CN203643442U - Multifunctional rainfall landslide indoor testing device - Google Patents
Multifunctional rainfall landslide indoor testing device Download PDFInfo
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- CN203643442U CN203643442U CN201320869786.1U CN201320869786U CN203643442U CN 203643442 U CN203643442 U CN 203643442U CN 201320869786 U CN201320869786 U CN 201320869786U CN 203643442 U CN203643442 U CN 203643442U
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Abstract
The utility model discloses a multifunctional rainfall landslide indoor testing device which comprises a tempered glass model casing and a metal frame, wherein the metal frame is arranged on the wall of the tampered glass model casing and is used for improving the strength of the tempered glass model casing; a plurality rows of moisture sensor mounting holes and pore water pressure sensor mounting holes are symmetrically formed in two sides of the tempered glass model casing; moisture sensors and pore water pressure sensors are arranged in the moisture sensor mounting holes and the pore water pressure sensor mounting holes, respectively; the bottom of the tempered glass model casing is provided with a metal bottom plate; a drain hole is formed in the bottom of a front door of the tempered glass model casing; a filtering net is arranged at the drain hole so as to prevent a soil sample from being washed away so as not to block the drain hole; a rainfall simulation system is arranged on a top cover of the tempered glass model casing. The testing device is simple in structure, rainfall induced deformation and landslide experiments of different side slope models can be made, and various experiments of soil-water feature curve testing on unsaturated soil drying and wetting process can be made with high reliability and precision.
Description
technical field:
The utility model belongs to technical field of civil engineering, be particularly related to the relevant soil test case of soil-water characteristic curve of rainfall landslide and unsaturated soil, for the test of rainfall landslide and unsaturated soil mechanics soil-water characteristic curve testing research in Geotechnical Engineering field.
background technology:
Landslide is a kind of serious geologic hazard, brings about great losses usually to industrial and agricultural production and people's lives, disaster that have or even destructive.Rainfall is one of principal element of induced landslide, and particularly heavy showers is very easily brought out large volume landslide, serious threat people's life and property safety.And still insufficient to Rainfall landslide understanding and understanding at present, under further investigation condition of raining, instability of deposit body rule has important theory significance and engineering practical value to Prediction and Forecast of Landslide with preventing and reducing natural disasters.And field monitoring is subject to conventionally that equipment is buried underground, site condition and human factor etc. affect, uneconomical and waste time and energy.Rainfall landslide simulation laboratory test is the important tool that discloses Rainfall landslide mechanism and rule, can observe intuitively the process of deformation and failure of side slope, for the research on Rainfall landslide provides the firsthand information.
At present, rainfall Landslide Model apparatus function is more single both at home and abroad, most of devices cannot simultaneous observation rainfall in inside soil body volumetric water content and pore water pressure value over time, the cost of suction sensor is large, also cannot obtain the corresponding soil-water characteristic curve of the soil body.
utility model content:
The purpose of this utility model is in order to provide a kind of easy to operate, multiple functional, be suitable for rainfall and bring out slope deforming and process of landslides test, and unsaturated soil is dry and the test of the soil-water characteristic curve of slaking process.Testing efficiency is high, the indoor electricity testing device that can effectively solve that existing instrument test result is single, the multi-functional rainfall of the unsettled problem of test result is come down.
The purpose of this utility model is achieved like this:
The utility model is multi-functional rainfall landslide laboratory testing rig, comprise tempered glass model casing, be contained in the metal framework of the raising model casing casing intensity on tempered glass model tank wall, tempered glass model casing symmetria bilateralis is distributed with many drainings sub sensor mounting hole, pore water pressure sensor mounting hole, moisture transducer, pore water pressure sensor is contained in respectively moisture transducer mounting hole, on pore water pressure sensor mounting hole, tempered glass model casing bottom is metal base plate, there is osculum bottom, tempered glass model casing Qianmen filter screen is set at osculum place washes away obstruction osculum to prevent soil sample, the top cover of tempered glass model casing is provided with rainfall simulation system.
In above-mentioned rainfall simulation plan system, there are aqueduct, flusher and rainfall control system, can regulate and control rainfall amount size by rainfall control system.
On above-mentioned aqueduct, there is Water supply switch valve valve.
Above-mentioned moisture transducer and pore water pressure sensor with can carry out analyzing and processing and the corresponding data acquisition system (DAS) that draws tested soil sample internal volume water cut and pore water pressure is connected, data acquisition system (DAS) buyable to detection signal.
On above-mentioned metal base plate, be bolted metab, to guarantee the stability of tempered glass simulation box.
Above-mentioned tempered glass model casing top cover is connected with casing by bolt, prevents top cover dislocation slippage.
Water-impervious processing is done respectively in above-mentioned tempered glass model casing sidewall moisture transducer mounting hole, pore water pressure sensor mounting hole, metal base plate and tempered glass model casing stitching portion.
On above-mentioned tempered glass model casing sidewall, there is coordinate grid, in the test of rainfall landslide, can, take coordinate grid as reference, accurately observe slope deformation destruction process, record size and the position of slip surface of deflection.
There is water discharging valve at the osculum place of the bottom, Qianmen of above-mentioned tempered glass model casing.
In above-mentioned device, be furnished with evaporating dish, in the time measuring the soil-water characteristic curve of dry run, be used for measuring evaporation capacity.
The utility model step in the time carrying out the test of rainfall landslide with native water characteristic curve test is as follows:
1. be first ready for the soil for test of making side slope model, pre-estimate according to the dry density of controlling and placement in layers thickness the soil amount needing.
2. open Qianmen, progressively banket according to the side slope model of test design, fill in process and should make each sensor fully contact with the soil body and fill in reality, guarantee the corresponding data of the Measurement accuracy soil body.For the homogenieity of maintenance slope body as much as possible, fill and answer placement in layers, successively compacting.
3. complete after the filling of model, shut Qianmen, open water discharging valve, according to test design rainfall amount, open water supply valve switch, control rainfall by regulating rainfall control system to regulate, start rain test.Can be by the deformation and failure situation of the coordinate grid observational record side slope of tempered glass model casing sidewall in rainfall.Because the variation of the volumetric water content to tested inside soil body and pore water pressure in real time of moisture transducer, pore water pressure sensor and data acquisition system (DAS) is tested, finally can obtain volumetric water content according to the data that record
θ ω i and pore water pressure
u wi .
4. draw native water characteristic curve moistening, that change process: according to the model of experimental test result and sensor, specification, calculating corresponding matric suction is take matric suction as horizontal ordinate, volumetric water content is ordinate, draws the soil-water characteristic curve of tested soil sample slaking process.
5. obtain the native water characteristic curve of dry run: stop rainfall, in the time that osculum no longer includes water discharge, close water discharging valve, close Water supply switch valve valve, take off top cover, allow soil sample naturally dry, carry out the test of the soil-water characteristic curve of dry run, and be used for measuring evaporation capacity with evaporating dish under same environment.Obtain the volumetric water content of the soil body by moisture transducer and pore water pressure sensor
θ ω i and pore water pressure
u wi thereby, obtain the soil-water characteristic curve of tested soil sample dry run in a certain evaporation capacity situation.
Finally obtain native water characteristic curve schematic diagram dry and slaking process.
The utility model is suitable for the test of the soil-water characteristic curve of the test of rainfall landslide and unsaturated soil, has following advantage:
1. easy to operate, multiple functional, testing efficiency is high, can effectively solve existing instrument test result single, the unstable coarse problem of test result.
2. by moisture transducer and pore water pressure sensor, the volumetric water content in the tested soil body and pore water pressure are detected in real time, detection signal is sent to acquisition system simultaneously, obtain real-time dynamic volumetric water content and pore water pressure force data, the stability and the precision that improve test reduce manual record workload simultaneously.
3. tempered glass case sidewall is symmetrically distributed with many row pressures power installation of sensors hole moisture transducer mounting hole and accesses moisture transducer and pore water pressure sensor, can meet the rainfall landslide test of differing heights and different gradient side slope model.
4. on tempered glass model casing sidewall, having coordinate grid, in the test of rainfall landslide, can coordinate grid be reference, accurately observes slope deformation destruction process, records size and the position of slip surface of deflection.
5. the utility model can carry out separately the test of the dry and humidifying soil-water characteristic curve of unsaturated soil, only need soil sample layering to be laid in chamber, according to previous experiments step, regulate rainfall amount to carry out the test of slaking process, take off top cover and naturally dry by soil sample the test of carrying out dry run, finally can obtain soil-water characteristic curve dry and slaking process, simple to operate, testing efficiency is high.
accompanying drawing explanation:
Fig. 1 is front view of the present utility model.
Fig. 2 is the A-A cut-open view in Fig. 1.
Fig. 3 is the B-B cut-open view in Fig. 1.
Fig. 4 is tempered glass model casing front door structure schematic diagram.
Fig. 5 is tempered glass model casing cap structure schematic diagram.
Fig. 6 is tempered glass model casing evaporation structure schematic diagram.
Fig. 7 is coordinate grid partial schematic diagram of the present utility model.
Fig. 8 is landslide of the present utility model test simulation schematic diagram.
Fig. 9 is dry and slaking process soil water characteristic curve figure.
embodiment
Referring to Fig. 1～Fig. 8, the multi-functional rainfall of the present embodiment landslide laboratory testing rig, comprises tempered glass model casing 1, is contained in the metal framework 2 that improves casing intensity on tempered glass model casing.On many rows pore water pressure sensor mounting hole 3-1, moisture transducer mounting hole 3-2 that tempered glass model casing 1 symmetria bilateralis arranges, be separately installed with pore water pressure sensor 4 and moisture transducer 5.Tempered glass model casing bottom is metal base plate 6.Tempered glass model casing 1 front portion is not airtight, Qianmen 7 is set.As Figure 1 and Figure 4, osculum 8 is arranged at 7 bottoms, Qianmen, and filter screen 9 is set at osculum 8 places washes away obstruction osculum to prevent soil sample, as shown in Figure 1, shown in Figure 5, the top cover 10 of tempered glass model casing is provided with rainfall simulation system, comprise aqueduct 11, flusher 12 and rainfall control system 13, can regulate and control rainfall amount size by rainfall control system 13.Aqueduct 11 in rainfall control system is also provided with Water supply switch valve valve 21.As shown in Figure 2, moisture transducer 4 and pore water pressure sensor 5 with can carry out analyzing and processing and the corresponding data acquisition system (DAS) 14 that draws tested soil sample internal volume water cut and pore water pressure is connected to detection signal.As shown in Figure 1, tempered glass model casing bottom arranges metab 20, and metab 20 and metal framework 2 all pass through bolt 18 and be connected its stability of assurance with metal base plate.Top cover 10 is connected with casing 1 by bolt 19, prevents top cover 10 slippage that misplaces.The mounting hole 3-1,3-2 of described tempered glass model casing 1 sidewall access sensor, and water-impervious processing is all done in metal base plate 6 and tempered glass model casing 1 stitching portion.As shown in Fig. 1, Fig. 7, Fig. 8, tempered glass model casing 1 sidewall is provided with coordinate grid 17, in the test of rainfall landslide, can, take coordinate grid 17 as reference, accurately observe slope deformation destruction process, records size and the position of slip surface of deflection.As shown in Figure 1, osculum 8 places of 7 bottoms, Qianmen are also provided with water discharging valve 15.In device, be also furnished with evaporating dish 16 as shown in Figure 6, in the time obtaining the soil-water characteristic curve of dry run, be used for measuring evaporation capacity.
Fig. 8 is landslide of the present utility model test simulation schematic diagram.In figure, sequence number 22 is slight slope Mathematical Model of heaped-up 22.
Fig. 9 is dry and slaking process soil water characteristic curve figure.
Claims (9)
1. multi-functional rainfall landslide laboratory testing rig, it is characterized in that comprising tempered glass model casing, be contained in the metal framework of the raising casing intensity on tempered glass model tank wall, tempered glass model casing symmetria bilateralis is distributed with many drainings sub sensor mounting hole, pore water pressure sensor mounting hole, moisture transducer, pore water pressure sensor is contained in respectively moisture transducer mounting hole, on pore water pressure sensor mounting hole, tempered glass model casing bottom is metal base plate, there is osculum bottom, tempered glass model casing Qianmen filter screen is set at osculum place washes away obstruction osculum to prevent soil sample, on the top cover of tempered glass model casing, there is rainfall simulation system.
2. multi-functional rainfall according to claim 1 landslide laboratory testing rig, is characterized in that having aqueduct, flusher and rainfall control system in rainfall simulation system, can be regulated and be controlled rainfall amount size by rainfall control system.
3. multi-functional rainfall according to claim 2 landslide laboratory testing rig, is characterized in that on aqueduct, there is Water supply switch valve valve.
4. according to the multi-functional rainfall landslide laboratory testing rig described in claim 1 or 2 or 3, it is characterized in that moisture transducer and pore water pressure sensor with can to detection signal carry out analyzing and processing also the corresponding data acquisition system (DAS) that draws tested soil sample internal volume water cut and pore water pressure be connected.
5. according to the multi-functional rainfall landslide laboratory testing rig described in claim 1 or 2 or 3, it is characterized in that being bolted metab on tempered glass simulation box metal base plate.
6. according to the multi-functional rainfall landslide laboratory testing rig described in claim 1 or 2 or 3, it is characterized in that top cover is connected with casing by bolt, prevent top cover dislocation slippage.
7. according to the multi-functional rainfall landslide laboratory testing rig described in claim 1 or 2 or 3, it is characterized in that tempered glass model casing sidewall is provided with coordinate grid, in the test of rainfall landslide, can be take coordinate grid as reference, accurately observe slope deformation destruction process, record size and the position of slip surface of deflection.
8. according to the multi-functional rainfall landslide laboratory testing rig described in claim 1 or 2 or 3, it is characterized in that there is water discharging valve at the osculum place of bottom, Qianmen.
9. according to the multi-functional rainfall landslide laboratory testing rig described in claim 1 or 2 or 3, it is characterized in that being furnished with evaporating dish in device, in the time measuring the soil-water characteristic curve of dry run, be used for measuring evaporation capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320869786.1U CN203643442U (en) | 2013-12-27 | 2013-12-27 | Multifunctional rainfall landslide indoor testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320869786.1U CN203643442U (en) | 2013-12-27 | 2013-12-27 | Multifunctional rainfall landslide indoor testing device |
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| CN203643442U true CN203643442U (en) | 2014-06-11 |
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| CN201320869786.1U Expired - Fee Related CN203643442U (en) | 2013-12-27 | 2013-12-27 | Multifunctional rainfall landslide indoor testing device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807976A (en) * | 2015-05-12 | 2015-07-29 | 北京师范大学 | Landslide geotechnical model test device |
| CN105116111A (en) * | 2015-08-24 | 2015-12-02 | 广西大学 | Device and method for measuring influences of rainfall capacity and matrix suction on side slope |
| CN103675238B (en) * | 2013-12-27 | 2016-04-13 | 成都理工大学 | Multifunctional rainfall landslide laboratory testing rig |
| CN106706886A (en) * | 2017-02-27 | 2017-05-24 | 西安长庆科技工程有限责任公司 | Experiment device and method of rainfall side slope model under lateral non-uniform loading condition |
| CN107247128A (en) * | 2017-05-16 | 2017-10-13 | 华北水利水电大学 | The model test apparatus of retrogressive landslide sliding process under real-time measurement condition of raining |
| CN108827592A (en) * | 2018-06-08 | 2018-11-16 | 哈尔滨工程大学 | A kind of test platform can provide low temperature environment |
| CN110108853A (en) * | 2019-04-29 | 2019-08-09 | 中国矿业大学(北京) | A kind of experimental provision that studying aqueous side slope and method |
| CN110161214A (en) * | 2019-05-31 | 2019-08-23 | 贵州大学 | A kind of lower landslide physical model test equipment of drying and watering cycle effect |
| CN112858633A (en) * | 2021-01-14 | 2021-05-28 | 三门峡职业技术学院 | Large-thickness collapsible loess humidifying deformation experimental device |
| CN112986535A (en) * | 2021-02-20 | 2021-06-18 | 北方工业大学 | Test device for simulating rainstorm to induce slag soil landslide |
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2013
- 2013-12-27 CN CN201320869786.1U patent/CN203643442U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675238B (en) * | 2013-12-27 | 2016-04-13 | 成都理工大学 | Multifunctional rainfall landslide laboratory testing rig |
| CN104807976A (en) * | 2015-05-12 | 2015-07-29 | 北京师范大学 | Landslide geotechnical model test device |
| CN104807976B (en) * | 2015-05-12 | 2016-07-06 | 北京师范大学 | A kind of device for the geotechnical model test that comes down |
| CN105116111A (en) * | 2015-08-24 | 2015-12-02 | 广西大学 | Device and method for measuring influences of rainfall capacity and matrix suction on side slope |
| CN106706886A (en) * | 2017-02-27 | 2017-05-24 | 西安长庆科技工程有限责任公司 | Experiment device and method of rainfall side slope model under lateral non-uniform loading condition |
| CN106706886B (en) * | 2017-02-27 | 2023-05-30 | 西安长庆科技工程有限责任公司 | Rainfall slope model experiment device and method under lateral non-uniform loading condition |
| CN107247128B (en) * | 2017-05-16 | 2020-08-14 | 华北水利水电大学 | Model test device for measuring traction type landslide sliding process under rainfall condition in real time |
| CN107247128A (en) * | 2017-05-16 | 2017-10-13 | 华北水利水电大学 | The model test apparatus of retrogressive landslide sliding process under real-time measurement condition of raining |
| CN108827592A (en) * | 2018-06-08 | 2018-11-16 | 哈尔滨工程大学 | A kind of test platform can provide low temperature environment |
| CN110108853A (en) * | 2019-04-29 | 2019-08-09 | 中国矿业大学(北京) | A kind of experimental provision that studying aqueous side slope and method |
| CN110108853B (en) * | 2019-04-29 | 2021-06-25 | 中国矿业大学(北京) | Experimental device and method for researching water-containing side slope |
| CN110161214A (en) * | 2019-05-31 | 2019-08-23 | 贵州大学 | A kind of lower landslide physical model test equipment of drying and watering cycle effect |
| CN112858633A (en) * | 2021-01-14 | 2021-05-28 | 三门峡职业技术学院 | Large-thickness collapsible loess humidifying deformation experimental device |
| CN112986535A (en) * | 2021-02-20 | 2021-06-18 | 北方工业大学 | Test device for simulating rainstorm to induce slag soil landslide |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20151227 |
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| EXPY | Termination of patent right or utility model |