CN110542752A - A slope runoff simulation device and its application method - Google Patents
A slope runoff simulation device and its application method Download PDFInfo
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Abstract
本发明涉及一种坡面径流模拟装置，包括供水系统、水槽和记录系统。其中水槽包括稳流段、消能段、闸门A、闸门B,其采用颗粒均匀的河砂有规律地排列在有机玻璃板上制造糙率板或3D打印技术自行设计糙率板，可以模拟多种坡面情况；用可升降的支架支撑整个水槽，水槽可以在支架上随意调节高度进而达到模拟不同坡度的目的；同时通过水槽前端设置稳流前池和消能区，缓解供水流量过大时带来的动能干扰。
The invention relates to a slope runoff simulation device, which includes a water supply system, a water tank and a recording system. The water tank includes a steady flow section, an energy dissipation section, gate A, and gate B. River sand with uniform particles is regularly arranged on a plexiglass plate to make a roughness plate or a roughness plate designed by 3D printing technology, which can simulate multiple different slope conditions; the whole water tank is supported by a liftable bracket, and the height of the water tank can be adjusted at will on the bracket to achieve the purpose of simulating different slopes; at the same time, a steady flow forebay and an energy dissipation area are set at the front of the tank to relieve excessive water supply flow. kinetic energy disturbance.
Description
技术领域technical field
本发明涉及一种水流模拟装置，特别是一种坡面径流模拟装置及其使用方法。The invention relates to a water flow simulating device, in particular to a slope runoff simulating device and a using method thereof.
背景技术Background technique
当前由于人类活动的影响，对流域坡面造成了人为干扰，从而对坡面流的形成及汇流过程产生较大影响，降雨与坡面径流的响应关系变得异常，加剧了暴雨、洪水的发生，并容易引发水文地质灾害，造成巨大的经济损失，因此对坡面径流的研究显得尤为重要。At present, due to the influence of human activities, human disturbance has been caused to the slope of the watershed, which has a great impact on the formation of slope flow and the confluence process. The response relationship between rainfall and slope runoff has become abnormal, which has exacerbated the occurrence of heavy rain and floods. , and easily lead to hydrogeological disasters, resulting in huge economic losses, so the study of slope runoff is particularly important.
现有技术中，对于坡面径流的研究主要是利用室内模拟装置，实验一般设置不同坡度的水槽，并在水槽内铺设用以模拟流域坡面状况的装置，通过人工放水或人工的降雨来模拟坡面水流，观察坡面水流的不同状况。而由于铺设材料的单一，无法模拟多种坡面状况。同时现有技术中在改变坡面坡度时，底部铺设的砂石或植被容易被水流冲刷，导致模拟结果产生较大的误差。专利CN C104535295B中采用坡度不可调的水平多段水槽进行模拟实验，并在实验段铺设多孔板，在多孔板上插设有仿真模型和塑料棒，并通过设置在高位的水箱送水。虽然其可以模拟多种状况的坡面环境，但其采用控制供水箱水位稳定的方式来控制供水流量，在出水口并未设置供水流量的检验装置，难以保证供水的准确性；同时其水槽内被分为三部分：平水段、下沉段和量水段，供水时进水装置水满后直接溢流进入平水段，当供水流量较大时，会产生较大的动能，给进入水槽的水流带来较强的干扰；并且水槽坡度唯一，难以模拟多种坡度下的坡面流；而其使用在多孔板上插入塑料棒或构筑物模型的方式进行坡面状况的模拟，虽然构筑物可以完全按照实物模型进行缩小，但是构筑物模型的糙率和实物的糙率之间的关系难以确定。In the prior art, the research on slope runoff mainly uses indoor simulation devices. Generally, tanks with different slopes are set up in the experiments, and devices are laid in the tanks to simulate the slope conditions of the watershed, and simulated by artificial water discharge or artificial rainfall. Slope flow, observe the different conditions of slope flow. However, due to the single paving material, it is impossible to simulate various slope conditions. At the same time, when changing the slope of the slope in the prior art, the sandstone or vegetation laid on the bottom is easily washed away by the water flow, resulting in large errors in the simulation results. In the patent CN C104535295B, a non-adjustable horizontal multi-section water tank is used for simulation experiments, and a porous plate is laid in the experimental section. Simulation models and plastic rods are inserted on the porous plate, and water is sent through a water tank set at a high level. Although it can simulate the slope environment in various conditions, it controls the water supply flow by controlling the water level of the water supply tank to be stable, and there is no inspection device for the water supply flow at the water outlet, so it is difficult to guarantee the accuracy of the water supply; It is divided into three parts: flat water section, sinking section and water measuring section. When water is supplied, the water inlet device overflows directly into the flat water section when the water flow is large. The water flow brings strong interference; and the slope of the tank is unique, so it is difficult to simulate the slope flow under various slopes; and it uses the method of inserting plastic rods or structure models on the perforated plate to simulate the slope conditions, although the structure can be completely The reduction is performed according to the physical model, but the relationship between the roughness of the structure model and the roughness of the real object is difficult to determine.
因此，亟需一种能模拟多种坡度及不同坡面环境的坡面径流模拟装置。Therefore, there is an urgent need for a slope runoff simulation device capable of simulating various slopes and different slope environments.
发明内容Contents of the invention
为解决上述技术问题，本发明提供一种坡面径流模拟装置，包括供水系统、水槽和记录系统，其中供水系统、水槽和记录系统组从右至左依次安装在支架上。In order to solve the above technical problems, the present invention provides a slope runoff simulation device, including a water supply system, a water tank and a recording system, wherein the water supply system, water tank and recording system are installed on the bracket in sequence from right to left.
所述的供水系统包括水泵、变频器、电子流量计，电子流量计放置于水泵与水槽之间的输水管中，变频器控制水泵的驱动机构。The water supply system includes a water pump, a frequency converter, and an electronic flowmeter. The electronic flowmeter is placed in the water delivery pipe between the water pump and the water tank, and the frequency converter controls the driving mechanism of the water pump.
所述水槽包括稳流段、消能段、闸门A、闸门B,其中闸门A、闸门B之间形成实验段，且稳流段、消能段、闸门A、闸门B从供水系统侧依次从右向左布置，且所述的消能段与稳流段通过隔板隔开。The water tank includes a steady flow section, an energy dissipation section, a gate A, and a gate B, wherein an experimental section is formed between the gate A and the gate B, and the steady flow section, the energy dissipation section, the gate A, and the gate B are sequentially connected from the water supply system side to Arranged from right to left, and the energy dissipation section and the steady flow section are separated by a partition.
所述记录系统由流量观测装置和数据记录装置组成，流量观测装置由三角堰和水位自记装置组成，其中流量观测装置和数据记录装置通讯连接。The recording system is composed of a flow observation device and a data recording device. The flow observation device is composed of a triangular weir and a water level self-recording device, wherein the flow observation device and the data recording device are connected by communication.
进一步地，所述消能段包括两块挡板和粗孔海绵，粗孔海绵放置于两块档板之间。Further, the energy dissipation section includes two baffles and a coarse-pored sponge, and the coarse-pored sponge is placed between the two baffles.
进一步地，所述消能段的两块挡板、隔板均设有小孔，且隔板的小孔、沿水流方向消能段的两块挡板的小孔依次减小。Further, the two baffles and the partition of the energy dissipation section are provided with small holes, and the small holes of the partition and the small holes of the two baffles of the energy dissipation section along the direction of water flow are successively reduced.
进一步地，所述支架包括前支撑架和后支撑架，后支撑架上间隔设有通孔，可通过在不同高度固定螺丝来控制水槽使其呈现出不同的坡度。Further, the bracket includes a front support frame and a rear support frame, through holes are arranged at intervals on the rear support frame, and the water tank can be controlled to present different slopes by fixing screws at different heights.
进一步地，所述实验段内铺设糙率板以模拟自然的坡面状况，其中糙率板可拆卸的设置在水槽中。Further, rough boards are laid in the experimental section to simulate natural slope conditions, wherein the rough boards are detachably arranged in the water tank.
进一步地，所述糙率板优选为布设沾有不同尺寸河砂的糙率板或3D打印有不同排列组合形状的糙率板。Further, the roughness plate is preferably a roughness plate covered with river sand of different sizes or a roughness plate printed with different arrangement and combination shapes in 3D.
进一步地，所述水槽为中空无盖矩形，且稳流段的前壁上设置有进水口，靠近闸门B的一端为敞口出水口。Further, the water tank is hollow and rectangular without a cover, and the front wall of the steady flow section is provided with a water inlet, and the end close to the gate B is an open water outlet.
进一步地，所述水位自记装置为三角堰外侧与堰连通的管道内置位移传感器。Further, the water level self-recording device is a built-in displacement sensor in a pipeline connected to the weir outside the triangular weir.
进一步地，闸门A与消能段之间的水槽底部留有泄水口，实验段近闸门B的设有排水口，泄水口、排水口均用橡胶塞堵住，且下方均放置接水桶，闸门A、闸门B边缘有橡胶包裹。Further, there is a drain at the bottom of the tank between the gate A and the energy dissipation section, and a drain is provided near the gate B in the experimental section. The drain and the drain are blocked with rubber plugs, and a water bucket is placed below the gate. A. The edge of gate B is covered with rubber.
进一步地，前支撑架通过电动升降螺杆控制升降，后支撑架固定在安装平面上。Further, the front support frame is controlled to lift by an electric lifting screw, and the rear support frame is fixed on the installation plane.
进一步地，前支撑架通过气缸控制升降，后支撑架固定在安装平面上。Further, the front support frame is lifted and lowered by the air cylinder, and the rear support frame is fixed on the installation plane.
使用时：when using it:
1、选择目标糙率板放置在水槽中，通过调节支架将水槽调整到设计的坡度值；1. Select the target roughness plate and place it in the water tank, and adjust the water tank to the designed slope value by adjusting the bracket;
2、打开水泵，向水槽供水，调节变频器，使供水流量达到设计流量值，并稳定5分钟；2. Turn on the water pump, supply water to the sink, adjust the frequency converter, make the water supply flow reach the design flow value, and stabilize for 5 minutes;
3、若流量较小，则通过称重法对水流水深进行推算。具体步骤如下：实验水槽内水流稳定后同时落下实验水槽的两个闸门，同时打开闸门A外的泄水口，待闸门A外部水流流尽后，将闸门B附近的排水口打开，此时流入接水桶的全部水量即为实验区水量；对实验区的水量进行称重，根据公式W＝ρBLh即可求得h(上式中，W为水体重量，ρ为水的密度，L、B分别为水槽的长、宽，h为平均水深)；若流量很大，则通过水位测量仪对水槽内水位进行读取。3. If the flow rate is small, calculate the water depth by weighing method. The specific steps are as follows: After the water flow in the experimental water tank is stable, it will fall down the two gates of the experimental water tank at the same time, and open the drain outlet outside the gate A at the same time. After the water flow outside the gate A is exhausted, open the drain near the gate B. The total amount of water in the bucket is the amount of water in the experimental area; weigh the amount of water in the experimental area, and h can be obtained according to the formula W=ρBLh (in the above formula, W is the weight of the water body, ρ is the density of water, and L and B are respectively The length and width of the water tank, h is the average water depth); if the flow rate is very large, the water level in the water tank is read by the water level measuring instrument.
4、联立v＝ahm-1、q＝vhB、即可求得下垫面的曼宁糙率系数n(上式中，q为断面流量，v为断面平均流速，θ为坡度角，m为经验系数)。4. Simultaneously v=ah m-1 , q=vhB, The Manning roughness coefficient n of the underlying surface can be obtained (in the above formula, q is the section flow rate, v is the section average flow velocity, θ is the slope angle, and m is the empirical coefficient).
5、根据多组实验数据，用指数方程推算地表糙度和曼宁糙率系数即水力糙率系数的关系。5. According to multiple sets of experimental data, use the exponential equation to calculate the relationship between the surface roughness and the Manning roughness coefficient, that is, the hydraulic roughness coefficient.
本发明用颗粒均匀的河砂有规律地排列在有机玻璃板上制造糙率板，保证下垫面的均一性，且更容易计算地表粗糙度；用3D打印技术自行设计糙率板，可以更准确的获得坡面情况；用支架支撑整个水槽，水槽可以在支架上随意调节高度进而达到模拟不同坡度的目的。水槽前端设置稳流前池和消能区，缓解供水流量过大时带来的动能干扰。其能够实现模拟多种坡度及不同坡面环境的坡面径流。In the present invention, the river sand with uniform particles is regularly arranged on the plexiglass plate to make the roughness plate, which ensures the uniformity of the underlying surface and makes it easier to calculate the surface roughness; the roughness plate is designed by 3D printing technology, which can be more accurate. Accurately obtain the slope condition; support the entire tank with a bracket, and the height of the tank can be adjusted freely on the bracket to achieve the purpose of simulating different slopes. The front of the tank is equipped with a steady flow forebay and an energy dissipation area to alleviate the kinetic energy interference caused by excessive water flow. It can simulate slope runoff of various slopes and different slope environments.
附图说明Description of drawings
图1是本发明一种坡面径流模拟装置结构示意图；Fig. 1 is a schematic structural view of a slope runoff simulation device of the present invention;
图2是一种坡面径流模拟装置水槽结构示意图；Fig. 2 is a schematic diagram of the tank structure of a slope runoff simulation device;
1-供水系统，2-支架A，3-水槽，4-三角堰，5-稳流段，6-消能段，7-闸门A，8-闸门B，9-出水口，10-进水口。1-Water supply system, 2-Bracket A, 3-Sink, 4-Triangle weir, 5-Steady flow section, 6-Energy dissipation section, 7-Gate A, 8-Gate B, 9-Water outlet, 10-Water inlet .
具体实施方式Detailed ways
为使本领域技术人员更好地理解本发明的技术方案，下面结合附图和具体实施方式对本发明的坡面径流模拟装置作进一步的详细描述。In order to enable those skilled in the art to better understand the technical solution of the present invention, the slope runoff simulation device of the present invention will be further described in detail below with reference to the drawings and specific embodiments.
如图1、2所示，一种坡面径流模拟装置，包括供水系统1、水槽3和记录系统组成，其中供水系统、水槽和记录系统组从右至左依次按照在支架2上。As shown in Figures 1 and 2, a slope runoff simulation device is composed of a water supply system 1, a water tank 3 and a recording system, wherein the water supply system, water tank and recording system are arranged on the bracket 2 from right to left.
供水系统包括水泵、变频器、电子流量计。变频器和电子流量计前后放置于水泵与水槽之间的PVC管中，调节变频器数据，同时读取电子流量计数据即可知水泵当下的抽水流量。The water supply system includes water pumps, frequency converters, and electronic flow meters. The frequency converter and the electronic flowmeter are placed in the PVC pipe between the water pump and the water tank, and the current pumping flow of the pump can be known by adjusting the data of the frequency converter and reading the data of the electronic flowmeter at the same time.
实验水槽为中空无盖矩形，尺寸为3m×0.5m×0.3m(长×宽×高)，边壁光滑，从进水口到出水口，可以分为稳流段5(距离进水口约20cm)、消能段6、闸门A7、闸门B8四部分，其中，闸门A7和闸门B8之间的区域为实验段。进水口10为一直径为63mm的圆形入口，为消除部分水流动能，在进水口10与稳流前池间加入隔板，隔板尺寸为0.2m*0.2m，隔板上布设有均匀的孔径为10mm的出水孔一，水流经出水孔一分散后，消除部分动能，进入消能段。消能段由两块挡板和粗孔海绵组成，粗孔海绵放置于两块档板之间，用以进一步消除水流动能，使其平稳的进入实验段。其中，近进水口挡板尺寸为0.5m*0.3m，均匀布设有直径为0.3m的孔A，近闸门A端的挡板尺寸也为0.5m*0.3m，均匀布设有直径为0.1m的孔B。消能段的作用是对水流完全消能，使水流平稳的进入实验段。闸门A、闸门B边缘有橡胶包裹。闸门A与消能段之间的水槽底部留有一个直径为30mm的泄水口。实验段近闸门B的地方留有一个直径为30mm的排水口。泄水口与排水口都用橡胶塞堵住，且下方放置接水桶。The experimental water tank is a hollow rectangle without a cover, with a size of 3m×0.5m×0.3m (length×width×height). The side wall is smooth. From the water inlet to the water outlet, it can be divided into 5 steady flow sections (about 20cm away from the water inlet) , energy dissipation section 6, gate A7, and gate B8, among which the area between gate A7 and gate B8 is the experimental section. The water inlet 10 is a circular inlet with a diameter of 63mm. In order to eliminate part of the water flow energy, a partition is added between the water inlet 10 and the steady flow forebay. The size of the partition is 0.2m*0.2m. Outlet hole 1 with a pore diameter of 10mm. After the water flows through the outlet hole 1 and is dispersed, part of the kinetic energy is eliminated and enters the energy dissipation section. The energy dissipation section is composed of two baffles and a coarse-pored sponge. The coarse-pored sponge is placed between the two baffles to further eliminate the flow energy of the water and make it enter the experimental section smoothly. Among them, the size of the baffle near the water inlet is 0.5m*0.3m, and the holes A with a diameter of 0.3m are evenly arranged, and the size of the baffle near the A end of the gate is also 0.5m*0.3m, and the holes with a diameter of 0.1m are evenly arranged b. The function of the energy dissipation section is to completely dissipate the energy of the water flow, so that the water flow can enter the experimental section smoothly. The edges of gate A and gate B are covered with rubber. There is a drain opening with a diameter of 30mm at the bottom of the tank between the gate A and the energy dissipation section. A drain outlet with a diameter of 30mm is left near gate B in the experimental section. Both the drain port and the drain port are blocked with rubber plugs, and a water receiving bucket is placed below.
整个水槽被支架2控制高度，支架包括前支撑架和后支撑架，前支架上每隔5cm设有小孔，可通过在不同高度固定螺丝来控制水槽使其呈现出不同的坡度。可替代的前支撑架通过电动升降螺杆控制升降，后支撑架固定在安装平面上。可替代的前支撑架通过气缸控制升降，后支撑架固定在安装平面上。The height of the whole water tank is controlled by the bracket 2. The bracket includes a front support frame and a rear support frame. The front bracket is provided with small holes every 5cm, and the water tank can be controlled by fixing screws at different heights so that it presents different slopes. The replaceable front support frame is controlled by an electric lifting screw, and the rear support frame is fixed on the installation plane. The replaceable front support frame is lifted and lowered by the air cylinder, and the rear support frame is fixed on the installation plane.
实验观测记录系统由流量观测装置和数据记录装置组成。流量观测装置由三角堰4和水位自记装置组成。水流经过水槽经出水口9最终流入三角堰，三角堰外侧留有与堰连通的管道，管道内置有位移传感器，实时监测三角堰的水位数据，传感器接有串口线，实时将位移传感器的水位数据传输至数据记录装置的存储卡中。The experimental observation and recording system consists of a flow observation device and a data recording device. The flow observation device is composed of a triangular weir 4 and a water level self-recording device. The water flows through the water tank through the water outlet 9 and finally flows into the triangular weir. There is a pipeline connected to the weir on the outside of the triangular weir. A displacement sensor is built in the pipeline to monitor the water level data of the triangular weir in real time. Transfer to the memory card of the data logger.
水槽内可以铺设糙率板以模拟自然的坡面状况。糙率板为可更换的活动薄板，与实验水槽并非一体。其尺寸与实验水槽内部完全吻合，可以完全嵌入实验水槽，为避免糙率板和实验水槽的接缝之间漏水，将糙率板放置进水槽后一般使用玻璃胶对接缝进行进一步的密封。出水口设有卡扣，更换糙率板时，掀开卡扣，用壁纸刀划开接缝处的玻璃胶即可轻松取下糙率板进行更换。Rough slabs can be laid in the tank to simulate natural slope conditions. The rough plate is a replaceable movable thin plate, which is not integrated with the experimental water tank. Its size is completely consistent with the inside of the experimental water tank, and can be completely embedded in the experimental water tank. In order to avoid water leakage between the rough plate and the experimental water tank, glass glue is generally used to further seal the joint after the rough plate is placed in the water tank. There is a buckle at the water outlet. When replacing the rough board, open the buckle and cut the glass glue at the seam with a wallpaper knife to easily remove the rough board for replacement.
地表糙度指的是地表在比降梯度最大的方向上的起伏状况，与水力糙率是两个不同的概念，但是现有的研究表明二者之间存在指数关系。地表糙度的设计有两种，一种是布设沾有不同尺寸河砂的糙率板，选择的河砂粒径分别为d＝1-2mm,2-4mm,4-6mm,8-10mm,12-15mm。一种是用3D打印方式打印出有不同排列组合形状的糙率板来进行坡面状况设置。这种设计方式与用塑料棒和构筑物模型相比，可控性更强，且由于形状简单，3D打印图形在设计时能完全获得表面起伏程度，因此能更容易确定地表粗糙率。Surface roughness refers to the undulation of the surface in the direction of the largest slope gradient. It is two different concepts from hydraulic roughness, but existing research shows that there is an exponential relationship between the two. There are two types of surface roughness design, one is to lay out roughness boards with different sizes of river sand, and the selected river sand particle sizes are d=1-2mm, 2-4mm, 4-6mm, 8-10mm, 12-15mm. One is to use 3D printing to print rough boards with different arrangement and combination shapes to set the slope condition. Compared with plastic rods and structure models, this design method is more controllable, and because of the simple shape, the 3D printing graphics can fully obtain the surface undulations during design, so it is easier to determine the surface roughness.
由于有机玻璃板不会产生下渗，因此当供水稳定时，流入实验水槽的水流流量与出水口流出水流流量一致。选择某一固定的供水流量，使流量计数值稳定在设计流量至少5分钟，通过稳定时的三角堰水位，根据三角堰水位流量公式计算出流流量，若由三角堰水位数据计算出的流量与设计的供水流量一致，则认为供水准确，若三角堰水位数据能保持与水位计相同的稳定时间，则认为供水稳定。Since the plexiglass plate does not produce infiltration, when the water supply is stable, the flow of water flowing into the experimental tank is consistent with the flow of water flowing out of the water outlet. Select a certain fixed water supply flow rate to keep the flow counter value stable at the design flow rate for at least 5 minutes. Through the stable triangular weir water level, calculate the outflow flow according to the triangular weir water level flow formula. If the flow rate calculated from the triangular weir water level data and If the designed water supply flow rate is consistent, the water supply is considered to be accurate. If the water level data of the triangular weir can maintain the same stabilization time as the water level gauge, the water supply is considered to be stable.
使用时：when using it:
1、选择目标糙率板放置在水槽中，通过调节支架将水槽调整到设计的坡度值；1. Select the target roughness plate and place it in the water tank, and adjust the water tank to the designed slope value by adjusting the bracket;
2、打开水泵，向水槽供水，调节变频器，使供水流量达到设计流量值，并稳定5分钟；2. Turn on the water pump, supply water to the sink, adjust the frequency converter, make the water supply flow reach the design flow value, and stabilize for 5 minutes;
3、若流量较小，则通过称重法对水流水深进行推算。具体步骤如下：实验水槽内水流稳定后同时落下实验水槽的两个闸门，同时打开闸门A外的泄水口，待闸门A外部水流流尽后，将闸门B附近的排水口打开，此时流入接水桶的全部水量即为实验区水量；对实验区的水量进行称重，根据公式W＝ρBLh即可求得h(上式中，W为水体重量，ρ为水的密度，L、B分别为水槽的长、宽，h为平均水深)；若流量很大，则通过水位测量仪对水槽内水位进行读取。3. If the flow rate is small, calculate the water depth by weighing method. The specific steps are as follows: After the water flow in the experimental water tank is stable, it will fall down the two gates of the experimental water tank at the same time, and open the drain outlet outside the gate A at the same time. After the water flow outside the gate A is exhausted, open the drain near the gate B. The total amount of water in the bucket is the amount of water in the experimental area; weigh the amount of water in the experimental area, and h can be obtained according to the formula W=ρBLh (in the above formula, W is the weight of the water body, ρ is the density of water, and L and B are respectively The length and width of the water tank, h is the average water depth); if the flow rate is very large, the water level in the water tank is read by the water level measuring instrument.
4、联立v＝ahm-1、q＝vhB、即可求得下垫面的曼宁糙率系数n(上式中，q为断面流量，v为断面平均流速，θ为坡度角，m为经验系数)。4. Simultaneously v=ah m-1 , q=vhB, The Manning roughness coefficient n of the underlying surface can be obtained (in the above formula, q is the section flow rate, v is the section average flow velocity, θ is the slope angle, and m is the empirical coefficient).
5、根据多组实验数据，用指数方程推算地表糙度和曼宁糙率系数即水力糙率系数的关系。5. According to multiple sets of experimental data, use the exponential equation to calculate the relationship between the surface roughness and the Manning roughness coefficient, that is, the hydraulic roughness coefficient.
可以理解的是，以上实施方式仅仅是为了说明本发明的原理而采用的示例性实施方式，然而本发明并不局限于此。对于本领域内的普通技术人员而言，在不脱离本本发明的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本发明的保护范围。It can be understood that, the above embodiments are only exemplary embodiments adopted for illustrating the principle of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111238771A (en) * | 2020-03-10 | 2020-06-05 | 北京市水科学技术研究院 | Water tank roughness coefficient experimental device |
| CN111443183A (en) * | 2020-04-02 | 2020-07-24 | 安徽省（水利部淮河水利委员会）水利科学研究院（安徽省水利工程质量检测中心站） | Portable slope runoff water and sand collecting groove |
| CN111642449A (en) * | 2020-05-28 | 2020-09-11 | 水利部中国科学院水工程生态研究所 | Slope-variable water tank for testing swimming capacity of fishes |
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007011582A (en) * | 2005-06-29 | 2007-01-18 | Information & Science Techno-System Co Ltd | Flood forecasting system |
| CN101877194A (en) * | 2010-06-25 | 2010-11-03 | 中国科学院水利部成都山地灾害与环境研究所 | A device for simulating thin-layer runoff |
| CN104008689A (en) * | 2014-04-25 | 2014-08-27 | 山东科技大学 | Simulation experiment table for multi-flow-direction and flow distribution algorithm of slope water current |
| CN104535295A (en) * | 2015-01-26 | 2015-04-22 | 山东科技大学 | Multi-functional experimental device for simulating bevel flowing water force factor and experimental method thereof |
| CN204705462U (en) * | 2015-04-29 | 2015-10-14 | 山东科技大学 | A kind of experimental provision verifying vector roughness |
| WO2015172078A1 (en) * | 2014-05-09 | 2015-11-12 | Fastditch, Inc | Structural lining system |
| CN105714730A (en) * | 2016-04-12 | 2016-06-29 | 长春工程学院 | Multi-dimensional adjusting test platform for hydraulic engineering and application of multi-dimensional adjusting test platform |
| CN205369152U (en) * | 2016-01-22 | 2016-07-06 | 邓绍云 | Practical high efficiency is paddled building and is streamed phenomenon observation device |
| CN105974092A (en) * | 2016-07-08 | 2016-09-28 | 重庆科技学院 | Method for full-dimension representation and analysis of dense reservoir pore throats |
| CN106599471A (en) * | 2016-12-15 | 2017-04-26 | 中国水利水电科学研究院 | Coupling simulation method of flow and sediment process of distributed watershed |
| CN206220046U (en) * | 2016-11-14 | 2017-06-06 | 三峡大学 | A kind of flip trajectory bucket experimental rig for being applied to cushion pool |
| CN108362858A (en) * | 2018-02-01 | 2018-08-03 | 三峡大学 | A kind of experimental provision and method of simulation Canal in Loess Area soil erosion characteristic |
| CN109425722A (en) * | 2017-08-29 | 2019-03-05 | 中国科学院地理科学与资源研究所 | A kind of runoff of sloping field and corrode sink experimental provision |
| CN211292887U (en) * | 2019-10-09 | 2020-08-18 | 中国科学院地理科学与资源研究所 | Slope runoff simulation device |
-
2019
- 2019-10-09 CN CN201910954900.2A patent/CN110542752B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007011582A (en) * | 2005-06-29 | 2007-01-18 | Information & Science Techno-System Co Ltd | Flood forecasting system |
| CN101877194A (en) * | 2010-06-25 | 2010-11-03 | 中国科学院水利部成都山地灾害与环境研究所 | A device for simulating thin-layer runoff |
| CN104008689A (en) * | 2014-04-25 | 2014-08-27 | 山东科技大学 | Simulation experiment table for multi-flow-direction and flow distribution algorithm of slope water current |
| WO2015172078A1 (en) * | 2014-05-09 | 2015-11-12 | Fastditch, Inc | Structural lining system |
| CN104535295A (en) * | 2015-01-26 | 2015-04-22 | 山东科技大学 | Multi-functional experimental device for simulating bevel flowing water force factor and experimental method thereof |
| CN204705462U (en) * | 2015-04-29 | 2015-10-14 | 山东科技大学 | A kind of experimental provision verifying vector roughness |
| CN205369152U (en) * | 2016-01-22 | 2016-07-06 | 邓绍云 | Practical high efficiency is paddled building and is streamed phenomenon observation device |
| CN105714730A (en) * | 2016-04-12 | 2016-06-29 | 长春工程学院 | Multi-dimensional adjusting test platform for hydraulic engineering and application of multi-dimensional adjusting test platform |
| CN105974092A (en) * | 2016-07-08 | 2016-09-28 | 重庆科技学院 | Method for full-dimension representation and analysis of dense reservoir pore throats |
| CN206220046U (en) * | 2016-11-14 | 2017-06-06 | 三峡大学 | A kind of flip trajectory bucket experimental rig for being applied to cushion pool |
| CN106599471A (en) * | 2016-12-15 | 2017-04-26 | 中国水利水电科学研究院 | Coupling simulation method of flow and sediment process of distributed watershed |
| CN109425722A (en) * | 2017-08-29 | 2019-03-05 | 中国科学院地理科学与资源研究所 | A kind of runoff of sloping field and corrode sink experimental provision |
| CN108362858A (en) * | 2018-02-01 | 2018-08-03 | 三峡大学 | A kind of experimental provision and method of simulation Canal in Loess Area soil erosion characteristic |
| CN211292887U (en) * | 2019-10-09 | 2020-08-18 | 中国科学院地理科学与资源研究所 | Slope runoff simulation device |
Non-Patent Citations (5)
| Title |
|---|
| RUDI HESSEL: "Estimating Manning\'s n for steep slopes", CATENA, 30 October 2003 (2003-10-30), pages 77 - 91 * |
| 水电能源科学: "汶川震区滑坡堆积体土石混合坡面细沟水流曼宁系数特征研究", 水电能源科学, 28 April 2016 (2016-04-28), pages 115 - 119 * |
| 程娅姗;王中根;李军;黄振;叶翔宇;唐寅;: "确定坡面径流过程曼宁糙率系数的实验方法研究", 地理科学进展, no. 04, 28 April 2020 (2020-04-28), pages 158 - 163 * |
| 翟艳宾;吴发启;王健;尹武君;: "不同人工糙率床面水力学特性的试验研究", 水土保持通报, no. 06, 15 December 2012 (2012-12-15) * |
| 郭忠录;马美景;蔡崇法;闫峰陵;: "模拟降雨径流作用下红壤坡面侵蚀水动力学机制", 长江流域资源与环境, no. 01, 15 January 2017 (2017-01-15), pages 225 - 231 * |
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|---|---|---|---|---|
| WO2021139579A1 (en) * | 2020-01-10 | 2021-07-15 | 中国长江三峡集团有限公司 | Method for determining flow velocity distribution of rough sub-layer |
| CN111238771A (en) * | 2020-03-10 | 2020-06-05 | 北京市水科学技术研究院 | Water tank roughness coefficient experimental device |
| CN111443183A (en) * | 2020-04-02 | 2020-07-24 | 安徽省（水利部淮河水利委员会）水利科学研究院（安徽省水利工程质量检测中心站） | Portable slope runoff water and sand collecting groove |
| CN111642449A (en) * | 2020-05-28 | 2020-09-11 | 水利部中国科学院水工程生态研究所 | Slope-variable water tank for testing swimming capacity of fishes |
| CN111983187A (en) * | 2020-08-07 | 2020-11-24 | 上海市环境科学研究院 | A farmland runoff monitoring device suitable for paddy fields and dry land |
| CN111929425A (en) * | 2020-09-12 | 2020-11-13 | 农业农村部环境保护科研监测所 | Slope runoff measuring system applied to slope granular body structure |
| CN112284682A (en) * | 2020-11-10 | 2021-01-29 | 云南大学 | Experimental device and method for simulating gully head falling acupoint development |
| CN113340384A (en) * | 2021-05-28 | 2021-09-03 | 昆明理工大学 | Non-contact flow measurement method inspection device for open scene |
| CN113702264A (en) * | 2021-08-31 | 2021-11-26 | 中国矿业大学 | Simulation arch tunnel aggregate fills water shutoff test device |
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| CN116183839A (en) * | 2023-04-27 | 2023-05-30 | 华南师范大学 | A slope runoff simulation device |
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