CN215715592U - Long-path multilayer row limiting device for underground engineering high water head - Google Patents
Long-path multilayer row limiting device for underground engineering high water head Download PDFInfo
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- CN215715592U CN215715592U CN202121749115.2U CN202121749115U CN215715592U CN 215715592 U CN215715592 U CN 215715592U CN 202121749115 U CN202121749115 U CN 202121749115U CN 215715592 U CN215715592 U CN 215715592U
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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
- E02D31/10—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 soil pressure or hydraulic pressure
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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
- E02D31/002—Ground foundation measures for protecting the soil or subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/004—Sealing liners
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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Abstract
The utility model discloses a long-path multilayer limited drainage device for a high water head of underground engineering, which comprises a limited drainage pipe network system and a water collection structure; the limited drainage pipe network system comprises a vertical drainage pipe, a transverse drainage pipe and an oblique drainage pipe; the water collecting structure comprises a graded broken stone filter layer and a longitudinal water permeable blind pipe; the underground main structure side wall is externally provided with graded broken stone filter layers at fixed intervals, each graded broken stone filter layer is internally provided with a longitudinal water permeable blind pipe, two adjacent longitudinal water permeable blind pipes are connected through a multi-section inclined flow guide pipe, the longitudinal water permeable blind pipe at the bottom layer is connected with the tops of a plurality of vertical water discharge pipes, and the bottom of each vertical water discharge pipe is connected with a corresponding transverse water discharge pipe. The device can quickly and effectively reduce the external water purification pressure of the underground structure and weaken the adverse effect of a high water head on the underground structure.
Description
Technical Field
The utility model belongs to the technical field of underground engineering row limiting, and particularly relates to a long-path multi-layer row limiting device for an underground engineering high water head.
Background
With the increasing demand of urban traffic, the development and utilization of underground space become a new trend of traffic development in China, so that the construction of urban underground engineering is increased correspondingly. In a seaside city, the underground water level is high, and the high water head can have adverse effects on the underground engineering structure of the city. At present, two solutions of full drainage and full blockage are mainly provided for high water heads. The full-discharge scheme can reduce water pressure and reduce the adverse effect of external water pressure on the underground main body structure, but easily causes water damage, destroys water environment balance and brings environmental problems (adverse effect caused by underground water distribution disorder); the full-blocking scheme can avoid water environment damage, but can lead to the underground main structure to bear high water pressure, needs to adopt the water pressure resistant lining, and it has increased the construction cost to probably break because of durability reduces and leads to the underground main structure bearing capacity not enough in the long-term operation process. Therefore, the limited discharge scheme which gives consideration to both precipitation pressure relief and water environment balance has important significance.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model aims to provide a long-path multilayer drainage limiting device for high water heads of underground engineering, which can quickly and effectively reduce the external water purification pressure of an underground structure and weaken the adverse effect of the high water heads on the underground structure when urban underground engineering is built in an area with higher underground water level.
In order to achieve the purpose, the technical scheme of the application is as follows: a long-path multi-layer limited drainage device for a high water head of underground engineering comprises a limited drainage pipe network system and a water collection structure; the limited drainage pipe network system comprises a vertical drainage pipe, a transverse drainage pipe and an oblique drainage pipe; the water collecting structure comprises a graded broken stone filter layer and a longitudinal water permeable blind pipe; the underground main structure side wall is externally provided with graded broken stone filter layers at fixed intervals, each graded broken stone filter layer is internally provided with a longitudinal water permeable blind pipe, two adjacent longitudinal water permeable blind pipes are connected through a multi-section inclined flow guide pipe, the longitudinal water permeable blind pipe at the bottom layer is connected with the tops of a plurality of vertical water discharge pipes, and the bottom of each vertical water discharge pipe is connected with a corresponding transverse water discharge pipe.
Furthermore, the periphery of the longitudinal permeable blind pipe is wrapped with a nylon membrane filter layer.
Furthermore, each transverse drainage pipe is provided with an electric pressure valve connected with the controller, and a drainage groove is arranged below the end part of each transverse drainage pipe.
Furthermore, each section of the inclined flow guide pipe is provided with a terminal valve connected with the controller.
Furthermore, a water pressure sensor connected with the controller is arranged in a stratum beside the underground main body structure, and the water pressure sensors are respectively positioned between adjacent graded broken stone filter layers and used for sensing the pore water pressure in the nearby soil body.
Furthermore, the terminal valve on each section of the inclined flow guide pipe is arranged at the same height as the water pressure sensor corresponding to the layer.
Furthermore, the water outlets of the longitudinal water-permeable blind pipes on the odd layers are positioned on a virtual vertical line a, the water outlets of the longitudinal water-permeable blind pipes on the even layers are positioned on a virtual vertical line b, and the virtual vertical lines a and the virtual vertical lines b are alternately arranged, so that the longitudinal water-permeable blind pipes and the inclined flow guide pipes are in a grid shape.
Furthermore, a water-resisting layer is arranged between the side wall of the underground main body structure and each graded broken stone filtering layer.
As a further step, the diameter of the oblique draft tube of each layer is increased proportionally to the increase of the depth.
As a further aspect, the maximum water discharge amount of the long-path multi-layer limited discharge device for the high water head of the underground engineering is as follows:
wherein Q is the flow, n is the roughness of the inner wall of the pipe, v is the flow velocity, lambda is the drag coefficient, g is the gravitational acceleration, djIs the full pipe mean diameter.
Due to the adoption of the technical scheme, the utility model can obtain the following technical effects: this device can effectively reduce the outside water purification pressure of underground structure, weakens the adverse effect that high water head produced to underground structure, optimizes structure atress system, reduces the structure size, solves anti floating difficult problem, reduces the engineering investment, and the implementation of the device can ensure that the engineering compromises precipitation pressure release function and water environment protection balance function, is fit for extensive popularization and application.
Drawings
FIG. 1 is a longitudinal cross-sectional view of an underground construction;
FIG. 2 is a cross-sectional view taken at I-I of FIG. 1;
FIG. 3 is an enlarged view of the structure at A in FIG. 1;
fig. 4 is an enlarged schematic view of the structure at B in fig. 1.
The sequence numbers in the figures illustrate: 1-underground body structures; 2-a building enclosure; 3-longitudinal permeable blind pipe; 4-oblique honeycomb duct; 5-a transverse drain pipe; 6-an electric pressure valve; 7-graded broken stone filter layer; 8-nylon membrane filter layer; 9-water permeable holes; 10-a water barrier layer; 11-vertical drain pipes; 12-a drainage channel; 13-a terminal valve; 14-water pressure sensor; 15-a controller.
Detailed Description
The embodiments of the present invention are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
The present embodiment provides a long-path multi-layer row limiting device for high water head of underground engineering, as shown in fig. 1-4, it should be noted that the drawings of the present invention are all in a very simplified form and all use non-precise proportions, which are only used for the purpose of conveniently and clearly assisting the description of the embodiment of the present invention, and are not intended to limit the practical limitations of the present invention. Any modification of the structure, change of the ratio or adjustment of the size of the structure should fall within the scope of the present disclosure without affecting the effect and the purpose of the present disclosure.
A long path multi-deck limited drain device for high head underground works comprising: a limited amount of drainage piping system, catchment structures, drainage channels 12. The limited drainage pipe network system comprises a vertical drainage pipe 11, a transverse drainage pipe (made of PVC) 5, an inclined drainage pipe 4, a terminal valve 13, a water pressure sensor 14, a controller 15 and an electric pressure valve 6, wherein the controller can be a PLC (programmable logic controller) which can be adjusted according to actual use effects and is installed in a control box. The water collecting structure comprises a graded broken stone filter layer 7, a longitudinal water permeable blind pipe 3 and a nylon membrane filter layer 8, and the graded broken stone filter layer is embedded on the building envelope 2. A graded broken stone filtering layer 7 is arranged outside the side wall of the underground main body structure 1 according to a fixed spacing distance, and the graded broken stone filtering layer 7 is used for concentrating underground water; after water is collected by the graded broken stone filter layers 7 with various depths, water enters the longitudinal permeable pipe 3 through the nylon membrane filter layer 8 and enters the vertical water drainage pipe 11 at the bottom through the inclined flow guide pipe 4; the water pressure sensor 14 senses the pore water pressure in the nearby soil body, and the controller 15 controls the underground water in the inclined draft tube to flow through the terminal valve 13; and then the water enters a transverse water discharge pipe 5, when the electric pressure valve 6 reaches a set water pressure critical value, the electric pressure valve 6 is opened to start water discharge, concentrated water is discharged into a water discharge groove 12 until the water pressure is reduced to the critical value, and the electric pressure valve 6 is closed to realize multi-level limited water discharge.
The following are preferred embodiments of the present invention:
outside the side wall of the underground main structure 1, from 1/4H (H is the height of the side wall of the structure), the graded crushed stone filter layer 7 is arranged according to the fixed spacing distance of about 1/5H (when 1/5H is more than 10m, the fixed spacing distance is 10m), the width of the graded crushed stone filter layer 7 can be about 1500mm, and the graded crushed stone filter layer is ensured to effectively concentrate underground water in nearby soil bodies and temporarily store the underground water.
The nylon membrane filter layer 8 wraps the longitudinal permeable blind pipe 3 to prevent the blind pipe from being blocked. The graded broken stone filter layers 7 of all depths collect water, underground water is filtered by the nylon membrane filter layers 8, then enters the longitudinal water permeable blind pipes 3 from the water permeable holes, one water permeable hole is arranged at every 45 degrees along the section circumference of the longitudinal water permeable blind pipes 3, and the diameter of the water permeable holes and the density of longitudinal arrangement are determined according to the buried depth.
Two adjacent longitudinal permeable blind pipes are connected through a plurality of sections of inclined flow guide pipes to form a grid structure; the diameter of the inclined draft tube 4 is increased proportionally according to the increase of the depth from top to bottom, and the diameter of each layer is the same. Water enters the middle-layer longitudinal permeable blind pipe and the middle-layer oblique flow guide pipe from the top-layer longitudinal permeable blind pipe 3 through the upper-layer oblique flow guide pipe 4 due to gravity, finally enters the vertical water discharge pipe 11 through the bottom-layer longitudinal permeable blind pipe, and the diameters of the oblique flow guide pipe and the vertical water discharge pipe meet the requirement of water discharge in the underground structure full-discharge mode.
The underground structure full drainage mode drainage rate is obtained by the following equation:
wherein Q is the flow, n is the roughness of the inner wall of the pipe, v is the flow velocity, and λ is the resistanceCoefficient, g is gravitational acceleration, djIs the full pipe mean diameter.
The controller 15 controls the opening and closing of the terminal valve 13 through the pore water pressure detected by the water pressure sensor in real time, and stores the water pressure value in the historical steady-state environment of each depth. When the current pore water pressure in the soil body is greater than the historical steady-state water pressure value, the controller 15 controls the terminal valve 13 on the layer to be opened completely, and underground water in the oblique flow guide pipe flows; when the current pore water pressure in the soil body is less than or equal to the historical steady-state water pressure value, the controller 15 controls the terminal valve 13 on the layer to be closed, and the underground water in the oblique guide pipe stops flowing.
The groundwater enters the transverse drain pipe 5, when the electric pressure valve 6 reaches the set water pressure critical value, the opening is carried out, the water drainage is started, the concentrated water is drained into the drain tank 12, until the water pressure is reduced to the critical value, and the electric pressure valve 6 is closed.
When the ground water level rose, the multilayer level long path row device of limiting a quantity of this application got into operating condition, has set up the multilayer water collection structure and has realized inside long path seepage flow, can be fast effectively multilayer level drainage of limiting a quantity of for clear up of secret high head can maintain the water environmental stability of underground structure again, realizes compromising precipitation pressure release and maintains the balanced effect of water environmental.
The embodiments of the present invention are illustrative, but not restrictive, of the utility model in any manner. The technical features or combinations of technical features described in the embodiments of the present invention should not be considered as being isolated, and they may be combined with each other to achieve a better technical effect. The scope of the preferred embodiments of the present invention may also include additional implementations, and should be understood by those skilled in the art to which the embodiments of the utility model pertain.
Claims (9)
1. A long-path multi-layer limited drainage device for a high water head of underground engineering is characterized by comprising a limited drainage pipe network system and a water collection structure; the limited drainage pipe network system comprises a vertical drainage pipe, a transverse drainage pipe and an oblique drainage pipe; the water collecting structure comprises a graded broken stone filter layer and a longitudinal water permeable blind pipe; the underground main structure side wall is externally provided with graded broken stone filter layers at fixed intervals, each graded broken stone filter layer is internally provided with a longitudinal water permeable blind pipe, two adjacent longitudinal water permeable blind pipes are connected through a multi-section inclined flow guide pipe, the longitudinal water permeable blind pipe at the bottom layer is connected with the tops of a plurality of vertical water discharge pipes, and the bottom of each vertical water discharge pipe is connected with a corresponding transverse water discharge pipe.
2. The long path multi-layer row limiting device for the high water head of the underground engineering as claimed in claim 1, wherein the longitudinal water permeable blind pipe is wrapped with a nylon membrane filter layer.
3. The long path multi-layer drainage limiting device for high water heads of underground works as claimed in claim 1, wherein each of the transverse drainage pipes is provided with an electric pressure valve connected with a controller, and a drainage groove is arranged below the end part of the transverse drainage pipe.
4. The long-path multi-layer drainage limiting device for high water heads of underground engineering as claimed in claim 1, wherein each segment of the oblique draft tube is provided with a terminal valve connected with the controller.
5. The long-path multilayer drainage limiting device for the high water head of the underground engineering as claimed in claim 1, wherein a water pressure sensor connected with a controller is arranged in the stratum beside the underground main body structure, and the water pressure sensors are respectively positioned between adjacent graded crushed stone filter layers and used for sensing the pore water pressure in the soil body nearby.
6. The long-path multi-layer drainage limiting device for the underground engineering high water head as claimed in claim 4 or 5, wherein the terminal valve of each inclined flow guide pipe is arranged at the same height as the water pressure sensor corresponding to the layer.
7. The long-path multi-layer row limiting device for the high water head of the underground engineering according to claim 1, wherein water outlets of the longitudinal water-permeable blind pipes of the odd-numbered layers are positioned on a virtual vertical line a, water outlets of the longitudinal water-permeable blind pipes of the even-numbered layers are positioned on a virtual vertical line b, and the virtual vertical line a and the virtual vertical line b are alternately arranged to enable the longitudinal water-permeable blind pipes and the inclined flow guide pipe to be in a grid shape.
8. The long-path multi-layer row limiting device for the underground engineering high water head as claimed in claim 1, wherein a water barrier is arranged between the side wall of the underground main structure and each graded crushed stone filter layer.
9. The long path multi-layer drainage limiting device for high water head of underground engineering as claimed in claim 1, wherein the diameter of the inclined draft tube of each layer is increased proportionally to the increase of the depth.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN2021105017403 | 2021-05-08 | ||
| CN202110501740 | 2021-05-08 |
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| CN215715592U true CN215715592U (en) | 2022-02-01 |
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| CN202121749115.2U Active CN215715592U (en) | 2021-05-08 | 2021-07-29 | Long-path multilayer row limiting device for underground engineering high water head |
| CN202110866138.XA Active CN113622468B (en) | 2021-05-08 | 2021-07-29 | Multi-layer-level long path quantity-limiting discharging device suitable for underground engineering |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101126242A (en) * | 2006-08-16 | 2008-02-20 | 张骐 | Method and system for controlling water-level for underground building |
| CN103510528B (en) * | 2012-06-29 | 2015-09-02 | 深圳市工勘岩土工程有限公司 | For the blind drainage structure of underground structure anti-floating |
| CN105625448A (en) * | 2014-10-31 | 2016-06-01 | 龚展宇 | Underground water drainage method and device for underground building |
| CN104480953B (en) * | 2014-12-12 | 2016-08-24 | 中交第一公路勘察设计研究院有限公司 | Catchment in Permafrost Area, water guide and the roadbed side slope drainage system of infiltration |
| CN104532865A (en) * | 2014-12-16 | 2015-04-22 | 中启胶建集团有限公司 | Underground blind ditch and permanent water-collecting well comprehensive dewatering system applied to basement |
| CN209353360U (en) * | 2018-11-26 | 2019-09-06 | 中国建筑第八工程局有限公司 | The anti-floating drainage arrangement of basement structure |
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| CN113622468A (en) | 2021-11-09 |
| CN113622468B (en) | 2023-02-28 |
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