 and an inspection well shaft 3, and preparing materials and devices required by construction;

2) laying a water conveying transverse pipe: uniformly distributing prefabricated pipe seats 4 at intervals along the length direction of the pipeline distribution groove 2, and then hanging the horizontal water conveying pipes 1 on the prefabricated pipe seats 4; respectively laying a groove top slide rail 7 on the top surface of the pipe-surrounding soil body 6 at two sides of the pipeline laying groove 2, and arranging a sliding support beam 8 and a support arc plate 9 between the groove top slide rails 7 which are opposite in mirror image; the groove pressing plate 11 is firmly connected with the side wall of the pipeline laying groove 2 by fastening the position control bolt 10; the lower surface of the supporting arc plate 9 is connected with a rigid hanging plate 13 through a pipeline control body 15; after the pipeline sling 12 passes through the bottom of the horizontal water conveying pipe 1, the pipeline sling is firmly connected with sling connecting plates 14 at two ends of a rigid hanging plate 13; the longitudinal gradient of the horizontal water conveying pipe 1 is corrected through the pipeline control body 15, and then grouting is conducted to the gap between the prefabricated pipe seat 4 and the horizontal water conveying pipe 1 through the horizontal grouting pipe 16 in the prefabricated pipe seat 4 to form a pipe seat sealing body 17;

3) construction of a cast-in-place pipe seat and a pipe groove filling body: arranging template supports 24 between the longitudinally adjacent prefabricated pipe seats 4, and firmly connecting the template supports 24 with the soil body 6 around the pipe through support anchor bars 25; two sides of the horizontal water conveying pipe 1 are respectively provided with a pipeline side die 26, and the pipeline side dies 26 are supported by side pressure bolts 27 and template pressing plates 28, so that a connection sealing layer 29 at the top of each pipeline side die 26 is tightly attached to the horizontal water conveying pipe 1; firstly, filling a pipe groove filler 30 into gaps between the horizontal water conveying pipe 1 and the pipeline arrangement groove 2 by using external filling equipment to stabilize the horizontal water conveying pipe 1, then removing the restraint of the horizontal water conveying pipe 1 by the pipeline control body 15 and the rigid hanging plate 13, and then performing pipe groove filler 30 construction in the residual area;

4) building blocks around the well and constructing a shaft mortar layer: building well peripheral building blocks 36 above the horizontal water conveying pipe 1 at the inspection well part from bottom to top in sequence, and arranging bottom positioning ribs 37 at the tops of the well peripheral building blocks 36; a hanger rod supporting beam 39 is arranged on the top of the soil body 38 around the well, the supporting plate hanger rod 40 is arranged in a hanger rod sleeve 41 on the hanger rod supporting beam 39 in a penetrating way, a hanger rod hoop 42 is arranged at the top end of the supporting plate hanger rod 40, then a hoop side ear plate 51 is arranged on the hanger rod hoop 42, the lower surface of the hoop side ear plate 51 is connected with a hanger rod control body 48 on the hanger rod supporting beam 39, and a hanging supporting plate 43 is arranged at the bottom end of the supporting plate hanger rod 40; grouting the gap between the grouting support die 45 at the end part of the suspension support plate 43 and the well periphery building block 36 through the grouting pump body 44 on the suspension support plate 43 and the horizontal grout supply pipe 83, and controlling the mortar compactness through the grout control sealing cover 46 at the top of the grouting support die 45 to form a shaft mortar layer 47; the vertical positions of the supporting plate suspender 40 and the mud jacking supporting die 45 are adjusted through the suspender control body 48;

5) construction of a cast-in-place section of a shaft: firstly, the disassembly-free outer mold 52 and the shaft steel reinforcement cage 53 are firmly connected through the outer mold positioning rib 54, then the positioning transverse rib 55 at the bottom of the shaft steel reinforcement cage 53 is firmly connected with the bottom positioning rib 37, and the positioning transverse rib 55 at the top of the shaft steel reinforcement cage 53 is firmly connected with the strut hanging beam 57 at the top of the soil body 38 around the shaft through the top connecting rib 56; inserting the inner mold control body 59, the cross-brace bag 60 and the shaft inner mold 61 into the manhole shaft 3 through the position control inner pipe 58; firstly, respectively applying transverse jacking force to a first inner die 64 and a second inner die 65 sequentially through a first control body 62 and a second control body 63, connecting the first inner die 64 and the second inner die 65 through an inner die connecting plate 67, applying transverse jacking force to a cross-bracing bag 60 through a bag pressurizing pipe 66, firmly connecting the bottom of a shaft inner die 61 and the shaft peripheral building blocks 36, and then performing shaft cast-in-place section 68 pouring construction by adopting concrete pouring equipment;

6) construction of a filling body around the well: and after the strength of the cast-in-place section 68 of the shaft is formed, constructing a filler 73 around the shaft in the cast-in-place section 68 of the shaft.

7) Arranging a supporting bedplate and a connecting rib plate: embedding stiff anchor bars 74 into the leading holes in the soil body 38 around the well from the top surface of the filling body 73 around the well, and excavating the groove and pressing the slurry to form a supporting bedplate 75; inserting a connecting rib plate 76 into a hole leading from the face of the soil body 38 around the well above the supporting bedplate 75 to the soil body 38 around the well;

8) well cover plate layout: welding a well cover bottom beam 78 on the lower surface of the well cover plate 77, arranging a well cover connecting rib 79 between the well cover plate 77 and the well cover bottom beam 78, and placing the bedplate connecting plates 80 at two ends of the well cover bottom beam 78 on the supporting bedplate 75; pouring concrete to the top of the shaft cast-in-place section 68 by adopting external pouring equipment to form a well cover supporting body 81; a manhole cover sealing ring 82 is provided in a gap between the manhole cover plate 77 and the soil 38 around the manhole.

Example two

Fig. 2 is a schematic diagram of a laying structure of a water delivery transverse pipe, fig. 3 is a schematic diagram of a construction structure of a cast-in-place pipe seat, fig. 4 is a schematic diagram of a section of a support structure of a side mold of a pipeline in fig. 3, fig. 5 is a schematic diagram of a longitudinal section of the laying structure of the water delivery transverse pipe, fig. 6 is a schematic diagram of a construction structure of a mortar layer of a shaft, fig. 7 is a schematic diagram of a connection structure of a mortar supply ring pipe and a mortar pressing support mold in fig. 6, fig. 8 is a schematic diagram of a construction structure of a cast-in-place section of the shaft, fig. 9 is a schematic diagram of a cross section of a laying structure of an inner mold and an outer mold of a removal-free shaft in fig. 8, and fig. 10 is a schematic diagram of a laying structure of a well cover plate. 2-10, a sliding support beam 8 and a support arc plate 9 are arranged between the mirror-image opposite groove top sliding rails 7 of the water supply and drainage pipeline, and the longitudinal gradient of the horizontal water delivery pipe 1 can be corrected through a pipeline sling 12 and a pipeline control body 15; the prefabricated pipe seats 4 and the cast-in-place pipe seats 5 are distributed at intervals along the length direction of the horizontal water conveying pipe 1; the vertical positions of the supporting plate suspender 40 and the mud jacking and supporting die 45 can be adjusted through the suspender control body 48, and a shaft mortar layer 47 is formed by mud jacking towards the clearance between the mud jacking and supporting die 45 and the building blocks 36 around the well through the mud jacking pump body 44; adopting the disassembly-free outer mold 52 and the shaft inner mold 61 to cast a shaft cast-in-place section 68, and respectively controlling the transverse positions of the first inner mold 64 and the second inner mold 65 through the first control body 62 and the second control body 63; the lower part of the well cover plate 77 is provided with a stiff anchor rib 74, a support bedplate 75, a connecting rib plate 76 and a well cover support body 81, and the surface of the well cover plate 77 is connected with a circular arc well cover bottom beam 78.

The horizontal water conveying pipe 1 adopts a plastic corrugated pipe with the diameter of 1000 mm.

The cross section of the pipeline laying groove 2 is trapezoidal, the bottom width is 1500mm, and the top width is 2500 mm.

The diameter of a well shaft 3 of the inspection well is 1000mm, the lower part of the well shaft adopts well peripheral building blocks 36, and the upper part of the well shaft adopts cast-in-place reinforced concrete materials for pouring.

The prefabricated pipe seat 4 is made of reinforced concrete material with the strength grade of C30, the maximum height is 20cm, and the width is 20 cm. The upper surface is provided with a pipeline connecting groove 18 connected with the horizontal water conveying pipe 1, the horizontal grouting pipe 16 with the L-shaped cross section is arranged in the prefabricated pipe seat 4, and the top end of the horizontal grouting pipe 16 extends out of the top surface of the pipeline connecting groove 18; the horizontal grouting pipe 16 is made of a steel pipe with the diameter of 6cm, the width of the pipe connecting groove 18 is 10mm, and the depth of the pipe connecting groove is 10 mm.

The soil body 6 around the pipe is cohesive soil in a hard plastic state.

The groove top sliding rail 7 is formed by rolling a steel plate with the thickness of 10mm, the bottom width is 20cm, the height is 10cm, the groove top sliding rail is laid in parallel to the pipeline laying groove 2, and a sliding groove channel 20 with an inverted T-shaped cross section and connected with the sliding connector 19 is arranged on the groove top sliding rail 7; the sliding connector 19 is formed by rolling a steel plate with the thickness of 10mm, the cross section of the sliding connector is in an inverted T shape, the bottom width is 16cm, and the height is 8 cm; the cross section of the sliding channel 20 is in an inverted T shape, the bottom width is 18cm, and the height is 8 cm.

The sliding support beam 8 is formed by rolling H-shaped steel with the specification of 100 multiplied by 6 multiplied by 8, and the lower surface is connected with the support arc plate 9 through a support hanging column 21; the supporting hanging columns 21 adopt H-shaped steel with the specification of 150 multiplied by 7 multiplied by 10. .

The supporting arc plate 9 is formed by rolling a steel plate with the thickness of 10mm, the cross section of the supporting arc plate is arc-shaped, the two ends of the supporting arc plate are provided with groove connecting bodies 22, and the lower surface of the supporting arc plate is connected with the rigid hanging plate 13 through the pipeline control body 15; the rigid hanging plate 13 is formed by rolling a steel plate with the thickness of 10mm, the pipeline control body 15 adopts a hydraulic jack, the groove connecting body 22 comprises a positioning pressing plate 23 and a groove pressing plate 11, the positioning pressing plate 23 is connected with the supporting arc plate 9 in a welding mode, and the groove connecting body is connected with the groove pressing plate 11 through a position control bolt 10; the groove pressing plate 11 is made of a steel plate with the thickness of 2mm, and the positioning pressing plate 23 is made of a steel plate with the thickness of 10 mm.

The position control bolt 10 is formed by rolling a screw rod with the diameter of 30mm, is in contact connection with the surface of the groove pressing plate 11, and is in threaded connection with the positioning pressing plate 23.

The pipeline sling 12 is made of a steel wire rope with the diameter of 20mm, and is firmly connected with sling connecting plates 14 at two ends of a rigid hanging plate 13 after penetrating through the bottom of the horizontal water conveying pipe 1; the sling connecting plate 14 is formed by rolling a steel plate with the thickness of 10 mm.

The tube socket obturator 17 is made of self-compacting concrete material, with the emphasis of class C35.

The template support 24 is formed by rolling a steel plate with the thickness of 20mm, the cross section of the template support is in an inverted T shape, a hole connected with a support anchor bar 25 is formed in a transverse plate at the bottom of the template support 24, and a thread connected with a side pressure bolt 27 is formed on a vertical plate of the template support 24; the support anchor bars 25 are threaded steel bars with the diameter of 22mm, and the side pressure bolts 27 are bolts with the inner diameter of 30 mm.

The pipeline side die 26 is formed by rolling a steel plate with the thickness of 3mm and comprises a side die riser 31 and a side die connecting plate 32, the side die connecting plate 32 is vertically welded with the side die riser 31, and the upper surface of the side die connecting plate 32 is provided with a curved surface connected with the horizontal water conveying pipe 1.

Template press 28 is rolled from a 3mm thick steel plate.

The connection sealing layer 29 is circular and is formed by cutting a rubber plate with the thickness of 3 mm.

The pipe groove filler 30 is medium coarse sand with uniform particle size.

A pouring preset pipe 33 and a pouring observation pipe 34 are arranged on the side surface of the side die-set plate 31, an external pouring device is adopted to pour through the pouring preset pipe 33 to form a cast-in-situ pipe seat 5, and a pressure plate limiting groove 35 is arranged on the outer side wall; the perfusion presetting pipe 33 and the perfusion observation pipe 34 are respectively made of steel pipes with the diameters of 60mm and 30mm, the pressure plate limiting groove 35 is made of steel plates with the thickness of 2mm through rolling, and the plane is circular.

Building well peripheral building blocks 36 above a horizontal water conveying pipe 1 at the inspection well part from bottom to top in sequence, wherein the well peripheral building blocks are precast concrete blocks, and bottom positioning ribs 37 are arranged at the tops of the well peripheral building blocks 36; the bottom positioning rib 37 adopts a threaded steel bar with the diameter of 20 mm.

The soil body 38 around the well is cohesive soil in a hard plastic state.

The hanger rod supporting beam 39 is formed by rolling 200 × 200 × 8 × 12 section steel, a hanger rod casing 41 which is overlapped with the axis of the inspection shaft 3 is arranged in the middle, and a hanger rod control body 48 is arranged; the hanger rod casing 41 is formed by rolling a steel plate with the thickness of 2mm, and the hanger rod position control body 48 adopts a hydraulic jack.

The gusset hanger bar 40 is rolled by H-shaped steel with the strength grade of Q345D and the specification of 100 multiplied by 6 multiplied by 8.

The hanger rod hoop 42 is formed by rolling a steel plate with a thickness of 2mm, and the height is 10 cm.

The suspension supporting plate 43 is formed by rolling a steel plate with the thickness of 10mm, the upper surface is provided with a mud jacking pump body 44, the end part is provided with a mud jacking and supporting die 45 along the annular direction, and a reinforcing supporting rib 49 is arranged between the mud jacking and supporting die 45 and the suspension supporting plate 43; the mud jacking pump body 44 adopts a mud jacking pump, the mud jacking and supporting die 45 is formed by rolling a steel plate with the thickness of 3mm, and the reinforcing and supporting rib 49 is formed by rolling a steel pipe with the diameter of 30 mm.

The slurry control cover 46 is cut in a ring shape using a rubber sheet having a thickness of 3 mm.

The wellbore slurry layer 47 is formed by defining a slurry consistency by the slurry control cap 46, the slurry being numbered M20.

The slurry supply circular pipe 50 and the slurry supply horizontal pipe 83 both adopt steel pipes with the diameter of 60 mm.

The hoop-side ear plate 51 is rolled from a steel plate having a thickness of 10 mm.

The disassembly-free outer mold 52 is prefabricated by reinforced concrete materials, has the thickness of 4cm, is firmly connected with the shaft steel reinforcement cage 53 through the outer mold positioning rib 54, and enables the positioning transverse rib 55 at the bottom of the shaft steel reinforcement cage 53 to be firmly connected with the bottom positioning rib 37; the shaft steel reinforcement cage 53 is formed by binding a stirrup with the diameter of 8mm and a threaded steel bar with the diameter of 25 mm; the outer die positioning ribs 54 and the positioning transverse ribs 55 are both made of twisted steel bars with the diameter of 12 mm; the top connecting rib 56 is formed by rolling a screw rod with the diameter of 20 mm.

The bracket hanging beam 57 is formed by rolling H-shaped steel with the specification of 200 multiplied by 8 multiplied by 12, a hollow hole for the top connecting rib 56 to penetrate is arranged on the bracket hanging beam 57, and a bracket weight body 72 is arranged at the upper part of the bracket hanging beam 57; the bracket weight 72 is a precast concrete block with a weight of 50 kg.

The position control inner pipe 58 is formed by rolling a steel pipe with the diameter of 300mm, the top end of the position control inner pipe is vertically welded with the strut hanging beam 57, the bottom end of the position control inner pipe is connected with the bag supporting plate 71 through a supporting

plate connecting rod

70, and 2 inner die control bodies 59 are arranged along the height direction; the supporting plate connecting rod 70 is formed by rolling a steel pipe with the diameter of 100mm, and the bag supporting plate 71 is formed by rolling a steel plate with the thickness of 2 mm.

The inner mold control body 59 comprises a first control body 62 and a second control body 63 which are both hydraulic jacks, one end of the inner mold control body is connected with the position control inner tube 58 in a welding mode, and the other end of the inner mold control body is connected with the shaft inner mold 61 through a control body end hinge 69; the control body end hinge 69 adopts a spherical hinge with the diameter of 60 mm.

The cross-bracing bag 60 is a closed cavity body sewn by a rubber sheet with the thickness of 2mm and is communicated with an external pressure pipe through a bag pressure pipe 66; the bladder pressurizing pipe 66 is a rubber pipe having a diameter of 30 mm.

The shaft inner die 61 comprises two first inner dies 64 and two second inner dies 65 which are enclosed into a circular truncated cone shape and are respectively connected with the first control body 62 and the second control body 63 through a control body end hinge 69; the first inner die 64 and the second inner die 65 are both formed by rolling steel plates with the thickness of 4 mm.

The internal mold connecting plate 67 is formed by rolling a steel plate with the thickness of 3 mm.

The cast-in-place section 68 of the wellbore is cast from reinforced concrete material having a strength rating of C30.

The well filler 73 is made of lightweight concrete having a strength grade of C30.

The stiff anchor bars 74 are formed by rolling steel pipes with the diameter of 100mm, the extending sections are anchored into the supporting bedplate 75, and the anchoring mode is grouting bonding; the support deck 75 is constructed of a reinforced concrete material having a strength rating of C30.

The connecting rib plates 76 are formed by rolling steel plates with the thickness of 10 mm.

The well lid plate 77 is rolled from a steel plate having a thickness of 20 mm.

The well lid bottom beam 78 is formed by rolling a steel plate with the thickness of 10mm, the width of the well lid bottom beam is 20cm, the cross section of the well lid bottom beam is in a circular arc shape, and platen connecting plates 80 are welded at two ends of the well lid bottom beam; the cross section of the bedplate connecting plate 80 is L-shaped and is formed by rolling a steel plate with the thickness of 2 mm.

The well lid connecting rib 79 is a threaded steel bar with the diameter of 32 mm.

The well lid support body 81 is made of a concrete material with the strength grade of C30, the formwork is poured, and the inner side surface of the well lid support body is flush with the inner side surface of the shaft cast-in-place section 68.

The well lid sealing ring 82 is formed by cutting a rubber sheet with the thickness of 3 mm.

Claims

1. The construction method of the water supply and drainage pipeline is characterized by comprising the following construction steps:

1) construction preparation: surveying and determining the laying position of the horizontal water conveying pipe (1), digging a pipeline laying groove (2) and an inspection well shaft (3), and preparing materials and devices required by construction;

2) laying a water conveying transverse pipe: uniformly arranging prefabricated pipe seats (4) at intervals along the length direction of the pipeline arrangement groove (2), and then hanging the horizontal water delivery pipe (1) on the prefabricated pipe seats (4); a groove top sliding rail (7) is respectively paved on the top surfaces of the soil bodies (6) around the pipes on the two sides of the pipeline laying groove (2), and a sliding support beam (8) and a support arc plate (9) are arranged between the groove top sliding rails (7) with opposite mirror images; the groove pressing plate (11) is firmly connected with the side wall of the pipeline laying groove (2) by fastening the position control bolt (10); the lower surface of the supporting arc plate (9) is connected with a rigid hanging plate (13) through a pipeline control body (15); after the pipeline sling (12) passes through the bottom of the horizontal water delivery pipe (1), the pipeline sling is firmly connected with sling connecting plates (14) at two ends of a rigid hanging plate (13); the longitudinal gradient of the horizontal water conveying pipe (1) is corrected through the pipeline control body (15), and then grouting is conducted to the gap between the prefabricated pipe seat (4) and the horizontal water conveying pipe (1) through the horizontal grouting pipe (16) in the prefabricated pipe seat (4) to form a pipe seat sealing body (17);

3) construction of a cast-in-place pipe seat and a pipe groove filling body: a template support (24) is arranged between the longitudinally adjacent prefabricated pipe seats (4), and the template support (24) is firmly connected with the soil body (6) around the pipe through support anchor bars (25); two sides of the horizontal water conveying pipe (1) are respectively provided with a pipeline side die (26), and the pipeline side dies (26) are supported through side pressure bolts (27) and template pressing plates (28), so that a connecting sealing layer (29) at the top of the pipeline side dies (26) is tightly attached and connected with the horizontal water conveying pipe (1); firstly, filling a pipe groove filling body (30) into a gap between a horizontal water conveying pipe (1) and a pipeline arrangement groove (2) by adopting external filling equipment to stabilize the horizontal water conveying pipe (1), then removing the restraint of a pipeline control body (15) and a rigid hanging plate (13) on the horizontal water conveying pipe (1), and then constructing the pipe groove filling body (30) in the residual area;

4) building blocks around the well and constructing a shaft mortar layer: building well peripheral building blocks (36) above a horizontal water conveying pipe (1) at the inspection well part from bottom to top in sequence, and arranging bottom positioning ribs (37) at the tops of the well peripheral building blocks (36); a hanger rod supporting beam (39) is arranged at the top of the soil body (38) around the well, a hanger rod supporting rod (40) is arranged in a hanger rod sleeve (41) on the hanger rod supporting beam (39) in a penetrating way, a hanger rod hoop (42) is arranged at the top end of the hanger rod (40) of the hanger rod, a hoop side ear plate (51) is arranged on the hanger rod hoop (42), the lower surface of the hoop side ear plate (51) is connected with a hanger rod control body (48) on the hanger rod supporting beam (39), and a suspension supporting plate (43) is arranged at the bottom end of the hanger rod (40) of the hanger rod of the supporting plate; grouting towards a gap between a grouting support die (45) at the end part of the suspension supporting plate (43) and a well periphery building block (36) through a grouting pump body (44) on the suspension supporting plate (43) and a horizontal grout supply pipe (83), and controlling the mortar compactness through a grout control sealing cover (46) at the top of the grouting support die (45) to form a shaft mortar layer (47); the vertical positions of the supporting plate suspender (40) and the mud jacking and supporting die (45) are adjusted through the suspender control body (48);

5) construction of a cast-in-place section of a shaft: firstly, the disassembly-free outer mold (52) is firmly connected with the shaft steel reinforcement cage (53) through the outer mold positioning rib (54), then the positioning transverse rib (55) at the bottom of the shaft steel reinforcement cage (53) is firmly connected with the bottom positioning rib (37), and the positioning transverse rib (55) at the top of the shaft steel reinforcement cage (53) is firmly connected with the support hanging beam (57) at the top of the soil body (38) around the well through the top connecting rib (56); inserting an inner mold control body (59), a cross-bracing bag (60) and a shaft inner mold (61) into a shaft (3) of the inspection well through a position control inner pipe (58); firstly, respectively applying transverse jacking pressure to a first inner die (64) and a second inner die (65) sequentially through a first control body (62) and a second control body (63), enabling the first inner die (64) and the second inner die (65) to be connected through an inner die connecting plate (67), then applying transverse jacking pressure to a cross-brace bag (60) through a bag pressurizing pipe (66), enabling the bottom of a shaft inner die (61) to be firmly connected with a shaft peripheral building block (36), and then adopting concrete pouring equipment to perform shaft cast-in-place section (68) pouring construction;

6) construction of a filling body around the well: after the cast-in-place section (68) of the shaft forms the strength, constructing a filling body (73) around the shaft in the cast-in-place section (68) of the shaft;

7) arranging a supporting bedplate and a connecting rib plate: implanting stiff anchor bars (74) into the leading holes in the soil body (38) around the well from the top surface of the filling body (73) around the well, and excavating a groove and pressing slurry to form a supporting bedplate (75); inserting a connecting rib plate (76) into a hole leading from the face of the soil body (38) around the well to the soil body (38) around the well above the supporting bedplate (75);

8) well cover plate layout: welding a well cover bottom beam (78) on the lower surface of the well cover plate (77), arranging a well cover connecting rib (79) between the well cover plate (77) and the well cover bottom beam (78), and placing the bedplate connecting plates (80) at the two ends of the well cover bottom beam (78) on the supporting bedplate (75); pouring concrete to the top of the shaft cast-in-place section (68) by adopting external pouring equipment to form a well cover supporting body (81); a well lid sealing ring (82) is arranged in the gap between the well lid plate (77) and the soil body (38) around the well.

2. The construction method of a water supply and drainage pipeline according to claim 1, wherein: step 2), the prefabricated pipe seat (4) is made of reinforced concrete materials, a pipeline connecting groove (18) connected with the horizontal water conveying pipe (1) is formed in the upper surface of the prefabricated pipe seat, a horizontal grouting pipe (16) with an L-shaped cross section is arranged inside the prefabricated pipe seat (4), and the top end of the horizontal grouting pipe (16) extends out of the top surface of the pipeline connecting groove (18); the groove top sliding rail (7) is formed by rolling a steel plate and is laid in parallel to the pipeline laying groove (2), and a sliding channel (20) which is provided with an inverted T-shaped cross section and is connected with a sliding connector (19) is arranged on the groove top sliding rail (7); the sliding support beam (8) is formed by rolling profile steel or a steel plate, and the lower surface of the sliding support beam is connected with the support arc plate (9) through a support hanging column (21); the sliding connector (19) is formed by rolling a steel plate, and the cross section of the sliding connector is in an inverted T shape; the supporting arc plate (9) is formed by rolling a steel plate, the cross section of the supporting arc plate is arc-shaped, and two ends of the supporting arc plate are provided with groove connectors (22); the groove connecting body (22) comprises a positioning pressing plate (23) and a groove pressing plate (11), the positioning pressing plate (23) is connected with the supporting arc plate (9) in a welding mode, and the positioning pressing plate (23) is connected with the groove pressing plate (11) through a position control bolt (10); the position control bolt (10) is formed by rolling a screw rod, the position control bolt (10) is in surface contact connection with the groove pressing plate (11), and the position control bolt (10) is in threaded connection with the positioning pressing plate (23).

3. The construction method of a water supply and drainage pipeline according to claim 1, wherein: step 3), the template support (24) is formed by rolling a steel plate, the cross section of the template support is in an inverted T shape, a hole connected with a support anchor bar (25) is formed in a bottom transverse plate of the template support (24), and a thread connected with a side pressure bolt (27) is formed in a vertical plate of the template support (24); the pipeline side die (26) is formed by rolling an alloy plate and comprises a side die vertical plate (31) and a side die connecting plate (32), the side die connecting plate (32) is vertically welded with the side die vertical plate (31) or integrally rolled, and a curved surface connected with the water conveying horizontal pipe (1) is arranged on the upper surface of the side die connecting plate (32); the top surface of the side die-casting plate (31) is adhered with a sealing layer (29), the side surface is provided with a pouring preset pipe (33) and a pouring observation pipe (34), an external pouring device is adopted to pour through the pouring preset pipe (33) to form a cast-in-place pipe seat (5), and the outer side wall of the side die-casting plate (31) is provided with a pressing plate limiting groove (35); the pressing plate limiting groove (35) is made of steel plates and fixed on the outer side wall of the side die standing plate (31) through a stud, the plane is in a circular ring shape, and the die pressing plate (28) is matched with the pressing plate limiting groove (35).

4. The construction method of a water supply and drainage pipeline according to claim 1, wherein: step 4), the hanger rod supporting beam (39) is formed by rolling profile steel, a hanger rod sleeve (41) which is overlapped with the axis of the inspection well shaft (3) is arranged in the middle, and a hanger rod control body (48) is arranged on the hanger rod supporting beam (39); the hoisting rod control body (48) adopts a hydraulic jack; the suspension supporting plate (43) is formed by rolling a steel plate, the upper surface is provided with a mud jacking pump body (44), the end part is provided with a mud jacking supporting die (45) along the annular direction, and a reinforcing supporting rib (49) is arranged between the mud jacking supporting die (45) and the suspension supporting plate (43); the horizontal slurry supply pipes (83) are steel pipes, one ends of the horizontal slurry supply pipes are inserted into the inner surface of the slurry pressing supporting die (45), the other ends of the horizontal slurry supply pipes are communicated with the slurry supply ring pipes (50), and the horizontal slurry supply pipes (83) are uniformly distributed at intervals in the circumferential direction on the periphery of the slurry supply ring pipes (50); the slurry supply ring pipe (50) is communicated with the slurry supply transverse pipe (83) and is connected with the slurry pressing pump body (44) through a connecting pipeline; the mud jacking and supporting die (45) is formed by rolling an alloy plate, and the top end of the mud jacking and supporting die is connected with the mud control sealing cover (46) in a sticking way; the slurry control sealing cover (46) is cut into a ring shape by adopting a rubber sheet.

5. The construction method of a water supply and drainage pipeline according to claim 1, wherein: step 5), the inner mold control body (59) comprises a first control body (62) and a second control body (63) which are both hydraulic jacks, one end of each hydraulic jack is connected with the inner position control pipe (58) in a welding mode, and the other end of each hydraulic jack is connected with the inner shaft mold (61) through a control body end hinge (69); the shaft inner die (61) comprises two first inner dies (64) and two second inner dies (65) which are enclosed into a circular truncated cone shape, and the first inner dies (64) and the second inner dies (65) are respectively connected with a first control body (62) and a second control body (63) through control body end hinges (69); the position control inner pipe (58) is formed by rolling a steel pipe, the top end of the position control inner pipe is vertically welded with the strut hanging beam (57), the bottom end of the position control inner pipe is connected with the bag supporting plate (71) through a supporting plate connecting rod (70), and 2-3 inner die control bodies (59) are arranged along the height direction of the position control inner pipe (58); the bag supporting plate (71) is formed by rolling a steel plate, one side of the bag supporting plate is welded with the supporting plate connecting rod (70), and the other side of the bag supporting plate is connected with the cross-bracing bag (60) in a sticking way; the cross-bracing bladder (60) is in a closed ring shape by adopting rubber sheet sewing and is communicated with an external pressure pipe through a bladder pressurization pipe (66); the support hanging beam (57) is formed by rolling steel plates and profile steel, a hollow hole for the top connecting rib (56) to penetrate through is formed in the support hanging beam (57), and a support pressing weight body (72) is arranged on the upper portion of the support hanging beam (57).

6. The construction method of a water supply and drainage pipeline according to claim 1, wherein: step 7), the connecting rib plates (76) are formed by rolling steel plates or twisted steel bars; the stiff anchor bars (74) are formed by rolling steel pipes, and the extending sections are anchored in the supporting bedplate (75); the supporting bedplate (75) is made of reinforced concrete materials.

7. The construction method of a water supply and drainage pipeline according to claim 1, wherein: step 8), the well lid bottom beam (78) is formed by rolling profile steel, the cross section of the well lid bottom beam is arc-shaped, and two ends of the well lid bottom beam are welded with bedplate connecting plates (80); the cross section of the bedplate connecting plate (80) is L-shaped and is formed by rolling a steel plate; the well lid supporting body (81) is made of concrete materials, a formwork is poured, and the inner side surface of the well lid supporting body is flush with the inner side surface of the shaft cast-in-place section (68); the well lid sealing ring (82) is made of rubber sheets or asphalt mixture or self-compacting concrete.