CN114441293A - Complicated water flow scouring erosion bank slope simulation device and method thereof - Google Patents
Complicated water flow scouring erosion bank slope simulation device and method thereof Download PDFInfo
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- CN114441293A CN114441293A CN202210127048.3A CN202210127048A CN114441293A CN 114441293 A CN114441293 A CN 114441293A CN 202210127048 A CN202210127048 A CN 202210127048A CN 114441293 A CN114441293 A CN 114441293A
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Abstract
The invention discloses a complicated water flow scouring erosion bank slope simulation device and a method thereof, and the complicated water flow scouring erosion bank slope simulation device comprises a model box, wherein a bank slope model is arranged on one side of the model box, a water level is arranged in the model box and does not exceed the bank slope model to form a water area model, an action end member and a compensation end member are arranged on the model box, the action end member and the compensation end form a water flow loop through a power member, the power member comprises a peristaltic pump group and a plurality of peristaltic pump hoses, the output end of the action end member and the output end of the compensation end are respectively connected with the peristaltic pump hoses, the output end of the action end member and the compensation end are arranged below the water level of the model box, and the peristaltic pump group is arranged above the model box. The invention discloses a test method and a test device for simulating complicated water flow to erode and erode a bank slope, which can control the direction and the flow velocity of water flow, realize a more complicated flow field and better simulate the process of eroding the bank slope.
Description
Technical Field
The invention belongs to the technical field of geological simulation detection, and provides a complicated water flow scouring erosion bank slope simulation device and method.
Background
Fluid motion such as water flow, debris flow and the like has certain scouring and eroding effects on bank slopes such as river banks, lake banks and the like. For the bank slope of soil, the bank collapse disasters such as collapse, collapse and landslide are easy to happen due to continuous deepening of the scouring and erosion action. Taking the debris flow as an example, the upstream of the debris flow channel generally takes strong scouring as a main part, and the bank foot of the channel is continuously scoured and eroded, so that the inclination angle of the channel is continuously increased, and an adjacent hollow body with certain mass and volume is formed. When the gravity of the soil body near the open space of the bank is greater than the shear strength of the soil body, the soil body enters the channel unstably and is further transported downstream along with the debris flow, traffic facilities such as roads, railways and the like, even villages and towns and the like are washed, and huge losses are caused to lives and properties of people. Therefore, the method has important practical significance for evaluating the bank slope bank collapse risk under the action of fluid erosion and corrosion. A small scale model is designed based on the geological and topographic conditions of the prototype bank slope and the flowing characteristics of water flow or debris flow, and the development of related model tests is an effective method for revealing the erosion and landslide mechanism of the bank slope, and has important value on the evaluation of the bank collapse risk.
At present, the model test is mainly a water tank test, a bank slope model is generally arranged in a straight water tank with 10m level and 100m level, water is continuously supplied at the top of the water tank at a certain flow rate, a water body flows downwards under the action of gravity, and the development of bank slope erosion and the development process of bank collapse in the flowing process are observed. The main problems of the model test method and the related device are as follows: and (I) the bank slope erosion process under a complex water flow form is difficult to simulate. The water flow in the water tank mainly flows downwards in parallel to the bottom of the water tank, so that the complex water flow forms such as curve helical flow and the like in reality are difficult to simulate, and the statistical result of the Yangtze river bank collapse phenomenon shows that the complex water flow forms such as curve helical flow and the like obviously improve the bank collapse probability; (II) the simulation test device is huge, the structure is complex and the operation is complicated, the time consumption for making the model is long, the cost is high, the simulation test model is too huge, the manual work and the time for preparing the model are too much, and the time for simulating the scouring is too long. The water flow direction is constant, only simulation test can be carried out, the real water flow has non-constancy, and more complex water flow turbulence can not be simulated, so that a complex water flow scouring erosion bank slope simulation device and a complex water flow scouring erosion bank slope simulation method are needed.
Disclosure of Invention
In view of this, the embodiment of the invention provides a complicated water flow erosion and corrosion bank slope simulation device and a method thereof, which can control the water flow direction and the water flow velocity, realize a complicated flow field, and better simulate the erosion and corrosion bank slope process.
The invention comprises a model box, wherein a bank slope model is arranged on one side of the model box, a water area model is formed in the model box by the water level which is higher than the bank slope model, an action end member and a compensation end member are arranged on the model box, the action end member and the compensation end form a water flow loop through a power member, the power member comprises a peristaltic pump group and a plurality of peristaltic pump hoses, the output end of the action end member and the output end of the compensation end are respectively connected with the peristaltic pump hoses, the output end of the action end member and the compensation end are arranged below the water level of the model box, and the peristaltic pump group is arranged above the model box.
Further, the action end component comprises an action end top beam, an action end downward-extending rod and an action end metal pipe, the action end top beam is fixed on the model box and located above the water level of the model box, a hollow groove is reserved in the middle of the action end top beam, a plurality of action end downward-extending rods are arranged in the hollow groove, the other end of each action end downward-extending rod is connected with the action end metal pipe, and the action end metal pipe is connected with the power component.
Further, the compensation end component is located and keeps away from the opposite side of bank slope model, the compensation end component includes compensation end back timber, compensation end stretch down pole and compensation end tubular metal resonator, the compensation end back timber is fixed on the mold box and be located the water level top of mold box, the middle part of compensation end back timber leaves the dead slot, set up a plurality of compensation end stretch down poles in the dead slot, the other end and the second compensation end tubular metal resonator of compensation end stretch down pole are connected, the second compensation end tubular metal resonator with the power component is connected.
Further, the active end member and the compensating end member are provided with a 360 degree rotatable connection block.
Further, the action end top beam and the compensation end top beam are fixed on the side plates of the model box through bolts.
The experimental method of the complicated water flow scouring erosion bank slope simulation device comprises the following steps:
a, firstly preparing a side slope model in a model box, then slowly adding water in the model box to a water level required by a test,
b, installing an action end component according to test requirements, setting the position and the axis direction of the action end metal pipe, and connecting a power component after installing a compensation end component.
And C, setting the steering and rotating speed of each pump in the peristaltic pump set according to test requirements, starting the pump set to form a target flow field, and observing the erosion and corrosion, deformation and slide collapse processes of the bank slope.
The invention has the beneficial effects that:
the invention discloses a test method and a test device for simulating complicated water flow to erode and erode a bank slope, which can control the direction and the flow velocity of water flow, realize a more complicated flow field and better simulate the process of eroding the bank slope.
Drawings
FIG. 1 is a general schematic diagram of a complicated water flow scouring erosion bank slope simulation device provided by the invention;
FIG. 2 is a cross-sectional view of a complicated water flow scouring erosion bank slope simulation device provided by the invention;
FIG. 3 is a schematic structural diagram of a compensation end component of the simulation device for erosion of a bank slope by complex water flow scouring;
wherein in the figure: 1-model box, 2-bank slope model, 3-action end top beam, 4-action end lower extension rod, 5-action end 360-degree rotatable connecting block, 6-action end metal tube, 7-compensation end top beam 8-compensation end lower extension rod, 9-compensation end 360-degree rotatable connecting block, 10-compensation end metal tube, 11-peristaltic pump set, 12-peristaltic pump hose and other components
Detailed Description
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
As shown in figures 1, 2 and 3, the test method and device for simulating complicated water flow scouring erosion bank slope comprises a model box (1), a bank slope model (2), an action end top beam (3), an action end downward extending rod (4), an action end 360-degree rotatable connecting block (5), an action end metal pipe (6), a compensation end top beam (7), a compensation end downward extending rod (8), a compensation end 360-degree rotatable connecting block (9), a compensation end metal pipe (10), a peristaltic pump set (11), a peristaltic pump hose and other components (12).
The method can be divided into four categories, wherein the categories are test model parts and mainly comprise a model box (1) and a bank slope model (2), the bank slope model is prepared on one side of the model box generally based on prototype geology, terrain conditions, water flow characteristics and similar theories, and water is generally injected outside a slope to a corresponding position.
The second type is an action end component which is used for forming a flow field in a water area near a bank slope as required, and an action end top beam 3 is clamped on the model box 1 by using bolts to form a supporting device. The action end top beam 3 is connected with the action end downward-extending rod 4 through a bolt, a hollow groove is reserved in the middle of the action end top beam 3, and a plurality of action end downward-extending rods 4 can be arranged along the hollow groove. The action end downward extending rod 4 is connected with the action end metal pipe 6 through the action end 360-degree rotatable connecting block 5, and requirements of different water flow directions are met. A plurality of groups of action end 360-degree rotatable connecting blocks 5 and action end metal tubes 6 can be arranged on the action end downward extending rod 4.
The third type is a compensation end component, for any action end metal pipe 6, a compensation end metal pipe 10 is required to be equipped at the same time, if the action end water body flows into the model water body from the metal pipe, the compensation end water body flows in the opposite direction, and the flow direction of the compensation end water body is also changed. The mechanism can keep the water level of the model water body basically constant. The compensation end is arranged at the other side far away from the bank slope model 2, and the composition of the compensation end is basically consistent with that of the action end component, which is not described in detail.
The fourth type is a power component, mainly comprising a peristaltic pump group 11 and a peristaltic pump hose 12. Peristaltic pump hoses are connected between each group of action end metal pipes 6 and the corresponding compensation end metal pipes 10 to form a passage, and the peristaltic pump hoses are clamped in a peristaltic pump head, so that the rotating speed and the rotating direction of the peristaltic pump can be adjusted to control the speed and the flow direction of water flow.
The test process comprises the following steps: firstly, preparing a side slope model 2 in a model box, then slowly adding water in the model box 1 to a water level required by a test, installing an action end component according to the test requirement, setting the position and the axial direction of an action end metal pipe 6, and connecting a power component after installing a compensation end component. And (3) setting the steering and rotating speed of each pump in the peristaltic pump set 11 according to test requirements, starting the pump set to form a target flow field, and observing the processes of erosion, deformation and slide collapse of the bank slope.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (6)
1. The utility model provides a complicated rivers erode erosion bank slope analogue means, includes the model case, its characterized in that, one side of model case is provided with bank slope model, water level sets up according to the demand and with bank slope model forms the waters model, be provided with effect end component and compensation end component on the model case, effect end component and compensation end pass through power component and form the rivers return circuit, power component includes peristaltic pump group and many peristaltic pump hoses, the output of effect end component with the output of compensation end respectively with the peristaltic pump hose connection, the output of effect end component with the compensation end sets up below the water level of model case, the peristaltic pump group sets up in the model case top.
2. The complex waterflow erosion and corrosion shore slope simulator as defined in claim 1, wherein the action-end member comprises an action-end top beam, an action-end lower extension rod and an action-end metal tube, the action-end top beam is fixed on the model box and is located above the water level of the model box, a hollow groove is left in the middle of the action-end top beam, a plurality of action-end lower extension rods are arranged in the hollow groove, the other ends of the action-end lower extension rods are connected with the action-end metal tube, and the action-end metal tube is connected with the power member.
3. The complex water flow erosion and corrosion bank slope simulation device as claimed in claim 1, wherein the compensation end member is located at the other side far away from the bank slope model, the compensation end member comprises a compensation end top beam, a compensation end downward-extending rod and a compensation end metal pipe, the compensation end top beam is fixed on the model box and located above the water level of the model box, an empty groove is reserved in the middle of the compensation end top beam, a plurality of compensation end downward-extending rods are arranged in the empty groove, the other end of the compensation end downward-extending rod is connected with a second compensation end metal pipe, and the second compensation end metal pipe is connected with the power member.
4. The complex waterflow scour erosion simulating assembly according to claim 1 wherein the active end member and the compensating end member are provided with 360 degree rotatable connection blocks.
5. The complex waterflow erosion simulating assembly as set forth in claim 1 wherein said active end cap and said offset end cap are bolted to said mold box side panels.
6. An experimental method of a complicated water flow scouring erosion bank slope simulation device is characterized by comprising the following steps:
a, firstly preparing a side slope model in a model box, then slowly adding water in the model box to a water level required by a test,
b, installing an action end component according to test requirements, setting the position and the axis direction of the action end metal pipe, and connecting a power component after installing a compensation end component.
And C, setting the steering and rotating speed of each pump in the peristaltic pump set according to test requirements, starting the pump set to form a target flow field, and observing the erosion and corrosion, deformation and slide collapse processes of the bank slope.
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| CN202210127048.3A CN114441293B (en) | 2022-02-11 | 2022-02-11 | Complicated water flow scouring erosion bank slope simulation device and method thereof |
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| CN202210127048.3A CN114441293B (en) | 2022-02-11 | 2022-02-11 | Complicated water flow scouring erosion bank slope simulation device and method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115420878A (en) * | 2022-08-31 | 2022-12-02 | 长安大学 | Test device and test method for simulating landslide caused by river dynamic erosion |
| CN115876980A (en) * | 2022-12-29 | 2023-03-31 | 长江大学 | Freezing-thawing landslide test device under coupling action of underground water erosion and river lateral erosion |
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| CN115876980A (en) * | 2022-12-29 | 2023-03-31 | 长江大学 | Freezing-thawing landslide test device under coupling action of underground water erosion and river lateral erosion |
| CN115876980B (en) * | 2022-12-29 | 2024-01-09 | 长江大学 | Freezing and thawing landslide test device under coupling effect of groundwater erosion and river side erosion |
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