CN216209128U

CN216209128U - Soil disintegration tester simulating multiple working conditions

Info

Publication number: CN216209128U
Application number: CN202122626580.3U
Authority: CN
Inventors: 廖丽萍; 刘政委; 赵瑞华; 韦文智; 林思维; 邓枝聪; 龚明浩
Original assignee: Guangxi University
Current assignee: Guangxi University
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-04-05
Anticipated expiration: 2031-10-29

Abstract

The utility model provides a soil disintegration tester for simulating multiple working conditions, which comprises a lifting platform, wherein the lifting platform is arranged below a support frame, a disintegration groove is arranged on the lifting platform, a lower drainage pipe is arranged at the lower part of one side of the disintegration groove, a water injection pipe is connected with the disintegration groove, a data acquisition system comprises a tension sensor and a server, the tension sensor is connected with the server, a grid frame is a cubic frame and is suspended above the disintegration groove through a lifting rope, the tension sensor is arranged above the grid frame and is arranged on the lifting rope, a grid plate is arranged at the bottom of the grid frame, and the soil disintegration tester also comprises a plurality of rainfall sprayers and cameras which are arranged on the support frame. The soil disintegration tester can simulate the disintegration of a soil sample under various working conditions such as still water, rainfall, underground water level lifting and the like; the disintegration amount, the disintegration rate and the cloud picture of the dynamic disintegration process of the soil sample can be obtained by acquiring the gravity variation and the image thereof in the disintegration process of the soil sample in real time. The soil disintegration tester has the advantages of simple structure, multiple functions, small size and convenient disassembly.

Description

Soil disintegration tester simulating multiple working conditions

Technical Field

The utility model belongs to the technical field of soil disintegration, and particularly relates to a soil disintegration tester for simulating multiple working conditions, which is used for measuring the disintegration of soil.

Background

The soil disintegration refers to the phenomenon that soil with a certain volume is subjected to water absorption and dispersion after being soaked in water and is cracked into fragments and granules. The soil disintegration is closely related to the occurrence process of soil erosion, is one of necessary conditions for the occurrence of the soil erosion, and is an important physical index for evaluating the severity of the soil erosion. Disintegration is an important property of rock-soil mass, and some slope disasters are often related to soil disintegration. However, the conditions for soil disintegration in natural environment are quite complex, and the research on soil disintegration only under still water conditions has great limitations. A large number of examples show that rainfall is an important reason for triggering geological disasters such as landslide and debris flow, and under the action of rainwater, soil particle movement causes changes of internal mechanical properties and structures of soil bodies, so that stability is reduced. Meanwhile, rainfall often causes the change of underground water level, and has certain influence on the disintegration of soil. Therefore, the research on the soil-water effect in the rainfall process is an important part for researching the slope stability. In addition to qualitatively describing the disintegration phenomenon of soil, the current research also carries out quantitative analysis by indexes such as disintegration amount and disintegration rate.

In the prior art, a floating drum method and an electronic balance method are generally adopted to carry out a soil disintegration experiment, but the floating drum method is adopted, so that the floating drum is easy to float up and down in the disintegration process, and a large error exists in reading; it is difficult to read a large amount of data at the initial stage of disintegration using the electronic balance method. In the prior art, the experimental process is single, so that the disintegration data of the soil in the static water can be only obtained, and the data of the soil sample at the moment of entering the water cannot be accurately recorded. Most of the existing instruments can only meet the disintegration under the condition of still water, and can not consider the influence of rainfall and underground water level change on soil sample disintegration at the same time.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a soil disintegration tester for simulating various working conditions, which has the following specific scheme:

the utility model provides a soil of multiple operating mode of simulation tester that disintegrates, includes lift platform, support frame, net frame, grid plate, the groove of disintegrating, data acquisition system and the water injection pipe that is used for supplying water, lift platform sets up in the support frame below, and the groove of disintegrating sets up on lift platform, is equipped with down the drain pipe in groove one side lower part of disintegrating, and the water injection union coupling groove of disintegrating, data acquisition system include force sensor and server, force sensor connection server, and the net frame is the cube frame, hangs in the groove top of disintegrating through the lifting rope, and force sensor establishes in net frame top to install on the lifting rope, the grid plate is installed in the net frame bottom, and force sensor is connected to the server.

Further, still include a plurality of rainfall shower nozzles and camera, a plurality of rainfall shower nozzles symmetry respectively set up at the support frame, and a plurality of cameras aim at the groove that disintegrates respectively to install on the support frame.

Furthermore, the support frame is formed by connecting two intersected door frames, each door frame comprises a transverse connecting rod, a vertical rod, a reinforcing rod and a tripod, the top ends of the two vertical rods of each door frame are respectively connected with the two ends of the transverse connecting rod and are fixed through the reinforcing rods which are detachably connected, and the bottom of the two vertical rods of each door frame is connected with the tripod.

Further, lift platform includes base, scissors support, workstation, dead lever and operating screw, workstation and base both sides are equipped with the slide rail of symmetry respectively, and the slide rail of workstation and base both sides is connected respectively to two scissors support tops and bottom, and two dead lever both ends are fixed respectively between two scissors supports, and two dead lever coupling nuts are passed in the activity of operating screw one end, and the other end is connected with the handle.

Further, the disintegration groove is made of transparent materials, the transparent materials are transparent glass or transparent acrylic materials, and an upper drainage pipe is arranged at the upper part of the disintegration groove.

Furthermore, the grid size of the grid plate is selected according to the test requirement, the grid plate is square, arc-shaped notches are formed in the four ends of the grid plate respectively, and the side length of the grid plate is larger than that of the grid frame.

Further, the lower drainage pipe is provided with a valve.

THE ADVANTAGES OF THE PRESENT INVENTION

The soil disintegration tester disclosed by the utility model has the advantages that the lifting platform is used for immersing the soil sample into water at a constant speed, so that the influence of water-entering impact on the soil sample is reduced, and the disintegration data at the initial stage of water immersion can be stably acquired; the disintegration amount, the disintegration rate and a cloud picture of the dynamic disintegration process of the soil sample can be obtained by acquiring the gravity variation and the image thereof in the disintegration process of the soil sample in real time; the disintegration of the soil sample under various working conditions such as still water, rainfall, underground water level lifting and the like can be simulated; this tester that disintegrates simple structure, the function is various, and the volume is less, convenient dismantlement.

Drawings

Fig. 1 is a schematic view of the overall structure of the soil disintegration tester of the present invention.

Fig. 2 is a schematic front view of fig. 1.

Fig. 3 is a schematic view of the grid plate of fig. 1.

In the figure:

1. a support frame; 101. a transverse connecting rod; 102. erecting a rod; 103. a reinforcing bar; 104. a tripod; 2. a camera; 3. a rainfall sprayer; 4. a tension sensor; 5. a server; 6. a grid frame; 7. a disintegration tank; 8. a grid plate; 9. a lower drainage pipe; 10. an upper drainage pipe; 11. a valve; 12. a lifting platform; 121. a work table; 122. a base; 123. a scissor bracket; 124. fixing the rod; 125. a slide rail; 126. operating the screw; 13. a water injection pipe.

Detailed Description

The utility model will be further explained and illustrated with reference to the drawings and the embodiments, which should be noted that the embodiments are not intended to limit the scope of the utility model.

As shown in fig. 1 to 3, the soil disintegration tester for simulating multiple working conditions provided by the utility model comprises a lifting platform 12, a support frame 1, a grid frame 6, a grid plate 8, a disintegration tank 7, a data acquisition system, a rainfall spray head 3, a camera 2 and a water injection pipe 13 for supplying water.

The support frame 1 is vertically intersected by two identical door frames and is hinged at the intersected position through a pin shaft, each door frame comprises a transverse connecting rod 101, an upright rod 102, a reinforcing rod 103 and a tripod 104, the top end of each upright rod 102 of each door frame is hinged with the two ends of the transverse connecting rod 101 respectively, the reinforcing rods 103 which are connected in a detachable mode are fixed, specifically, one end of each transverse connecting rod 101 is connected with one end of each reinforcing rod 103 which is connected in a detachable mode, the other end of each reinforcing rod is connected with the top end of each upright rod 102, and the support frame aims to facilitate dismounting and storage. The bottom of the two uprights 102 of each door frame is connected to a tripod 104 to enhance the stability of the support 1. Eight rainfall sprayers are arranged, and are respectively arranged on two sides of each transverse connecting rod 101 in pairwise symmetry by taking the vertical intersection of the two door frames as the center.

The lifting platform 12 is arranged below the support frame 1, preferably, the lifting platform 12 is arranged right below the vertical intersection of the two frames, the disintegration groove 7 is arranged on the lifting platform 12, specifically, the lifting platform 12 comprises a workbench 121, a base 122, a scissors bracket 123, a fixing rod 124, a sliding rail 125 and an operating screw 126, the two sides of the workbench 121 and the base 122 are respectively provided with a symmetrical sliding rail 125, preferably, the sliding rail 125 is plate-shaped, one end of the sliding rail 125 is provided with a sliding groove, one end of the top and the bottom of the two scissors bracket 123 is respectively fixedly connected to one end of the sliding rail 125 at the two sides of the workbench 121 and the base 122, the other end of the two scissors bracket 123 is respectively slidably connected to the sliding groove at the other end of the sliding rail 125 at the two sides of the workbench 121 and the base 122, and the aim of providing a moving space for the scissors bracket 123 when the height of the lifting platform 12 is conveniently adjusted. Two ends of the two fixing rods 124 are respectively fixed between the ends of the two scissors brackets 123, one end of the operating screw 126 respectively movably penetrates through the two fixing rods 124 to connect with the nut, and the other end is connected with the handle. The disintegration tank 7 is placed on the workbench 121, an upper drainage pipe 10 and a lower drainage pipe 9 are respectively arranged at the upper part and the lower part of one side of the disintegration tank 7, and the lower drainage pipe 9 is provided with a valve 11. The upper water discharge pipe 10 aims at controlling the final height of the water level, the height of the upper water discharge pipe 10 of the disintegration groove 7 is controlled by adjusting the height of the lifting platform 12 so as to achieve the purpose of controlling the immersion depth of the soil sample, and finally, after the water level rises to be level with the upper water discharge pipe 10, water flows out through the upper water discharge pipe 10, and the water level in the disintegration groove 7 is not changed any more. Preferably, the disintegration groove 7 is made of a transparent material, which is transparent glass or a transparent acryl material.

The water injection pipe 13 is connected with the disintegration tank 7, specifically, one end of the water injection pipe 13 is connected with a water tap, and the other end is connected into the disintegration tank 7. The number of the cameras 2 is four, each camera 2 is respectively installed in the middle of each vertical rod 102 and is respectively aligned to the position of the disintegration groove 7, and the camera 2 is used for collecting images in the soil sample disintegration process.

The data acquisition system comprises a tension sensor 4 and a server 5, wherein the tension sensor 4 is connected with the server 5 through a data line. The tension sensor 4 is used for collecting the gravity data of the soil sample in the test process in real time. The server 5 is used for acquiring and storing the real-time acquired data of the tension sensor 4. Grid 6 is the cube frame, hangs grid 6 directly over slot 7 that disintegrates through the lifting rope earlier, establishes the pull sensor 4 correspondence in the top of grid 6 to install on the lifting rope, grid 8 is installed in grid 6 bottoms, and grid 8's effect lies in holding the soil sample. Preferably, the grids of the grid plate 8 are squares, the side length of each grid is 2-10 mm, the grid plate 8 is selected according to test requirements and is square, arc-shaped notches are formed in the four ends of the grid plate, and the side length of the grid plate 8 is larger than that of the grid frame 6.

When the disintegration of the simulated soil sample under the combined action of rainfall and underground water level rise, firstly closing the valve 11, injecting water into the disintegration tank 7 through the water injection pipe 13, placing the prepared soil sample on the grid plate 8, and adjusting the height of the workbench 121 of the lifting platform 12 by rotating the operation screw 126 to ensure that the water level in the disintegration tank 7 is close to the bottom of the grid plate 8; opening the camera 2 and the tension sensor 4, and starting the rainfall sprayer 3; along with the rainfall, the water level in the disintegration tank 7 gradually rises until the test is finished when the soil sample is basically disintegrated.

In the experimental process, the rainfall capacity and the raindrop size of the rainfall nozzle 3 can be adjusted according to the actual requirements of the experiment, and the water injection quantity into the disintegration tank 7 through the water injection pipe 13 can be controlled to control the rising speed of the water level so as to carry out a plurality of experiments under different parameters.

The simulated operating conditions in this embodiment include, but are not limited to: the soil sample is disintegrated at different immersion depths under the condition of still water; the soil sample is disintegrated under the action of rainfall only; the disintegration of the soil sample when only the underground water level rises and falls; disintegration of the soil sample when rainfall and groundwater level rise and fall occur simultaneously, and the like. The soil disintegration tester of the embodiment can enable the soil sample to be immersed into water at a constant speed, and can stably collect a large amount of data in the water entering moment. Meanwhile, high-definition images in the soil sample disintegration process can be collected.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.

Claims

1. The utility model provides a soil of multiple operating mode of simulation tester that disintegrates, its characterized in that, includes lift platform, support frame, grid frame, waffle slab, the groove that disintegrates, data acquisition system and the water injection pipe that is used for supplying water, lift platform sets up in the support frame below, and the groove that disintegrates sets up on lift platform, is equipped with down the drain pipe in groove one side lower part that disintegrates, and the water injection union coupling groove that disintegrates, data acquisition system include force sensor and server, force sensor connection server, and the grid frame is the cube frame, hangs in the groove top that disintegrates through the lifting rope, and force sensor establishes in the grid frame top to install on the lifting rope, the waffle slab is installed in the grid frame bottom.

2. The soil disintegration tester for simulating multiple working conditions according to claim 1, further comprising a plurality of rainfall sprayers and cameras, wherein the rainfall sprayers are symmetrically arranged on two sides of the top of the support frame respectively, and the cameras are aligned with the disintegration grooves respectively and mounted on the support frame.

3. The soil disintegration tester as claimed in claim 1, wherein the support frame is formed by connecting two intersecting door frames, each door frame includes a cross bar, a vertical bar, a reinforcing bar and a tripod, the top ends of the two vertical bars of each door frame are respectively connected with the two ends of the cross bar and fixed by the reinforcing bar which can be detachably connected, and the bottom of the two vertical bars of each door frame is connected with the tripod.

4. The soil disintegration tester of claim 1, wherein the lifting platform comprises a base, two scissor supports, a workbench, fixing rods and an operating screw, wherein the workbench and the base are respectively provided with symmetrical slide rails at two sides, the top and the bottom of the two scissor supports are respectively connected with the slide rails at two sides of the workbench and the base, two ends of the two fixing rods are respectively fixed between the two scissor supports, one end of the operating screw movably penetrates through the two fixing rod connecting nuts, and the other end of the operating screw is connected with a handle.

5. The soil disintegration tester of claim 1, wherein the disintegration tank is made of transparent material, the transparent material is transparent glass or transparent acrylic material, and an upper drain pipe is further arranged on the upper portion of the disintegration tank.

6. The soil disintegration tester as claimed in claim 1, wherein the grid size of the grid plate is selected according to the test requirements, the grid plate is square, the four ends of the grid plate are respectively provided with arc-shaped notches, and the side length of the grid plate is greater than that of the grid frame.

7. The soil disintegration tester as claimed in claim 1, wherein the drain pipe is provided with a valve.