CN113431001B - Debris flow sand blocking dam attachment device and size determination method - Google Patents
Debris flow sand blocking dam attachment device and size determination method Download PDFInfo
- Publication number
- CN113431001B CN113431001B CN202110691182.1A CN202110691182A CN113431001B CN 113431001 B CN113431001 B CN 113431001B CN 202110691182 A CN202110691182 A CN 202110691182A CN 113431001 B CN113431001 B CN 113431001B
- Authority
- CN
- China
- Prior art keywords
- grating
- dam
- grid
- debris flow
- horizontal
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/02—Sediment base gates; Sand sluices; Structures for retaining arresting waterborne material
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/02—Sediment base gates; Sand sluices; Structures for retaining arresting waterborne material
- E02B8/023—Arresting devices for waterborne materials
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/08—Fluids
-
- 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
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
Abstract
The invention relates to an auxiliary device for a debris flow sand dam, and belongs to the technical field of mountain disasters. The auxiliary device can continuously separate the mountain torrents and debris flow coarse particles so as to exert the function of the sand dam to the maximum extent. The device is settled and has had the sand blocking dam low reaches, is connected with the sand blocking dam overflow mouth, includes: the device comprises a front inclined grating, a front horizontal grating, a side inclined grating and a side horizontal grating; the invention also provides a method for determining the building size of the device, and the reasonable building size of the device needs to be determined according to different practical situations, so that the device has a good coarse particle regulation effect.
Description
Technical Field
The invention relates to a debris flow debris dam, in particular to a debris flow debris dam accessory device capable of separating floating trees and coarse particles and a method for determining the size of the device, and belongs to the technical field of mountain disasters.
Background
The debris flow is a solid-liquid two-phase fluid full of silt and stones, which occurs in mountainous areas, usually has sudden and short outbreak, and has high solid-phase substance content, wide gradation and strong silt flushing capacity.
The retaining dam is an important measure in debris flow prevention engineering and can be divided into a solid retaining dam and an open grid dam according to structure and function. The solid sand dam has the main functions of completely or partially intercepting the incoming water and sand from the upstream, reducing the concentration of debris flow, changing the conditions of water and sand transportation and controlling the particle size of the discharged and sand transported; slowing down the slope fall of the riverbed, reducing the movement speed of debris flow and reducing the longitudinal erosion of the riverbed and the gravity erosion of two banks or transverse banks. The erosion datum plane of the local trench bed is improved, the slope and valley stabilizing effect is achieved, and the type of the largest sand dam is built.
The debris flow grid dam can be divided into a beam grid dam, a steel pipe grid dam, a comb dam, a pile forest and the like according to the structural form. These grid dams have the same characteristics: the drainage holes with a certain size are arranged on the dam body, so that fine particles and debris flow slurry are allowed to penetrate through the blocking dam, and debris flow coarse particles are blocked in front of the dam in a sorting place, so that the content, the volume weight, the scale and the impact force of the debris flow coarse particles are reduced, and the purpose of reducing the damage of the debris flow is achieved.
The physical silt arrester usually has a full reservoir capacity due to poor sorting property, so that it loses the function of continuously intercepting silt. And a part of solid sand blocking dams form a bursting flood peak even after bursting, so that the damage of debris flow is increased.
The conventional debris flow grid dam (fig. 1(a)) has the defects that the blocked debris flow coarse particles are directly accumulated in the structure body to block the drainage hole (fig. 1(b)), so that the drainage hole cannot continuously realize the functions of blocking the coarse particles and blocking the fine particles; secondly, the blocked open grid dam is similar to a solid dam, and the silt blocking function is lost even after the storage capacity is full.
Disclosure of Invention
The invention provides an auxiliary device of a debris flow debris dam capable of continuously separating debris particles from torrential flood and debris flow, aiming at solving the problem that the existing debris flow debris dam cannot well play the functions of intercepting silt, blocking thick and discharging thin after being full, so as to play the function of the existing debris dam to the maximum extent, and a novel debris dam with better functionality can be formed by combining conventional debris dams when the debris dam is newly built.
In order to achieve the above object, the present invention provides an attachment for a debris flow dam, which is an attachment for continuously separating floating wood and debris flow coarse particles on the basis of an existing debris flow dam, and is installed at the downstream of the existing debris flow dam and connected with an overflow port of the debris flow dam, and comprises: the device comprises a front inclined grating, a front horizontal grating, a side inclined grating, a side horizontal grating and a support pier; one end of the front inclined grating is connected with an overflow port of the sand blocking dam, and the front inclined grating has the functions of separating coarse particles and adjusting the concentration, volume weight, flow rate and the like of solid matters in the debris flow; the other end of the front inclined grid is connected with a front horizontal grid, the position of the front horizontal grid is lower than an overflow port of the sand blocking dam, and the front horizontal grid is used for stopping coarse particulate matters separated by the front inclined grid; the side inclined grids are symmetrically distributed on two sides of the front inclined grid, one ends of the two side inclined grids are respectively connected with the end edges of two sides of the front inclined grid, the other ends of the side inclined grids are connected with the side horizontal grids, the side inclined grids and the side horizontal grids are used for assisting in separating debris flow coarse particles falling from the front inclined grids to two sides in a rolling mode, and a silt stopping space can be widened; and the front horizontal grating and the side horizontal grating are supported by the supporting piers to be higher than the dam bottom.
Further, the lateral horizontal grids are horizontally connected with the front horizontal grids.
Further, the oblique downstream intersection angle of the side oblique grids and the front oblique grids is 45-60 degrees.
The working principle of the device is as follows: when debris flow flows into the front inclined grating of the auxiliary device of the invention through the overflow port of the existing sand-blocking dam, fine particles with the particle size smaller than the spacing of the gratings and slurry parts vertically fall into the bottom of the trench and are discharged to the downstream, coarse particles with the particle size larger than the spacing of the gratings and floating wood roll to the front horizontal grating along the gratings, move on the front horizontal grating for a certain distance and then stop accumulating on the horizontal grating; when coarse particles and floating wood move on the front inclined grating, if part of mud-rock fluid rolls to two sides, the mud-rock fluid can continue to move along the side inclined grating, fine particles and slurry fall into the channel through the gap of the side inclined grating and are discharged to the downstream, and the coarse particles, the floating wood and the like with the particle size larger than the space between the side inclined gratings continue to move along the side inclined grating to the side horizontal grating and stop accumulating. By the device, the solid sand dam without the coarse blocking and fine discharging functions and the open type grid dam without the coarse blocking and fine discharging functions have the coarse blocking and fine discharging functions again, so that the debris flow disaster reduction effect can be better played.
In order to enable the device to have a good coarse particle regulation and control effect, and to determine the reasonable construction size of the device aiming at different practical situations, the invention also provides a size determination method of the auxiliary device, which realizes an ideal regulation and control effect with the lowest cost by more accurately calculating and controlling the construction size of the device, and the method comprises the following steps:
the design solid matter separation rate p was determined according to formula (1):
determining the grid spacing D according to equation (2):
D＝dp (2)
determining the front inclined grid gradient theta according to the formula (3) 1 ：
Determining the height H of the front horizontal grid support pier according to the formulas (4) to (5) h ：
Determining the vertical height H of the front inclined grid according to the formulas (6) to (7) s And length L s ：
H s ＝H-H h (6)
Determining the front face according to equation (8)Horizontal grid length L h1 ：
Determining the intersection angle beta of the side oblique grating and the front oblique grating according to the formula (9):
β＝90-θ 1 -α (9)
determining the slope theta of a side grating according to equation (10) 2 ：
Length of side horizontal grating: the value can be directly against the side walls of the two banks of the channel from the intersection point of the side inclined grating, and the value range is that for fully playing the function of stopping silt and optimizing the cost
Wherein:
γ ct : target volume weight, g/cm, after grid structure regulation 3 (ii) a Assuming regulatory objectives: the modification of the debris flow is realized after the regulation and control of the grid structure, the debris flow with high volume weight is changed into the debris flow or the water-stone flow with low volume weight, namely the volume weight gamma of the regulated and controlled target fluid ct The method comprises the following steps of (1) knowing;
d: grid spacing;
d p : the cumulative percentage of the particle size in the debris flow particle grading curve which is smaller than the particle size is the particle size value corresponding to p;
Q c 、Q c ': flow rate m of debris flow before and after being regulated by the grating 3 /s；
γ s : the volume weight of the solid matter can be generally 2.6 to 2.7g/cm 3 ；
γ c : mud-rock flow volume weight g/cm before grid structure regulation 3 ；
C v : the solid matter concentration and the volume weight of the debris flow satisfy the relational expression
γ w Taking the volume weight of water as 1.0g/cm 3 ；
b: the width of an overflow port of the debris flow dam;
h: the total height of the overflow port of the sand retaining dam from the dam bottom;
v c : the designed flow velocity of the debris flow passing through the cross section of the overflow port;
v c ': the flow velocity of the debris discharged downstream after being regulated by the grating, m/s, can be generally v c '≈v c ；
μ: the sliding friction coefficient between the coarse particles and the grating is determined according to the grating material;
g: acceleration of gravity;
θ 1 : the slope of the front inclined grid;
H h : the height of the front horizontal grid support pier;
L s : the inclined length of the front inclined grating;
L h1 : front horizontal grid length;
α: the inclination angle of the downstream surface of the sand dam is generally 3-11 degrees;
θ 2 : side inclined grid slope;
b: width of debris flow channel.
The invention has good social and economic benefits and engineering practice significance:
1. the invention has wide application range and can continuously exert the separation capability of coarse particles of the debris flow. The invention can be installed at the downstream of the existing sand blocking dam, so that the solid sand blocking dam which originally has no coarse blocking and fine discharging function and the open type grid dam which has lost the coarse blocking and fine discharging function have the coarse blocking and fine discharging function again, thereby better playing the disaster reduction effect of debris flow; and can be combined with a newly-built sand blocking dam, so that the regulation and control capability of the sand blocking dam on debris flow is greatly enhanced.
2. The invention can increase the silt stopping capacity of the debris flow. Stopping silt through the horizontal grids at the downstream and the two sides, namely, the drainage channel occupying the original debris flow channel is not squeezed, and the debris flow silt stopping space can be enlarged. And the silt stopping area is convenient to clean, and the silt stopping space can be repeatedly utilized. By the parameter determination method provided by the invention, the cost optimization can be realized while ideal debris flow regulation and control is obtained.
3. Model experiment research shows that the device has a good separation effect especially on floating trees carried in debris flows, especially on long floating trees with the ratio of the length of the floating trees to the width of the opening of the overflow port of the sand dam more than 1.5, the separation effect reaches 60% -80%, and the disaster effect of the floating trees can be effectively reduced.
4. The invention has the function of protecting the dam site of the existing sand dam. Due to the inclined grids on the front side and the two sides, coarse particles passing through the dam cannot directly fall behind the dam, and therefore the capability of erosion of a dam site by debris flow can be reduced.
5. The invention can realize the assembly type construction, and has convenient installation and strong operability.
Drawings
FIG. 1 shows an open type debris flow grid dam before (a) and after (b) being plugged with debris flow solid particles;
FIG. 2 is a top view of the attachment of the present invention;
FIG. 3 is a front view of the attachment of the present invention;
FIG. 4 is a side view of the attachment of the present invention;
wherein: 1: a sand blocking dam, 2: front inclined grid, 3: side inclined grid, 4: front horizontal grid, 5: lateral horizontal grid, 6: and (4) supporting piers.
Detailed Description
The following detailed description of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1
The invention provides an auxiliary device of a debris flow sand dam, the structure of which is shown in figures 2-4, the device is arranged at the downstream of the existing sand dam 1 and is connected with an overflow port of the sand dam, and the auxiliary device comprises: a front inclined grate 2, a front horizontal grate 4, a side inclined grate 3, a side horizontal grate 5 and a support pier 6.
The upward end of the front-face inclined grating is connected with the overflow port of the sand blocking dam, for example, the upward end of the front-face inclined grating is abutted against and fixed at the overflow port of the sand blocking dam, the downward other end of the front-face inclined grating is connected with the front-face horizontal grating, and the position of the front-face horizontal grating is lower than the overflow port of the sand blocking dam and is used for stopping silt from rolling off the separated coarse particulate matters from the front-face inclined grating; the side inclined gratings are symmetrically distributed on the left side and the right side of the front inclined grating, one ends of the two side inclined gratings are respectively connected with the left side end edge and the right side end edge of the front inclined grating, the other ends of the side inclined gratings are connected with corresponding side horizontal gratings, the side inclined gratings and the side horizontal gratings are used for assisting in separating debris flow coarse particles falling from the front inclined gratings to the two sides in a rolling mode, and a silt stopping space can be widened; the front horizontal grids and the side horizontal grids are supported by support piers to be higher than the dam bottom, so that fine particle substances separated by the grids can fall down.
The lateral horizontal grids are horizontally connected with the front horizontal grids, and the oblique downstream intersection angle of the lateral oblique grids and the front oblique grids is 45-60 degrees.
Example 2
The size determination method of the auxiliary device of the debris flow dam comprises the following steps: firstly, the following design parameters are obtained through field geological survey and test:
the width B of the channel is 20m, the height H from the bottom of the debris flow debris dam to the overflow port is 12m, the downstream gradient alpha of the debris flow debris dam is 10 degrees, and the width B of the overflow port is 10 m; design flow velocity v of debris flow design section c The design flow Q is 8m/s c ＝300m 3 S, initial volume weight of debris flow gamma c Is 1.8g/cm 3 Solid matter concentration C v 0.47, angle of repose of coarse particles of solid material in debris flow
At 35 deg.C, the particle size distribution data of the solid matter in the debris flow is shown in Table 1 below, and the solid matter volume weight γ s The value is 2.65g/cm 3 The steel is adopted to build the grid, and the sliding friction coefficient mu is 0.47.
Table 1 mud-rock flow solid matter particle full gradation data
The determination of the parameters of the accessory device is as follows:
regulating and controlling the target: after the device is regulated and controlled, the debris flow is changed into sand-containing water flow, and the volume weight gamma of the target fluid ct ＝1.45g/cm 3 。
(1) Determination of design solid matter separation Rate p
(2) Grid spacing D
The spacing of the grid openings can be d according to the design solid matter separation rate p 60 According to the grading data of solid matter particles in the debris flow, the method comprises the following steps:
D＝d 60 ＝100mm＝0.1m
(2) front inclined grid slope theta 1
The slope of the front inclined grid, theta, affects the speed at which particles move over it and the clogging thereof 1 The following values are taken:
(3) height H of front horizontal grid support pier h
According to known conditions and the formulas (4) to (5), the following formula is calculated:
(4) vertical height H of front side inclined grid s And length L s
According to the known conditions and the formulas (6) and (7), the vertical height H of the front inclined grid s And length L s Respectively as follows:
H s ＝12-2.7＝9.3m
(5) front horizontal grid length L h1
According to the known conditions and the formula (8), the front horizontal grid length L can be calculated h1 ：
L h1 ＝16.7m
(6) Intersection angle beta of side oblique grating and front oblique grating
According to the known conditions and the formula (9), the intersection angle β of the side oblique grating and the front oblique grating takes the value:
β＝90-10-35＝45°
(7) slope of side inclined grid theta 2
According to known conditions and formula (10):
simultaneously, a certain silt stopping space theta reserved for the side horizontal grating is considered 2 The value is 70 degrees.
(8) Length of side horizontal grid
According to known conditions, the value varies within a range of
Therefore, the length of the horizontal grid on the side surface is 1.62-5 m.
The side horizontal grids and the front horizontal grids are built on the same plane.
Claims (4)
1. An attachment for a debris flow dam, said attachment being disposed downstream of the dam and being connected to an overflow port of the dam, comprising: the device comprises a front inclined grating, a front horizontal grating, a side inclined grating, a side horizontal grating and a support pier; one end of the front-side inclined grating is connected with the overflow port of the sand blocking dam, the other end of the front-side inclined grating is connected with the front-side horizontal grating, and the position of the front-side horizontal grating is lower than the overflow port of the sand blocking dam; the side inclined gratings are symmetrically distributed on two sides of the front inclined grating, one ends of the two side inclined gratings are respectively connected with the end edges of two sides of the front inclined grating, and the other ends of the two side inclined gratings are connected with the side horizontal grating; and the front horizontal grating and the side horizontal grating are supported by the supporting piers to be higher than the dam bottom.
2. The attachment of claim 1, wherein the lateral horizontal grid is horizontally connected to the frontal horizontal grid.
3. The attachment of claim 1 wherein the angled side grilles are angled from the angled front grilles at a downstream angle of 45 ° to 60 °.
4. The method for determining the size of an attachment of a debris flow dam according to claim 1 or 2, comprising the steps of:
the solid matter separation rate p value was determined according to the formula (1):
determining the grid spacing D according to equation (2):
D＝d p (2)
determining the gradient theta of the front inclined grid according to the formula (3) 1 ：
Determining the height Hh of the front horizontal grid support pier according to the formulas (4) to (5):
determining the vertical height Hs and the length Ls of the front inclined grating according to the formulas (6) to (7):
H s ＝H-H h (6)
determining the front horizontal grid Length L according to equation (8) h1 ：
Determining the intersection angle beta of the side oblique grating and the front oblique grating according to the formula (9):
β＝90-θ 1 -α (9)
determining the slope theta of the side slanted grating according to equation (10) 2 ：
Determining the length of a lateral horizontal grid according to formula (11), wherein the length of the lateral horizontal grid takes the value as follows:
wherein:
γ ct : target volume weight, g/cm, after grid structure regulation 3 (ii) a The control objectives are assumed to be: the mud-rock flow is modified by the grid regulation and control, and the mud-rock flow with high volume weight is changed into the mud-rock flow or the water-rock flow with low volume weight, namely the volume weight gamma of the regulated target fluid ct The method comprises the steps of (1) knowing;
d: the spacing of the grids;
d p : the cumulative percentage of the particle size in the debris flow particle grading curve which is smaller than the particle size is the particle size value corresponding to p;
Q c 、Q c ': the flow of the debris flow m is regulated and controlled by the grating 3 /s；
γ s : the volume weight of the solid matter is 2.6-2.7 g/cm 3 ；
γ c : mud-rock flow volume weight g/cm before grid structure regulation 3 ；
C v : the solid matter concentration and the volume weight of the debris flow satisfy the relational expression
γ w Taking the volume weight of water as 1.0g/cm 3 ；
b: the width of an overflow port of the debris flow dam;
h: the total height of the overflow port of the sand retaining dam from the dam bottom;
v c : the designed flow velocity of the debris flow passing through the cross section of the overflow port;
v c ': the mud-rock flow velocity discharged to the downstream after being regulated and controlled by the grating is m/s, v is taken c ′＝v c ；
μ: the sliding friction coefficient between the coarse particles and the grating is determined according to the grating material;
g: acceleration of gravity;
θ 1 : a front side inclined grid slope;
H h : the height of the front horizontal grid support pier;
L s : the inclined length of the front inclined grating;
L h1 : front horizontal grid length;
α: the inclination angle of the downstream surface of the sand dam is 3-11 degrees;
θ 2 : the slope of the side inclined grids;
b: width of debris flow channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110691182.1A CN113431001B (en) | 2021-06-22 | 2021-06-22 | Debris flow sand blocking dam attachment device and size determination method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110691182.1A CN113431001B (en) | 2021-06-22 | 2021-06-22 | Debris flow sand blocking dam attachment device and size determination method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113431001A CN113431001A (en) | 2021-09-24 |
| CN113431001B true CN113431001B (en) | 2022-08-19 |
Family
ID=77757123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110691182.1A Active CN113431001B (en) | 2021-06-22 | 2021-06-22 | Debris flow sand blocking dam attachment device and size determination method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113431001B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114032851B (en) * | 2021-12-28 | 2023-03-10 | 中国科学院、水利部成都山地灾害与环境研究所 | Mountain area valley debris flow solid-phase particle sorting grid dam and construction method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0782725A (en) * | 1993-09-17 | 1995-03-28 | Takahisa Mizuyama | Permeable erosion control weir levee |
| JP2001262544A (en) * | 2000-03-14 | 2001-09-26 | Nippon Kokan Light Steel Kk | Opening and closing type permeable erosion control dam |
| CN202298575U (en) * | 2011-09-18 | 2012-07-04 | 中国科学院水利部成都山地灾害与环境研究所 | Water and stone separation system for debris flow |
| CN103696405A (en) * | 2013-12-27 | 2014-04-02 | 中国科学院、水利部成都山地灾害与环境研究所 | Herringbone mud-rock flow water and stone separating system designing method |
| CN105603940A (en) * | 2016-01-06 | 2016-05-25 | 中国科学院、水利部成都山地灾害与环境研究所 | Stepped fish crest type water-stone separation system and design method |
| CN209907317U (en) * | 2019-05-15 | 2020-01-07 | 四川大学 | A divide and manage system for mud-rock flow prevention and cure engineering |
-
2021
- 2021-06-22 CN CN202110691182.1A patent/CN113431001B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0782725A (en) * | 1993-09-17 | 1995-03-28 | Takahisa Mizuyama | Permeable erosion control weir levee |
| JP2001262544A (en) * | 2000-03-14 | 2001-09-26 | Nippon Kokan Light Steel Kk | Opening and closing type permeable erosion control dam |
| CN202298575U (en) * | 2011-09-18 | 2012-07-04 | 中国科学院水利部成都山地灾害与环境研究所 | Water and stone separation system for debris flow |
| CN103696405A (en) * | 2013-12-27 | 2014-04-02 | 中国科学院、水利部成都山地灾害与环境研究所 | Herringbone mud-rock flow water and stone separating system designing method |
| CN105603940A (en) * | 2016-01-06 | 2016-05-25 | 中国科学院、水利部成都山地灾害与环境研究所 | Stepped fish crest type water-stone separation system and design method |
| CN209907317U (en) * | 2019-05-15 | 2020-01-07 | 四川大学 | A divide and manage system for mud-rock flow prevention and cure engineering |
Non-Patent Citations (2)
| Title |
|---|
| 基于物质与能量调控效果的开口拦砂坝群设计方法;王小军等;《内蒙古科技与经济》;20200615(第11期);全文 * |
| 泥石流拦挡坝研究现状及发展趋势;谢涛等;《中国地质灾害与防治学报》;20170615(第02期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113431001A (en) | 2021-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Shalash | Effects of sedimentation on the storage capacity of the High Aswan Dam reservoir | |
| JP6486284B2 (en) | Fluid earth and sand damming device | |
| CN105256768B (en) | Box energy dissipation section designing method of box energy dissipation debris flow discharging and guiding groove | |
| Xie et al. | A new water–sediment separation structure for debris flow defense and its model test | |
| CN113431001B (en) | Debris flow sand blocking dam attachment device and size determination method | |
| CN111270652A (en) | Compound mud-rock flow system of blocking | |
| CN209907317U (en) | A divide and manage system for mud-rock flow prevention and cure engineering | |
| CN103306242A (en) | Debris flow control dam for adjusting peak discharge as well as design method and application thereof | |
| CN106096216A (en) | Check dam obturation performance method of discrimination, application | |
| CN108376203B (en) | Design method of comb dam opening width for non-viscous debris flow | |
| Rhone | Baffled apron as spillway energy dissipator | |
| CN113255046B (en) | Debris flow sand dam apron design method and application | |
| Smith et al. | The hydraulic jump in a steeply sloping square conduit | |
| Razi et al. | Application of bed sill to control scouring around cylindrical bridge piers | |
| JP7212581B2 (en) | Debris flow sedimentary work | |
| CN113565524A (en) | Groove type inclined shaft and tunnel structure capable of preventing outburst sand gushing in operation period and design method | |
| CN108755566B (en) | Method for calculating uplift pressure of dam foundation of debris flow sand blocking dam | |
| CN103233440A (en) | Slag type debris flow formation mechanism based prevention method | |
| Bing-Shyan et al. | The experimental study for the allocation of ground-sills downstream of check dams | |
| Ždankus et al. | The Impact of Hydropower Plant on Downstream River Reach. | |
| CN215629701U (en) | Sand prevention dispersion water inlet diversion system | |
| CN116127585B (en) | Design method of downstream energy dissipation safety area of steel dam gate | |
| KR20240009205A (en) | Protecting structure for river bed and construction method thereof | |
| RU2758619C1 (en) | Ground dam with filter spillway | |
| Mai et al. | Assessment of methods of riprap size selections as scour countermeasures at bridge abutments and approach embankments |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |