Soil internal erosion deformation response simulation device
Technical Field
The utility model relates to the field of soil erosion response simulation, in particular to a soil internal erosion deformation response simulation device.
Background
Infiltration failure, one of the major forms of instability in earth and rockfill dams and damming bodies, occurs frequently in poorly graded, cohesionless soils. Under the action of osmotic damage, fine particles in poor-graded non-cohesive soil are easily eroded by water flow, so that the physical and mechanical properties of a soil body are influenced, and even the structure of the soil body is damaged. The erosion characteristics of the poor-grading cohesionless soil material under the action of different seepage fields are quickly determined, the response after erosion is effectively simulated and analyzed, and the method has important significance on seepage safety assessment and emergency treatment of dam foundations, dam plugs and the like.
At present, the existing soil erosion response simulation equipment has a complex structure, and the deformation condition of soil seepage erosion cannot be effectively observed.
Therefore, it is necessary to develop a simulation apparatus for simulating erosion deformation response in soil to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a soil body internal erosion deformation response simulation device, which solves the problems that the soil body erosion response simulation equipment proposed in the background technology has a complex structure and cannot effectively observe the deformation condition of soil body seepage erosion.
In order to achieve the above purpose, the utility model provides the following technical scheme: a soil internal erosion deformation response simulation device comprises a transparent simulation box, wherein a flow guide box is arranged at the bottom of the transparent simulation box, supporting legs are fixed on the outer edge of the bottom of the flow guide box at equal intervals, a water collecting box is arranged at the bottom of the flow guide box, a flow guide pipe is arranged between the flow guide box and the water collecting box, an inner cavity of the flow guide box is communicated with an inner cavity of the transparent simulation box, a first interception net is fixed in an upper side port of the flow guide box, a sandstone layer is arranged on the upper side of the first interception net and nested in the transparent simulation box, a second interception net is fixed on the upper side of the sandstone layer, a soil sample layer is arranged on the upper side of the second interception net, a soil pressure box, a pore water pressure gauge and a layered settlement gauge are sequentially buried in the soil sample layer from bottom to top, water distribution pipes are fixed on the inner wall of the top of the transparent simulation box at equal intervals, the water distribution hole has been seted up to equidistant the surface of water distribution pipe, and is a plurality of the left end of water distribution pipe is connected with inlet manifold jointly, the bottom of header tank is provided with the bottom plate, the lower extreme and the bottom plate of supporting legs are connected, the feed tank is installed to the upside left part of bottom plate, install the liquid pump on the feed tank, the input and the feed tank of liquid pump are connected, the output of liquid pump is connected with the raceway, the upper end of raceway is stretched into transparent simulation incasement, the upper end and the inlet manifold of raceway are connected, platform frame is installed to the upside right part of bottom plate, the last computer control monitoring facilities of installing of platform frame.
Preferably, the soil pressure cell, the pore water pressure gauge, the layered settlement gauge and the liquid pump are electrically connected with the computer-controlled monitoring equipment.
Preferably, the bottom of the transparent simulation box is fixedly connected with the upper side of the flow guide box in a sealing manner.
Preferably, the flow guide box is conical, the upper end of the flow guide pipe is connected with the bottom of the flow guide box, and the lower end of the flow guide pipe is connected with the water collecting tank.
Preferably, the first interception net and the second interception net are both made of stainless steel.
Preferably, the bottom of the first intercepting net is fixed with reinforcing rods at equal intervals, and two ends of each reinforcing rod are connected with the inner wall of the flow guide box.
Preferably, the transparent simulation box is made of high-strength toughened glass, and the flow guide box is made of stainless steel.
Preferably, the flow guide box is provided with support rods in all directions, the lower end of the support rod is connected with the bottom plate, the support rod is provided with a high-speed camera, and the high-speed camera is electrically connected with the computer control monitoring equipment.
In the technical scheme, the utility model provides the following technical effects and advantages:
1. by adopting the transparent simulation box, the height and sedimentation change conditions of the soil sample layer can be observed from four sides, a soil pressure cell, a pore water pressure gauge and a layered settlement gauge are arranged in the soil sample layer, and the pore water pressure gauge, the soil pressure cell and the layered settlement gauge respectively detect and record the pore water pressure, the soil stress and the layered deformation of the soil layer in real time, so that accurate and effective simulation can be realized;
2. the transparent simulation box is made of high-strength toughened glass, can bear large force without losing stability, and has long service life;
3. all be equipped with high-speed appearance of making a video recording through four sides all around transparent simulation case, can real-time supervision record, can observe the dynamic process of fine particle seepage flow erosion effectively, improved the precision of observing.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a view showing the connection between the transparent simulation box and the diversion box according to the present invention;
FIG. 3 is a cross-sectional view of FIG. 2 of the present invention;
fig. 4 is a connection diagram of the water inlet main pipe and the water distribution pipe.
Description of reference numerals:
1. a transparent simulation box; 2. a flow guide box; 3. supporting legs; 4. a water collection tank; 5. a flow guide pipe; 6. a first interception net; 7. a sandstone layer; 8. a second interception net; 9. a soil sample layer; 10. a soil pressure cell; 11. a pore water pressure gauge; 12. a layered settlement meter; 13. a water distribution pipe; 14. water distribution holes; 15. a water inlet main pipe; 16. a base plate; 17. a support bar; 18. a high-speed camera; 19. a water supply tank; 20. a liquid pump; 21. a water delivery pipe; 22. a platform frame; 23. controlling the monitoring equipment by the computer; 24. a reinforcing rod.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
The utility model provides a soil internal erosion deformation response simulation device shown in figures 1-4, which comprises a transparent simulation box 1, wherein a flow guide box 2 is arranged at the bottom of the transparent simulation box 1, supporting legs 3 are fixed on the outer edge of the bottom of the flow guide box 2 at equal intervals, a water collecting box 4 is arranged at the bottom of the flow guide box 2, a flow guide pipe 5 is arranged between the flow guide box 2 and the water collecting box 4, the inner cavity of the flow guide box 2 is communicated with the inner cavity of the transparent simulation box 1, a first interception net 6 is fixed in an upper side port of the flow guide box 2, a sandstone layer 7 is arranged on the upper side of the first interception net 6, the sandstone layer 7 is embedded in the transparent simulation box 1, a second net interception net 8 is fixed on the upper side of the sandstone layer 7, a soil sample layer 9 is arranged on the upper side of the second interception net 8, and a soil pressure box 10 is sequentially arranged in the soil sample layer 9 from bottom to top, Pore water pressure gauge 11 and layered settlement appearance 12, the equidistant water distribution pipe 13 that is fixed with of top inner wall of transparent simulation case 1, water distribution hole 14 has been seted up to the surface equidistant of water distribution pipe 13, and is a plurality of the left end of water distribution pipe 13 is connected with inlet manifold 15 jointly, the bottom of header tank 4 is provided with bottom plate 16, the lower extreme and the bottom plate 16 of supporting legs 3 are connected, feed tank 19 is installed to the upside left part of bottom plate 16, install liquid pump 20 on the feed tank 19, liquid pump 20's input and feed tank 19 are connected, liquid pump 20's output is connected with raceway 21, in transparent simulation case 1 is stretched into to raceway 21's upper end, raceway 21's upper end and inlet manifold 15 are connected, platform frame 22 is installed to the upside right part of bottom plate 16, install computer control monitoring facilities 23 on the platform frame 22.
The soil pressure cell 10, the pore water pressure gauge 11, the layered settlement instrument 12 and the liquid pump 20 are electrically connected with the computer-controlled monitoring equipment 23, the soil pressure cell 10, the pore water pressure gauge 11 and the layered settlement instrument 12 send detected data to the computer-controlled monitoring equipment 23, the computer-controlled monitoring equipment 23 is used for processing, calculating and analyzing, and the accuracy is high.
The bottom of the transparent simulation box 1 is fixedly connected with the upper side of the flow guide box 2 in a sealing manner, so that the sealing performance between the bottom of the transparent simulation box 1 and the flow guide box 2 is ensured, and the phenomena of water leakage and the like are avoided.
The flow guide box 2 is conical, the upper end of the flow guide pipe 5 is connected with the bottom of the flow guide box 2, and the lower end of the flow guide pipe 5 is connected with the water collecting box 4, so that water flowing into the flow guide box 2 can be input into the water collecting box 4 through the flow guide pipe 5 and collected in the water collecting box 4.
It can be understood that the liquid pump 20 works to pump water in the water supply tank 19, the water is conveyed into the water inlet main pipe 15 through the water conveying pipe 21, then enters the water distribution pipe 13, is sprayed out from the water distribution holes 14, water is soaked into the soil sample layer 9, along with continuous spraying of water, redundant water in the soil sample layer 9 passes through the second interception net 8, the sand layer 7 and the first interception net 6, flows into the flow guide tank 2, and then enters the water collection tank 4 through the flow guide pipe 5, the soil pressure cell 10, the pore water pressure gauge 11 and the layered settlement gauge 12 are embedded in the soil sample layer 9, the soil pressure cell 10, the pore water pressure gauge 11 and the layered settlement gauge 12 detect and record soil stress, pore water pressure and soil layered deformation in the soil sample layer 9 in real time, relevant data are sent to the computer-controlled monitoring device 23, the computer-controlled monitoring device 23 is used for analysis and processing, relevant data information can be known, the transparent simulation box 1 is made of high-strength toughened glass, can bear large force without losing stability, is long in service life, and can observe the height and settlement change conditions of the soil sample layer 9 from four sides.
As shown in fig. 3, the first intercepting net 6 and the second intercepting net 8 are both made of stainless steel, so that the structure strength is high, the intercepting nets are not easy to damage, and the service life is long.
The bottom of first interception net 6 is equidistant to be fixed with stiffener 24, the both ends of stiffener 24 and the inner wall connection of flow guide box 2 support first interception net 6 through stiffener 24 for first interception net 6 can support grit layer 7 effectively.
Transparent simulation case 1 adopts high strength toughened glass to process and makes, and structural strength is big, difficult breakage, long service life, flow guide box 2 adopts the stainless steel processing to make, and structural strength is big, long service life.
It can be understood that, first interception net 6 and second interception net 8 adopt stainless steel processing to make, make first interception net 6 and second interception net 8's structural strength big, difficult corruption, and be fixed with stiffener 24 in first interception net 6 bottom equidistant, can support first interception net 6 effectively through stiffener 24, make first interception net 6 receive be difficult to damage after the extrusion of gravel layer 7, transparent simulation case 1 adopts high strength toughened glass processing to make, when can guaranteeing good transparency, make transparent simulation case 1 overall structure intensity big, it is difficult broken, whole long service life.
As shown in fig. 1, the flow guide box 2 is provided with support rods 17 at all directions, the lower end of each support rod 17 is connected with the bottom plate 16, the support rods 17 are provided with high-speed cameras 18, the high-speed cameras 18 are electrically connected with the computer control monitoring equipment 23, real-time monitoring and recording are performed through the high-speed cameras 18, and the high-speed cameras 18 can observe the dynamic process of fine particle seepage erosion.
It can be understood that all four sides all around at flow guide box 2 are fixed with bracing piece 17, install high-speed camera 18 on the bracing piece 17, carry out real-time supervision record in four sides all around transparent simulation case 1 respectively through four high-speed camera 18, can observe the dynamic process of fine particle seepage flow erosion effectively, have improved the precision of observing, have reduced artifical intensity of labour simultaneously, avoid the mistake that artifical observation appears.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and are not to be construed as limiting the scope of the utility model.