CN114439038A - Deep foundation pit underground indoor water drainage system and construction method - Google Patents
Deep foundation pit underground indoor water drainage system and construction method Download PDFInfo
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- CN114439038A CN114439038A CN202111576325.0A CN202111576325A CN114439038A CN 114439038 A CN114439038 A CN 114439038A CN 202111576325 A CN202111576325 A CN 202111576325A CN 114439038 A CN114439038 A CN 114439038A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D37/00—Repair of damaged foundations or foundation structures
Abstract
The invention relates to an indoor drainage system for a deep foundation pit and an underground chamber, which comprises a foundation slab, a structural floor slab and an outer wall, wherein semicircular PVC pipes are embedded along the internal corners of the foundation slab and the structural floor slab, and the semicircular PVC pipes at the upper layer and the lower layer are communicated through vertical PVC pipes; a horizontal hydrophobic plate is laid on the foundation bottom plate, terrace concrete is poured on the horizontal hydrophobic plate and the structural floor plate in the area outside the PVC pipes, and cement mortar is laid on the semicircular PVC pipes buried on the structural floor plate; and the outer wall is fixed with a vertical hydrophobic plate and a cement pressure plate at a drainage position, and other areas are coated with a painting layer. The invention also discloses a construction method of the indoor drainage system of the deep foundation pit and the underground chamber. According to the invention, the semicircular PVC pipes and the vertical PVC pipes are arranged around the structure by constructing the horizontal drainage plate, the vertical drainage plate and the cement pressure plate, so that the drainage smoothness of the whole drainage system is ensured, the leakage can be thoroughly solved, and the whole basement has no leakage points.
Description
Technical Field
The invention relates to an indoor drainage system for a deep foundation pit basement and a construction method, and belongs to the technical field of drainage for the deep foundation pit basement.
Background
In the prior art, basement waterproofing in deep foundation pit basement construction mainly depends on self-waterproofing of a structure and waterproofing of a waterproof material structure according to standard requirements. The construction of the deep foundation pit can not avoid leakage due to the reasons of poor quality, process and material characteristics of waterproof materials (coiled materials, waterproof concrete and the like), poor quality behaviors and quality consciousness of operation subcontracting and managers and the like. The reasons for the leakage of the basement of the deep foundation pit include: (1) the connection among the foundation slab, the structural slab surface, the column steel bars and the enclosing wall embedded steel bar connector seriously damages the waterproof coiled material; (2) the flatness of the inner side of the underground continuous wall is difficult to ensure, and the construction quality of the waterproof coiled material is difficult to ensure; (3) construction joints are generated due to process connection. After the basement of the deep foundation pit leaks, a grouting technology is usually adopted, the leakage is continuously stopped in the whole engineering period, the final effect is not ideal, and the grouting leakage stopping period even comprises the quality guarantee period. The technology is not only troublesome in construction, prolonged in construction period, but also high in cost. Therefore, the leakage cannot be completely solved by completely depending on the grouting technology after leakage, and the maintenance and quality guarantee period is longer.
Disclosure of Invention
The invention aims to solve the technical problem of providing an indoor drainage system for a deep foundation pit and an underground chamber, wherein a complete drainage system is constructed among an outer wall, a foundation slab and a structural floor slab, and finally, leaked water is intensively guided and drained to a basement water collecting well and is drained through forced drainage.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a deep foundation pit underground indoor drainage system comprises a foundation slab, a structural floor slab and an outer wall consisting of an underground continuous wall and a lining wall;
semicircular PVC pipes are embedded along the inner lining wall and the foundation bottom plate and at the inner corners where the inner lining wall is connected with the structural floor slab, a plurality of sleeves are embedded at intervals along the arrangement direction of the semicircular PVC pipes on the structural floor slab, and the semicircular PVC pipes on the upper layer and the lower layer are communicated through vertical PVC pipes connected with the embedded sleeves;
a horizontal hydrophobic plate covering the PVC pipes is laid on the foundation bottom plate, terrace concrete is poured on the horizontal hydrophobic plate and the structural floor plate in the region outside the PVC pipes, and cement mortar is laid on the semicircular PVC pipes buried on the structural floor plate;
the drainage device is characterized in that a vertical hydrophobic plate is fixed on the inner side of the inner lining wall at a drainage position, a cement pressure plate is fixed on the surface of the vertical hydrophobic plate, and a painting layer is coated on the area of the inner lining wall outside the vertical hydrophobic plate.
Further, the width of the vertical hydrophobic plate is 1000mm, and the thickness of the vertical hydrophobic plate is 10 mm.
Furthermore, the terrace concrete is divided into an upper layer and a lower layer, the lower layer is the non-reinforced fine stone concrete with the thickness of 80mm, and the upper construction surface layer is the reinforced concrete with the thickness of 120 mm.
Further, the spacing between adjacent sleeves is 30 m.
The invention also provides a construction method of the deep foundation pit underground indoor water drainage system, which comprises the following steps:
s1, before structure acceptance, performing waterproof treatment on the foundation slab and the outer wall by adopting self-adhesive waterproof rolls, so that leakage points of the foundation slab and the outer wall are concentrated at a plurality of point positions and a drainage position is determined, wherein the outer wall consists of an underground continuous wall and a lining wall;
s2, embedding semicircular PVC pipes at the internal corners connected with the lining wall by adhering to the foundation slab, and then paving a horizontal hydrophobic plate on the surface of the foundation slab and covering the semicircular PVC pipes;
s3, reserving the foundation wall within the range of L distance from the lining wall, and then pouring terrace concrete in other areas on the foundation bottom plate;
s4, embedding a plurality of sleeves at intervals along the arrangement direction of the semicircular PVC pipes on the structural floor slab, connecting vertical PVC pipes in the sleeves, sealing gaps between the semicircular PVC pipes and the sleeves, reserving the sleeves within a range of L distance from the lining wall without construction, and then pouring floor concrete in other areas of the structural floor slab;
s5, arranging a vertical hydrophobic plate at the drainage position, painting the area except the vertical hydrophobic plate, and then fixing a cement pressure plate on the surface of the vertical hydrophobic plate;
s6, embedding semicircular PVC pipes in the internal corners, which are connected with the structural floor slab by adhering to the lining wall, then arranging cement mortar on the semicircular PVC pipes for fixing the protection pipelines, and performing waterproof construction on the peripheries of the semicircular PVC pipes before arranging the semicircular PVC pipes;
s7, continuously observing the outer wall leakage treatment condition and the water flow dredging condition;
s8, observing that the outer wall has no leakage and the drainage is smooth, reserving the undeployed terrace for the contact bottom plate and the structural floor slab for filling, and adopting a decorative gypsum plate for sealing treatment in the later stage of decoration of the vertical PVC pipe.
Further, in step S3, the floor concrete on the foundation slab is poured and tamped layer by layer, and the lower layer is first constructed with non-reinforced fine stone concrete with the thickness of 80mm, so as to reduce the damage of personnel walking and steel bar laying to the drainage plate, and protect the drainage effect of the slab; after the lower layer concrete reaches a certain strength, the reinforced concrete with the thickness of 120mm on the surface layer is constructed.
Further, in step S4, the pitch of adjacent ferrules is 30 m.
Further, in step S5, the vertical hydrophobic plate and the cement pressure plate are fixed to the inner wall surface by fixing nails, and the peripheries of the fixing nails are treated by sealant.
Further, in step S5, the vertical hydrophobic plate has a width of 1000mm and a thickness of 10 mm.
The construction of the deep foundation pit underground indoor water drainage system can be summarized into two stages, namely a first stage: before the structure is checked and accepted, proper leakage stopping work is adopted for the foundation slab and the outer wall, and the outer wall leakage points are guaranteed to be concentrated at certain points. And a second stage: after the structure is checked and accepted, before the terrace concrete is cast and tamped, the vertical hydrophobic plate and the cement pressure plate are constructed at the concentrated point position of the outer wall leakage point at the stage, the horizontal hydrophobic plate is constructed on the foundation slab, and a completed drainage system is formed through the semicircular PVC pipe and the vertical PVC pipe which are arranged at the internal corner of the foundation slab and the internal corner of the structural floor slab, so that the leakage water is finally guided and discharged to the basement water collecting well in a concentrated mode and is discharged through forced discharge.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the deep foundation pit underground indoor drainage system, a drainage plate is constructed on a foundation bottom plate, and a vertical drainage plate and a cement pressure plate are constructed at a concentrated leakage point of a wall surface; semicircular PVC pipes and vertical PVC pipes are arranged around the structure, so that the drainage of the whole drainage system is smooth, and the leakage can be thoroughly solved, so that the whole basement has no leakage points.
2. Compared with the traditional method, the construction method is safe and reliable, and the traditional process needs uninterrupted maintenance and repair during the whole construction period; after the invention is adopted, the leakage can be thoroughly solved, and the technical scheme is more reliable.
3. The construction method only properly prevents water and leaks before the structure is checked and accepted, and the structure is mainly drained by the drainage system after being checked and accepted, so that the cost is saved by about 65 percent compared with the original method.
4. The construction method can improve the construction efficiency and shorten the construction and maintenance period by more than half.
Drawings
FIG. 1a is a schematic structural diagram of an indoor drainage system in a deep foundation pit according to the invention;
FIG. 1b is an enlarged schematic view at A in FIG. 1 a;
FIG. 2a is a construction schematic diagram of step S2 of the construction method of the indoor drainage system of the deep foundation pit, wherein 15 is a water collecting well;
FIG. 2B is a detailed view of the construction process at node B in FIG. 2 a.
FIG. 3a is a construction schematic diagram of step S3 of the construction method of the indoor drainage system of the deep foundation pit;
FIG. 3b is a detailed view of the construction process at node C in FIG. 3 a.
FIG. 4 is a detailed construction processing diagram of step S4 of the construction method of the indoor drainage system of the deep foundation pit;
FIG. 5a is a detailed processing diagram of the construction of the vertical hydrophobic plate in step S5 of the construction method of the indoor hydrophobic system of the deep foundation pit of the invention;
FIG. 5b is a detailed view of the cement pressure plate applied in step S5 of the construction method for the indoor drainage system of the deep foundation pit;
FIG. 6 is a construction schematic diagram of step S6 of the construction method of the indoor drainage system of the deep foundation pit;
FIG. 7 is a construction schematic diagram of step S7 of the construction method of the indoor drainage system of the deep foundation pit;
fig. 8 is a construction schematic diagram of step S8 of the construction method of the indoor drainage system of the deep foundation pit.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples. The objects, aspects and advantages of the present invention will become more apparent from the following description. It should be understood that the described embodiments are preferred embodiments of the invention, and not all embodiments.
Referring to fig. 1a and 1b, the deep foundation pit indoor drainage system comprises a foundation slab 12, a structural floor 8 and an outer wall, wherein the outer wall is composed of an underground continuous wall 13 and an inner lining wall 14. Semicircular PVC pipes 6 are embedded horizontally along the internal corners where the internal lining wall 14 is connected with the foundation slab 12 and the internal lining wall 14 is connected with the structural floor slab 8, one sleeve 9 is embedded on the structural floor slab 8 at intervals of 30m along the arrangement direction of the semicircular PVC pipes 6, and the upper semicircular PVC pipe 6 and the lower semicircular PVC pipe 6 are communicated through vertical PVC pipes 10 connected with the embedded sleeves 9. The PVC pipe-laying construction method is characterized in that a horizontal hydrophobic plate 11 covering the PVC pipe 6 is laid on the foundation bottom plate 12, terrace concrete 7 is poured on the horizontal hydrophobic plate 11 and the structural floor slab 8 in the region outside the PVC pipe, the terrace concrete 7 is divided into an upper layer and a lower layer, the lower layer is non-reinforced fine stone concrete with the thickness of 80mm, and the construction surface layer is reinforced concrete with the thickness of 120 mm. Cement mortar 5 is laid on semicircular PVC pipes 6 buried in the structural floor 8. Referring to fig. 5a and 5b, a vertical hydrophobic plate 2 with a width of 1000mm and a thickness of 10mm is fixed on the inner side of the inner lining wall 14 at a drainage position, a cement pressure plate 3 is fixed on the surface of the vertical hydrophobic plate 2, and a plastering layer 4 is coated on the inner lining wall 14 outside the vertical hydrophobic plate 2.
The invention also discloses a construction method of the deep foundation pit underground indoor water drainage system, which comprises the following steps:
s1, before structure acceptance, performing waterproof treatment on the foundation slab and the outer wall by using self-adhesive waterproof rolls, so that leakage points of the foundation slab and the outer wall are concentrated at a plurality of point positions and the drainage position is determined;
the foundation slab is waterproof by adopting a non-asphalt pre-paved high-molecular self-adhesive waterproof coiled material with the thickness of 1.5mm, and the construction part is between the bottom of the slab and the cushion layer; the exterior wall is waterproof by adopting a non-asphalt wet-laid high-molecular self-adhesive waterproof coiled material with the thickness of 1.5mm and 1.5mm, and the construction position is between the underground continuous wall 13 and the inner lining wall 14.
S2, burying a semicircular PVC pipe 6 at the internal corner where the base plate 12 is connected with the lining wall 14, and then paving a horizontal hydrophobic plate 11 on the surface of the base plate and covering the semicircular PVC pipe 6 (refer to fig. 2a and 2 b);
s3, reserving and not constructing the foundation in a range with the distance L from the length of the lining wall, and then pouring terrace concrete 7 in other areas on the foundation slab (refer to fig. 3a and 3 b);
s4, embedding a plurality of sleeves 9 at intervals along the arrangement direction of the semicircular PVC pipes 6 on the structural floor slab 8, then connecting vertical PVC pipes 10 in the sleeves 9, sealing gaps between the semicircular PVC pipes and the sleeves, reserving a range with a distance of L from a lining wall without construction, and then pouring terrace concrete 7 (refer to figure 4) in other areas of the structural floor slab;
s5, arranging the vertical hydrophobic plate 2 at the drainage position, painting the area outside the vertical hydrophobic plate 2, sealing and waterproofing the junction of the vertical hydrophobic plate and the painting layer 4, and then fixing a cement pressure plate 3 on the surface of the vertical hydrophobic plate (refer to fig. 5a and 5 b);
s6, burying a semicircular PVC pipe 6 at the internal corner where the inner lining wall 14 is connected with the structural floor slab 8, then arranging cement mortar 5 on the semicircular PVC pipe for fixing a protection pipeline, and performing waterproof construction on the periphery of the semicircular PVC pipe (refer to figure 6) before arranging the semicircular PVC pipe 6;
s7, continuously observing the outer wall leakage treatment condition and the water flow dredging condition (refer to FIG. 7, wherein the arrow indicates the flow direction of the water flow);
s8, observing that the outer wall has no leakage and the drainage is smooth, filling up the un-constructed terrace reserved on the contact bottom plate and the structural floor slab, and adopting decorative gypsum board to seal and treat in the later stage of decoration of the vertical PVC pipe (refer to figure 8).
According to the deep foundation pit underground indoor drainage system, a drainage plate is constructed on a foundation bottom plate, and a vertical drainage plate and a cement pressure plate are constructed at a concentrated leakage point of a wall surface; semicircular PVC pipes and vertical PVC pipes are arranged around the structure, so that the drainage of the whole drainage system is smooth, and the leakage can be thoroughly solved, so that the whole basement has no leakage points. The construction method only properly prevents water and leaks before the structure is checked and accepted, and the drainage system is mainly used for draining water after the structure is checked and accepted, so that the cost is saved by about 65 percent compared with the original method.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, and it is obvious that any person skilled in the art can easily conceive of alternative or modified embodiments based on the above embodiments and these should be covered by the present invention.
Claims (9)
1. The utility model provides an indoor drainage system in deep basal pit basement which characterized in that:
the underground continuous wall comprises a foundation bottom plate, a structural floor slab and an outer wall formed by an underground continuous wall and a lining wall;
semicircular PVC pipes are embedded along the inner lining wall and the foundation bottom plate and at the inner corners where the inner lining wall is connected with the structural floor slab, a plurality of sleeves are embedded at intervals along the arrangement direction of the semicircular PVC pipes on the structural floor slab, and the semicircular PVC pipes on the upper layer and the lower layer are communicated through vertical PVC pipes connected with the embedded sleeves;
a horizontal hydrophobic plate covering the PVC pipes is laid on the foundation bottom plate, terrace concrete is poured on the horizontal hydrophobic plate and the structural floor plate in the region outside the PVC pipes, and cement mortar is laid on the semicircular PVC pipes buried on the structural floor plate;
the drainage device is characterized in that a vertical hydrophobic plate is fixed on the inner side of the inner lining wall at a drainage position, a cement pressure plate is fixed on the surface of the vertical hydrophobic plate, and a painting layer is coated on the area of the inner lining wall outside the vertical hydrophobic plate.
2. The deep foundation pit and underground chamber water drainage system according to claim 1, wherein:
the width of the vertical hydrophobic plate is 1000mm, and the thickness of the vertical hydrophobic plate is 10 mm.
3. The deep foundation pit and underground chamber water drainage system according to claim 1, wherein:
the terrace concrete is divided into an upper layer and a lower layer, the lower layer is the non-reinforced fine stone concrete with the thickness of 80mm, and the upper construction surface layer is the reinforced concrete with the thickness of 120 mm.
4. The deep foundation pit and underground chamber water drainage system according to claim 1, wherein:
the spacing between adjacent sleeves was 30 m.
5. A construction method of an indoor drainage system in a deep foundation pit is characterized by comprising the following steps:
s1, before structure acceptance, performing waterproof treatment on the foundation slab and the outer wall by adopting self-adhesive waterproof rolls, so that leakage points of the foundation slab and the outer wall are concentrated at a plurality of point positions and a drainage position is determined, wherein the outer wall consists of an underground continuous wall and an inner lining wall;
s2, embedding semicircular PVC pipes at the internal corners connected with the lining wall by adhering to the foundation slab, and then paving a horizontal hydrophobic plate on the surface of the foundation slab and covering the semicircular PVC pipes;
s3, reserving the foundation wall within the range of L distance from the lining wall, and then pouring terrace concrete in other areas on the foundation bottom plate;
s4, embedding a plurality of sleeves at intervals along the arrangement direction of the semicircular PVC pipes on the structural floor slab, connecting vertical PVC pipes in the sleeves, sealing gaps between the semicircular PVC pipes and the sleeves, reserving the sleeves within a range of L distance from the lining wall without construction, and then pouring floor concrete in other areas of the structural floor slab;
s5, arranging a vertical hydrophobic plate at the drainage position, painting the area except the vertical hydrophobic plate, and fixing a cement pressure plate on the surface of the vertical hydrophobic plate;
s6, embedding semicircular PVC pipes in the internal corners, which are connected with the structural floor slab by adhering to the lining wall, then arranging cement mortar on the semicircular PVC pipes for fixing the protection pipelines, and performing waterproof construction on the peripheries of the semicircular PVC pipes before arranging the semicircular PVC pipes;
s7, continuously observing the outer wall leakage treatment condition and the water flow dredging condition;
s8, observing that the outer wall has no leakage and the drainage is smooth, reserving the undeployed terrace for the contact bottom plate and the structural floor slab for filling, and adopting a decorative gypsum plate for sealing treatment in the later stage of decoration of the vertical PVC pipe.
6. The construction method of the indoor water drainage system in the deep foundation pit and the underground pit as claimed in claim 5, wherein:
in step S3, the floor concrete on the foundation slab is poured and tamped layer by layer, and the lower layer is first constructed with non-reinforced fine stone concrete with the thickness of 80mm, so as to reduce the damage of the walking of personnel and the laying of steel bars to the drainage plate, and protect the drainage effect of the slab; after the lower layer concrete reaches a certain strength, the reinforced concrete with the thickness of 120mm on the surface layer is constructed.
7. The construction method of the indoor water drainage system in the deep foundation pit and the underground pit as claimed in claim 5, wherein:
in step S4, the pitch of adjacent ferrules is 30 m.
8. The construction method of the indoor water drainage system in the deep foundation pit and the underground pit as claimed in claim 5, wherein:
in step S5, the vertical hydrophobic plate and the cement pressure plate are fixed to the inner wall surface by fixing nails, and the peripheries of the fixing nails are treated by sealant.
9. The construction method of the deep foundation pit and underground chamber water-repellent system according to claim 5, wherein:
in step S5, the vertical hydrophobic plate has a width of 1000mm and a thickness of 10 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111576325.0A CN114439038A (en) | 2021-12-22 | 2021-12-22 | Deep foundation pit underground indoor water drainage system and construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111576325.0A CN114439038A (en) | 2021-12-22 | 2021-12-22 | Deep foundation pit underground indoor water drainage system and construction method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06185088A (en) * | 1992-12-17 | 1994-07-05 | Kajima Corp | Underground foundation structure and construction |
| CN201254732Y (en) * | 2008-09-10 | 2009-06-10 | 中国建筑第四工程局有限公司 | Prevention and training combined water proofing system for basement |
| CN103821181A (en) * | 2014-02-28 | 2014-05-28 | 中天建设集团有限公司 | Basement bottom plate water drainage layer construction method |
| CN104234089A (en) * | 2014-08-21 | 2014-12-24 | 中国十七冶集团有限公司 | Construction method for waterproof and water-draining combination of basement |
| CN104988955A (en) * | 2015-06-11 | 2015-10-21 | 中建一局集团第六建筑有限公司 | Anti-drainage combined waterproof system for super-deep basements, and construction method |
| CN111779157A (en) * | 2020-07-21 | 2020-10-16 | 中国建筑第八工程局有限公司 | Underground outdoor wall structure and construction method thereof |
-
2021
- 2021-12-22 CN CN202111576325.0A patent/CN114439038A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06185088A (en) * | 1992-12-17 | 1994-07-05 | Kajima Corp | Underground foundation structure and construction |
| CN201254732Y (en) * | 2008-09-10 | 2009-06-10 | 中国建筑第四工程局有限公司 | Prevention and training combined water proofing system for basement |
| CN103821181A (en) * | 2014-02-28 | 2014-05-28 | 中天建设集团有限公司 | Basement bottom plate water drainage layer construction method |
| CN104234089A (en) * | 2014-08-21 | 2014-12-24 | 中国十七冶集团有限公司 | Construction method for waterproof and water-draining combination of basement |
| CN104988955A (en) * | 2015-06-11 | 2015-10-21 | 中建一局集团第六建筑有限公司 | Anti-drainage combined waterproof system for super-deep basements, and construction method |
| CN111779157A (en) * | 2020-07-21 | 2020-10-16 | 中国建筑第八工程局有限公司 | Underground outdoor wall structure and construction method thereof |
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