CN108254504A - The experimental rig and its test method on simulated sea bottom landslide - Google Patents

The experimental rig and its test method on simulated sea bottom landslide Download PDF

Info

Publication number
CN108254504A
CN108254504A CN201810027064.9A CN201810027064A CN108254504A CN 108254504 A CN108254504 A CN 108254504A CN 201810027064 A CN201810027064 A CN 201810027064A CN 108254504 A CN108254504 A CN 108254504A
Authority
CN
China
Prior art keywords
slideway
mud
casing
landslide
experimental rig
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
Application number
CN201810027064.9A
Other languages
Chinese (zh)
Inventor
单治钢
孙淼军
徐学勇
杜文博
熊潇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Powerchina Huadong Engineering Corp Ltd
Original Assignee
Powerchina Huadong Engineering Corp Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Powerchina Huadong Engineering Corp Ltd filed Critical Powerchina Huadong Engineering Corp Ltd
Priority to CN201810027064.9A priority Critical patent/CN108254504A/en
Publication of CN108254504A publication Critical patent/CN108254504A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00

Abstract

The present invention relates to the experimental rigs and its test method on a kind of simulated sea bottom landslide.The object of the present invention is to provide a kind of experimental rigs and its test method on simulated sea bottom landslide simple in structure, easy to operate.The technical scheme is that:A kind of experimental rig on simulated sea bottom landslide, it is characterised in that:With model casing, there is the glass surface convenient for observing and nursing case inner case on model casing, the slideway being in tilted layout is equipped in the model casing, slideway lower end is rotatably connected support plate, support plate is fixed on model casing, and the slideway upper end is through Slide-way tilt angle regulating mechanism link model case, slideway upper surface covering bed course, the top on the slideway top is equipped with the mudflow generating mechanism for discharging mud, and corresponding installation of slide track is used to monitor the mechanism for monitoring of slurry condition on slideway.The present invention is suitable for exploitation to ocean engineering research field.

Description

The experimental rig and its test method on simulated sea bottom landslide
Technical field
The present invention relates to the experimental rigs and its test method on a kind of simulated sea bottom landslide.It is led suitable for exploitation to ocean engineering research Domain.
Background technology
Submarine landslide be most important deposition process that deposit is migrated from from shelf break band to deep-sea basin it One.Submarine landslide can be in the case of terrain slope very little, and the clast stream formed, can high-speed slide by " water skiing " effect It is remote to hundreds of kms, seriously endanger the facilities such as offshore and gas development platform, oil-gas pipeline and submarine cable.With domestic and international exploitation Deepwater is continuously increased, and seabed erosion caused by this deposition is increasingly taken seriously.Therefore, submarine landslide Mechanism and its geologic risk research should also be strengthened.
At present, slope model test can consider Various Complex factor and complicated boundary condition simultaneously, can very intuitively Reflect the migration process of submarine landslide long range, this can not only preferably recognize the rule of submarine landslide, also can effectively prevent Control the foundation that submarine landslide provides strong science.
However current submarine landslide model test apparatus is more the submarine landslide under gas hydrate dissociation, it is main It to be directed to the reason of submarine landslide occurs to be studied, but the migration mechanism for the soil body that comes down after submarine landslide is failed preferably Simulation or the research for lacking this respect.
Invention content
The technical problem to be solved by the present invention is to:In view of the above problems, it provides a kind of simple in structure, easy to operate Simulated sea bottom landslide experimental rig and its test method.
The technical solution adopted in the present invention is:A kind of experimental rig on simulated sea bottom landslide, it is characterised in that:With mould Molding box has the glass surface convenient for observing and nursing case inner case on model casing, the slideway being in tilted layout is equipped in the model casing, Slideway lower end is rotatably connected support plate, and support plate is fixed on model casing, and the slideway upper end connects through Slide-way tilt angle regulating mechanism Model casing, slideway upper surface covering bed course are connect, the top on the slideway top is equipped with the mudflow generating mechanism for discharging mud, Corresponding installation of slide track is used to monitor the mechanism for monitoring of slurry condition on slideway.
The high-speed camera corresponds to the mudflow generating mechanism outlet, the middle part of the slideway and bottom setting respectively.
The monitoring system includes data collecting system and the sensor for pore water pressure being connected with data collecting system, for surveying The high-speed camera of trial record mud velocity, for record mud along the high-definition camera of the slideway downslide form and for point Analysis mud flowing is the PIV particle imaging instrument of particle operating status, and wherein sensor for pore water pressure is set to slideway upper surface and along cunning Dynamic inclined direction is disposed with several.
The bed course is sand or clay soil layer.
The Slide-way tilt angle regulating mechanism includes being fixed on motor on the model casing, described in motor is connected through steel wire rope The upper end of slideway.
The mudflow generating mechanism has small-sized hanging machine and the Slurry Storage case for storing mud, and small-sized hanging machine is consolidated Due in the model casing upper rail, small-sized hanging machine connects Slurry Storage case by steel wire rope, on the Slurry Storage case Equipped with the door for mud to be controlled to flow out.
The mud is mixing uniformly to form by kaolin, sand, carbon powder and water.
The model casing lateral marks are useful for the examination network of auxiliary computation of mud thickness when being flowed on the slideway.
The model casing is equipped with several osculums.
The test method of a kind of experimental rig using simulated sea bottom landslide, it is characterised in that step is as follows:
1st, the preparation of soil sample:
Kaolin, sand and water are put into according to the prior ratio of experiment in blender first and are stirred, is follow-up PIV The observation of particle imaging instrument is stirred together by being poured into blender by the carbon powder that carbon block is pulverized, and is stirred always before experiment starts, Mud is uniform before guarantee experiment.
2nd, slideway is arranged:The soil layers such as sandy soil or clay are filled, and pass through after sensor for pore water pressure is placed into slideway groove Motor adjusts angle needed for slideway to experiment.
3rd, the placement of mud reserve tank and water filling:
Mud reserve tank is placed by level by small-sized hanging machine, is extracted into the mud mixed liquor in blender by pump machine Until testing desired height in mud reserve tank.
It pours water rapidly in model casing, when the water surface reaches Slurry Storage case bottom, water speed reduces, and slow water filling is straight It can suitably accelerate water filling after being submerged to entire Slurry Storage case, stop pouring water when the water surface reaches experiment desired height, And slowly reduced Slurry Storage case by small-sized hanging machine 2, Slurry Storage case bottom is made to be in contact with the native face of slideway 13.
4th, monitoring system is arranged:Corresponding position arrangement high-speed camera, high-definition camera, PIV particles outside model casing It is simultaneously connected by imager with data collecting system, while by the sensor arranged in previous step and data collecting system phase Even.
5th, the door of Slurry Storage case is opened, discharges mud in case, data collecting system records each experimental data, tests Terminate, recovery models case is used for post-processing with experiment soil, obtained experimental data.
The beneficial effects of the invention are as follows:Middle slideway of the present invention can adjust angle of inclination by Slide-way tilt angle regulating mechanism;It is logical It crosses small-sized hanging machine and position of the Slurry Storage case relative to slideway is adjusted, so as to adjust mud preliminary examination impact velocity.The present invention The conditions such as the gradient, simulated mud, sliding slot bed course, mud preliminary examination impact velocity are come down so as to simulate different types of sea by change It comes down at bottom.Experimental rig of the present invention is easy to operate, and can record data automatically, not only increases scientific research efficiency, but also In order to study submarine landslide teaching test instrument is provided to the damage effect of pile foundation.
Description of the drawings
Fig. 1 is the structure diagram of embodiment.
Fig. 2 is the vertical view of embodiment.
Specific embodiment
As shown in Figure 1 and Figure 2, the present embodiment is a kind of experimental rig on simulated sea bottom landslide, has model casing 1, slideway 13rd, mudflow generating mechanism and mechanism for monitoring.
Model casing 1 is open-topped rectangular box body structure in the present embodiment, cloth along its length on the model casing 1 The side panel put is glass surface, passes through the situation inside glass surface observable model casing.It is equipped in model casing along model casing length The slideway 13 that direction is in tilted layout, 13 lower end of slideway are rotatably connected support plate 7 through shaft, and support plate 7 is fixed on model casing 1, 13 upper end of slideway is through Slide-way tilt angle regulating mechanism link model case 1.
This example middle slideway incidence regulating mechanism has motor 3, and motor 3 is fixed on model casing 1, and the motion end of motor 3 On be wound with steel wire rope, steel wire rope connects the upper end of slideway 13, can be rotated by motor 3 with sliding way 13 around its lower end shaft, from And realize 13 tilt adjustment of slideway.
The top on 13 top of slideway is equipped with mudflow generating mechanism, which has small-sized hanging machine 2 and be used for Store the Slurry Storage case 4 of mud.Its middle-size and small-size hanging machine 2 is fixed in 1 upper rail of model casing, and pass through wire rope suspensioning Slurry Storage case 4.Slurry Storage case 4 be a small-sized open-topped rectangular body Model slot, the direction of the Slurry Storage case The side wall of slideway inclined direction is openable door, for controlling the outflow of mud in Slurry Storage case.
In the present embodiment monitor system include high-speed camera 10, high-definition camera 11, sensor for pore water pressure 6, PIV particles into As instrument 9 and data collecting system 14.
Wherein sensor for pore water pressure 6 is set to slideway upper surface and several, slideway upper surface is disposed with along slideway inclined direction Bed course (filling sandy soil or clay etc. soil layers) is covered after sensor for pore water pressure 6 is arranged.
Sensor for pore water pressure 6 is connected with data collecting system 14, and data collecting system 14 is per automatic record at regular intervals Lower connected 6 reading of sensor for pore water pressure, for being recorded in 6 readings of sensor for pore water pressure under 12 continuous action of mud.
High-speed camera 10 is arranged in the side outside model casing 1, is respectively placed in exit and the slideway of mudflow storage bin 4 13 middle part and bottom arrangement, are connected with data collecting system 14 for the initial velocity of test record mud 12 and mud 12 Speed in the middle part of slideway and at bottom.
High-definition camera 11 is arranged in the survey face outside model casing 1, and is connected with data collecting system 14, for recording mud 12 outflow mudflow storage bins 4 of slurry along slideway 13 glide when form.
PIV particles are positioned over 1 side of model casing into instrument 9, by being analyzed and processed to image, are flowed for analyzing mud 12 The motion state of particle when dynamic.
The present embodiment is respectively equipped with two osculums at the middle part of two end side surface of model casing length direction and bottom.Model casing Mineral wool be marked with examination network for assisting computation of mud thickness when being flowed on the slideway, each grid is The grid of 1cm*1cm.
Submarine landslide analogue experiment method in the present embodiment, includes the following steps:
1st, the preparation of soil sample:
Kaolin, sand and water are put into according to the prior ratio of experiment in blender first and are stirred, is follow-up PIV The observation of particle imaging instrument 9 is stirred together by being poured into blender by the carbon powder that carbon block is pulverized, and is stirred always before experiment starts It mixes, mud is uniform before guarantee experiment.
2nd, slideway is arranged:The soil layers such as sandy soil or clay are filled, and lead to after sensor for pore water pressure 6 is placed into 13 groove of slideway It crosses motor 3 and adjusts angle needed for slideway 13 to experiment.
3rd, the placement of mud reserve tank and water filling:
Mud reserve tank 4 is placed by level by small-sized hanging machine 2, is taken out the mud mixed liquor in blender by pump machine Into mud reserve tank 4 until testing desired height.
It pours water rapidly in model casing 1, when the water surface reaches Slurry Storage 4 bottom of case, water speed reduces, slow water filling It can suitably accelerate water filling until entire Slurry Storage case 4 is submerged, stop filling when the water surface reaches experiment desired height Water, and slowly reduced Slurry Storage case 4 by small-sized hanging machine 2,4 bottom of Slurry Storage case is made to connect with the native face of slideway 13 It touches.
4th, monitoring system is arranged:Corresponding position arrangement high-speed camera 10, high-definition camera 11, PIV outside model casing It is simultaneously connected by particle imaging instrument 9 with data collecting system 14, while the sensor arranged in previous step and data are acquired System 14 is connected.
5th, the door of Slurry Storage case 4 is opened, discharges mud 12 in case, data collecting system 14 records experiment number every time According to experiment terminates, and recovery models case 1 is used for post-processing with experiment soil, obtained experimental data.

Claims (15)

1. a kind of experimental rig on simulated sea bottom landslide, it is characterised in that:Have with model casing (1), on model casing (1) and be convenient for The glass surface of observing and nursing case (1) inner case, the model casing is interior to be equipped with the slideway (13) being in tilted layout, and slideway (13) lower end can Support plate (7) is rotatablely connected, support plate (7) is fixed on model casing (1), and slideway (13) upper end is through Slide-way tilt angle regulating mechanism Link model case (1), slideway (13) upper surface covering bed course (5), the top on slideway (13) top are equipped with to discharge mud The mudflow generating mechanism of (12) is starched, corresponding slideway (13) sets the monitoring machine for monitoring mud (12) state on slideway (13) Structure.
2. the experimental rig on simulated sea bottom landslide according to claim 1, it is characterised in that:The monitoring system includes number According to acquisition system (14) and the sensor for pore water pressure (6) being connected with data collecting system (14), for test record mud (12) The high-speed camera (10) of speed, for record mud (12) along the high-definition camera (11) of the slideway (13) downslide form and For analyzing the PIV particle imagings instrument (9) that mud (12) flowing is particle operating status, wherein sensor for pore water pressure (6) is set to It slideway (13) upper surface and is disposed with along slideway (13) inclined direction several.
3. the experimental rig on simulated sea bottom landslide according to claim 2, it is characterised in that:The high-speed camera (10) The outlet of the mudflow (12) generating mechanism, the middle part of the slideway (13) and bottom setting are corresponded to respectively.
4. the experimental rig on simulated sea bottom landslide according to claim 1, it is characterised in that:The bed course (5) is sand Or clay soil layer.
5. the experimental rig on simulated sea bottom landslide according to claim 1 or 2, it is characterised in that:The Slide-way tilt angle tune Section mechanism includes the motor (3) being fixed on the model casing (1), and motor (3) connects the upper of the slideway (13) through steel wire rope End.
6. the experimental rig on simulated sea bottom landslide according to claim 1 or 2, it is characterised in that:Machine occurs for the mudflow Structure has small-sized hanging machine (2) and the Slurry Storage case (4) for storing mud, and small-sized hanging machine (2) is fixed on the model In case (1) upper rail, small-sized hanging machine (2) connects Slurry Storage case (4) by steel wire rope, on the Slurry Storage case (4) Equipped with the door for mud to be controlled to flow out.
7. the experimental rig on simulated sea bottom landslide according to claim 6, it is characterised in that:The mud by kaolin, Sand, carbon powder and water are mixing uniformly to form.
8. the experimental rig on simulated sea bottom landslide according to claim 1, it is characterised in that:Model casing (1) side Indicate the examination network for assisting computation of mud thickness when being flowed on the slideway (13).
9. the experimental rig on simulated sea bottom landslide according to claim 1, it is characterised in that:It is set on the model casing (1) There are several osculums (8).
10. a kind of test method for the experimental rig that simulated sea bottom using described in claim 1~9 comes down, it is characterised in that Step is as follows:
10.1, the preparation of soil sample:
Kaolin, sand and water are put into according to the prior ratio of experiment in blender first and are stirred, is follow-up PIV particles The observation of imager (9), is stirred together by being poured into blender by the carbon powder that carbon block is pulverized, and is stirred always before experiment starts, Mud is uniform before guarantee experiment.
10.2nd, slideway is arranged:Sensor for pore water pressure (6) is placed into slideway (13) groove and fills the soil layers such as sandy soil or clay afterwards, And pass through motor (3) and adjust angle needed for slideway (13) to experiment.
10.3rd, the placement of mud reserve tank and water filling:
Mud mud reserve tank (4) placed by small-sized hanging machine (2) it is horizontal, by pump machine by the mud mixed liquor in blender It is extracted into mud mud reserve tank (4) until testing desired height.
It pours water rapidly in model casing (1), when the water surface reaches mud reserve tank (4) bottom, water speed reduces, slow water filling It can suitably accelerate water filling until entire mud reserve tank (4) is submerged, stop when the water surface reaches experiment desired height It pours water, and is slowly reduced mud reserve tank (4) by small-sized hanging machine (2), make mud reserve tank (4) bottom and slideway (13) Native face is in contact.
10.4th, monitoring system is arranged:Outside model casing corresponding position arrangement high-speed camera (10), high-definition camera (11), It is simultaneously connected by PIV particle imagings instrument (9) with data collecting system (14), while by the sensor arranged in previous step and number It is connected according to acquisition system (14).
10.5th, the door of mud reserve tank (4) is opened, discharges mud in case (12), data collecting system (14) record is real every time Data are tested, experiment terminates, and recovery models case (1) is used for post-processing with experiment soil, obtained experimental data.
CN201810027064.9A 2018-01-11 2018-01-11 The experimental rig and its test method on simulated sea bottom landslide Pending CN108254504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810027064.9A CN108254504A (en) 2018-01-11 2018-01-11 The experimental rig and its test method on simulated sea bottom landslide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810027064.9A CN108254504A (en) 2018-01-11 2018-01-11 The experimental rig and its test method on simulated sea bottom landslide

Publications (1)

Publication Number Publication Date
CN108254504A true CN108254504A (en) 2018-07-06

Family

ID=62726234

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810027064.9A Pending CN108254504A (en) 2018-01-11 2018-01-11 The experimental rig and its test method on simulated sea bottom landslide

Country Status (1)

Country Link
CN (1) CN108254504A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109386283A (en) * 2018-09-21 2019-02-26 北京大学 A kind of experimental provision causing submarine landslide suitable for simulating combustible ice exploitation
CN110441028A (en) * 2019-07-12 2019-11-12 中国电建集团华东勘测设计研究院有限公司 The experimental provision on landslide and impact caused by a kind of sand liquefaction of analog seabed
CN110966951A (en) * 2019-10-17 2020-04-07 中国电建集团华东勘测设计研究院有限公司 Testing device and testing method for simulating submarine landslide impact structure
CN111076893A (en) * 2020-01-09 2020-04-28 中国电建集团华东勘测设计研究院有限公司 Submarine landslide physical model test device and working method
CN111157699A (en) * 2019-12-30 2020-05-15 浙江大学 Indoor test-based submarine landslide evaluation method
CN111351899A (en) * 2020-03-31 2020-06-30 山东大学 Monitoring system and method for offshore submarine landslide physical model test
CN110966951B (en) * 2019-10-17 2021-11-05 中国电建集团华东勘测设计研究院有限公司 Testing device and testing method for simulating submarine landslide impact structure

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109386283A (en) * 2018-09-21 2019-02-26 北京大学 A kind of experimental provision causing submarine landslide suitable for simulating combustible ice exploitation
CN109386283B (en) * 2018-09-21 2021-07-09 北京大学 Experimental device suitable for simulating bottom landslide caused by combustible ice exploitation
CN110441028A (en) * 2019-07-12 2019-11-12 中国电建集团华东勘测设计研究院有限公司 The experimental provision on landslide and impact caused by a kind of sand liquefaction of analog seabed
CN110966951A (en) * 2019-10-17 2020-04-07 中国电建集团华东勘测设计研究院有限公司 Testing device and testing method for simulating submarine landslide impact structure
CN110966951B (en) * 2019-10-17 2021-11-05 中国电建集团华东勘测设计研究院有限公司 Testing device and testing method for simulating submarine landslide impact structure
CN111157699A (en) * 2019-12-30 2020-05-15 浙江大学 Indoor test-based submarine landslide evaluation method
CN111076893A (en) * 2020-01-09 2020-04-28 中国电建集团华东勘测设计研究院有限公司 Submarine landslide physical model test device and working method
CN111351899A (en) * 2020-03-31 2020-06-30 山东大学 Monitoring system and method for offshore submarine landslide physical model test

Similar Documents

Publication Publication Date Title
CN108254504A (en) The experimental rig and its test method on simulated sea bottom landslide
CN105301200B (en) Testing apparatus for characteristics of sand production during mining of natural gas hydrate
CN107328552B (en) A kind of seabed interface layer dynamic change in-situ observation system
CN102323197B (en) Device for measuring soil water movement and soil structure and method
CN107045054A (en) Husky behavior and the experimental provision and method of the relation of porous media radial direction deformation are produced in a kind of researching natural gas hydrate recovery process
CN104977149B (en) The husky transported simulation test unit of a kind of water and method
CN105178927B (en) A kind of displacement simulation experimental provision and system
CN207764186U (en) The experimental rig on simulated sea bottom landslide
CN106437698A (en) Underwater platform for exploration sampling or in-situ test and using method thereof
CN108195723A (en) A kind of osmotic grouting pilot system and method for reinforcing loose gravelly soil
CN106932170A (en) The test method and device of hydrate layer output fine sand migration rule in gravel layer
CN106406141A (en) Model test system and method for seabed seismic wave detection
CN103938576A (en) Tailing pond dam model test and dynamics simulation test device
CN110454146A (en) The device and method to shake out in horizontal well with sand control in evaluation hydrate recovery process
Maghsoudloo et al. Experimental investigation of pore pressure and acceleration development in static liquefaction induced failures in submerged slopes
CN203821296U (en) Model test device for cohesiveless soil piping failure development process
CN104501747B (en) A kind of three-dimensional similar materials simulated test displacement measuring device and its measuring method
CN107656033B (en) Natural gas hydrate fluidization decomposition and separation experimental device and experimental method
CN109187285A (en) Seepage through soil mass experimental rig
CN206339470U (en) Debris flow dam dam foundation soil horizontal infiltration experimental rig
CN108226398A (en) A kind of simulation pipeline and hydrate generation experimental provision and method in multiple branched pipes
CN108035700A (en) Ocean gas hydrate producing well sand-carrying production rule analogue system and method
De Groot et al. Large scale sand liquefaction flow slide tests revisited
CN107102380A (en) A kind of model assay systems detected for submarine earthquake ripple method and method
CN104458553B (en) Test device and method for studying erosion damage under pipe bag dam joint breakage condition

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