CN106049368A - Novel channel section easily forming stable ice cover and design method of novel channel section - Google Patents
Novel channel section easily forming stable ice cover and design method of novel channel section Download PDFInfo
- Publication number
- CN106049368A CN106049368A CN201610664053.2A CN201610664053A CN106049368A CN 106049368 A CN106049368 A CN 106049368A CN 201610664053 A CN201610664053 A CN 201610664053A CN 106049368 A CN106049368 A CN 106049368A
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- section
- cross
- trapezoidal
- river
- channel
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/02—Making or lining canals
Abstract
The invention discloses a novel channel section easily forming a stable ice cover and a design method of the novel channel section. The novel channel section comprises an upper half part and a lower half part. The upper half part is an original trapezoidal section, and the lower half part is a rectangular section. The bending moment value of the ice cover in the section is smaller than the bending moment value of the original trapezoidal section, and the maximum bending moment value of the ice cover is smaller than the maximum bending moment value of the ice cover of the original trapezoidal section. According to the novel channel section easily forming the stable ice cover and the design method of the novel channel section, the ice cover can be formed more easily in the designed novel section form, and the formed ice cover is more stable; and a foundation can be laid for normal water conveying of a diversion type power station and a diversion type building in a cold region, and the livelihood issue of the cold region can also be solved.
Description
Technical field
The invention belongs to technical field of buildings, relate to a kind of novel canal cross section being easily formed stable ice sheet and design thereof
Method.
Background technology
On northwest cold district, especially Xinjiang and other places, for guaranteeing that run-of-river power station and water diverting structure in the winter time can
Properly functioning, utilizing the insulation effect of ice sheet to carry out water delivery is a kind of simple and effective measures.And run-of-river power station and diversion
The canal for water conveyance of building is typically all trapezoidal channel, and trapezoidal channel to form stable ice sheet the most relatively difficult general and institute
Take time the most long, have a strong impact on delivery of canal sometimes and cause generated energy to reduce.If use rectangle in this area
Although channel can solve the problem run in trapezoidal channel, but the lining cutting problem of frost heave of rectangular canal is at cold district more
Seriously, thus rectangular canal can not adapt to this area.
Summary of the invention
It is an object of the invention to the defect overcoming above-mentioned technology to exist, it is provided that a kind of be easily formed the novel of stable ice sheet
Canal cross section and method for designing thereof, propose the one novel canal cross section shape of " top half be trapezoidal the latter half be rectangle "
Formula, the section of " first half be trapezoidal former section the latter half be rectangular cross section form " be according to and former trapezoidal cross-section discharge area
Equal principle is arranged.The most both tradition trapezoidal channel can have been overcome to form asking of stable ice sheet time length and difficulty
Topic, can avoid again the lining cutting problem of frost heave of pure rectangular canal.
Its concrete technical scheme is:
A kind of novel canal cross section being easily formed stable ice sheet, including top half and the latter half, the first half is ladder
Shape former section the latter half is rectangular cross section, and in section, the moment of ice sheet is less than the moment of former trapezoidal cross-section, and ice sheet is
Big moment is less than the Maximum bending moment of former trapezoidal cross-section ice sheet.
The method for designing of a kind of novel canal cross section being easily formed stable ice sheet, specifically comprises the following steps that
Step 1, transformation for built trapezoidal channel: according to the area equation principle of the cross-section of river, body channel
Effectively flow surface is directly transformed into rectangular cross section, in the case of ensureing that the cross-section of river depth of water is constant, and effective width of the cross-section of river
Degree can be obviously reduced；
Step 2, for the newly-built first half be trapezoidal cross-section the latter half be that the channel of rectangular cross section is directly according to design
The concrete size of section build；
Step 3, the first half be trapezoidal former section the latter half be rectangular cross section design will according to run-of-river power station or
The water delivery of water diverting structure requires to carry out the Section Design of channel, also to follow the width not mistake as far as possible ensureing the cross-section of river
Greatly, the degree of depth as far as possible making the cross-section of river increases to reduce the width of the cross-section of river；
Step 4, trapezoidal channel built described in step 1 is transformed into the first half be trapezoidal cross-section the latter half be rectangle break
The newly-built first half described in the channel in face and step 2 be trapezoidal cross-section the latter half be the channel of rectangular cross section, will ensure
The lining cutting of good channel, uses concrete material or precast slab to carry out lining cutting.
Compared with prior art, the invention have the benefit that
The New type section form of present invention design is more prone to form ice sheet, and the ice sheet formed is the most more stable.Can
Normal water delivery for cold district run-of-river power station and water diverting structure lays the foundation, and can solve again the people's livelihood of cold district
Problem.
Accompanying drawing explanation
Fig. 1 is the structural representation of tradition trapezoidal channel section；
Fig. 2 is the structural representation of novel canal cross section form.
Detailed description of the invention
With specific embodiment, technical scheme is described in more detail below in conjunction with the accompanying drawings.
Tradition trapezoidal channel form of fracture as it is shown in figure 1, novel canal cross section form as shown in Figure 2.Due to the ice formed
Lid is equivalent to freely-supported on two bank slopes, and from the maximal bending moment formula of simply supported beam, the L2 of New type section is significantly less than former trapezoidal
In L1 in sectional drawing 1, i.e. New type section, the moment of ice sheet is significantly less than the moment of former trapezoidal cross-section, ice in such Fig. 2
The Maximum bending moment of lid, less than the Maximum bending moment of ice sheet in Fig. 1, is more beneficial for stablizing of ice sheet；In addition by hydraulic substantially
Knowledge understands, and in the case of section flow and mean flow rate are equal, when the water surface is the widest, in the middle of section, the flow velocity of upper surface is more
Greatly, because the cross-section of river is the widest, wall effect is smaller on the impact of mid-section, namely in the middle of the trapezoidal cross-section of Fig. 1 Central Plains
The flow velocity of upper surface is more than the flow velocity of upper surface in the middle of the cross-section of river in Fig. 2, and in the cross-section of river, the flow velocity of upper surface is the biggest, ice
Lid is less susceptible to be formed, i.e. New type section form in Fig. 2 is prone to be formed in the short period of time ice sheet, can based on above reason
Know and the New type section form in Fig. 2 is more prone to form ice sheet, and the ice sheet formed is the most more stable.Can be that cold district draws
The normal water delivery of ability of swimming power station and water diverting structure lays the foundation, and can solve again the livelihood issues of cold district.
The novel canal section design step being easily formed stable ice sheet of the present invention:
1) for the transformation of built trapezoidal channel: according to the area equation principle of the cross-section of river, effective body channel
Flow surface is directly transformed into rectangular cross section, in the case of ensureing that the cross-section of river depth of water is constant, it is known that effective width of the cross-section of river
Degree can be obviously reduced, such as: when the depth of water is 2m, and canal bottom width is 2m, and the moment of flexure of ice sheet can be reduced to original about 40%.
2) channel for newly-built " first half be trapezoidal former section the latter half be rectangular cross section " can direct basis
The concrete size of section of design is built；
3) design of " first half be trapezoidal former section the latter half be rectangular cross section " will be according to run-of-river power station or draw
The water delivery of water buildings requires to carry out the Section Design of channel, also to follow and ensure that the width of the cross-section of river is the most excessive as far as possible,
The degree of depth as far as possible making the cross-section of river increases to reduce the width of the cross-section of river.
4) lining cutting of channel will have been ensured for both the above situation, typically can use concrete material or concrete
Soil plate carries out lining cutting.
The above, the only present invention preferably detailed description of the invention, protection scope of the present invention is not limited to this, any ripe
Know those skilled in the art in the technical scope of present disclosure, the letter of the technical scheme that can become apparent to
Altered or equivalence are replaced and are each fallen within protection scope of the present invention.
Claims (2)
1. the novel canal cross section being easily formed stable ice sheet, it is characterised in that include top half and the latter half, on
Half portion be trapezoidal former section the latter half be rectangular cross section, in section, the moment of ice sheet is less than the moment of former trapezoidal cross-section,
The Maximum bending moment of ice sheet is less than the Maximum bending moment of former trapezoidal cross-section ice sheet.
2. the method for designing of the novel canal cross section being easily formed stable ice sheet, it is characterised in that: specifically comprise the following steps that
Step 1, transformation for built trapezoidal channel: according to the area equation principle of the cross-section of river, effective body channel
Flow surface is directly transformed into rectangular cross section, in the case of ensureing that the cross-section of river depth of water is constant, and the effective width meeting of the cross-section of river
It is obviously reduced；
Step 2, for the newly-built first half be trapezoidal former section the latter half be that the channel of rectangular cross section is directly according to design
The concrete size of section is built；
Step 3, the first half be trapezoidal former section the latter half be that the design of rectangular cross section will be according to run-of-river power station or diversion
The water delivery of building requires to carry out the Section Design of channel, also to follow and ensure that the width of the cross-section of river is the most excessive as far as possible, to the greatest extent
Amount makes the degree of depth of the cross-section of river increase to reduce the width of the cross-section of river；
Step 4, trapezoidal channel built described in step 1 is transformed into the first half be trapezoidal cross-section the latter half be rectangular cross section
The newly-built first half described in channel and step 2 be trapezoidal cross-section the latter half be the channel of rectangular cross section, canal will have been ensured
The lining cutting in road, uses concrete material or precast slab to carry out lining cutting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610664053.2A CN106049368A (en) | 2016-08-12 | 2016-08-12 | Novel channel section easily forming stable ice cover and design method of novel channel section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610664053.2A CN106049368A (en) | 2016-08-12 | 2016-08-12 | Novel channel section easily forming stable ice cover and design method of novel channel section |
Publications (1)
| Publication Number | Publication Date |
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| CN106049368A true CN106049368A (en) | 2016-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610664053.2A Pending CN106049368A (en) | 2016-08-12 | 2016-08-12 | Novel channel section easily forming stable ice cover and design method of novel channel section |
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| CN (1) | CN106049368A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108360463A (en) * | 2018-01-24 | 2018-08-03 | 西北农林科技大学 | A kind of High-cold regions canal for water conveyance lures icing cover net |
| CN110468774A (en) * | 2019-08-20 | 2019-11-19 | 中国水利水电科学研究院 | A kind of ice water two-phase flow canal for water conveyance gate section ice berg control method |
| CN110672163A (en) * | 2019-08-21 | 2020-01-10 | 中国水利水电科学研究院 | Method for testing ice period flow of canal in cold region |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103898883A (en) * | 2014-04-04 | 2014-07-02 | 中水北方勘测设计研究有限责任公司 | Water diversion system for long-distance water diversion type hydropower station in severe cold region |
| RU2013147712A (en) * | 2013-10-27 | 2015-05-10 | Общество с ограниченной ответственностью "ТЕХНО ПНК" | METHOD FOR RELAXING THE ICE COVER OF RESERVOIRS |
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2016
- 2016-08-12 CN CN201610664053.2A patent/CN106049368A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2013147712A (en) * | 2013-10-27 | 2015-05-10 | Общество с ограниченной ответственностью "ТЕХНО ПНК" | METHOD FOR RELAXING THE ICE COVER OF RESERVOIRS |
| CN103898883A (en) * | 2014-04-04 | 2014-07-02 | 中水北方勘测设计研究有限责任公司 | Water diversion system for long-distance water diversion type hydropower station in severe cold region |
Non-Patent Citations (2)
| Title |
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| 徐志昌 等: "顺利河水电站引水渠道抗冰冻设计", 《黑龙江水利科技》 * |
| 谭志伟、杨革: "《水工建筑物冻害防治技术》", 30 April 2008, 黄河水利出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108360463A (en) * | 2018-01-24 | 2018-08-03 | 西北农林科技大学 | A kind of High-cold regions canal for water conveyance lures icing cover net |
| CN110468774A (en) * | 2019-08-20 | 2019-11-19 | 中国水利水电科学研究院 | A kind of ice water two-phase flow canal for water conveyance gate section ice berg control method |
| CN110672163A (en) * | 2019-08-21 | 2020-01-10 | 中国水利水电科学研究院 | Method for testing ice period flow of canal in cold region |
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Application publication date: 20161026 |
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