CN113092046A - Stability research system of high and steep slope under earthquake and rainfall action - Google Patents
Stability research system of high and steep slope under earthquake and rainfall action Download PDFInfo
- Publication number
- CN113092046A CN113092046A CN202110369531.8A CN202110369531A CN113092046A CN 113092046 A CN113092046 A CN 113092046A CN 202110369531 A CN202110369531 A CN 202110369531A CN 113092046 A CN113092046 A CN 113092046A
- Authority
- CN
- China
- Prior art keywords
- rainfall
- slope
- earthquake
- stability
- side slope
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/04—Monodirectional test stands
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/025—Measuring arrangements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention discloses a system for researching the stability of a high and steep side slope under the action of earthquake and rainfall, which comprises a vibration table loading device and an artificial rainfall device. Firstly, a reduced scale side slope model is manufactured on a site work point, dynamic loads such as low-seismic-level earthquake loads, white Gaussian noise, real earthquake waves and the like are loaded on a vibration table on the reduced scale model, and the response of different positions of the side slope to the dynamic loads is monitored through an accelerometer, a soil pressure cell, a strain gauge and a displacement meter in the slope. And then monitoring the response of the seepage fields of different positions of the side slope through a moisture content meter and a pore water pressure meter for the rainfall of the side slope. Then, dynamic loads of different vibration levels from low to high are applied to the slope, and the response of different positions of the slope to the dynamic loads after rainfall is monitored. Therefore, the stability of the slope under the action of rainfall-free low-vibration level, the stability of the slope under the action of rainfall and the stability of each vibration level slope under the action of rainfall can be analyzed.
Description
Technical Field
The invention relates to the technical field of seismic engineering and artificial rainfall simulation, and particularly relates to slope stability analysis under a slope earthquake and rainfall coupling working condition.
Background
Engineering natural disasters are often classified into active fault and earthquake disasters, meteorological disasters, surface disasters, environmental disasters, and the like. China is located at the intersection of a circular Pacific earthquake structural system and a continental earthquake structural system, and earthquake disasters are frequent and strong. In ten earthquake regions in China, the southeast coastal earthquake has the characteristics of high intensity and low frequency. Meanwhile, the southeast coastal region is seriously influenced by monsoon, and extreme rainfall is easy to occur in rainy season, so that ground surface disasters such as landslide hazard risks, debris flow hazard risks, mountain disaster chain remote risks and the like can occur in the southeast coastal region under the coupling action of extraterrestrial power of extreme rainfall and the intra-terrestrial power of major earthquakes.
The earthquake triggers the stress change in the slope body, and the strain accumulation causes the crack to appear, thereby inducing the instability. Rainfall triggers the change of pore water pressure in the slope, the surface soil weight is increased, and rainwater continuously infiltrates to cause the reduction of the strength of the surface soil body of the slope, thereby inducing instability. The slope stability change under rainfall and earthquake conditions is decoupled and analyzed, and then the slope stability change under the action of internal and external power of earthquake rainfall is coupled, so that the temporal and spatial characteristics of slope instability under extreme conditions can be deeply analyzed, and the remote risk assessment research of a ground disaster chain can be facilitated. Therefore, a system for analyzing the slope stability under the conditions of earthquake and rainfall needs to be developed.
Earthquake simulation and indoor artificial rainfall technology are the key points for slope stability research. The earthquake simulation test generally comprises a pseudo-static test, a pseudo-dynamic test and a vibration table test. The three tests can study the earthquake-resistant performance of rock and soil, but a pseudo-static force loads triangular waves and slow loads, a pseudo-dynamic test loads response waves of a structure, and a vibrating table tests and loads earthquake waves. Because the slope research model is too large in size, the space dimension can only adopt a vibration table capable of using a small-scale model to load seismic waves. Natural rainfall is difficult to control, so that indoor artificial rainfall simulation can be only adopted. The indoor artificial rainfall has the advantages of stable rainfall, controllable flow and the like. However, indoor artificial rainfall equipment is high in price and narrow in application range at present, and cannot be matched with a vibration table model. Therefore, the invention provides improvement and supplement aiming at the defects, and combines the action of different dynamic actions of earthquake and rainfall on the slope into a model test for research.
Disclosure of Invention
The invention researches and develops a test device for researching the stability of a high and steep slope under the rainfall action and the earthquake action, and different rainfalls (such as rainfall intensity, rainfall type and the like) are simulated by an indoor artificial rainfall device; different earthquakes (such as the type of earthquake waves, the magnitude of earthquake magnitude and the like) are simulated through the unidirectional electro-hydraulic servo drive type vibration table device. The slope model obtained by scaling on site is loaded, the response of different positions of the slope to the internal dynamic force (seismic waves) is monitored through an accelerometer, a soil pressure cell, a strain gauge and a displacement meter in the slope, and the response of different positions of the slope to the external dynamic force (rainfall) is monitored through a moisture content meter and a pore water pressure meter. According to the invention, different power actions are arranged in a model box, namely, the internal and external power actions (only rainfall, only earthquake and rainfall and earthquake coupling action) can be respectively researched through the device, the device is fine, the conditions are controllable, the thinking is strict, the result is reliable, the repeated operation can be carried out, the practicability is strong, and an efficient and comprehensive method is provided for monitoring the stability of the high and steep slope.
In order to meet the requirements, the technical scheme selected by the invention is as follows:
the system for researching the stability of the slope body comprises a reduced scale model making device, a vibration table loading device, a rainfall device, a camera device and a slope dynamic response acquisition device.
The scale model manufacturing device is a rigid frame which is fixed on the vibration table and used for placing the scale model; the side slope size of the test model can be calculated by a field actual side slope reduced scale through a similar theory, wherein different soil layer particle parameter properties, different soil layer thicknesses and gradients, different retaining structure forms, different retaining structure positions and different retaining structure sizes can be used as test variables to carry out tests. The sensitivity analysis of the stability of the high and steep slope is further carried out on different variables, and the practicability is high;
the scale model manufacturing device is composed of a cuboid steel frame, and the side face and the back of the steel frame are filled with high-strength acrylic plates;
specifically, in order to prevent rainwater from seeping out from gaps between the frame and the filling plate in the rainfall process, a butyl self-adhesive waterproof tape is used at the joint of the steel frame and the high-strength acrylic plate, and transparent cellophane is pasted to seal the joint and prevent water seepage;
the vibration table loading device is driven by adopting a one-way electro-hydraulic servo drive mode and is used for inputting dynamic loads such as artificial waves, natural waves and the like into the vibration table;
the vibration table loading device comprises a hydraulic system, a vibration table, a cooling system, a control system, an oil tank and a track;
specifically, the vibration table loading device can be used for researching the dynamic characteristics of various soil bodies and structures, can be used for simulating various artificial waves and natural waves, converting numerical signals into electric signals, provides proper power for a hydraulic jack behind the vibration table through a hydraulic system, and feeds back the electric signals measured by the table top to the host in time to complete the vibration table test under the action of specified waveforms;
the rainfall device adopts an automatic spraying device with adjustable flow and is used for simulating different rainfall working conditions of the slope surface;
the rainfall device consists of a PE water pipe, a flowmeter, a water pump, a wooden frame beam, a water tank, a speed regulator, an atomizing nozzle, a voltage stabilizer and a high-strength cable for adjusting the height of the nozzle. Specifically, water in a water tank is pumped by a water pump, is conveyed to a flowmeter through a PE water pipe, and is sprayed to a slope surface through an atomizing nozzle to complete rainfall;
specifically, the rainfall can be changed by adjusting the speed regulator and the voltage stabilizer, and the rainfall can stably flow in the PE water pipe to simulate light rain, medium rain, heavy rain and extra-large heavy rain; the specific flow value can be obtained in real time through the flowmeter; the type of rainfall can be changed by adjusting the atomizing spray head, such as average type, front peak type, middle peak type and rear peak type; the height of the atomizing nozzle can be changed by adjusting the high-strength cable, and the influence of the height of rainfall on the slope seepage is researched; specifically, the wooden rainfall frame beam is used for fixing the spray head and the PE water pipe connected with the spray head, so that the size of the wooden rainfall frame beam needs to be specially designed according to a formulated rainfall model;
the model of the speed regulator is a direct current motor 20A pulse width speed regulator produced by Yujia electronics; model number of the voltage stabilizer is JC 2405; the flow meter is an ultrasonic flow meter produced by a Dalianbo sound meter, the model is BS-NU-1.15, and the measurement range is 0.035-1.6L/min.
The camera device adopts a remote control type video recording device and is used for recording the slope surface crack forming and penetrating process, the sliding body forming process and the displacement of the supporting structure;
the camera device consists of a camera mobile phone and a mobile phone fixing frame, wherein the model of the camera mobile phone is P9, and a rear lens with two 1200 ten thousand pixels is adopted;
the dynamic response acquisition device for the side slope is characterized in that different monitoring instruments are embedded in the high and steep side slope, data are acquired when earthquake waves and rainfall are loaded, and the data are analyzed to obtain the response of different positions in the high and steep side slope to internal and external dynamic loads;
the dynamic response acquisition device for the side slope consists of a water content meter, a soil pressure cell, an accelerometer, a strain gauge, a pore water pressure meter, a displacement meter, an acquisition instrument and a notebook computer, wherein the water content meter, the soil pressure cell, the accelerometer, the strain gauge, the pore water pressure meter and the displacement meter are buried in a slope body, the acquisition instrument is used for acquiring data of the instrument, and the notebook computer is used for recording and displaying the acquired data;
specifically, in the three processes of independent loading of seismic waves, independent rainfall and coupling action of earthquake and rainfall, a certain degree of response can occur in the interior of a high and steep slope body, dynamic response of the slope body under working conditions of rainfall, earthquake and the like is monitored through instruments such as a moisture content meter, a soil pressure cell, an accelerometer, a strain gauge, a pore water pressure meter and the like embedded in the slope body, then the dynamic response is recorded to a notebook computer through a collecting instrument, data analysis is carried out, a series of change rules can be obtained, such as a soil body deformation rule, a PGA (programmable Gate array) amplification effect cloud picture, a moisture content change rule, a soil pressure increase rule and the like, and a basis is provided for slope stability analysis;
the dynamic response acquisition device for the side slope adopts Jiangsu Tester electronic equipment manufacturing company, Sudonghua analytical instruments company, acquisition instruments produced by the West's micro-positron, and an association notebook computer. TST5912 produced by Tester monitors changes of an accelerometer and an earth pressure cell, DH5921 produced by Tohua monitors strain in a slope and stress strain of a retaining structure, and a micro-positron apparatus of Sigan monitors changes of a water content meter, a pore water pressure meter and a slope displacement meter.
Drawings
FIG. 1 is a schematic diagram of a model test apparatus instrument arrangement according to the present invention;
FIG. 2 is a schematic view of a vibration table loading apparatus of the present invention;
FIG. 3 is a schematic view of the rainfall apparatus arrangement of the present invention;
shown in the figure: 1-steel frame, 2-high strength acrylic plate, 3-hydraulic system, 4-shaking table, 5-cooling system, 6-control system, 7-oil tank, 8-track, 9-PE water pipe, 10-flowmeter, 11-water pump, 12-wooden frame roof beam, 13-water tank, 14-speed regulator, 15-atomizer, 16-stabiliser, 17-high strength cable for adjusting the shower nozzle height, 18-camera phone, 19-cell phone mount, 20-moisture content meter, 21-soil pressure box, 22-accelerometer, 23-foil gage, 24-pore water pressure gauge, 25-displacement gauge, 26-bedrock, 27-fill.
Detailed Description
The following detailed system description of the embodiments of the present invention will be provided in conjunction with the accompanying drawings and specific embodiments to facilitate a better understanding of the present invention by those skilled in the art. However, the embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The invention relates to a system for researching the stability of a high and steep side slope under the action of earthquake and rainfall, which comprises a reduced scale model making device, a vibration table loading device, a rainfall device, a camera device and a side slope dynamic response acquisition device; wherein: the scale model making device is fixed on the vibrating table and used for placing a rigid frame of the scale model; the vibration table loading device is driven by adopting a one-way electro-hydraulic servo drive mode and is used for inputting dynamic loads such as artificial waves, natural waves and the like into the vibration table; the rainfall device adopts an automatic spraying device with adjustable flow and is used for simulating different rainfall working conditions of the slope surface; the camera device adopts a remote control type video recording device and is used for recording the formation and the penetration process of the side slope surface crack, the formation process of the sliding body and the displacement of the supporting structure; the slope dynamic response acquisition device comprises an acquisition instrument and computer equipment connected with the acquisition instrument, dynamic response of a slope body under working conditions of rainfall, earthquake and the like is sensed through instruments such as a moisture content meter (20), a soil pressure box (21), an accelerometer (22), a strain gauge (23), a pore water pressure meter (24) and the like embedded in the slope body, and then the dynamic response is recorded to a notebook computer through the acquisition instrument.
The invention relates to a research system for the stability of a high and steep slope under earthquake and rainfall conditions, which comprises a vibration table loading device and an artificial rainfall device, and can be used for manufacturing a reduced scale slope model of an actual engineering site working point and researching and analyzing the stability under three working conditions of only earthquake action, only rainfall action and earthquake and rainfall coupling action, so as to provide corresponding suggestions for the construction of actual engineering.
As shown in fig. 1, the model box overall diagram of the research system includes a scale model making device, a vibration table loading device, a rainfall device, a camera device and a slope dynamic response collecting device;
the scale model making device is fixed on the vibrating table device and is used for placing a cast steel frame for fixing a scale slope model and filling the slope scale model of the actual engineering, namely filling scales such as the slope size, the soil layer distribution, the size of a retaining structure and the like of a site work point in the actual engineering according to a similar theory;
the vibration table loading device adopts a unidirectional electro-hydraulic servo drive type vibration table, and researches the dynamic characteristics of soil bodies and structures in the reduced scale model by simulating various artificial waves and natural waves. Firstly, the software converts numerical signals of various waves into electric signals, then a hydraulic system provides proper power for a hydraulic jack behind a vibration table, and finally the electric signals measured by the table top are fed back to the host;
the rainfall device mainly adopts an automatic spraying device with adjustable flow, is mutually independent of the vibrating table loading device, and can simulate not only the working condition only affected by earthquake, but also the working condition only affected by rainfall and the working condition that the rainfall is coupled with the earthquake. In addition, under the two working conditions that are only coupled by the rainfall effect or the rainfall earthquake effect, different rainfall types (front peak type, middle peak type, rear peak type and uniform type), different rainfall amounts (small rain, middle rain, large rain, heavy rain, large heavy rain), different rainfall heights and the like can be simulated by adjusting the rainfall device;
the camera device adopts a remote control type video recording device and is mainly used for recording the process that the cracks on the slope surface develop from generation to penetration and then to the formation of a sliding body under the action of earthquakes and rainfalls under corresponding working conditions and the displacement of the slope mark point and the supporting and blocking structure;
the dynamic response acquisition device for the side slope mainly adopts test instruments such as an accelerometer, a pore pressure meter, a water content meter, a strain gauge, a soil pressure box and the like produced by Jiangsu Tester electronic equipment manufacturing company Limited, Sudonghua analytical instruments Limited and a Xian micro positron company, and a data acquisition instrument and an association notebook computer.
Specifically, as shown in fig. 1, the reduced scale model making device comprises a cast steel mold box body, wherein a high-strength steel plate is arranged at the bottom of the cast steel mold box body, steel frames 1 are arranged on the side surface, the back surface and the top surface of the cast steel mold box body, transparent visible high-strength acrylic plates 2 are arranged on the back surface of the cast steel mold box body and the inner sides of the steel frames on the side surface for facilitating observation in the test process, and butyl self-adhesive waterproof tapes are adopted on the side surface, the back surface and the bottom steel plate of the cast steel mold box body for preventing rainwater generated by a rainfall device from seeping out of the box body;
as shown in figure 2, the vibration table loading device comprises a unidirectional electro-hydraulic servo drive type earthquake simulation vibration table, which is composed of a hydraulic system 3, a vibration table 4, a vibration table control system 6 and a cooling system 5, wherein the vibration table control system 6 is composed of a hydraulic control part, a waveform control part, an accelerometer 22 and a displacement meter 25, the hydraulic system 3 is composed of a hydraulic jack and an oil tank 7, the cooling system 5 is composed of a cooling machine, the scale model making device is fixed on the vibration table 4 with the table-board size of 3.5m multiplied by 1.5m multiplied by 2.1m, numerical signals of various artificial waves and natural waves with the frequency range of 0.4 HZ-15 HZ and the acceleration range of 0 g-1.2 g can be converted into electric signals through the vibration table control system 6, the oil pressure of the oil tank 7 in the hydraulic system 3 is adjusted to corresponding pressure, and appropriate power is provided behind the vibration table by the hydraulic jack in the hydraulic system 3 so that the vibration table-board 4 and the scale model making device can make the scale model according to fingers The method comprises the steps of fixing waveform and performing unidirectional excitation, feeding an electric signal measured by a table top back to a vibration table control system 6 in time, simultaneously enabling oil in an oil tank 7 in a hydraulic system to be kept in a proper temperature range by a cooling system 5, and loading 0.1g to 0.8g of seismic waves from 0.1g according to the acceleration increment of 0.05g, wherein Gaussian white noise, 5HZ sine wave and Gaussian white noise are mainly adopted in the research of the dynamic response characteristic of a scale slope model under the working condition of earthquake and rainfall;
the rainfall device is formed by sequentially connecting a water tank 13, a water pump 11, a voltage stabilizer 16, a speed regulator 14, a flowmeter 10, a PE water pipe 9 and an atomizing nozzle 15 on a water outlet channel of the water tank, wherein the voltage stabilizer firstly adjusts a standard voltage of 220V to a stable working voltage of 24V required by the water pump 11, then adjusts the speed regulator 14 to enable the flow displayed by the flowmeter 10 to reach a flow required by a test, the water pump stably pumps water into the PE water pipe 9 according to the flow displayed by the flowmeter and then uniformly sprays the water on a slope surface through the atomizing nozzle 15, the PE water pipe 11 and the atomizing nozzle 12 are tightly fixed on a wooden frame beam 10 through binding wires, a high-strength rope 13 is connected on the wooden frame beam 10, and different rainfall types (a front peak type, a middle peak type, a rear peak type and a uniform type) and different rainfall sizes (a small rain) can be simulated through adjusting the voltage stabilizer 16 and the speed regulator 14, Medium rain, heavy rain, extra heavy rain), different rainfall heights can be simulated by adjusting the length of the high-strength rope 17;
the camera system comprises a camera mobile phone 18 and a mobile phone fixing support 19, wherein the mobile phone is fixed in a model box through a mobile phone fixing support so as to record the process from the formation of a slope crack to the penetration to the formation of a sliding body under different working conditions due to earthquake and rainfall and analyze the displacement of a slope mark point and a retaining structure;
the side slope dynamic response acquisition device comprises an accelerometer 22, a strain gauge 23, a soil pressure cell 21, a pore water pressure gauge 24, a water content gauge 20, a displacement gauge 25 and other test instruments buried in a reduced scale side slope model in a reduced scale model manufacturing device, a data acquisition instrument and a notebook computer, wherein TST5912 produced by Tester is used for monitoring and acquiring data changes of the accelerometer 22 and the soil pressure cell 21, DH5921 produced by Tohua is used for monitoring and acquiring data changes of the strain gauge 23 of the retaining structure in a slope, instruments produced by the West's micro positron are used for monitoring and acquiring data changes of the water content gauge 20, the pore water pressure gauge 24 and the displacement gauge 25, and all the data acquisition instruments are connected to the notebook computer for recording data in real time. The number and arrangement of various instruments need to be arranged according to research targets;
as shown in figure 2, the PE water pipe (9) and the atomizing nozzles 15 in the rainfall device are tightly fixed on a wooden frame beam 12 through binding wires, every two nozzles are connected in series at intervals of 38cm to form a group of five groups, and then the groups are connected in parallel at intervals of 42cm, and 24 atomizing nozzles are arranged in total.
As shown in fig. 3, the strain gauge 23 and the displacement gauge 25 in the dynamic slope response acquisition device can be arranged at a position about 0.810m away from the high-strength acrylic plate 2 at the inner side of the steel frame 1 at the back of the steel casting mold box in the reduced scale model making device, and the soil pressure cell 21, the water content gauge 20 and the pore water pressure gauge 24 can be arranged at a position about 0.755m away from the high-strength acrylic plate 2 at the inner side of the steel frame 1 at the back of the steel casting mold box in the model system;
the specific installation steps of the stability research system of the high and steep slope under the action of earthquake and rainfall are as follows:
obtaining geological survey data of actual engineering site work points, determining a model reduced scale proportion in a reduced scale model manufacturing device according to a similar theory, selecting a representative soil sample on site to perform a soil physical property test, and transporting the soil sample with a certain volume back to a laboratory;
transparent visual high-strength acrylic plates 5 are arranged on the back surface of a cast steel model box body of the reduced scale model making device and the inner side of a side steel frame, a waterproof adhesive tape is used for sealing gaps to prevent water leakage, and the height and the position of each layer of soil are marked on the high-strength acrylic plates at the periphery by using a black marking pen according to geological data of site work points and the determined model reduced scale proportion, so that the subsequent reduced scale model can be conveniently filled and made;
reconfiguring the properties of the soil sample transported back to a laboratory to the site soil sampling according to the site physical property test result, filling the soil sample into a reduced scale model manufacturing device in layers to finish the manufacturing of a reduced scale model, burying the soil sample into the reduced scale model according to the specific positions and the number of various instruments determined in the slope dynamic response acquisition device, connecting the instruments with a data acquisition instrument, and connecting the data acquisition instrument with a notebook computer to finish the arrangement of the slope dynamic response acquisition device;
fixing a PE water pipe 9 and an atomizing nozzle 15 in a rainfall device on a wooden frame beam 12 and sequentially connecting a flowmeter 14, a voltage stabilizer 9, a speed regulator 8, a water pump 7 and a water tank (6), realizing rainfall at different heights from a slope surface by adjusting a high-strength rope 17 connected on the wooden frame beam 12, and realizing different rainfall types and rainfall amounts by adjusting the speed regulator 14 and the voltage stabilizer 16 to finish the arrangement of the rainfall device;
fixing a camera 18 on a camera fixing frame 19 in the model box to complete the arrangement of the camera device;
after all the equipment is installed, starting a vibration table loading device, adding low-seismic-level seismic waves, and monitoring the response of a slope body to the action of only seismic dynamic force;
closing the vibrating table loading device, starting the rainfall device, setting the flow and the rainfall duration in unit time according to the target rainfall and the target rainfall type, and monitoring the dynamic response of the slope body to rainfall only during the rainfall;
after the rainfall is finished, the rainfall device is closed, and the vibration table loading device is started;
applying seismic waves of various seismic levels to the slope body, and monitoring the dynamic response of the slope body under the combined action of rainfall and earthquake;
the scope of the invention is not limited to the specific embodiments described above.
The present invention has been systematically described using specific engineering cases to explain the principles and embodiments of the present invention, and the foregoing detailed description is only intended to describe the methods and embodiments of the present invention. According to the specific implementation method and the test range of the invention, various combined working condition researches can be developed. Other embodiments can be derived by those skilled in the art from the technical solutions of the present invention, and are also within the technical innovation scope of the present invention.
Claims (3)
1. The system for researching the stability of the high and steep side slope under the action of earthquake and rainfall is characterized by comprising a reduced scale model making device, a vibration table loading device, a rainfall device, a camera device and a side slope dynamic response acquisition device; wherein:
the scale model making device is fixed on the vibrating table and used for placing a rigid frame of the scale model;
the vibration table loading device is driven by adopting a one-way electro-hydraulic servo drive mode and is used for inputting dynamic loads such as artificial waves, natural waves and the like into the vibration table;
the rainfall device adopts an automatic spraying device with adjustable flow and is used for simulating different rainfall working conditions of the slope surface;
the camera device adopts a remote control type video recording device and is used for recording the formation and the penetration process of the side slope surface crack, the formation process of the sliding body and the displacement of the supporting structure;
the slope dynamic response acquisition device comprises an acquisition instrument and computer equipment connected with the acquisition instrument, dynamic response of a slope body under working conditions of rainfall, earthquake and the like is sensed through instruments such as a moisture content meter (20), a soil pressure box (21), an accelerometer (22), a strain gauge (23), a pore water pressure meter (24) and the like embedded in the slope body, and then the dynamic response is recorded to a notebook computer through the acquisition instrument.
2. The system for studying the stability of a high and steep side slope under the action of earthquake and rainfall according to claim 1, wherein: the vibrating table loading system and the rainfall system are not interfered with each other, so that the stability change of the side slope under the action of earthquake or rainfall can be simulated independently, and the stability change of the side slope under the combined action of earthquake and rainfall can also be simulated. The rainfall infiltration depth can be deduced through the change rule of the water content meter in the slope, and then the water migration analysis is carried out.
3. The slope stability study system of claim 1, wherein: the model making device is filled with a cuboid steel frame (1) and high-strength acrylic plates (2) on the side and back of the steel frame (1). The vibration table loading device comprises a hydraulic system (3), a vibration table (4), a cooling system (5), a control system (6), an oil tank (7) and a track (8). The rainfall device consists of a PE water pipe (9), a flowmeter (10), a water pump (11), a wooden frame beam (12), a water tank (13), a speed regulator (14), an atomizing spray head (15), a pressure stabilizer (16) and a high-strength cable (17) for adjusting the height of the spray head. The camera system consists of a camera mobile phone (18) and a mobile phone fixing frame (19). The dynamic response acquisition device for the side slope is characterized in that the changes of an accelerometer and soil pressure are monitored by TST5912 produced by Tester, the changes of strain in the side slope and stress strain of a retaining structure are monitored by DH5921 produced by Donghua, and the changes of a water content meter (20), a pore water pressure meter (24) and a slope displacement meter (25) are monitored by a West's micro positron instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110369531.8A CN113092046A (en) | 2021-04-06 | 2021-04-06 | Stability research system of high and steep slope under earthquake and rainfall action |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110369531.8A CN113092046A (en) | 2021-04-06 | 2021-04-06 | Stability research system of high and steep slope under earthquake and rainfall action |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113092046A true CN113092046A (en) | 2021-07-09 |
Family
ID=76674727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110369531.8A Pending CN113092046A (en) | 2021-04-06 | 2021-04-06 | Stability research system of high and steep slope under earthquake and rainfall action |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113092046A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115656478A (en) * | 2022-11-14 | 2023-01-31 | 中国科学院、水利部成都山地灾害与环境研究所 | Seepage-proofing shearing test device for simulating ice particle circulating shearing and using method |
| CN118348227A (en) * | 2024-06-17 | 2024-07-16 | 成都理工大学 | Simulation system and method for simulating natural rainfall and earthquake coupling |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107144682A (en) * | 2017-05-24 | 2017-09-08 | 黑龙江科技大学 | Simulate the experimental rig and method of earthquake and the influence of rainfall Upon Slope Stability |
| CN111289727A (en) * | 2020-04-02 | 2020-06-16 | 中国科学院、水利部成都山地灾害与环境研究所 | Vegetation covering slope body instability critical condition research model test system under rainfall effect |
| CN111796072A (en) * | 2020-06-24 | 2020-10-20 | 中铁第一勘察设计院集团有限公司 | High and steep slope vibration table test system under rainfall condition and building test method thereof |
| CN111855121A (en) * | 2020-08-17 | 2020-10-30 | 昆明理工大学 | Slope instability experimental device and method with rainfall and earthquake as inducement factors |
| CN112213469A (en) * | 2020-11-04 | 2021-01-12 | 华南农业大学 | Experimental device and method for simulating coupling effect of seismic waves and rainfall to induce landslide |
| WO2021003689A1 (en) * | 2019-07-10 | 2021-01-14 | 中国科学院地质与地球物理研究所 | Side slope in-situ loading device |
-
2021
- 2021-04-06 CN CN202110369531.8A patent/CN113092046A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107144682A (en) * | 2017-05-24 | 2017-09-08 | 黑龙江科技大学 | Simulate the experimental rig and method of earthquake and the influence of rainfall Upon Slope Stability |
| WO2021003689A1 (en) * | 2019-07-10 | 2021-01-14 | 中国科学院地质与地球物理研究所 | Side slope in-situ loading device |
| CN111289727A (en) * | 2020-04-02 | 2020-06-16 | 中国科学院、水利部成都山地灾害与环境研究所 | Vegetation covering slope body instability critical condition research model test system under rainfall effect |
| CN111796072A (en) * | 2020-06-24 | 2020-10-20 | 中铁第一勘察设计院集团有限公司 | High and steep slope vibration table test system under rainfall condition and building test method thereof |
| CN111855121A (en) * | 2020-08-17 | 2020-10-30 | 昆明理工大学 | Slope instability experimental device and method with rainfall and earthquake as inducement factors |
| CN112213469A (en) * | 2020-11-04 | 2021-01-12 | 华南农业大学 | Experimental device and method for simulating coupling effect of seismic waves and rainfall to induce landslide |
Non-Patent Citations (2)
| Title |
|---|
| JINCHANG CHEN: "Experimental study on the dynamic characteristics of low-angle loess slope under the influence of long- and short-term effects of rainfall before earthquake", 《ENGINEERING GEOLOGY》 * |
| 邹祖银: "一种分析岩土模型地震受力变形的方法", 《世界地震工程》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115656478A (en) * | 2022-11-14 | 2023-01-31 | 中国科学院、水利部成都山地灾害与环境研究所 | Seepage-proofing shearing test device for simulating ice particle circulating shearing and using method |
| CN118348227A (en) * | 2024-06-17 | 2024-07-16 | 成都理工大学 | Simulation system and method for simulating natural rainfall and earthquake coupling |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Amitrano et al. | Microseismic activity analysis for the study of the rupture mechanisms in unstable rock masses | |
| CN111877418B (en) | Real-time monitoring and early warning system for dynamic construction of deep foundation pit and using method | |
| CN103940394B (en) | The monitoring system and method for tunneltron canopy construction method excavation simulation device | |
| CN107179396A (en) | Multifunctional built-up formula Geotechnical Engineering physics similar test system | |
| CN109917108A (en) | A kind of three-dimensional similar material model experiment device and method for simulating seam mining | |
| CN113092046A (en) | Stability research system of high and steep slope under earthquake and rainfall action | |
| CN108717082A (en) | A kind of compaction of earth rock material quality continuous assessment method based on integrated sonic detection technology | |
| CN106638725A (en) | Pipe pile soil squeezing effect testing apparatus and method | |
| CN111811856B (en) | Coal pillar dam body accumulated damage evolution comprehensive experiment device and experiment method thereof | |
| CN111679060A (en) | Angle-variable slope model test device and method under coupling action of earthquake and rainfall | |
| CN103510503A (en) | Method for monitoring rammed point soil stabilization state vibration in real time | |
| CN108303512B (en) | Method for in-situ testing soil-water characteristic curve | |
| CN211478117U (en) | Portable saline soil in-situ frost heaving and subsidence detection device | |
| CN106951504A (en) | Based on the computational methods that the dynamic analysis of slope of eigentone is stable | |
| CN207379694U (en) | Wave load loading device based on model slot | |
| CN114705826A (en) | Indoor artificial rainfall and monitoring slope stability device | |
| CN206274324U (en) | Double change slopes etching tank and interflow determining instrument | |
| Aguilar et al. | Structural damage assessment of Huaca de la Luna, Perú: preliminary results from ongoing multidisciplinary study | |
| Toll et al. | Climate change and the role of unsaturated soil mechanics | |
| CN217358824U (en) | Large-section rectangular jacking pipe frictional resistance testing system | |
| Sasahara et al. | Shear and compression strain development in sandy model slope under repeated rainfall | |
| Segalini et al. | Role of geotechnical monitoring: state of the art and new perspectives | |
| CN207571131U (en) | A kind of simulator that Gu Gou is examined to protect plateau engineering measure effect | |
| CN106094042A (en) | A kind of coal field Mining subsidence and the analog detection assay device of reparation | |
| Bouchayer et al. | Multi-scale variations of subglacial hydro-mechanical conditions at Kongsvegen glacier, Svalbard |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210709 |
|
| WD01 | Invention patent application deemed withdrawn after publication |