CN207314299U - A kind of arrangement of the narrow steep full tunnel-spillway in river valley bank - Google Patents

A kind of arrangement of the narrow steep full tunnel-spillway in river valley bank Download PDF

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Publication number
CN207314299U
CN207314299U CN201721155732.3U CN201721155732U CN207314299U CN 207314299 U CN207314299 U CN 207314299U CN 201721155732 U CN201721155732 U CN 201721155732U CN 207314299 U CN207314299 U CN 207314299U
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China
Prior art keywords
control
spillway
arrangement
approach channel
channel hole
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CN201721155732.3U
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Chinese (zh)
Inventor
孔彩粉
邓毅国
杨健
刘海宇
秦楠
王春生
刘士佳
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PowerChina Beijing Engineering Corp Ltd
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PowerChina Beijing Engineering Corp Ltd
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Priority to CN201721155732.3U priority Critical patent/CN207314299U/en
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Abstract

The utility model discloses a kind of arrangement of the narrow steep full tunnel-spillway in river valley bank, including approach channel hole section, control section and the barrel section being arranged in massif, approach channel hole section is located at control section upstream side, control section downstream connects with barrel section, and approach channel hole section and control section also are disposed in massif.The approach channel hole section is free-flow spillway tunnel, and horizontal layout is combined using straight line with bend, and section is gateway opening type, and the wide Parallel to the flow direction in hole is descending, and hole height is constant.The overcurrent weir-type of the control section is practical weir, to improve water blocking elevation, increases conveyance capacity.The arrangement of the utility model, avoids a wide range of excavation of the steep side slope of spillway import, reduces high slope, avoids construction interference of the narrow steep River Valley Slope construction to dam foundation pit, ensure that the duration of a project.

Description

A kind of arrangement of the narrow steep full tunnel-spillway in river valley bank
Technical field
A kind of arrangement of hydraulic and hydroelectric engineering spillway on bank is the utility model is related to, more particularly, to a kind of narrow The arrangement of the steep full tunnel-spillway in river valley bank.
Background technology
Spillway on bank in hydraulic and hydroelectric engineering, since water inlet elevation is higher, so the current in spillway are Without pressure free flow, its arrangement also has a kind of common arrangement " to draw in addition to " approach channel section+control section+lets out groove section " Canal section+control section+barrel section ".Second of arrangement is bank tunnel-spillway, it is generally the case that bank tunnel-spillway Import approach channel section arranges that control section is arranged in massif using the tower arrangement of bank built by the mountain, barrel section using open channel.Work as work Position river valley where journey is narrow, bank slope is steep, during tower using bank using open channel, the control section arrangement of import approach channel section, import department Position easily forms and excavates high slope, simultaneously because spillway import is close apart from dam, spillway import position is constructed to dam Foundation pit construction interference is very big, and dam construction is often the key for controlling the duration, so the arrangement of research spillway, especially It is that research avoids construction interference, the import arrangement of reduction high slope from being highly desirable.
Free-flow spillway tunnel in hydraulic and hydroelectric engineering, to meet flow-shape requirement in hole, generally using straight line, when When arrangement is limited to be needed to turn, the arrangement of bend free-flow spillway tunnel just becomes the key technical problem for needing to study.
On the overcurrent weir-type of control section, there is pressure flood discharge on the tower control section of bank of either spillway on bank, or bank Hole is arranged in the control section in massif, its overcurrent weir-type is using flat weir or hump weir, when needing to improve conveyance capacity, It is necessary the practical weir of research conveyance capacity higher.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of narrow steep full tunnel-spillway in river valley bank Arrangement, solves the interference problem of narrow steep river valley construction, reduces slope height.
Technical solution is used by the utility model:A kind of arrangement knot of the narrow steep full tunnel-spillway in river valley bank Structure, including approach channel hole section, control section and the barrel section being arranged in massif, approach channel hole section are located at control section upstream side, control section Downstream connects with barrel section, and approach channel hole section and control section also are disposed in massif.
Approach channel hole section is free-flow spillway tunnel, and horizontal layout is combined using straight line with bend, and section is gateway opening type, hole Wide Parallel to the flow direction is descending, and hole height is constant.
The overcurrent weir-type of the control section is practical weir, to improve water blocking elevation, increases conveyance capacity.
The beneficial effects of the utility model are:
(1) arrangement of the narrow steep full tunnel-spillway in river valley bank, because approach channel hole section and control section use ground Lower the cavern layout, reduces import slope height and difficulty of construction;
(2) since spillway import is close to dam arrangement, the underground chamber arrangement that approach channel hole section is used with control section, Avoid spillway import construction to dam foundation pit construction interference, it is ensured that the duration of a project, have good social benefit and Economic benefit, provides mentality of designing and reference for similar engineering bank flood discharging tunnel arrangement, has reference.
Brief description of the drawings
Fig. 1 is the arrangement floor map of the narrow steep full tunnel-spillway in river valley bank of the utility model.
Fig. 2 is the profile of Fig. 1.
In figure:1-approach channel hole section;2-control section;3-barrel section.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description:
As depicted in figs. 1 and 2, the arrangement of the narrow steep full tunnel-spillway in river valley bank of the utility model, bag Approach channel hole section 1, control section 2 and the barrel section 3 being arranged in massif are included, approach channel hole section 1 is located at 2 upstream side of control section, control section 2 Downstream connects with barrel section 3, and approach channel hole section 1 and control section 2 also are disposed in massif.
The approach channel hole section 1 is free-flow spillway tunnel, and horizontal layout is combined using straight line with bend, and section is gateway opening type, The wide Parallel to the flow direction in hole is descending, and hole height is constant.
The overcurrent weir-type of the control section 2 is practical weir.
It is described in detail with reference to embodiment:
Certain big (2) type Hydropower Project, the narrow bank slope in river valley is steep, and it is attached that the full tunnel-spillway import in bank is located at dam Closely.The arrangement of spillway import is tower according to conventional bank, then import side slope maximum excavation height about 135m, side slope branch It is big to protect quantities, disturbs dam foundation pit construction, influences the crucial duration of engineering.To solve the above problems, spillway import approach channel Section and control section are arranged in massif.
As depicted in figs. 1 and 2, approach channel hole section 1, control section 2 and barrel section 3, are arranged in massif.
Approach channel hole section 1 be free flow tunnel, the horizontal layout being combined using straight line with bend, to meet that import hydraulics is wanted To ask, the stability of increase import position underground chamber, straightway import both sides use tubaeform arrangement, and in tunnel intermediate arrangement Dividing pier.Approach channel hole 1 centerline length of section is 94m, and base slope 0, section is gateway opening type, and cross dimensions is (wide for 12-26 × 25m × high), control flow rate of water flow is not more than 5m/s.
Control section 2 is arranged in the straightway downstream of approach channel hole section 1, long 28.43m, and overcurrent weir-type is practical weir, and weir is high 8.0m, if a gate hole, lock pore size is 12.0m × 10.0m.
Barrel section 3 is arranged in 2 downstream of control section, is connected by transition with control section 2, sectional form is gateway opening Type, cross dimensions are 12-8 × 10.5-9m (wide × high).
The import arrangement of spillway, fully combines the steep topographic and geologic condition of the narrow bank slope in import position river valley, Approach channel hole section and control section are arranged in massif, solve the problems, such as the high slope that open intake arrangement is brought, and Spillway import is constructed construction interference problem to dam foundation pit, ensure that the duration of a project, obtain good social benefit and Economic benefit.
Embodiment described above is merely to illustrate the technological thought and feature of the utility model, and its object is to make ability Technical staff in domain is it will be appreciated that the content of the utility model and implement according to this, it is impossible to only limits this practicality with the present embodiment New the scope of the claims, i.e., the equal change or modification that all revealed spirit of the utility model is made, still can be new in this practicality In the scope of the claims of type.

Claims (3)

1. a kind of arrangement of the narrow steep full tunnel-spillway in river valley bank, including approach channel hole section (1), control section (2) and The barrel section (3) being arranged in massif, approach channel hole section (1) are located at control section (2) upstream side, control section (2) downstream and barrel Section (3) connects, it is characterised in that approach channel hole section (1) and control section (2) also are disposed in massif.
2. the arrangement of the narrow steep full tunnel-spillway in river valley bank according to claim 1, it is characterised in that described Approach channel hole section (1) is free-flow spillway tunnel, and horizontal layout is combined using straight line with bend, and section is gateway opening type, and hole is wide to flow downstream Direction is descending, and hole height is constant.
3. the arrangement of the narrow steep full tunnel-spillway in river valley bank according to claim 1, it is characterised in that described The overcurrent weir-type of control section (2) is practical weir.
CN201721155732.3U 2017-09-11 2017-09-11 A kind of arrangement of the narrow steep full tunnel-spillway in river valley bank Active CN207314299U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721155732.3U CN207314299U (en) 2017-09-11 2017-09-11 A kind of arrangement of the narrow steep full tunnel-spillway in river valley bank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721155732.3U CN207314299U (en) 2017-09-11 2017-09-11 A kind of arrangement of the narrow steep full tunnel-spillway in river valley bank

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CN207314299U true CN207314299U (en) 2018-05-04

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110821521A (en) * 2019-11-15 2020-02-21 中铁建大桥工程局集团第五工程有限公司 Construction method for excavation and support of hydropower station spillway cavern

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110821521A (en) * 2019-11-15 2020-02-21 中铁建大桥工程局集团第五工程有限公司 Construction method for excavation and support of hydropower station spillway cavern
CN110821521B (en) * 2019-11-15 2021-08-20 中铁建大桥工程局集团第五工程有限公司 Construction method for excavation and support of hydropower station spillway cavern

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