CN105467099A - Combined type landslide physical model test device - Google Patents
Combined type landslide physical model test device Download PDFInfo
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Abstract
The invention provides a combined type landslide physical model test device. The device comprises a base, a frame, a lifting mechanism and a thrust loading mechanism. The base is of an L-shaped blocky structure. The frame comprises a front groove, a rear groove and supporting bases. The inner side of the front groove and the inner side of the rear groove are hinged through a pin shaft. The two ends of the pin shaft are fixed to the horizontal plane of the base through the supporting bases. The lifting mechanism is installed on the horizontal plane of the base and connected with the bottom of the front groove and the bottom of the rear groove. One end of the thrust loading mechanism is hinged to the perpendicular plane of the base, and the other end of the thrust loading mechanism is arranged inside the rear groove. The combined type landslide physical model test device is simple in structure, easy and convenient to operate and capable of achieving the purpose of multi-group parallel tests of landslides of different types and improving the comparison of the landslide tests.
Description
Technical field
The invention belongs to the technical field of geologic hazard model test, particularly relate to a kind of combined type landslide physical model test device.
Background technology
Landslide is the large geologic hazard being only second to earthquake, and landslide phenomenon is the process of development and change, studies its development and change process, is not only its rule of understanding, the more important thing is in order to effectively preventing landslide; The Failure type on landslide is varied, retrogressive landslide, thrust load caused landslide and combined type can be divided into come down by its loading characteristic, meanwhile, be divided into front portion, middle part, rear portion syllogic to further illustrate the deformation evolutionary process on dissimilar landslide on landslide: thrust load caused landslide is due to the long-term loading of the trailing edge that comes down, produce by the rear process destroyed to front destruction gradually, final integral, namely deformation process shows as: rear portions deform-middle part distortion-anterior distortion-bulk deformation; Retrogressive landslide is due to hand excavation or river degradation, cause the disappearance of anterior crucial master slider, produce the process of progressively deformation failure, final integral destruction from front to back, namely deformation process shows as: anterior distortion-middle part distortion-rear portions deform-bulk deformation; Simultaneously combined type landslide has retrogressive landslide and thrust load caused landslide feature, due to the crucial anti-skid piece of disappearance of leading edge and trailing edge loading effect, produce and destroyed gradually to centre by front and back, the process that final integral is destroyed, namely deformation process shows as: first anterior distortion and rear portions deform are out of shape-middle part distortion-bulk deformation.
Chinese scholars attempts the practical distortion evolutionary process being come inverting landslide by a large amount of model tests, carry out a large amount of model investigations, and obtain remarkable progress at the everyway such as theoretical research and technical research of model test, slope model test will play an increasingly important role in research on landslide, and research on landslide will have larger development.
In landslide physical model test process, the real bearing state on simulation landslide is the key of reduction landslide practical distortion evolutionary process, now the model test apparatus of the main simulation landslide stress adopted mainly contains oblique model charger, trailing edge thrust model charger and centrifugal model charger, and these Landslide Model chargers achieve the reproduction of Landslide Deformation process to a certain extent.
But, although these slope model test devices and test method facilitate the research of Landslide Problems to a certain extent, limitation to a certain degree or defect are still existed for existing landslide physical model test device:
(1) existing landslide physical model test loading method can only the simple and bulk deformation situation of Study of Landslides, and in Practical Project, Landslide Deformation is very complicated, as retrogressive landslide, thrust load caused landslide and have retrogressive landslide and thrust load caused landslide feature combined type landslide, not generally produce bulk deformation instantaneously owing to coming down, but local is progressively deformed into bulk deformation destruction, existing Landslide Model device cannot realize the landslide practical distortion process inverting under Various Complex distortion.
(2) existing employing slope model test loading method is all to deform destructions by changing landslide integrated stress condition to entirety, can not change respectively, cannot reach the process of being by stages out of shape to front portion, landslide or rear portion stress; In addition, the front portion on retrogressive landslide and combined type landslide first deformation failure (similar landslide anterior Unloading Effect) under the effect of river degradation, hand excavation etc., existing method cannot realize.
(3) existing employing slope model test loading method is substantially all by loading Landslide Model until destroy to realize Landslide Deformation Whole Process Simulation, cannot realize unloading or unloading to Landslide Model and load the lab simulation simultaneously carried out.
(4) existing landslide physical model test device can not change the stressing conditions of Landslide Model according to specific requirement, be difficult to meet a model test apparatus and be applicable to different Landslides tests, to such an extent as to different model test apparatus is developed to dissimilar slope model test, cause very large economic waste.
Summary of the invention
Technical matters to be solved by this invention is for above-mentioned Problems existing, a kind of combined type landslide physical model test device is provided, the inclination angle of landslide physical and the stress state of different parts can be regulated easily and quickly, dissimilar Landslide Deformation is conformed to practical distortion process.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of combined type landslide physical model test device, it is characterized in that, comprise base, framework, elevating mechanism and thrust load maintainer, described base is " L " type block structure, described framework comprises front groove, pit and supporting seat, the inner side of described front groove and pit is hinged by bearing pin, described bearing pin two ends are fixed on the surface level of base by supporting seat, described elevating mechanism is installed on base surface level, be connected with the bottom of pit with front groove respectively, the vertical plane of described thrust load maintainer one end and base is hinged, the other end is installed in pit inner.
By such scheme, described elevating mechanism comprises front lifting jack and rear lifting jack, and the bottom of described front lifting jack and rear lifting jack is all fixed on base surface level, and top is connected with bottom described front groove and pit respectively by contiguous block.
By such scheme, described thrust load maintainer comprises electro-hydraulic loading machine and load plate, the hinged-support that one end of described electro-hydraulic loading machine and described base vertical plane are installed is hinged, the other end is connected with the end face outside center of described load plate, it is inner that load plate is placed in described pit, and the height of load plate is corresponding with the height of landslide physical.
By such scheme, described front groove and pit are by base plate and biside plate composition, and the outside of front groove is provided with front apron, and the outer side center of the biside plate of pit is connected by limiting plate, and described load plate is spacing by described limiting plate anticreep.
By such scheme, described front groove and pit are installed on angle tiltmeter.
The invention has the beneficial effects as follows: a kind of combined type landslide physical model test device is provided, by the controlled loading of thrust load maintainer and the lifting of elevating mechanism accurate stable, to simulate the stress state of different parts before and after landslide, realize the accurate reproduction simulation on dissimilar landslide, solving researchist in the past cannot the problem of analogue enlargement landslide front and rear part random variation, this apparatus structure is simple, resistance to overturning good, durability is good, can reuse, operating process is easy, have a extensive future, remarkable in economical benefits.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the side view of one embodiment of the invention.
Fig. 3 is the vertical view of one embodiment of the invention.
Wherein: 1-base, groove before 2-, 3-pit, 4-supporting seat, lifting jack before 5-, lifting jack after 6-, 7-contiguous block, 8-electro-hydraulic loading machine, 9-load plate, 10-hinged-support, 11-limiting plate, 12-landslide physical.
Embodiment
For understanding the present invention better, below in conjunction with drawings and Examples, the invention will be further described.
As Figure 1-3, a kind of combined type landslide physical model test device, comprise base 1, framework, elevating mechanism and thrust load maintainer, base is " L " type block structure, framework comprises front groove 2, pit 3 and supporting seat 4, the inner side of front groove and pit is hinged by bearing pin, bearing pin two ends are fixed on the surface level of base by supporting seat, elevating mechanism is installed on base surface level, be connected with the bottom of pit with front groove respectively, the vertical plane of thrust load maintainer one end and base is hinged, and the other end is installed in pit inner.
Elevating mechanism comprises front lifting jack 5 and rear lifting jack 6, the bottom of forward and backward lifting jack is all fixed on base surface level, top is connected with bottom front groove and pit respectively by contiguous block 7, front groove and pit are installed on angle tiltmeter, by the stroke of lifting jack, robotization accurately controls the inclination angle of the framework of landslide physical, is realized continuous, the stability contorting that are elevated forward and backward groove by angle tiltmeter, the lifting angle of all right forward and backward groove of real time record framework.
Thrust load maintainer comprises electro-hydraulic loading machine 8 and load plate 9, the hinged-support 10 that one end of electro-hydraulic loading machine and base vertical plane are installed is hinged, the other end is connected with the end face outside center of load plate, load plate is placed in pit inside, by the descending operation of electro-hydraulic loading machine and pit, can realize simultaneously landslide physical trailing edge not the same period subordinate load thrust load and inclination hierarchical loading, and realize landslide physical leading edge load shedding by the decline of front groove.
Front groove and pit are by base plate and biside plate composition, the outside of front groove is provided with front apron, the outer side center of the biside plate of pit is connected by limiting plate 11, load plate is spacing by limiting plate anticreep, the height of load plate is corresponding with the height of landslide physical 12, in process of the test, can at any time according to the trailing edge height change of landslide physical, change the load plate of differing heights, the thrust adding carrier aircraft is effectively loaded in landslide physical, front groove and pit can rotate up and down around framework bearing pin, and the side plate of front groove and pit the same side fits tightly and is independent of each other in rotation process, be convenient to realize landslide and add unloading operation.
Adopt the present invention to carry out the research of combined type Landslide Deformation destructive process, its job step is:
1, the design of Landslide Model: according to the demand of research work, generally changes landslide scale model by the principle of similitude, is regulated the slide angle of Landslide Model by elevating mechanism, and is equipped with analog material and makes Landslide Model; Meanwhile, at the inside of Landslide Model and corresponding monitoring equipment such as outside laying stress, displacement etc.;
2, test adds unloading: the Thrust of Landslide size applied needed for the trailing edge of theory calculate landslide, adopts electro-hydraulic loading machine to carry out thrust classification through load plate at Landslide Model rear portion and progressively load; Meanwhile, lifting jack before opening, by the retracted in length of front lifting jack, front groove is rotated continuously around bearing pin, rotational angle is by angle tiltmeter Real-Time Monitoring record; The rear load (anterior unloading) on analog composite formula landslide, by front and back to middle process of being out of shape successively, reach deformation process and the combined type practical distortion that comes down and conform to;
3, data acquisition and processing (DAP): the data required for being gathered by relevant data collecting instrument, such as soil pressure, landslide inner (surface) displacement, pore water pressure, temperature etc.
4, off-test: release elevating mechanism and closedown electro-hydraulic loading machine, and removal load plate; Reclaim relevant data acquisition equipment and Landslide Model after removing destruction, washing moulding test framework.
Adopt the present invention also can carry out the research of retrogressive landslide process of deformation and failure, its structure is substantially identical with combined type Landslide Deformation destructive process with job step, only need by the retracted in length of front lifting jack, front groove to be rotated continuously around bearing pin in different just steps 2, carry out thrust without the need to adopting electro-hydraulic loading machine to load, the anterior process progressively unloading, be out of shape successively from front to back of simulation retrogressive landslide, reaches deformation process and conforms to retrogressive landslide practical distortion.
Adopt the present invention also can carry out the research of thrust load caused landslide process of deformation and failure, its structure is substantially identical with combined type Landslide Deformation destructive process with job step, as long as carry out thrust classification through load plate at Landslide Model rear portion by electro-hydraulic loading machine in different just steps 2 progressively to load, before driving without the need to front lifting jack, groove rotates, simulation thrust load caused landslide rear portion loads gradually, from rear to front process of being out of shape successively, reach deformation process and conform to thrust load caused landslide practical distortion.
The present invention is by the thrust Loading Control of elevating mechanism to framework lift adjustment and trailing edge, can realize that dissimilar landslide is stressed to be consistent with actual boundary condition, come down stressed size and Orientation continuously, accurately adjustable, and it is stable to add uninstall process, be applicable to the requirement of the process of deformation and failure physical experiments on dissimilar landslide, and realize recycling.So its protection domain is not limited to above-described embodiment.
Claims (5)
1. a combined type landslide physical model test device, it is characterized in that, comprise base, framework, elevating mechanism and thrust load maintainer, described base is " L " type block structure, described framework comprises front groove, pit and supporting seat, the inner side of described front groove and pit is hinged by bearing pin, described bearing pin two ends are fixed on the surface level of base by supporting seat, described elevating mechanism is installed on base surface level, be connected with the bottom of pit with front groove respectively, the vertical plane of described thrust load maintainer one end and base is hinged, and the other end is installed in pit inner.
2. a kind of combined type landslide physical model test device according to claim 1, it is characterized in that, described elevating mechanism comprises front lifting jack and rear lifting jack, the bottom of described front lifting jack and rear lifting jack is all fixed on base surface level, and top is connected with bottom described front groove and pit respectively by contiguous block.
3. a kind of combined type landslide physical model test device according to claim 1, it is characterized in that, described thrust load maintainer comprises electro-hydraulic loading machine and load plate, the hinged-support that one end of described electro-hydraulic loading machine and described base vertical plane are installed is hinged, the other end is connected with the end face outside center of described load plate, it is inner that load plate is placed in described pit, and the height of load plate is corresponding with the height of landslide physical.
4. a kind of combined type landslide physical model test device according to claim 3, it is characterized in that, described front groove and pit are by base plate and biside plate composition, the outside of front groove is provided with front apron, the outer side center of the biside plate of pit is connected by limiting plate, and described load plate is spacing by described limiting plate anticreep.
5. a kind of combined type landslide physical model test device according to claim 1, is characterized in that, described front groove and pit are installed on angle tiltmeter.
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| CN201511020447.6A CN105467099A (en) | 2015-12-30 | 2015-12-30 | Combined type landslide physical model test device |
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| CN201511020447.6A CN105467099A (en) | 2015-12-30 | 2015-12-30 | Combined type landslide physical model test device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526125A (en) * | 2016-10-14 | 2017-03-22 | 长江水利委员会长江科学院 | Dual-varying-slope erosion groove and interflow determining instrument and determining method thereof |
| CN106836321A (en) * | 2017-03-22 | 2017-06-13 | 长江水利委员会长江科学院 | A kind of side slope geotechnical centrifugal model test surface relief arrangement |
| CN108107188A (en) * | 2017-12-12 | 2018-06-01 | 中国地质大学（武汉） | A kind of adjustable experimental rig of load angle |
| CN109164243A (en) * | 2018-07-26 | 2019-01-08 | 河海大学 | A kind of determining miscellaneous fill carefully sees the test model of damping parameter |
| CN109213206A (en) * | 2018-08-10 | 2019-01-15 | 中国地质大学（武汉） | A kind of upper hopper chute vertical angle regulating device based on landslide physical model test |
| CN109507390A (en) * | 2018-11-14 | 2019-03-22 | 商丘工学院 | A kind of geotechnical engineering slope model test case |
| CN110158535A (en) * | 2019-05-24 | 2019-08-23 | 吉林大学 | A kind of Landslide Dam Whole Process Simulation and dam break mechanistic assays device and test method |
| CN111638319A (en) * | 2020-06-15 | 2020-09-08 | 南昌大学 | Test device for simulating rainfall seepage |
| CN111719599A (en) * | 2020-05-13 | 2020-09-29 | 中国地质大学（武汉） | Multilayer slide belt landslide-anti-slide pile model test system and method |
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| CN102928573A (en) * | 2012-10-26 | 2013-02-13 | 中国地质大学（武汉） | Hydraulic adjusting loading device for self-weight type slide slope physical model experiment |
| CN103353516A (en) * | 2013-05-27 | 2013-10-16 | 中国地质大学（武汉） | Large movable lateral uplifting composite lading slope physical model test apparatus |
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| CN204288618U (en) * | 2014-12-26 | 2015-04-22 | 中国地质大学（武汉） | The Landslide Model analogue means of a kind of adjustable landslide width |
| CN205263086U (en) * | 2015-12-30 | 2016-05-25 | 中国地质大学（武汉） | Combined type landslide physical model test device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH03211700A (en) * | 1990-01-17 | 1991-09-17 | Matsushita Electric Ind Co Ltd | Landslide automatic watching device |
| RU2512199C2 (en) * | 2012-05-04 | 2014-04-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования Кабардино-Балкарская государственная сельскохозяйственная академия им. В.М. Кокова (ФГБОУ ВПО КБГСХА) | Method to erect anti-landslide structure of combined design |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526125A (en) * | 2016-10-14 | 2017-03-22 | 长江水利委员会长江科学院 | Dual-varying-slope erosion groove and interflow determining instrument and determining method thereof |
| CN106836321A (en) * | 2017-03-22 | 2017-06-13 | 长江水利委员会长江科学院 | A kind of side slope geotechnical centrifugal model test surface relief arrangement |
| CN108107188A (en) * | 2017-12-12 | 2018-06-01 | 中国地质大学（武汉） | A kind of adjustable experimental rig of load angle |
| CN108107188B (en) * | 2017-12-12 | 2019-12-17 | 中国地质大学（武汉） | Testing device with adjustable loading angle |
| CN109164243A (en) * | 2018-07-26 | 2019-01-08 | 河海大学 | A kind of determining miscellaneous fill carefully sees the test model of damping parameter |
| CN109164243B (en) * | 2018-07-26 | 2021-09-07 | 河海大学 | Test model for determining micro-damping parameters of miscellaneous filling soil |
| CN109213206B (en) * | 2018-08-10 | 2021-05-14 | 中国地质大学（武汉） | Upper chute vertical angle adjusting device based on landslide physical model test |
| CN109213206A (en) * | 2018-08-10 | 2019-01-15 | 中国地质大学（武汉） | A kind of upper hopper chute vertical angle regulating device based on landslide physical model test |
| CN109507390A (en) * | 2018-11-14 | 2019-03-22 | 商丘工学院 | A kind of geotechnical engineering slope model test case |
| CN109507390B (en) * | 2018-11-14 | 2021-08-24 | 商丘工学院 | Geotechnical engineering landslide model test box |
| CN110158535A (en) * | 2019-05-24 | 2019-08-23 | 吉林大学 | A kind of Landslide Dam Whole Process Simulation and dam break mechanistic assays device and test method |
| CN110158535B (en) * | 2019-05-24 | 2023-12-01 | 吉林大学 | Device and method for simulating whole landslide river-blocking process and dam-break mechanism test |
| CN111719599B (en) * | 2020-05-13 | 2021-03-30 | 中国地质大学（武汉） | Multilayer slide belt landslide-anti-slide pile model test system and method |
| CN111719599A (en) * | 2020-05-13 | 2020-09-29 | 中国地质大学（武汉） | Multilayer slide belt landslide-anti-slide pile model test system and method |
| CN111638319A (en) * | 2020-06-15 | 2020-09-08 | 南昌大学 | Test device for simulating rainfall seepage |
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Application publication date: 20160406 |