CN114837741A - Subway station prevents drainage system - Google Patents

Abstract

The invention provides a subway station waterproof and drainage system, which comprises a side arch wall waterproof and drainage system and a bottom plate waterproof and drainage system, wherein the side arch wall waterproof and drainage system comprises a buffer layer arranged at the positions of a side wall and an arch wall and a waterproof plate arranged at one side of the back surface of the buffer layer, a plurality of annular water permeable blind pipes and a plurality of annular drain plate strips are arranged between the buffer layer and the waterproof plate at intervals along the longitudinal direction, a longitudinal side wall drainage blind pipe communicated with a plurality of annular water permeable blind pipes and the water outlet ends of a plurality of annular drainage plate strips is arranged at the bottom of the side wall, a plurality of transverse water guide pipes are arranged on the longitudinal side wall drainage blind pipes at intervals along the longitudinal direction, the bottom plate water-proof and drainage system comprises a plurality of longitudinal drainage blind pipes and a plurality of transverse drainage blind pipes which are arranged at the position of the bottom plate and are mutually communicated, and water outlet ends of the plurality of transverse water guide pipes and the plurality of transverse drainage blind pipes are respectively communicated with the drainage side ditch. The water-proof and drainage system can guarantee the safety of station main body construction and later-period operation.

Description

Subway station prevents drainage system

Technical Field

The invention relates to the technical field of subway station construction, in particular to a waterproof and drainage system for a subway station.

Background

One of the biggest problems in the main body construction and later-stage operation of the subway station is that the waterproof construction quality is difficult to guarantee, and the later-stage water leakage problem cannot be well solved. At present, the common waterproof construction technology adopts full-package waterproof construction, namely a fully-enclosed flexible waterproof layer is wrapped outside a structure or the fully-enclosed flexible waterproof layer is clamped between an inner lining and an outer lining of a composite lining; taking the underground excavated arched cover station as an example, a waterproof board is used between the primary support and the main structure for complete sealing, and the primary tunnel water seepage is blocked outside the waterproof board. However, due to the influence of various factors such as a lining process and the like, the concrete of the arch part can not be filled in the ordinary condition, so that a ponding channel is easily formed in the arch part, a large amount of water is collected, and the water cannot be dredged in time; meanwhile, once the waterproof layer is damaged, underground water communication is formed between the waterproof layer and the main structure, so that the real function of the waterproof layer cannot be effectively played.

The invention is particularly set forth herein.

Disclosure of Invention

The invention aims to provide a subway station water-proof and drainage system which can effectively solve the problem that the problem of water leakage affects the construction of a station main body and the later operation safety.

The invention provides a subway station waterproof and drainage system, which comprises a side arch wall waterproof and drainage system and a bottom plate waterproof and drainage system, wherein the side arch wall waterproof and drainage system comprises a buffer layer arranged at the positions of a side wall and an arch wall and a waterproof plate arranged at one side of the back surface of the buffer layer, a plurality of annular water permeable blind pipes and a plurality of annular drain plate strips are arranged between the buffer layer and the waterproof plate at intervals along the longitudinal direction, a longitudinal side wall drainage blind pipe communicated with a plurality of annular water permeable blind pipes and the water outlet ends of a plurality of annular drainage plate strips is arranged at the bottom of the side wall, a plurality of transverse water guide pipes are arranged on the longitudinal side wall drainage blind pipes at intervals along the longitudinal direction, the bottom plate water-proof and drainage system comprises a plurality of longitudinal drainage blind pipes and a plurality of transverse drainage blind pipes which are arranged at the position of the bottom plate and are mutually communicated, and water outlet ends of the plurality of transverse water guide pipes and the plurality of transverse drainage blind pipes are respectively communicated with the drainage side ditch.

Furthermore, a plastic gasket is arranged on one side of the back surface of the buffer layer, the plastic gasket and the buffer layer are fixed on the primary support base surface through cement nails, and the waterproof plate is welded and fixed on the plastic gasket.

Furthermore, an externally-attached water stop belt is arranged at the position where the waterproof board is closed, and the externally-attached water stop belt is adhered and fixed to the position where the waterproof board is closed through a cold self-adhesive waterproof coiled material.

Furthermore, a blind ditch inverted filter layer is arranged at the bottom of the side wall, and the longitudinal side wall drainage blind pipe is arranged inside the blind ditch inverted filter layer.

Furthermore, a plurality of openings with the aperture not smaller than 10mm are arranged at intervals on the upper half parts of the longitudinal side wall drainage blind pipe, the longitudinal drainage blind pipe and the transverse drainage blind pipe, and non-woven fabrics are wrapped outside the longitudinal side wall drainage blind pipe, the longitudinal drainage blind pipe and the transverse drainage blind pipe.

Furthermore, a water filtering layer is arranged at the bottom plate, and a plurality of longitudinal drainage blind pipes and a plurality of transverse drainage blind pipes are arranged in the water filtering layer.

Furthermore, a plurality of longitudinal drainage blind pipes are uniformly arranged at the bottom plate position along the transverse direction, and a plurality of transverse drainage blind pipes are arranged at the bottom plate position along the longitudinal direction at intervals of 8-12 m.

Furthermore, a plurality of embedded grouting pipes are arranged at intervals at the positions of the side walls and the arch walls.

Furthermore, water collecting pits are arranged at the two ends of the station, and the water outlet end of the drainage side ditch is communicated with the water collecting pits.

Furthermore, the circumferential water permeable blind pipe adopts a soft spring water permeable pipe, the circumferential water draining plate belt adopts a concave-convex water draining plate belt, the longitudinal side wall water draining blind pipe, the longitudinal water draining blind pipe and the transverse water draining blind pipe adopt double-wall corrugated pipes, and the transverse water guide pipe adopts a PVC pipe.

According to the subway station drainage-preventing system, the waterproof plate is arranged on the part of the main structure of the station except the bottom plate, the longitudinal drainage blind pipe and the transverse drainage blind pipe are arranged on the bottom plate, the annular water permeable blind pipe, the annular drainage plate strip, the longitudinal side wall drainage blind pipe and the transverse water guide pipe are arranged on the side wall and the arch part, so that water can be drained into the drainage side ditches on two sides in time, then drained into the water collecting pits at two ends of the station, and finally concentrated pumping drainage is carried out; in addition, through pre-buried slip casting pipe in the structure, can carry out slip casting leaking stoppage at any time, establish multichannel defence line, and then effectively solved the problem that the seepage water problem influences difficult problems such as station main part construction and later stage operation safety.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural view of a subway station waterproof and drainage system according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a side arch wall drainage system according to an embodiment of the present invention;

FIG. 3 is a schematic view of a connection structure of the circumferential water permeable blind pipe, the longitudinal side wall drainage blind pipe and the transverse water guide pipe according to an embodiment of the present invention;

FIG. 4 is a schematic view of a connection structure of the circumferential drain plate strip, the longitudinal side wall drain blind pipes and the transverse water guide pipes according to an embodiment of the present invention;

FIG. 5 is an enlarged schematic view of a gutter according to an embodiment of the present invention;

FIG. 6 is a schematic view of a connection structure of the circumferential water-permeable blind pipe and the longitudinal side wall drainage blind pipe according to an embodiment of the present invention;

FIG. 7 is a schematic view of a waterproof board fixing structure according to an embodiment of the present invention;

fig. 8 is a schematic view of a waterproof layer header structure according to an embodiment of the present invention;

FIG. 9 is a schematic view of a floor drain prevention system according to an embodiment of the present invention;

FIG. 10 is a schematic view of a connection structure of a longitudinal drainage blind pipe and a transverse drainage blind pipe according to an embodiment of the present invention;

fig. 11 is a schematic structural view of a longitudinal side wall drainage blind pipe, a longitudinal drainage blind pipe or a transverse drainage blind pipe according to an embodiment of the invention.

Description of reference numerals:

1: a side wall; 2: an arch wall; 3: a buffer layer; 4: an annular water permeable blind pipe; 5: a circumferential drain plate strip; 6: a transverse aqueduct; 7: a blind drain inverted filter layer; 8: a drainage blind pipe of the longitudinal side wall; 9: a longitudinal drainage blind pipe; 10: a horizontal drainage blind pipe; 11: non-woven fabrics; 12: a cushion layer; 13: a drainage side ditch; 14: a multi-pass device; 15: a waterproof sheet; 16: an externally-attached water stop; 17: cold self-adhesive waterproof coiled material; 18: primary support; 19: filtering a water layer; 20: embedding a grouting pipe; 21: a cement nail; 22: a plastic gasket.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms also include the plural forms unless the context clearly dictates otherwise, and further, it is understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of the stated features, steps, operations, devices, components, and/or combinations thereof.

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1 to 11, the subway station drainage and waterproofing system of this embodiment includes a side arch wall drainage and waterproofing system and a bottom plate drainage and waterproofing system, the side arch wall drainage and waterproofing system includes a buffer layer 3 disposed at the positions of a side wall 1 and an arch wall 2 and a waterproof plate 15 disposed at one side of the back surface of the buffer layer 3, a plurality of circumferential water permeable blind pipes 4 and a plurality of circumferential drain strips 5 are longitudinally spaced between the buffer layer 3 and the waterproof plate 15, a longitudinal side wall drainage blind pipe 8 communicated with the water outlets of the plurality of circumferential water permeable blind pipes 4 and the plurality of circumferential drain strips 5 is disposed at the bottom of the side wall 1, a plurality of transverse water guide pipes 6 are longitudinally spaced on the longitudinal side wall drainage blind pipe 8, the bottom plate drainage and waterproofing system includes a plurality of longitudinal drainage blind pipes 9 and a plurality of transverse drainage blind pipes 10 disposed at the bottom plate and communicated with each other, drainage side ditches 13 are disposed at the two sides of the bottom plate, the water outlet ends of the plurality of transverse water guide pipes 6 and the plurality of transverse drainage blind pipes 10 are respectively communicated with the drainage side ditch 13.

The subway station drainage preventing system mainly utilizes a subway station drainage preventing system based on half-wrapped waterproof and limited drainage, annular water permeable blind pipes 4, longitudinal side wall drainage blind pipes 8 and transverse water guide pipes 6 are arranged at the positions of side walls 1 and arch walls 2, waterproof plates 15 are adopted at the parts of a station main structure except a bottom plate, longitudinal drainage blind pipes 9 and transverse drainage blind pipes 10 are arranged at the positions of the bottom plate, water is timely drained into drainage side ditches 13 at two sides, then the water is drained into water collecting pits at two ends of a station, and finally concentrated pumping drainage is carried out.

In the subway station water-proof and drainage system of the embodiment, the side arch wall water-proof and drainage system mainly comprises a buffer layer 3, a circumferential water-permeable blind pipe 4, a circumferential drainage plate strip 5, a transverse water guide pipe 6, a blind ditch inverted filter layer 7, a longitudinal side wall drainage blind pipe 8, a waterproof plate 15, an embedded grouting pipe 20 and other components.

After the primary support 18 of the station is finished, the base surfaces of the side wall 1 and the arch wall 2 are treated, and waterproof layers of the side wall 1 and the arch wall 2 are arranged at the position 500mm above the drainage side ditch 13 and comprise a buffer layer 3 and a waterproof plate 15 arranged on the back surface side of the buffer layer 3. The material of the buffer layer 3 is not particularly limited, and for example, a nonwoven fabric or the like can be used; meanwhile, the fixing method of the waterproof plate 15 is not limited strictly, and as shown in fig. 7, for example, a plastic gasket 22 may be provided on the back surface side of the cushion layer 3, and the plastic gasket 22 and the cushion layer 3 may be fixed to the base surface of the preliminary bracing 18 by a cement nail 21, and at this time, the waterproof plate 15 may be fixed to the plastic gasket 22 by welding. Further, as shown in fig. 8, an external water stop 16 may be provided at the leading end position of the waterproof sheet 15, and the external water stop 16 may be fixed to the leading end position of the waterproof sheet 15 by a self-adhesive waterproof roll 17.

When the annular water permeable blind pipe 4, the annular drain plate strip 5 and the transverse water guide pipe 6 are arranged, the specific arrangement mode is not strictly limited, and the arrangement mode can be reasonably arranged according to actual needs. As shown in fig. 2, for example, a circumferential water permeable blind pipe 4, a circumferential drain strip 5 and a transverse water guide pipe 6 may be provided between the cushioning layer 3 and the waterproof sheet 15 at intervals of 4 to 6m in the longitudinal direction; meanwhile, after two annular water permeable blind pipes 4 are arranged, one annular drainage plate strip 5 can be arranged in sequence, and the transverse water guide pipes 6 can be arranged at suitable positions of the longitudinal side wall drainage blind pipes 8 at intervals.

As shown in fig. 3, the circumferential water permeable blind pipe 4, the transverse water guiding pipe 6 and the longitudinal side wall drainage blind pipe 8 can be connected through a multi-way device 14 (such as a three-way pipe and the like); as shown in fig. 4, the longitudinal side wall drainage blind pipe 8 and the annular water permeable blind pipe 4 can be connected by a multi-way device 14 (such as a three-way pipe and the like); as shown in fig. 6, a groove may be formed in the longitudinal side wall blind drain pipe 8, and the circumferential drain plate strip 5 is inserted into the groove of the longitudinal side wall blind drain pipe 8, so that the water outlet end of the circumferential drain plate strip 5 is communicated with the longitudinal side wall blind drain pipe 8. It can be understood that when the water quantity is large, the annular water permeable blind pipe 4 and the annular water draining plate strip 5 can be arranged in an encrypted mode.

The arrangement mode of the longitudinal side wall drainage blind pipe 8 is not strictly limited; as shown in fig. 5, in an embodiment, a blind drain inverted filter layer 7 may be disposed at the bottom position of the side wall 1, and at this time, the longitudinal side wall drain blind pipe 8 may be disposed inside the blind drain inverted filter layer 7.

In the side arch wall water-proof and drainage system of the embodiment, it can be understood that the annular water-permeable blind pipe 4 and the annular drainage plate strip 5 are respectively provided with two water outlet ends, at this time, the left side and the right side of the bottom position of the side wall 1 are respectively and correspondingly provided with two longitudinal side wall drainage blind pipes 8, one water outlet end of the annular water-permeable blind pipe 4 and one water outlet end of the annular drainage plate strip 5 are communicated with the longitudinal side wall drainage blind pipe 8 on the left side, and the other water outlet end of the annular water-permeable blind pipe 4 and the other water outlet end of the annular drainage plate strip 5 are communicated with the longitudinal side wall drainage blind pipe 8 on the right side.

In the subway station drainage and prevention system of the embodiment, the bottom plate drainage and prevention system mainly comprises a longitudinal drainage blind pipe 9, a transverse drainage blind pipe 10, a drainage side ditch 13 and other parts.

The specific structures of the longitudinal side wall drainage blind pipe 8, the longitudinal drainage blind pipe 9 and the transverse drainage blind pipe 10 are not strictly limited and can be reasonably arranged according to actual needs. Specifically, as shown in fig. 11, a plurality of holes with a diameter not smaller than 10mm may be formed at intervals in the upper half portions of the longitudinal side wall drainage blind pipe 8, the longitudinal drainage blind pipe 9 and the transverse drainage blind pipe 10, and the non-woven fabric 11 is wrapped outside the longitudinal side wall drainage blind pipe 8, the longitudinal drainage blind pipe 9 and the transverse drainage blind pipe 10, so as to play a role in preventing blockage and filtering sand and stones.

Furthermore, as shown in fig. 9, a drainage layer 19 can be arranged at the bottom plate position, and the longitudinal drainage blind pipes 9 and the transverse drainage blind pipes 10 can be arranged in the drainage layer 19. The arrangement mode of the longitudinal drainage blind pipe 9 and the transverse drainage blind pipe 10 is not strictly limited; specifically, a plurality of longitudinal drainage blind pipes 9 can be uniformly arranged in the transverse direction at the bottom plate position, and a plurality of transverse drainage blind pipes 10 are arranged at intervals of 8-12m in the longitudinal direction at the bottom plate position. As shown in fig. 10, a plurality of longitudinal drain blind pipes 9 and a plurality of transverse drain blind pipes 10 may be connected and communicated by a multi-way device 14 (e.g., a cross-pipe, etc.).

Particularly, as shown in fig. 1, a plurality of pre-embedded grouting pipes 20 may be arranged at intervals at the positions of the side wall 1 and the arch wall 2, so as to perform grouting plugging at any time. Besides, the water collecting pits are arranged at the two ends of the station, the water outlet end of the drainage side ditch 13 is communicated with the water collecting pits, water in the drainage side ditch 13 is discharged into the water collecting pits at the two ends of the station, and finally concentrated pumping drainage is carried out. By establishing a plurality of defense lines in the above way, the problem that the construction of the main body of the station and the later operation safety are affected by the problem of water leakage can be effectively solved,

the construction method of the subway station waterproof and drainage system of the embodiment is as follows:

after the station primary support 18 is finished, the side wall 1 and arch wall 2 base surfaces are treated, waterproof layers (comprising a buffer layer 3 and a waterproof plate 15) of the side wall 1 and the arch wall 2 are arranged at the position of the side wall 1 which is 500mm above the drainage side ditch 13, the buffer layer 3 (such as non-woven fabric) is laid firstly, and the cement nails 21 and plastic gaskets 22 (such as plastic round gaskets) are adopted to be fixed on the required primary support 18 base surface. Arranging annular water permeable blind pipes 4 (such as phi 50 soft spring water permeable pipes), annular drainage plate strips 5 (such as 1mm thick, 150mm wide and concave-convex drainage plate strips) and transverse water guide pipes 6 (such as DN50PVC pipes) on the buffer layer 3 at intervals of 5 m; when the water quantity is larger, the annular water permeable blind pipe 4 and the annular drainage plate strip 5 can be arranged in an encrypted manner.

Applying a blind ditch inverted filter 7 in the bottom range of the side wall 1, arranging a longitudinal side wall drainage blind pipe 8 (such as DN100 double-wall corrugated pipe) in the inverted filter, slotting or punching the upper half part of the longitudinal side wall drainage blind pipe 8 (the aperture is not less than 10mm), wrapping a non-woven fabric 11 outside for protection, and playing the roles of preventing blockage and filtering sand and stone.

The annular permeable blind pipe 4 (such as a phi 50 soft spring permeable pipe), the transverse water guide pipe 6 (such as a DN50PVC pipe) and the longitudinal side wall drainage blind pipe 8 (such as a DN100 double-wall corrugated pipe) are connected through a multi-way device 14 (such as a three-way pipe and a four-way pipe), the longitudinal side wall drainage blind pipe 8 is grooved, and an annular drainage plate strip 5 (such as a concave-convex drainage plate strip with the thickness of 1mm and the width of 150 mm) is inserted; the side wall 1 and the arch wall 2 drain the groundwater to the longitudinal side wall drain blind pipe 8 through the annular permeable blind pipe 4 and the annular drain plate strip 5, then drain the groundwater into the two side drain side ditches 13 through the transverse water guide pipe 6 (such as DN50PVC pipe), and finally drain the groundwater to the two side water collecting pits collectively for concentrated pumping drainage.

After the station primary support 18 is completed, a water filtering layer 19 is constructed on the base of the station, three longitudinal drainage blind pipes 9 (such as DN100 double-wall corrugated pipes) are transversely equally and uniformly arranged in the water filtering layer 19, the transverse drainage blind pipes 10 (such as DN100 double-wall corrugated pipes) are arranged every 10m, the transverse gradient of the transverse drainage blind pipes 10 is 1%, the upper half parts of the longitudinal drainage blind pipes 9 and the transverse drainage blind pipes 10 are grooved or punched (the aperture is not less than 10mm), and the non-woven fabric 11 is wrapped outside for protection, so that the effects of preventing blockage and filtering sand are achieved. The longitudinal drainage blind pipe 9 and the transverse drainage blind pipe 10 are connected through a multi-way device 14; when the bottom plate cushion layer 12 is poured, the longitudinal drainage blind pipe 9 and the transverse drainage blind pipe 10 are firmly fixed. Drainage side ditches 13 are arranged on two sides of a station bottom plate, underground water possibly existing under a bottom plate cushion layer 12 is drained into the drainage side ditches 13 on the two sides through a longitudinal drainage blind pipe 9 and a transverse drainage blind pipe 10, and finally the underground water is collectively drained into water collection pits on the two sides for concentrated pumping drainage.

After the construction of the circumferential water permeable blind pipes 4 and the transverse water guide pipes 6 at the positions of the side walls 1 and the arch walls 2 is finished, the waterproof board 15 (such as the EVA waterproof board 15 with the thickness of 1.5 mm) is constructed, and the coiled material of the waterproof board 15 is welded on the plastic gasket 22 (such as a plastic circular gasket) by hot-melting through a hot air welding gun; at the initial position of the waterproof board 15 laying at the lower part of the side wall 1, the waterproof board 15 is folded by adopting an externally-attached water stop belt 16, and the cold self-adhesive waterproof coiled material 17 (such as a double-sided adhesive butyl rubber cold self-adhesive waterproof coiled material) is adhered and fixed with the waterproof board 15.

When the side wall 1 and the arch wall 2 of the station are constructed, grouting pipes 20 (a galvanized steel pipe with a ring and longitudinal distance of 4-5 m) are pre-buried for grouting and plugging in the later period.

The subway station drainage and water prevention system of the embodiment is characterized in that a waterproof plate 15 is arranged on the part of a station main structure except a bottom plate, a longitudinal drainage blind pipe 9 and a transverse drainage blind pipe 10 are arranged on the bottom plate, and a circumferential water permeable blind pipe 4, a longitudinal side wall drainage blind pipe 8 and a transverse water guide pipe 6 are arranged on a side wall 1 and an arch part, so that water can be drained into drainage side ditches 13 on two sides in time, then drained into water collecting pits at two ends of the station, and finally concentrated pumping drainage is carried out; in addition, through pre-buried slip casting pipe 20 in the structure, can carry out the slip casting leaking stoppage at any time, establish multichannel defence line, and then effectively solved the problem that the seepage water problem influences the main part construction of station and difficult problems such as later stage operation safety.

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

Claims (10)

1. A subway station waterproof and drainage system is characterized by comprising a side arch wall waterproof and drainage system and a bottom plate waterproof and drainage system, wherein the side arch wall waterproof and drainage system comprises a buffer layer arranged at the positions of a side wall and an arch wall and a waterproof plate arranged at one side of the back surface of the buffer layer, a plurality of annular water permeable blind pipes and a plurality of annular drain plate strips are arranged between the buffer layer and the waterproof plate at intervals along the longitudinal direction, a longitudinal side wall drainage blind pipe communicated with a plurality of annular water permeable blind pipes and the water outlet ends of a plurality of annular drainage plate strips is arranged at the bottom of the side wall, a plurality of transverse water guide pipes are arranged on the longitudinal side wall drainage blind pipes at intervals along the longitudinal direction, the bottom plate water-proof and drainage system comprises a plurality of longitudinal drainage blind pipes and a plurality of transverse drainage blind pipes which are arranged at the position of the bottom plate and are mutually communicated, and water outlet ends of the plurality of transverse water guide pipes and the plurality of transverse drainage blind pipes are respectively communicated with the drainage side ditch.

2. The subway station waterproof and drainage system as claimed in claim 1, wherein a plastic gasket is provided on the rear surface side of the buffer layer, the plastic gasket and the buffer layer are fixed on the primary support base surface by cement nails, and the waterproof plate is welded and fixed on the plastic gasket.

3. The subway station waterproof and drainage system as claimed in claim 1, wherein an externally attached water stop is provided at the position where the waterproof sheet is closed, and the externally attached water stop is adhered and fixed to the position where the waterproof sheet is closed by a cold self-adhesive waterproof roll.

4. The subway station waterproof and drainage system as claimed in claim 1, wherein a blind drain back filter is provided at the bottom of the side wall, and the longitudinal side wall drainage blind pipe is provided inside the blind drain back filter.

5. The subway station waterproof and drainage system as claimed in claim 1, wherein a plurality of holes with a diameter not less than 10mm are formed at intervals in the upper half of the longitudinal side wall drainage blind pipe, the longitudinal drainage blind pipe and the transverse drainage blind pipe, and non-woven fabrics are wrapped outside the longitudinal side wall drainage blind pipe, the longitudinal drainage blind pipe and the transverse drainage blind pipe.

6. A subway station waterproof and drainage system as claimed in claim 1, wherein a water filtering layer is provided at the bottom plate position, and a plurality of longitudinal drainage blind pipes and a plurality of transverse drainage blind pipes are provided in the water filtering layer.

7. The subway station waterproof and drainage system as claimed in claim 1, wherein a plurality of longitudinal drainage blind pipes are uniformly arranged in the transverse direction at the bottom plate position, and a plurality of transverse drainage blind pipes are arranged at intervals of 8-12m in the longitudinal direction at the bottom plate position.

8. The subway station waterproof and drainage system as claimed in claim 1, wherein a plurality of pre-buried grouting pipes are arranged at intervals at the positions of the side walls and the arch walls.

9. The subway station waterproof and drainage system as claimed in claim 1, wherein a water collecting pit is provided at each end of the station, and the water outlet end of the drainage side ditch is communicated with the water collecting pit.

10. The subway station waterproof and drainage system as claimed in claim 1, wherein said circumferential water permeable blind pipe is a soft spring water permeable pipe, said circumferential water draining plate is a concave-convex water draining plate, said longitudinal side wall water draining blind pipe, said longitudinal water draining blind pipe and said transverse water draining blind pipe are double-wall corrugated pipes, and said transverse water guiding pipe is a PVC pipe.

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