CN115524235A - Landslide model test device and method based on electromagnetic principle sliding surface simulation - Google Patents

Landslide model test device and method based on electromagnetic principle sliding surface simulation Download PDF

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CN115524235A
CN115524235A CN202211174005.7A CN202211174005A CN115524235A CN 115524235 A CN115524235 A CN 115524235A CN 202211174005 A CN202211174005 A CN 202211174005A CN 115524235 A CN115524235 A CN 115524235A
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sliding
flat plate
pressure sensor
sliding surface
adjusting
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程圣国
张博
吴剑
田东方
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China Three Gorges University CTGU
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Abstract

A landslide model test device and method based on electromagnetic principle slip surface simulation comprises a U-shaped slide way; a plurality of screw holes are formed in the U-shaped slide way, electromagnets are mounted at the screw holes through adjusting screws, and the adjusting screws are used for adjusting the heights of the electromagnets; the sliding flat plate comprises a panel, supporting legs are arranged at the bottom of the panel, horizontal guide rods are arranged on the supporting legs, and idler wheels are arranged on the horizontal guide rods; the structure of the reference flat plate comprises a sliding flat plate structure, in addition, a panel of the reference flat plate is provided with a bolt hole, and the side part of the panel is provided with a force transmission plate; the U-shaped slideway comprises a slideway bottom plate and a side wing, wherein the side wing is provided with a bolt hole, and the bolt hole is connected with the bolt hole through a bolt; the lower end part of the side wing is detachably provided with a supporting structure, the supporting structure is provided with a pressure sensor, and the position of the pressure sensor is matched with the position of the force transmission plate. The invention can realize the simulation and control of the slope angle from 8.530 to 67.220 and can realize the integral adjustment or the subarea adjustment of the sliding surface shear strength of the landslide model.

Description

Landslide model test device and method based on electromagnetic principle sliding surface simulation
Technical Field
The invention belongs to the field of landslide model test devices, and particularly relates to a landslide model test device and method for adjusting landslide sliding surface shear strength parameters by simulating positive pressure of a sliding surface based on electromagnetic force.
Background
The stability of the landslide body becomes an important problem concerned in the field of geological disaster prevention and control, how and under what conditions the landslide body is unstable needs to be studied in depth, and a model test is an important method for studying landslide stability. Many people have carried out intensive research on landslide model tests of landslide stability, and the two types of landslide model tests mainly comprise a frame type model test and a centrifuge model test, wherein the frame type model test is divided into a two-dimensional landslide model test and a three-dimensional landslide model test. The three-dimensional landslide model test and centrifuge model test have high manufacturing cost and test cost, and researchers mainly adopt a two-dimensional small model frame to research landslide stability at present.
The landslide stability is mainly controlled by the shear strength of internal-cause landslide soil and the induction of external-cause external load, human activities or earthquake interference, and the start glide of a landslide test model can adopt two ways: one is to reduce the shear strength of the landslide model slide strip, and the other is to increase the external load of the landslide model. The technical problems exist as follows:
1. at present, the shear strength of landslide rock and soil bodies is weakened and the self weight of the landslide body is increased in the process of applying rainfall commonly used for landslide, and the stability of the landslide is researched by increasing reservoir water level change frequently in the landslide with water.
2. Some increase the downhill angle of landslide body through the rear side of lifting model frame and simulate and exert gravity load to the landslide model to this improves the gliding force of landslide body, confirms the downhill angle of landslide body when the landslide model is unstability, but considers that the risk of turning on one's side of model frame itself and jack stroke are limited, and this kind of angle lifting generally controls at about 5 degrees, and it often has great limitation to study landslide stability through the angle lifting.
3. Some people use a thermosensitive material to simulate a soft interlayer, and control the shear strength of the soft interlayer by laying an electric heating belt (pipe), but the temperature also affects the physical and mechanical properties of the peripheral medium of the slip band soil, and the sectional control and adjustment cannot be realized considering the shear strength of the slip band soil.
Disclosure of Invention
In view of the technical problems in the background art, the landslide model test device and method based on the sliding surface simulation based on the electromagnetic principle provided by the invention adopt a plurality of sets of steel flat plates to slide on a U-shaped slideway provided with a small electromagnet to simulate the instability movement of the sliding surface, and adjust the electromagnetic force between the electromagnet and the steel flat plate by adjusting the working current of the electromagnet, namely adjust the positive pressure of the sliding friction, so as to adjust the friction force of the sliding surface, namely simulate and adjust the change of the friction coefficient (shear strength) of the sliding surface under the condition that the thickness of a model test sliding body is unchanged (under the condition that the positive pressure is unchanged); the integral adjustment or the partition adjustment of the sliding surface shear strength of the landslide model can be realized.
In order to solve the technical problems, the invention adopts the following technical scheme to realize:
a landslide model test device based on sliding surface simulation of an electromagnetic principle comprises a U-shaped slideway, a reference flat plate and a plurality of sliding flat plates; a plurality of screw holes are formed in the U-shaped slide way, electromagnets are mounted at the positions of the screw holes through adjusting screws, and the adjusting screws are used for adjusting the heights of the electromagnets;
the sliding flat plate comprises a panel, the bottom of the panel is provided with a supporting leg, the supporting leg is provided with a horizontal guide rod, and the horizontal guide rod is provided with a roller;
the structure of the reference flat plate comprises a structure of a sliding flat plate, in addition, a second bolt hole is arranged on a panel of the reference flat plate, and a force transmission plate is arranged on the side part of the panel;
the U-shaped slideway comprises a slideway bottom plate and a side wing, wherein a first bolt hole is formed in the side wing, the first bolt hole is matched with a second bolt hole, and the first bolt hole is connected with the second bolt hole through a bolt; the lower end part of the side wing is detachably provided with a supporting structure, the supporting structure is provided with a pressure sensor, and the position of the pressure sensor is matched with the position of the force transmission plate.
In a preferred scheme, the lower end parts of the side wings are provided with bolt holes, and the bolt holes are connected with the supporting and blocking structures through adjusting bolts.
In the preferred scheme, the width of the panel is the same as that of the U-shaped slide way, and the height of the supporting legs is greater than that of the side wings; the bottom of the supporting leg is arc-shaped.
In the preferred scheme, the U-shaped slide is made of stainless steel, and the reference flat plate and the sliding flat plate are made of common low-carbon steel.
In a preferred embodiment, the test method of the landslide model test apparatus based on the sliding surface simulation based on the electromagnetic principle includes the following steps:
step one, manufacturing a sliding bed: compacting clay to make a sliding bed and a sliding surface thereof;
step two, the shape of the U-shaped slide way is manufactured according to the sliding surface, and the U-shaped slide way is placed on the sliding surface to ensure that the U-shaped slide way and the sliding surface are in full contact;
step three, weighing all the reference flat plates and the sliding flat plates; fixing electromagnets at a plurality of screw holes at the bottom of the slideway base plate;
placing the reference flat plate on the U-shaped slide way, ensuring that the electromagnet is fully contacted with the reference flat plate by adjusting an adjusting screw of the electromagnet, and installing a bolt to fix the reference flat plate;
step five, sequentially installing other electromagnets and a sliding flat plate on the bottom plate of the slide way from bottom to top, and ensuring that the electromagnets are fully contacted with the sliding flat plate by adjusting screws of the electromagnets; after the plurality of sliding flat plates are installed, the installation of the whole sliding surface is completed;
step six, installing a supporting and blocking structure: fixing the mounting supporting structure at the end part of the U-shaped slideway through an adjusting bolt and a bolt hole, ensuring that the pressure sensor is in contact with the force transmission plate by adjusting the tightness degree of the adjusting bolt, generating a numerical value slightly larger than zero, and resetting the numerical value of the pressure sensor;
step seven, pulling out the bolt, recording the value of the sensor after the value of the pressure sensor is stable, and calculating to obtain the sliding friction coefficient of the reference flat plate, the sliding flat plate and the U-shaped slideway according to the weight of the reference flat plate and all the sliding flat plates and the slope angle of the slope where the reference flat plate and the sliding flat plate are located;
step eight, reinserting the plug pins and dismantling the supporting and blocking structure; manufacturing a sliding body on the sliding surface;
ninthly, connecting adjustable direct current power supplies in parallel according to a mode that n electromagnets are divided into a group, wherein each electromagnet is separately controlled by adopting an independent adjustable power supply, and a power line is led out from the upper end of the U-shaped slide way;
step ten, mounting a supporting and blocking structure again, ensuring that the pressure sensor is in contact with the force transmission plate by adjusting the tightness degree of the adjusting bolt, generating a numerical value slightly larger than zero, and resetting the data of the pressure sensor;
step eleven, all electromagnets are powered on, the voltage is adjusted to a rated voltage state, the bolt is pulled out, the value of the pressure sensor is recorded after the value of the pressure sensor is stabilized, the value of the pressure sensor with the sliding surface shear strength adjusted in a partition mode can be obtained by adjusting the voltage of the electromagnets of different steel flat plates, or the voltage of all the electromagnets is synchronously adjusted to be the same value, the value of the pressure sensor with the sliding surface under different shear strengths is obtained, the safety coefficient of the slope under different slope angles and the critical instability sliding surface shear strength can be obtained, the sensitivity of the change of the sliding surface shear strength in different partitions to the stability of the slope can be obtained, and a key block for controlling the stability of the slope is obtained.
This patent can reach following beneficial effect:
the invention adopts a plurality of sets of steel flat plates to slide on a stainless steel track provided with a small electromagnet to simulate the sliding surface sliding of a landslide, and uses the electromagnetic force between the electromagnet and the steel flat plates to adjust the positive pressure between the electromagnet and the steel flat plates, thereby realizing the change of the friction coefficient between the electromagnet and the steel flat plates and further realizing the simulation of the shear strength change of the sliding surface. The invention can realize the simulation and control of the slope angle from 8.530 to 67.220 and can realize the integral adjustment or the subarea adjustment of the sliding surface shear strength of the landslide model.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic elevation view of a landslide model test of the present invention;
FIG. 2 is a schematic perspective view of a U-shaped slideway according to the present invention;
FIG. 3 is a schematic view of the combined structure of the U-shaped slideway, the reference plate and the sliding plate;
FIG. 4 is a front view of a retaining structure of the present invention;
FIG. 5 is a perspective view of a reference plate according to the present invention;
FIG. 6 is a perspective view of the sliding plate and the rear plate according to the present invention.
In the figure: the device comprises a slide bed 1, a slide body 2, a U-shaped slide rail 3, a reference flat plate 4, a slide flat plate 5, a slide rail bottom plate 6, a side wing 7, a screw hole 8, a bolt hole 9, a first bolt hole 10, a supporting structure 11, an adjusting bolt 12, a pressure sensor 13, a bolt 14, a second bolt hole 15, a dowel plate 16, a horizontal guide rod 17, a supporting leg 18, a panel 19 and insulating paint 20.
Detailed Description
Example 1:
the preferable scheme is as shown in fig. 1 to 6, the landslide model test device based on electromagnetic principle sliding surface simulation comprises a U-shaped slide way 3, a reference flat plate 4 and a plurality of sliding flat plates 5, wherein the reference flat plate 4 and the sliding flat plates 5 are steel flat plates; a plurality of screw holes 8 are formed in the U-shaped slide 3, electromagnets are mounted at the positions of the screw holes 8 through adjusting screws, and the adjusting screws are used for adjusting the heights of the electromagnets;
the sliding flat plate 5 comprises a panel 19, supporting legs 18 are arranged at the bottom of the panel 19, horizontal guide rods 17 are arranged on the supporting legs 18, and idler wheels are arranged on the horizontal guide rods 17;
the structure of the reference flat plate 4 comprises the structure of the sliding flat plate 5, a panel 19 of the reference flat plate 4 is provided with a second bolt hole 15, and the side part of the panel 19 is provided with a force transmission plate 16;
the U-shaped slideway 3 comprises a slideway bottom plate 6 and a side wing 7, wherein the side wing 7 is provided with a first bolt hole 10, the first bolt hole 10 is matched with a second bolt hole 15, and the first bolt hole 10 is connected with the second bolt hole 15 through a bolt 14; the lower end part of the side wing 7 is detachably provided with a supporting structure 11, the supporting structure 11 is provided with a pressure sensor 13, and the position of the pressure sensor 13 is matched with the position of the force transmission plate 16.
The test model comprises a slide bed 1, a slide body 2, a U-shaped slide way 3, a reference flat plate 4, a plurality of slide flat plates 5, a cylindrical electromagnet, a plurality of sets of 24V adjustable transformer power supplies and the like. The slide bed 1 is formed by stacking clay or pouring concrete, the slide body 2 is formed by layering model materials, and the two-part test simulation technology is not included in the invention. The U-shaped slideway 3 can be made into a fold line shape or rolled into an arc shape according to the shape requirement of a sliding surface of a model test, and consists of a stainless steel smooth slideway bottom plate 6, side wings 7 and supporting and blocking structures 11, wherein the two sides of the side wings are vertical to the bottom plate, and the lower ends of the side wings are provided with 2 bolt holes 9 for fixing the supporting and blocking structures 11 and 2 first bolt holes 10 for fixing the reference flat plate 4. The lower end of the side wing 7 is provided with a bolt hole 9, and the bolt hole 9 is connected with a supporting structure 11 through an adjusting bolt 12.
The width of the panel 19 is the same as that of the U-shaped slide 3, the thickness is 8mm, and the height of the supporting leg 18 is larger than that of the side wing 7; the bottom of the support leg 18 is arc-shaped. The horizontal guide rod 17 is connected with four stainless steel rollers, the number of the supporting legs 18 is four, the front side and the rear side of the panel 19 are coated with insulating paint 20, and the height of each supporting leg 18 made of arc steel is slightly larger than that of the U-shaped slide 3. The U-shaped slideway 3 is made of stainless steel, and the reference flat plate 4 and the sliding flat plate 5 are made of common low-carbon steel.
The cylindrical electromagnet can be a small direct current sucker type electromagnet (such as XDA series electromagnets, the specific model can be selected according to the specific conditions of a model test), and is connected with the slideway bottom plate (6) through an adjustable bolt, and the cylindrical electromagnet is powered by a 24V adjustable transformer power supply.
The test method of the landslide model test device based on the sliding surface simulation of the electromagnetic principle comprises the following steps of:
step one, manufacturing a slide bed 1: compacting clay to manufacture a sliding bed 1 and a sliding surface thereof;
the specific operation is as follows: according to the scale and the sliding surface shape of the tested prototype landslide, the size of the model is determined, a detachable cuboid model support is manufactured by adopting a wood template, a sliding bed 1 and a sliding surface are manufactured in the model support by using clay compaction, a plastic film is laid between the model material and the model support, and the model support is detached after the sliding bed is manufactured.
Step two, the shape of the U-shaped slideway 3 is manufactured according to the sliding surface, and the U-shaped slideway 3 is placed on the sliding surface to ensure that the two slide surfaces are in full contact;
step three, weighing all the reference flat plates 4 and the sliding flat plates 5; electromagnets are fixed at a plurality of screw holes 8 at the bottom of the slideway bottom plate 6;
step four, placing the reference flat plate 4 on the U-shaped slide rail 3, adjusting an adjusting screw of the electromagnet to ensure that the electromagnet is fully contacted with the reference flat plate 4, and installing a bolt 14 to fix the reference flat plate 4;
fifthly, sequentially mounting other electromagnets and the sliding flat plate 5 on the slideway bottom plate 6 from bottom to top, and ensuring that the electromagnets are fully contacted with the sliding flat plate 5 by adjusting screws of the electromagnets; after the plurality of sliding plates 5 are installed, the installation of the whole sliding surface is completed;
step six, installing a supporting structure 11: fixing an installation supporting structure 11 at the end part of the U-shaped slideway 3 through an adjusting bolt 12 and a bolt hole 9, ensuring that a pressure sensor 13 is in contact with a force transmission plate 16 by adjusting the tightness degree of the adjusting bolt 12, generating a numerical value slightly larger than zero, and resetting the numerical value of the pressure sensor;
step seven, pulling out the bolt 14, recording the sliding force of the sensor value after the value of the pressure sensor is stable, and calculating to obtain the sliding friction coefficient of the reference flat plate 4, the sliding flat plate 5 and the U-shaped slideway 3 according to the weight of the reference flat plate 4 and all the sliding flat plates 5 and the slope angle of the slope where the reference flat plate 4 and the sliding flat plates 5 are located;
for example: the size of a single steel flat plate is 40cm in length, 20cm in width and 0.8cm in thickness, the rolling of the horizontal guide rod 17 with stainless steel wheels on the left side and the right side and the side wing 7 only play a role in positioning, the horizontal side pressure is very small and is rolling friction, the friction force is negligible, the height of a landslide model sliding body 2 covered above the position is 50cm, the model bulk weight is 2.0 multiplied by 103kg/m3, the inclination angle of the model is 300, the sliding friction coefficient of the arc-shaped steel support leg 18, the U-shaped stainless steel slideway bottom plate 6 and the surface of the electromagnet is 0.15, the self weight of the sliding flat plate is 60kg, 6 electromagnets XDA-80/80 (maximum suction force 300kg at 24V) are arranged below each flat plate, and the main parameters and results of the sliding surfaces are shown in the following table:
Figure BDA0003864586560000061
TABLE 1 relationship table of gradient and dynamic friction coefficient
Step eight, reinserting the bolt 14 and removing the retaining structure 11; a sliding body 2 is manufactured on the sliding surface;
the specific method comprises the following steps: and (3) removing the retaining structure 11, restoring the left side and the right side of the sliding bed 1 to mount the wooden template frame, manufacturing the molded sliding body by adopting a model similar material of the sliding body and adopting a layered compaction method, and paving a plastic film between the sliding body model material and the model frame. After the model sliding body is manufactured, the wooden template and the plastic film are removed, and the unlimited landslide test model is formed. The slider 2 is fixed to a sliding surface composed of a reference plate 4 and a sliding plate 5.
Ninthly, connecting adjustable direct current power supplies in parallel according to a mode that n electromagnets are divided into a group, wherein each electromagnet is separately controlled by adopting an independent adjustable power supply, and a power line is led out from the upper end of the U-shaped slide 3;
in this embodiment n =6, each six electromagnets are provided in one group, and one group of electromagnets is provided at the bottom of each reference flat plate 4 or sliding flat plate 5.
Step ten, installing the supporting structure 11 again, ensuring that the pressure sensor 13 is in contact with the force transmission plate 16 by adjusting the tightness degree of the adjusting bolt 12, generating a numerical value slightly larger than zero, and clearing the data of the pressure sensor;
step eleven, all electromagnets are powered on and adjusted to a rated voltage (24V voltage) state, the bolt 14 is pulled out, the value (downward sliding force) of the pressure sensor is recorded after the value of the pressure sensor is stable, the value (downward sliding force) of the pressure sensor adjusted in a partition mode according to the shear strength of the sliding surface can be obtained by adjusting the voltage of the electromagnets of different steel flat plates, or the value (downward sliding force) of the pressure sensor adjusted in a partition mode according to the shear strength of the sliding surface can be obtained by synchronously adjusting the voltage of all the electromagnets to be the same value, the value (downward sliding force) of the pressure sensor under different shear strengths of the sliding surface can be obtained, the safety coefficient and the size of the shear strength of the critical unstable sliding surface of the side slope at different slope angles can be obtained, the sensitivity of the change of the shear strength of the sliding surface in different partitions to the stability of the sliding slope can be obtained, and a key block for controlling the stability of the sliding slope can be obtained.
In summary, the invention can simulate the positive pressure of the sliding surface by the electromagnetic force based on the electromagnetic principle indoors, further simulate and adjust the change of the friction force of the sliding surface, realize the integral and regional adjustment control of the sliding surface shear strength of the landslide model test, measure the magnitude of the sliding force of the landslide model under different voltages (the electromagnetic force, the positive pressure and the friction coefficient), know the safety coefficient and the critical instability starting condition of the landslide at different slope angles, know the sensitivity of the change of the different regional shear strength of the sliding surface to the stability of the landslide, and obtain the key block for controlling the stability of the landslide.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and includes equivalents of technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of this invention.

Claims (5)

1. The utility model provides a landslide model test device based on simulation of electromagnetism principle slip surface which characterized in that: comprises a U-shaped slideway (3), a reference flat plate (4) and a plurality of sliding flat plates (5); a plurality of screw holes (8) are formed in the U-shaped slide (3), electromagnets are mounted at the screw holes (8) through adjusting screws, and the adjusting screws are used for adjusting the heights of the electromagnets;
the sliding flat plate (5) comprises a panel (19), supporting legs (18) are arranged at the bottom of the panel (19), horizontal guide rods (17) are arranged on the supporting legs (18), and rollers are arranged on the horizontal guide rods (17);
the structure of the reference flat plate (4) comprises the structure of a sliding flat plate (5), in addition, a second bolt hole (15) is arranged on a panel (19) of the reference flat plate (4), and a force transmission plate (16) is arranged on the side part of the panel (19);
the U-shaped slideway (3) comprises a slideway bottom plate (6) and a side wing (7), wherein a first bolt hole (10) is formed in the side wing (7), the first bolt hole (10) is matched with a second bolt hole (15), and the first bolt hole (10) is connected with the second bolt hole (15) through a bolt (14); a supporting structure (11) is detachably arranged at the lower end part of the side wing (7), a pressure sensor (13) is arranged on the supporting structure (11), and the position of the pressure sensor (13) is matched with the position of the force transmission plate (16).
2. The landslide model test device based on electromagnetic principle slip plane simulation of claim 1, wherein: the lower end part of the side wing (7) is provided with a bolt hole (9), and the bolt hole (9) is connected with a supporting structure (11) through an adjusting bolt (12).
3. The sliding surface simulation-based landslide model test apparatus according to claim 1, wherein: the width of the panel (19) is the same as that of the U-shaped slide way (3), and the height of the supporting leg (18) is greater than that of the side wing (7); the bottom of the supporting leg (18) is arc-shaped.
4. The landslide model test device based on electromagnetic principle slip plane simulation of claim 1, wherein: the U-shaped slide way (3) is made of stainless steel, and the reference flat plate (4) and the sliding flat plate (5) are made of common low-carbon steel.
5. The method for testing a landslide model test apparatus based on an electromagnetic principle sliding surface simulation according to claim 1, comprising the steps of:
step one, manufacturing a sliding bed (1): compacting clay to manufacture a sliding bed (1) and a sliding surface thereof;
step two, the shape of the U-shaped slideway (3) is manufactured according to the sliding surface, and the U-shaped slideway (3) is placed on the sliding surface to ensure that the two slide surfaces are in full contact;
weighing all the reference flat plates (4) and the sliding flat plates (5); electromagnets are fixed at a plurality of screw holes (8) at the bottom of the slideway bottom plate (6);
fourthly, the reference flat plate (4) is placed on the U-shaped slide way (3), the electromagnet is ensured to be fully contacted with the reference flat plate (4) by adjusting an adjusting screw of the electromagnet, and the reference flat plate (4) is fixed by an installation bolt (14);
fifthly, other electromagnets and the sliding flat plate (5) are sequentially arranged on the slideway bottom plate (6) from bottom to top, and the electromagnets are ensured to be fully contacted with the sliding flat plate (5) by adjusting screws of the electromagnets; after the plurality of sliding flat plates (5) are installed, the installation of the whole sliding surface is completed;
step six, installing a supporting and blocking structure (11): fixing an installation supporting structure (11) at the end part of the U-shaped slideway (3) through an adjusting bolt (12) and a bolt hole (9), ensuring that a pressure sensor (13) is in contact with a force transmission plate (16) by adjusting the tightness degree of the adjusting bolt (12), generating a numerical value slightly larger than zero, and resetting the numerical value of the pressure sensor;
seventhly, pulling out the bolt (14), recording the value of the pressure sensor after the value of the pressure sensor is stable, and calculating to obtain the sliding friction coefficients of the reference flat plate (4), the sliding flat plate (5) and the U-shaped slide way (3) according to the weights of the reference flat plate (4) and all the sliding flat plates (5) and the slope angles of the slopes where the reference flat plate (4) and the sliding flat plates (5) are located;
step eight, reinserting the bolt (14) and dismantling the retaining structure (11); manufacturing a slider (1) on the sliding surface;
ninthly, connecting adjustable direct current power supplies in parallel according to a mode that n electromagnets are divided into a group, wherein each electromagnet is separately controlled by adopting an independent adjustable power supply, and a power line is led out from the upper end of the U-shaped slide way (3);
step ten, mounting the supporting and blocking structure (11) again, ensuring that the pressure sensor (13) is in contact with the force transmission plate (16) by adjusting the tightness degree of the adjusting bolt (12), generating a numerical value slightly larger than zero, and resetting the data of the pressure sensor;
step eleven, all electromagnets are powered on, the power supply is adjusted to a rated voltage state, the bolt (14) is pulled out, the value of the pressure sensor is recorded after the value of the pressure sensor is stable, the value of the pressure sensor with the sliding surface shear strength adjusted in a subarea mode can be obtained by adjusting the voltage of different steel flat plates of the electromagnets, or the value of the pressure sensor with the sliding surface shear strength adjusted in a subarea mode can be obtained by synchronously adjusting the voltage of all the electromagnets to be the same value, the value of the pressure sensor with the sliding surface under different shear strengths can be obtained, the safety coefficient and the critical unstability sliding surface shear strength of a slope under different slope angles can be obtained, the sensitivity of the change of the sliding surface shear strength in different subareas to the stability of the slope can also be obtained, and a key block for controlling the stability of the slope is obtained.
CN202211174005.7A 2022-09-26 2022-09-26 Landslide model test device and method based on electromagnetic principle sliding surface simulation Pending CN115524235A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116399558A (en) * 2023-06-05 2023-07-07 成都理工大学 Multi-system combined landslide surge simulation device and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116399558A (en) * 2023-06-05 2023-07-07 成都理工大学 Multi-system combined landslide surge simulation device and method
CN116399558B (en) * 2023-06-05 2023-08-15 成都理工大学 Multi-system combined landslide surge simulation device and method

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