A concealed pipe drainage seepage box simulation device

Abstract

The present invention relates to the technical field of concealed pipe drainage, and provides a concealed pipe drainage seepage box simulation device. The device comprises: a box body, a layer of quartz sand is laid on the bottom of the box body, a concealed pipe is placed on the quartz sand, quartz sand filter material is filled on both sides of the concealed pipe, a layer of gravel is laid on the top of the concealed pipe, non-woven fabric is wrapped around the gravel and quartz sand filter material, and soil is filled on the non-woven fabric and quartz sand; water is sprayed evenly to the soil in the box body through the water inlet, and the water in the soil enters the concealed pipe through the gravel, quartz sand filter material and non-woven fabric, and the concealed pipe introduces the water flow into the water collection tank through the water outlet; and the concealed pipes of different materials are replaced to simulate seepage. The beneficial effect is that the device can simulate the field concealed pipe project, the device is small in size, the filling is simple and labor-saving, and a combination test of multiple concealed pipe materials can be carried out at one time, and the test effect is good. The device can evaluate the drainage effect of concealed pipes of different materials under the same soil conditions.

Description

Technical Field

[0001] The invention relates to the technical field of concealed pipe drainage, and in particular to a concealed pipe drainage seepage box simulation device. Background Art

[0002] The application of underground pipe salt drainage technology is an effective way to solve the frequent salt return caused by high groundwater levels. However, in actual applications, soil particles will cause underground pipes to clog. Wrapping filter materials on the outside of underground pipe geotextiles can alleviate the clogging process and ensure long-term salt drainage from underground pipes. Different outer packaging materials for underground pipes have different thicknesses, permeabilities, and hydrophilicity, which will affect the drainage effect of underground pipes. By comparing the effects of different underground pipe materials on drainage effects, the best outer packaging materials can be better selected.

[0003] At present, the commonly used test methods include field test, seepage tank simulation test, etc. Field test is the most practical, but the layout of field pipes is greatly affected by factors such as terrain and facilities, there are many uncontrollable factors, the test conditions are difficult to control, and the test cycle is long; the seepage tank simulation test can better simulate the field pipe engineering, but the device size is large, filling is time-consuming and labor-intensive, repeated tests have large differences, and it is difficult to conduct a combination test of multiple pipe materials. Summary of the invention

[0004] The purpose of the present invention is to provide a concealed pipe drainage seepage box simulation device to solve the technical problems existing in the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a concealed pipe drainage seepage box simulation device, comprising: a box body, a layer of quartz sand is laid on the bottom of the box body, a concealed pipe is placed on the quartz sand, quartz sand filter material is filled on both sides of the concealed pipe, a layer of gravel is laid on the top of the concealed pipe, non-woven fabric is wrapped around the gravel and quartz sand filter material, and soil is filled on the non-woven fabric and quartz sand; water is evenly sprayed to the soil in the box body through a water inlet, water in the soil passes through the non-woven fabric, gravel and quartz sand filter material into the concealed pipe, and the concealed pipe introduces water flow into a water collecting tank through a water outlet; the concealed pipes of different materials are replaced to perform seepage simulation.

[0006] In an optional embodiment, the buried depth of the concealed pipe is 50 cm, the thickness of the gravel is 10 cm, the thickness of the soil is 37 cm, and the diameter of the concealed pipe is 3 cm.

[0007] In an optional embodiment, a water supply system is provided on the upper portion of the box body, and an overflow port is provided in the water supply system.

[0008] In an optional embodiment, a first partition and a second partition are provided in the box body, and a supporting steel frame net is respectively provided between the first partition, the second partition and between the first partition and the side wall of the box body, and non-woven fabrics are wrapped around the outside of the three supporting steel frame nets.

[0009] In an optional embodiment, a pull-out steel frame net is arranged inside each supporting steel frame net, and a first concealed pipe, a second concealed pipe and a third concealed pipe are arranged inside each of the pull-out steel frame nets;

[0010] Wherein, the first and third concealed tubes have the same radius but different materials, and the first and second concealed tubes have different radius but the same material;

[0011] Each of the pull-out steel frame nets can drive the corresponding first concealed pipe, second concealed pipe and third concealed pipe to be pulled out from the box.

[0012] In an optional embodiment, each of the pull-out steel frame nets and the first, second and third concealed pipes are filled with surrounding quartz sand, the thickness of the surrounding quartz sand is the same as the diameter of the corresponding concealed pipe, and an upper layer of gravel is filled above the surrounding quartz sand, and the upper layer of gravel is in contact with the upper wall of the pull-out steel frame net.

[0013] In an optional embodiment, the outsides of the first concealed tube, the second concealed tube and the third concealed tube are respectively wrapped with non-woven fabrics, and are respectively connected to the first water collecting tank, the second water collecting tank and the third water collecting tank through a water outlet.

[0014] In an optional embodiment, a water leakage net is arranged in the box above the soil, and a movable sprinkler is arranged above the water leakage net.

[0015] In an optional embodiment, water leakage holes are evenly arranged on the supporting steel frame net and the pulling steel frame net.

[0016] In an optional embodiment, a side wall of the box body is provided with a plurality of openings cooperating with the pull-out steel frame net.

[0017] The beneficial effects of the present invention are:

[0018] (1) The device can simulate the field concealed pipe project. The device is small in size, simple and labor-saving to fill, and can be used to test a variety of concealed pipe materials with good test results. The device can be disassembled and replaced with concealed pipes of different materials to evaluate the drainage effects of concealed pipes of different materials.

[0019] (2) The device is provided with two equidistant partitions and three sets of pull-out steel frame nets. Each steel frame net is provided with concealed pipes of the same or different materials and optional diameters. Combined with different outer packaging materials, multiple concealed pipe material combination tests can be conducted at one time, with good test results, and the tests are conducted under the same soil conditions. It is particularly important to point out that the pull-out steel frame net can be used to pull out and replace concealed pipes of other materials and diameters, and cooperate with outer packaging materials, thereby improving the test efficiency through a simple structural setting.

[0020] (3) The device ensures that the humidity of different parts of the soil is the same through the setting of mobile nozzles, water leakage nets and partitions, ensuring the consistency of test conditions and improving the accuracy of test verification results. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A cross-sectional view of a concealed pipe drainage seepage box simulation device provided in one embodiment of the present invention Figure 1 .

[0023] Figure 2 A cross-sectional view of a concealed pipe drainage seepage box simulation device provided in one embodiment of the present invention Figure 2 .

[0024] Figure 3 A schematic diagram of a concealed pipe drainage seepage box simulation device provided in another embodiment of the present invention Figure 1 .

[0025] Figure 4 A schematic diagram of a concealed pipe drainage seepage box simulation device provided in another embodiment of the present invention Figure 2 .

[0026] Figure 5 A top view of a concealed pipe drainage seepage box simulation device provided in another embodiment of the present invention.

[0027] Figure 6 for Figure 5 AA section view.

[0028] Figure 7 for Figure 6 Schematic diagram of the partial enlarged structure at point C in the middle.

[0029] Figure 8 A schematic structural diagram of a pull-out steel frame net provided in one embodiment of the present invention.

[0030] Wherein, the accompanying drawings are marked as follows:

[0031] 1-water inlet; 2-overflow, 3-soil, 4-non-woven fabric, 5-gravel, 6-blind pipe, 7-quartz sand, 8-water outlet, 9-water collecting tank;

[0032] 11-nozzle, 111-first partition, 112-second partition, 12-leakage net; 21-overflow port, 31-soil, 41-non-woven fabric, 42-supporting steel frame net, 51-upper layer of gravel, 52-surrounding quartz sand, 53-pull-out steel frame net, 61-first concealed pipe, 62-second concealed pipe, 63-third concealed pipe, 71-quartz sand, 91-first water collecting tank, 92-second water collecting tank, 93-third water collecting tank. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly or indirectly located on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the accompanying drawings and are only for the convenience of description and cannot be understood as limitations on the present technical solution. The terms "first" and "second" are only used for the convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0035] Embodiment 1

[0036] Please see attached Figure 1-2 The purpose of this embodiment is to provide a simulation device for a seepage box for concealed drainage, including: a box body, a layer of quartz sand 7 is laid on the bottom of the box body, a concealed pipe 6 is placed on the quartz sand 7, quartz sand filter material is filled on both sides of the concealed pipe 6, a layer of gravel 5 is laid on the top of the concealed pipe 6, non-woven fabric 4 is wrapped around the gravel 5 and the quartz sand filter material, and soil 3 is filled on the non-woven fabric 4 and the quartz sand 7; water is sprayed uniformly to the soil 3 in the box body through the water inlet 1, and the water in the soil 3 enters the concealed pipe 6 through the non-woven fabric 4, gravel 5 and quartz sand filter material, and the concealed pipe 6 introduces the water flow into the water collection box 9 through the water outlet 8; the concealed pipe 6 of different materials is replaced to perform seepage simulation, and the permeability of the concealed pipes of different materials is compared. In this embodiment, the outside of the concealed pipe 6 is evenly wrapped with non-woven fabric to prevent the filter material from clogging the concealed pipe 6.

[0037] It should be pointed out that a movable nozzle is provided above the water inlet 1 to spray water evenly onto the soil 3 in the box to ensure that the water flow density and humidity in each part of the soil 3 are the same. In addition, it is worth mentioning that during each test, the blind pipes of different materials can be replaced, and the other conditions are the same to verify the drainage of the blind pipes of different materials; different filter materials can also be included under the conditions of the same material and diameter blind pipes, that is, the sand and gravel can be replaced to verify the drainage of the filter material. The device can simulate the field blind pipe project, the device is small in size, and the filling is simple and labor-saving. A variety of blind pipe material combination tests can be carried out at one time, and the test effect is good. For the above device, the soil 3 needs to be replaced during each test.

[0038] In a preferred embodiment, the buried depth of the concealed pipe 6 is 50 cm, the thickness of the gravel 5 is 10 cm, the thickness of the soil 3 is 37 cm, and the diameter of the concealed pipe 6 is 3 cm. The above settings simulate the concealed pipe project in the field.

[0039] Furthermore, a water supply system is provided on the upper part of the box body, and an overflow port 2 is provided in the water supply system to prevent water from overflowing. Water is injected into the soil 3 by means of a pump body. After the box body is filled with soil, it is placed overnight to reach a balanced state.

[0040] Embodiment 2

[0041] Please see attached Figure 3-8 The purpose of this embodiment is to provide a concealed pipe drainage seepage box simulation device, in which a first partition 111 and a second partition 112 of the same height are arranged in the box, and the distance between the first partition 111 and the second partition 112 is equal to the distance between the two partitions and the side wall of the box, and the interior of the box is equidistantly divided into three parts, so as to ensure that the humidity and other conditions of each part are the same after the box is filled with soil 3 and injected with water. A supporting steel frame net 42 is respectively arranged between the first partition 111 and the second partition 112 and between them and the side wall of the box, and the three supporting steel frame nets 42 are arranged in the middle of the three equidistantly divided parts, and the outside of the three supporting steel frame nets 42 are all wrapped with non-woven fabrics 41, and each supporting steel frame net 42 is evenly provided with water leakage holes to ensure the passage of water flow without affecting the test effect.

[0042] Specifically, as one of the most important contributions of the present invention, a pull-out steel frame net 53 is provided inside each supporting steel frame net 42, and a first concealed tube 61, a second concealed tube 62 and a third concealed tube 63 are provided inside each pull-out steel frame net 53, respectively.

[0043] In a specific embodiment, the first concealed tube 61 and the third concealed tube 63 have the same radius and different materials, and the first concealed tube 61 and the second concealed tube 62 have different radius and the same material; wherein, each pull-out steel frame net 53 and the first concealed tube 61, the second concealed tube 62 and the third concealed tube 63 are filled with surrounding quartz sand 52, the thickness of the surrounding quartz sand 52 is the same as the corresponding concealed tube diameter, and the upper layer of gravel 51 is filled above the surrounding quartz sand 52, and the upper layer of gravel 51 is in contact with the upper wall of the pull-out steel frame net 53. Each pull-out steel frame net 63 can drive the corresponding first concealed tube 61, the second concealed tube 62 and the third concealed tube 63 to be pulled out of the box.

[0044] In another specific embodiment, the first concealed tube 61 and the third concealed tube 63 have the same radius and are made of the same material, while the first concealed tube 61 and the second concealed tube 62 have different radii and are made of the same material; wherein, each pull-out steel frame net 53 and the first concealed tube 61, the second concealed tube 62 and the third concealed tube 63 are filled with surrounding quartz sand 52, and the thickness of the surrounding quartz sand 52 is the same as the corresponding concealed tube diameter, and the surrounding quartz sand 52 of the first concealed tube 61 and the third concealed tube 63 are filled with an upper layer of gravel 51 and another filter material, such as straw, respectively; the surrounding quartz sand 52 of the first concealed tube 61 and the second concealed tube 62 are filled with the same filter material, an upper layer of gravel 51 or another type of straw; the filled filter material or the upper layer of gravel 51 is in contact with the upper wall of the pull-out steel frame net 53.

[0045] Through the above test method, the drainage performance of different concealed pipe materials and diameters can be verified at the same time, and the drainage performance of different filter materials can also be verified at the same time. Under the premise of ensuring the same test conditions, the test efficiency is greatly improved, and the test results can be clearly compared to accurately obtain data. Similarly, the outside of the above concealed pipe 6 is evenly wrapped with non-woven fabric to prevent the filter material from clogging the concealed pipe 6.

[0046] It is particularly important to point out that each pull-out steel frame net 63 can drive the corresponding first concealed pipe 61, second concealed pipe 62 and third concealed pipe 63 to be pulled out from the box, and water leakage holes are evenly arranged on the pull-out steel frame net 63. This structure greatly facilitates the replacement of concealed pipes and filter materials. As one of the main inventive points of the present invention, under the same soil 3 condition, concealed pipes 6 of different materials can be combined at the same time to conduct simulation tests, thereby improving test efficiency.

[0047] Furthermore, the outsides of the first concealed tube 61, the second concealed tube 62 and the third concealed tube 63 are respectively wrapped with non-woven fabrics, and are respectively connected to the first water collecting tank 91, the second water collecting tank 92 and the third water collecting tank 93 through a water outlet, and the drainage effect is judged by the amount of water in each water collecting tank.

[0048] It should also be pointed out that a water leakage net is arranged above the soil 3 in the box, and a mobile nozzle is arranged above the water leakage net, and the mobile nozzle sprays the water leakage net 12 according to a circulation trajectory, further improving the uniformity of water injection and ensuring the test effect. In addition, a plurality of openings cooperating with the pull-out steel frame net 53 are arranged on one side wall of the box to facilitate the replacement of concealed pipes and filter materials.

[0049] Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A concealed pipe drainage seepage box simulation device, include: A box body, wherein a layer of quartz sand is laid on the bottom of the box body, a concealed pipe is placed on the quartz sand, quartz sand filter material is filled on both sides of the concealed pipe, a layer of gravel is laid above the concealed pipe, non-woven fabric is wrapped around the gravel and quartz sand filter material, and soil is filled on the non-woven fabric and quartz sand; It is characterized in that water is sprayed uniformly to the soil in the box through the water inlet, the water in the soil passes through the non-woven fabric, gravel and quartz sand filter material into the concealed pipe, and the concealed pipe introduces the water flow into the water collecting tank through the water outlet; the concealed pipes of different materials are replaced to perform seepage simulation; The box body is provided with a first partition and a second partition, a supporting steel frame net is respectively provided between the first partition and the second partition and between the first partition and the side wall of the box body, and the outside of the three supporting steel frame nets is wrapped with non-woven fabrics; The distance between the first partition and the second partition is equal to the distance between the two partitions and the side wall of the box body, and the interior of the box body is evenly divided into three parts; three supporting steel frame nets are arranged in the middle of the three evenly divided parts; Each supporting steel frame net is provided with a pull-out steel frame net inside, and each of the pull-out steel frame nets is provided with a first concealed pipe, a second concealed pipe and a third concealed pipe inside respectively; Wherein, the first and third concealed tubes have the same radius but different materials, and the first and second concealed tubes have different radius but the same material; Each of the pull-out steel frame nets can drive the corresponding first concealed pipe, second concealed pipe and third concealed pipe to be pulled out from the box; Surrounding quartz sand is filled between each of the pull-out steel frame nets and the first, second and third concealed pipes, the thickness of the surrounding quartz sand is the same as the diameter of the corresponding concealed pipe, and an upper layer of gravel is filled above the surrounding quartz sand, and the upper layer of gravel is in contact with the upper wall of the pull-out steel frame net; The supporting steel frame net and the pulling steel frame net are evenly provided with water leakage holes; A plurality of openings cooperating with the drawable steel frame net are arranged on one side wall of the box body.

2. The concealed pipe drainage seepage box simulation device as claimed in claim 1, It is characterized in that The buried depth of the concealed pipe is 50 cm, the thickness of the gravel is 10 cm, the thickness of the soil is 37 cm, and the diameter of the concealed pipe is 3 cm.

3. The concealed pipe drainage seepage box simulation device according to claim 1, It is characterized in that The upper part of the box body is provided with a water supply system, and the water supply system is provided with an overflow port.

4. The concealed pipe drainage seepage box simulation device according to claim 1, It is characterized in that The first concealed tube, the second concealed tube and the third concealed tube are respectively wrapped with non-woven fabrics on the outside, and are respectively connected to the first water collecting tank, the second water collecting tank and the third water collecting tank through a water outlet.

5. The concealed pipe drainage seepage box simulation device according to claim 1, It is characterized in that A water leakage net is arranged above the soil in the box, and a movable sprinkler is arranged above the water leakage net.

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