Novel visual subsurface erosion test device for saturated soil body

Abstract

The utility model relates to a novel saturated soil body visual subsurface erosion test device which comprises a flat box body, and a box cover is detachably arranged at the top of the flat box body; a water inlet is formed in the top of the box cover and communicates with a communicating cavity in the box cover, and the communicating cavity is connected with a nozzle at the bottom of the box cover; a partition plate is fixed to the lower portion of the interior of the flat box through a step, a plurality of leakage holes are formed in the partition plate, a monitoring unit is installed on the partition plate between every two adjacent leakage holes, an upstream pipe is installed on the portion, on one side face of the flat box, of the bottom flow channel, a downstream pipe is installed on the opposite side face of the flat box, and stop valves are installed on the upstream pipe and the downstream pipe correspondingly. And a pumping device is mounted on the upstream pipe. According to the utility model, the section structure of the saturated soil body under the subsurface erosion effect can be displayed, so that direct observation from the outside is facilitated. According to the utility model, the activity influence of underground water is fully considered, so that the subsurface erosion process can be simulated more truly, and reliable data support can be provided for subsequent working conditions.

Description

TECHNICAL FIELD

[0001] The utility model relates to soil body hidden erosion experimental device field especially a new type saturated soil body visualization hidden erosion test device. BACKGROUND

[0002] The hidden erosion effect is the process that soluble substances are dissolved and lost and clay particles are washed to the lower part under the influence of the underground water wetting and activity. In geotechnical engineering, the hidden erosion phenomenon of saturated soil body widely exists in engineering structures such as slope, roadbed and dam, and has important influence on the stability and safety of engineering. The soil seepage hidden erosion process and its disaster-causing effect are paid more and more attention by people. In order to deeply study the hidden erosion mechanism of saturated soil body, a test device capable of visually observing and analyzing the hidden erosion process is needed. However, the existing test device often has problems such as being unable to accurately simulate the actual working condition and the hidden erosion effect occurring in the soil body and being unable to be observed from the outside, and is difficult to meet the needs of scientific research and engineering practice. Therefore, it has important practical significance to design a simple, efficient and visual saturated soil body hidden erosion test device. SUMMARY

[0003] The purpose of the present application is to provide a new type of saturated soil body visualization hidden erosion test device, aiming at solving the problems existing in the prior art.

[0004] The embodiment of the present application provides a new type of saturated soil body visualization hidden erosion test device, which comprises a flat box body, the top of the flat box body is open, and a box cover is detachably arranged at the top of the flat box body; a water inlet is arranged at the top of the box cover and communicates with a communication cavity in the box cover, and the communication cavity is connected with a nozzle at the bottom of the box cover; a partition plate is fixed at the lower part of the inside of the flat box body through a step, and the inside of the flat box body is divided into a test space and a underflow channel by the partition plate, a plurality of leakage holes are formed in the partition plate, a monitoring unit is arranged on the partition plate between adjacent leakage holes, and the test space and the underflow channel are communicated through the leakage holes; an upstream pipe is arranged on one side of the underflow channel, a downstream pipe is arranged on the opposite side, a stop valve is arranged on the upstream pipe and the downstream pipe, and a pumping device is arranged on the upstream pipe.

[0005] Further, the material of the flat box body is transparent, and a camera is arranged outside the flat box body and faces the flat box body.

[0006] Further, a water inlet pipe is connected at the water inlet, and a flow meter and a flow regulating valve are arranged on the water inlet pipe.

[0007] Further, the leakage holes are linear, and extend in the width direction of the partition plate.

[0008] Further, a mounting base is arranged at the bottom of the flat box body, and a shallow groove accommodating the flat box body is formed in the mounting base.

[0009] Further, the bottom of the flat box is provided with a mounting base, and one corner column is fixed on the mounting base corresponding to each of the four vertical edges of the flat box, and the four corner columns enclose a deep groove for accommodating the flat box.

[0010] The utility model discloses beneficial effect is: the utility model discloses can make the section structure of saturated soil body under the action of hidden corrosion to show, thereby being convenient for directly observing from the outside.The utility model fully considers the influence of groundwater activity, therefore can more truly simulate the hidden corrosion process, can provide reliable data support for subsequent working condition. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the external structure schematic diagram of the utility model.

[0012] Figure 2 It is the section structure schematic diagram of the utility model.

[0013] Figure 3 It is the structure schematic diagram of the perspective structure of the partition plate.

[0014] Figure 4 It is the whole structure schematic diagram under another embodiment.

[0015] Figure 5 It is the structure schematic diagram of the mounting base under another embodiment.

[0016] In the drawings:

[0017] 1, flat box; 2, box cover; 3, water inlet; 4, communication cavity; 5, nozzle; 6, water inlet pipe; 7, flow meter; 8, flow regulating valve; 9, step; 10, partition plate; 11, bottom flow channel; 12, to-be-measured soil body; 13, leakage hole; 14, monitoring unit; 15, upstream pipe; 16, downstream pipe; 17, stop valve; 18, pumping device; 19, mounting base; 20, shallow groove; 21, corner column. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0019] For example, Figure 1 And Figure 2The device for visualizing the new saturated soil body hidden erosion includes a flat box body 1, the width of the flat box body 1 is less than 1 / 2 of the length of the flat box body 1, so the whole is flat, which can be beneficial to form the profile structure of the soil body hidden erosion in the box, and facilitate the morphological observation. The top of the flat box body 1 is open, and a box cover 2 is detachably arranged on the top of the flat box body 1. The inner diameter of the box cover 2 is larger than the box opening of the flat box body 1, so the box cover 2 can be directly covered on the flat box body 1. The top of the box cover 2 is provided with a water inlet 3, the water inlet 3 is communicated with a communication cavity 4 in the box cover 2, the communication cavity 4 is connected with a nozzle 5 at the bottom of the box cover 2, so that the water entering the water inlet 3 can be uniformly distributed to each nozzle 5 through the communication cavity 4, and then uniformly sprayed into the flat box body 1 by each nozzle 5. The nozzle 5 is a low-pressure nozzle 5, which can prevent the water flow of pressure injection from impacting the surface of the soil body 12 to be tested. The water inlet 3 is connected with a water inlet pipe 6, and a flow meter 7 and a flow regulating valve 8 are installed on the water inlet pipe 6. The water inlet pipe 6 is connected with a water source, which can be a municipal water pipe or a water tank. The water flow can be adjusted by the flow regulating valve 8 and the flow meter 7, so that different rainfall amounts can be simulated, and the influence of different rainfall amounts on soil body hidden erosion can be explored.

[0020] The inside of the flat box body 1 is connected with a partition plate 10 through a step 9 below, the partition plate 10 divides the inside of the flat box body 1 into a test space and a bottom flow channel 11, and the test space is used for placing the soil body 12 to be tested. A plurality of leakage holes 13 are formed in the partition plate 10, Figure 3 As shown, the monitoring unit 14 is installed on the partition plate 10 between adjacent leakage holes 13, the test space is communicated with the bottom flow channel 11 through the leakage holes 13, so that the soil body can sink downward through the leakage holes 13 during the hidden erosion process. The leakage hole 13 is linear, and the leakage hole 13 extends in the width direction of the partition plate 10, which can promote the formation of the profile hidden erosion topography. The monitoring unit 14 can be a pressure sensor and a water flow sensor, which is used for real-time monitoring of the pressure of the soil body and the flow rate of the water flow in the hidden erosion process. The monitoring unit 14 can send information to the external computer through wireless signal, or connect the external computer through wired connection, and the wire connected from the top opening of the flat box body 1 to the outside. Since the box cover 2 only plays a role in simulating rainfall, the box cover 2 can realize its function as long as it is overlapped on the flat box body 1, and it is not necessary to form a seal with the flat box body 1, so the wire can leave from the upper part of the flat box body 1.

[0021] The bottom flow channel 11 is provided with an upstream pipe 15 on one side of the flat box 1 and a downstream pipe 16 on the opposite side, and the upstream pipe 15 and the downstream pipe 16 are provided with stop valves 17, and the upstream pipe 15 is provided with a pumping device 18. The bottom flow channel 11 is used to simulate an underground river, and a directional water flow is formed in the bottom flow channel 11 to promote the formation of a hidden corrosion process. The upstream pipe 15 can be connected to a municipal water pipe, and the downstream pipe 16 is connected to a water storage tank or directly discharged into a sewer. The upstream pipe 15 and the downstream pipe 16 can also be connected to realize the recycling of limited water, and a filter, a sedimentation tank and other devices are commonly used to realize water recycling, which will not be described herein.

[0022] In order to facilitate external observation, the material of the flat box 1 is transparent, and a camera is arranged on the outside of the flat box 1 and faces the flat box 1. The camera can be arranged in multiple, corresponding to multiple sides of the flat box 1, so that the whole process of the soil in the hidden corrosion process can be recorded.

[0023] In use, the partition plate 10 is placed on the step 9 from the opening of the flat box 1, then the to-be-tested soil 12 is carefully placed on the partition plate 10, and the box cover 2 is covered. The stop valves 17 on the upstream pipe 15 and the downstream pipe 16 are closed, water is injected into the flat box 1 through the water inlet 3, so that the to-be-tested soil 12 is saturated. Then the two stop valves 17 and the pumping device 18 are opened to generate water flow in the bottom flow channel 11, and the morphological change and physical change of the soil in the hidden corrosion process are monitored through external observation and the monitoring unit 14, so as to explore the influence of the hidden corrosion on the saturated soil.

[0024] Further, the bottom of the flat box 1 is provided with a mounting base 19, as shown in Figure 1 The mounting base 19 is provided with a shallow groove 20 for accommodating the flat box 1. The mounting base 19 is fixed on the desktop through bolts on both sides of the shallow groove 20.

[0025] In another embodiment, as shown in Figure 4 and Figure 5 Each of the four vertical edges of the flat box 1 is fixed with an angle column 21 on the mounting base 19, and the four angle columns 21 enclose a deep groove for accommodating the flat box 1, and the fixing effect of the deep groove on the flat box 1 is better.

[0026] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting.

Claims

1. A new type of saturated soil body visualized potential erosion test device, characterized in that, The utility model provides a kind of water quality testing device, including flat box, the top of flat box is open, and detachably provided with lid on the top of flat box;The top of lid is equipped with water inlet, and water inlet is communicated with the communicating chamber in the inside of lid, and communicating chamber is connected with nozzle in the bottom of lid;The inside of flat box is fixed with partition plate by step below, and partition plate divides the inside of flat box into test space and bottom channel, multiple leakage holes are opened in the partition plate, and monitoring unit is installed on the partition plate between adjacent leakage holes, and test space is communicated with bottom channel by leakage hole;Bottom channel is equipped with upstream pipe on one side of flat box, and downstream pipe is installed on opposite side, and upstream pipe and downstream pipe are all equipped with stop valve, and pumping device is installed on upstream pipe.

2. The new visualizing subsurface erosion test device for saturated soil according to claim 1, characterized in that, The material of the flat box is transparent, and a camera is arranged on the outside of the flat box and faces the flat box.

3. The new type of saturated soil body visualized latent erosion test device according to claim 1, characterized in that, A water inlet pipe is connected to the water inlet, and a flow meter and a flow regulating valve are installed on the water inlet pipe.

4. The new type of saturated soil body visualized subro sion test device according to claim 1, characterized in that, The leakage holes are linear, and extend in the width direction of the partition plate.

5. The new type of saturated soil body visualized subro sion test device according to claim 1, characterized in that, A mounting base is arranged at the bottom of the flat box, and a shallow groove for accommodating the flat box is formed in the mounting base.

6. The new visualizing subsurface erosion test device for saturated soil according to claim 1, wherein, A mounting base is arranged at the bottom of the flat box, and four corner columns are fixed on the mounting base corresponding to the four vertical edges of the flat box, and the four corner columns enclose a deep groove for accommodating the flat box.

Images