CN110847959A - Deep drainage regulation tunnel prevents that silt is long-pending and is convenient for mechanical section of dredging - Google Patents

Deep drainage regulation tunnel prevents that silt is long-pending and is convenient for mechanical section of dredging Download PDF

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Publication number
CN110847959A
CN110847959A CN201911032272.9A CN201911032272A CN110847959A CN 110847959 A CN110847959 A CN 110847959A CN 201911032272 A CN201911032272 A CN 201911032272A CN 110847959 A CN110847959 A CN 110847959A
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CN
China
Prior art keywords
tunnel
dredging
deep drainage
deep
mechanical
Prior art date
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Pending
Application number
CN201911032272.9A
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Chinese (zh)
Inventor
汉京超
张辰
沈庞勇
曹晶
王晓鹏
徐文征
顾贇
周娟娟
王碧波
李鹏程
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai City Water Supply Project Management Co Ltd
Shanghai Municipal Engineering Design Insitute Group Co Ltd
Original Assignee
Shanghai City Water Supply Project Management Co Ltd
Shanghai Municipal Engineering Design Insitute Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai City Water Supply Project Management Co Ltd, Shanghai Municipal Engineering Design Insitute Group Co Ltd filed Critical Shanghai City Water Supply Project Management Co Ltd
Priority to CN201911032272.9A priority Critical patent/CN110847959A/en
Publication of CN110847959A publication Critical patent/CN110847959A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F16/00Drainage
    • E21F16/02Drainage of tunnels

Abstract

The present invention relates to: the utility model provides a deep drainage regulation tunnel prevents that silt is long-pending mechanical clear section of dredging of being convenient for, includes its characterized in that of deep drainage regulation tunnel section: the deep drainage storage tunnel section comprises a concrete platform arranged at the bottom of the tunnel, a diversion trench in the middle of the platform and a wiring pipe embedded in the platform. The invention conforms to the development and application trend of deep drainage storage tunnels, fully considers the dredging difficulty brought by ultra-deep tunnels, has the characteristics of siltation prevention, convenience for mechanical dredging and the like, creates good conditions for hydraulic self-cleaning and mechanical dredging (dredging vehicles and the like), embodies the technical characteristics of high efficiency, clear process, simple structure and convenience for operation and maintenance, can reduce the operation and maintenance difficulty of the deep drainage storage tunnels, improve the mechanical operation level and reduce the labor intensity of operators, and is suitable for being applied to large deep drainage storage tunnels.

Description

Deep drainage regulation tunnel prevents that silt is long-pending and is convenient for mechanical section of dredging
Technical Field
The invention relates to the technical field of deep drainage storage regulating tunnels related to municipal engineering and environmental protection engineering, in particular to a siltation prevention section convenient for mechanical clearing of a deep drainage storage regulating tunnel.
Background
Serious inland inundation disasters cause huge economic losses to cities, and for super-huge cities, central urban areas are developed economically, densely populated, crowded in traffic, short in land and largely developed in underground space, so that large-scale overturning and reconstruction of the current rainwater pipe network are not practical. The gradual maturity and the wide application of the deep drainage storage and regulation tunnel technology provide an effective solution for solving the problem of the current drainage system.
However, due to the characteristics of "buried depth" and "large scale" of the deep drainage storage tunnel, great difficulty is caused to daily cleaning and maintenance of the tunnel, and the characteristics are specifically shown as follows: 1) the diameter of the section is large, and the flow speed is slow when the water quantity is small, so that particulate matters are easy to deposit; 2) once siltation is generated, the workload of desilting is large, and the traditional manual cleaning or small-sized scouring and dredging equipment is not suitable; 3) in an ultra-deep underground delicate closed environment, personnel are inconvenient to enter and exit, the working environment is poor, the sediment is inconvenient to transport, the mechanization level needs to be improved as much as possible, and the working time of the personnel is reduced; 4) the mechanical cleaning and maintenance needs certain power supply and communication requirements, and meanwhile, the daily monitoring and operation of the tunnel also has the power supply and communication requirements. For the above problems, the current domestic and foreign deep tunnel engineering cases are generally relieved mainly by adjusting the operation mode, adopting pretreatment to reduce the sediment entering the deep tunnel, performing partial flushing by means of tunnel inflow and other measures, and there are few cases of adopting targeted adjustment and optimized design aiming at the tunnel section form.
Therefore, it is necessary to research the section form of the deep drainage storage tunnel which is easy to clean mechanically and can prevent siltation.
Disclosure of Invention
The invention aims to provide a siltation prevention section of a deep drainage storage tunnel, which is convenient for mechanical clearing, and solves the problems of easy siltation and difficult cleaning caused by deep burial and large scale of the deep storage tunnel.
In order to achieve the purpose, the technical scheme of the invention is as follows: the utility model provides a deep drainage regulation tunnel prevents that silt is long-pending mechanical clear section of dredging of being convenient for, includes deep drainage regulation tunnel section, its characterized in that: the deep drainage regulation tunnel section be equipped with the guiding gutter including setting up the concrete platform in the tunnel bottom in the middle of the concrete platform, the inside pre-buried wiring pipe that has of concrete platform.
The inner diameter of the tunnel meets the space requirement of the dredging vehicle for entering and exiting, and is more than or equal to 6 m; the two sides of the concrete platform arranged at the bottom are respectively provided with a certain width so as to facilitate the running of a dredging vehicle, and the width of one side is more than or equal to 1 m.
The concrete platform arranged at the bottom inclines towards the middle diversion trench according to a certain gradient, and the gradient is generally within the range of 1-3%; the diversion trench arranged in the middle of the bottom concrete platform can be semicircular, rectangular or inverted trapezoidal, wherein the semicircular shape is preferentially considered; the diameter of the diversion trench is proper, if the diameter is too small, the flow range is too small, if the diameter is too large, the self-cleaning flow velocity cannot be achieved under the small flow, the dredging vehicle cannot cross over, and the diameter of the diversion trench is generally 10-20% of the inner diameter of the tunnel.
The thickness H of the concrete platform can be substantially determined according to the above requirements.
The gradient of the diversion trench is preferably consistent with that of the tunnel, and is generally 0.5-2.0 per mill; the designed flow speed is more than or equal to 0.75m/s when the diversion trench is full.
Inside the concrete platform of tunnel bottom can pre-buried a certain amount of wiring pipes, the laying and the protection of cables such as electric power, information of being convenient for.
The application range of the invention is that the inner diameter is more than or equal to 6m, and the gradient is within 0.5-2.0 per mill of the deep drainage storage-regulation tunnel.
The main principle of the invention is as follows: due to the existence of the diversion trench, when the inflow flow of the tunnel is small, water flows in the diversion trench, and the designed flow rate is more than or equal to 0.75m/s when the diversion trench is full of flow, so that the self-cleaning flow rate is met, and the hydraulic anti-silting self-cleaning is realized. Meanwhile, the concrete platform is inclined to the diversion trench with a certain gradient (1% -3%), so that deposition of particles on the concrete platform during large flow can be reduced.
Meanwhile, the concrete platform arranged at the bottom of the tunnel facilitates running and working of machinery such as dredging vehicles and the like, so that the mechanical operation level is improved, and the labor intensity and time of workers are reduced. The pre-buried wiring pipe in the concrete platform is convenient for lay and protect cables such as electric power, information and the like, and provides guarantee for power supply and communication requirements of working conditions such as tunnel desilting and daily maintenance.
The invention conforms to the development and application trend of deep drainage storage tunnels, fully considers the dredging difficulty brought by ultra-deep tunnels, has the characteristics of siltation prevention, convenience for mechanical dredging and the like, creates good conditions for hydraulic self-cleaning and mechanical dredging (dredging vehicles and the like), embodies the technical characteristics of high efficiency, clear process, simple structure and convenience for operation and maintenance, can reduce the operation and maintenance difficulty of the deep drainage storage tunnels, improve the mechanical operation level and reduce the labor intensity of operators, and is suitable for being applied to large deep drainage storage tunnels.
Drawings
FIG. 1 is a schematic sectional view of the present invention.
Detailed Description
The invention is further described below with reference to the figures and examples.
1. The invention discloses an anti-silting and convenient mechanical clearing section form of a deep drainage storage tunnel, which mainly comprises the section form of the deep drainage storage tunnel and is characterized in that: the deep drainage regulation tunnel section form including setting up the concrete platform in the tunnel bottom, the guiding gutter in the middle of the platform, the inside pre-buried wiring pipe of platform. The invention solves the problems of easy siltation and difficult cleaning of deep storage tunnels caused by deep burial and large scale, improves the mechanization and informatization level of tunnel maintenance based on the people-oriented idea, and can provide support for the design, operation and maintenance of deep storage tunnel technology. The invention aims at a deep drainage storage adjusting tunnel with the inner diameter size capable of meeting the space requirement of the dredging vehicle for entering and exiting, namely a tunnel with the inner diameter D more than or equal to 6 m. The concrete platform is arranged at the bottom of the tunnel, the diversion trench is arranged in the middle of the platform, certain width is reserved on two sides of the diversion trench to facilitate running of a dredging vehicle, and the width of one side is generally larger than or equal to 1 m.
The inner diameter D of the deep drainage regulation and storage tunnel in the application example is 10m, the gradient is 0.5 per thousand, and the concrete characteristics are as follows:
1. the thickness H of the center of the concrete platform arranged at the bottom is 1m, a certain width is reserved on each of two sides of the diversion trench to facilitate the running of a dredging vehicle, and the width of one side is about 2.25 m;
2. the concrete platform arranged at the bottom inclines to the middle diversion trench according to the gradient of 2 percent; the diversion trench arranged in the middle of the bottom concrete platform is semicircular; the diameter D1 of the diversion trench is 1600mm, is 16% of the inner diameter of the tunnel, and the diversion trench is moderate in size; the gradient of the diversion trench is preferably consistent with that of the tunnel, and is generally 0.5 per mill; the designed flow speed is 0.87m/s when the diversion trench is full, and is greater than the self-cleaning flow speed by 0.75 m/s.
3. Inside diameter D2 of the inside pre-buried 6 department of concrete platform is the wiring pipe of 100, the laying and the protection of cables such as electric power, information of being convenient for, each 3 departments in guiding gutter both sides.
The sewage treatment process formed by the characteristics has the remarkable technical characteristics that:
the deep drainage storage tunnel has the technical characteristics of high efficiency, clear process, simple structure and convenience in operation and maintenance, can reduce the operation and maintenance difficulty of the deep drainage storage tunnel, improve the mechanical operation level, reduce the labor intensity of operators, and is suitable for being applied to large deep drainage storage tunnels.
And secondly, the concept of prevention priority is embodied, and through optimal design, the section of the tunnel has the characteristic of siltation prevention, so that good conditions are created for hydraulic self-purification, and the workload of dredging is reduced.
And thirdly, the concept of people-oriented is embodied, the mechanization and informatization level of tunnel maintenance is improved, and support can be provided for the design, operation and maintenance of the deep storage tunnel technology.
The embodiments of the present invention are described in detail above with reference to the drawings, but the present invention is not limited to the described embodiments. Many variations, modifications, substitutions and alterations of the embodiments described herein will occur to those skilled in the art without departing from the spirit and scope of the invention.

Claims (6)

1. The utility model provides a deep drainage regulation tunnel prevents that silt is long-pending mechanical clear section of dredging of being convenient for, includes deep drainage regulation tunnel section, its characterized in that: the deep drainage regulation tunnel section be equipped with the guiding gutter including setting up the concrete platform in the tunnel bottom in the middle of the concrete platform, the inside pre-buried wiring pipe that has of concrete platform.
2. The anti-silting and easy-to-clean section of the deep drainage storage tunnel according to claim 1, characterized in that: the inner diameter of the tunnel is more than or equal to 6 m; the two sides of the concrete platform arranged at the bottom are respectively provided with a certain width so as to facilitate the running of a dredging vehicle, and the width of one side is more than or equal to 1 m.
3. The deep drainage storage tunnel silt prevention and easy mechanical dredging section according to claim 1 or 2, characterized in that: the concrete platform arranged at the bottom inclines to the middle diversion trench according to a certain gradient, and the gradient is within the range of 1% -3%.
4. The deep drainage storage tunnel silt prevention and easy mechanical dredging section according to claim 1 or 2, characterized in that: the diversion trench is arranged in the middle of the bottom concrete platform and is semicircular, rectangular or inverted trapezoidal; the diameter of the diversion trench is 10-20% of the inner diameter of the tunnel.
5. The deep drainage storage tunnel silt prevention and easy mechanical dredging section according to claim 1 or 2, characterized in that: the gradient of the diversion trench is consistent with that of the tunnel, and is generally 0.5-2.0 per mill; the designed flow speed is more than or equal to 0.75m/s when the diversion trench is full.
6. The anti-silting section form for the deep drainage storage tunnel according to claim 1 or 2, wherein: the inside wiring pipe that can pre-buried a certain amount of concrete platform, the laying and the protection of cables such as electric power, information of being convenient for.
CN201911032272.9A 2019-10-28 2019-10-28 Deep drainage regulation tunnel prevents that silt is long-pending and is convenient for mechanical section of dredging Pending CN110847959A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911032272.9A CN110847959A (en) 2019-10-28 2019-10-28 Deep drainage regulation tunnel prevents that silt is long-pending and is convenient for mechanical section of dredging

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911032272.9A CN110847959A (en) 2019-10-28 2019-10-28 Deep drainage regulation tunnel prevents that silt is long-pending and is convenient for mechanical section of dredging

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111852557A (en) * 2020-07-06 2020-10-30 中建三局绿色产业投资有限公司 Siltation cleaning method applied to non-cutoff drainage deep tunnel engineering

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111852557A (en) * 2020-07-06 2020-10-30 中建三局绿色产业投资有限公司 Siltation cleaning method applied to non-cutoff drainage deep tunnel engineering

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