CN106840600B - Simulate the annular water tank device of sediment resuspension under sea bed seepage effect - Google Patents

Simulate the annular water tank device of sediment resuspension under sea bed seepage effect Download PDF

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Publication number
CN106840600B
CN106840600B CN201710061388.XA CN201710061388A CN106840600B CN 106840600 B CN106840600 B CN 106840600B CN 201710061388 A CN201710061388 A CN 201710061388A CN 106840600 B CN106840600 B CN 106840600B
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China
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annular water
soil
water flow
original
flow
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CN201710061388.XA
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Chinese (zh)
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CN106840600A (en
Inventor
张少同
贾永刚
张雅淇
刘晓磊
熊传芳
沈泽中
单红仙
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中国海洋大学
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M10/00Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels

Abstract

The annular water tank device and method of sediment resuspension under sea bed seepage effect is simulated, the device mainly includes annular water flow groove, soil box, original-pack soil sample test trough, current generating system, osmotic system and mounting system.The annular water flow groove, soil box and original-pack soil sample test trough form by the inwall, outer wall and bottom plate of acrylic material, and soil box under original-pack soil sample test trough with being embedded among water flow grooves;Current generating system is made up of generator with making flow roll wheel;Osmotic system is made up of the graduated cylinder of acrylic material, aqueduct and hydraulic balance sandbag;Mounting system is made up of stainless steel structure and universal rolling wheel.The device combination foreword problem in science (the settling flux mechanism and qualitative assessment of slity soil Seabed sediments) and design, can be not only used for sample in situ engineering properties test, also available for scientific research:The settling flux feature of deposit under the different degrees of sea bed inside seepage effect of qualitative assessment.

Description

Simulate the annular water tank device of sediment resuspension under sea bed seepage effect

Technical field

The present invention relates to a kind of annular water tank device for simulating sediment resuspension under sea bed seepage effect, belong to ocean work Engineering properties test and research field of the journey geology with sediment dynamics field.

Background technology

Erosion settling flux process of the Seabed sediments under hydrodynamism is always marine engineering geology and Sediment dynamics Learn the key issue in research field.Research shows:The critical erosion intensity of deposit can be influenceed by sea bed seepage effect, Even when seepage flow intensity is sufficiently large, sea bed is caused to liquefy, influence of the sea bed seepage effect to sediment resuspension can not be ignored. Serious submarine erosion can cause the exposure of umbilical, hanging or even fracture, trigger the engineering accidents such as oil spilling, blowout, cause huge Economic loss.Therefore, the problems such as the mechanism of submarine erosion, qualitative assessment and prophylactico-therapeutic measures with being constantly subjected to ocean engineering Matter scholar and the concern of sedimentologist.

Annular water tank is one of common tool during ocean is studied with hydro science.Invention related to annular water tank at present 3 classes are broadly divided into utility model patent:(1) it is used for the demarcation of Flow speed measurer device, such as:Chinese People's Liberation Army's science and engineering is big Learn " annular water tank for being used for portable Flow Velocity Meter calibrating " (201620556240.4) of design;(2) it is used for hydrodynamics Simulation and research, such as:Tongji University devises " using the device of annular water tank simulation natural river course flow characteristics " (201310120205.9);Beijing Environmental Protection Science Inst., which devises, " utilizes annular water tank simulation natural river course current The device of characteristic " (201520155123.2);(3) it is used for the scientific research in terms of fluid and deposit interaction, such as:On Extra large university devises " a kind of annular water tank device for simulating pollutants in sediments resuspension release " (201410057326.8);Shanghai Estuary coast research establishment devises " a kind of all automatic measurement and Control experiment annular water tank " (201320475851.2);Hohai University devises the " method of re-suspension of underwater under simulated wave disturbance in annular water tank And device " (200710025671.3) and the outstanding husky and bed material absorption pollutant device of annular water tank simulation (201320818449.X);Tianjin Research Institute for Water Transport Engineering of Tianjin Water Transport Engineering Survey and Design Inst. devises " annular water tank for being used for the experiment of silt Settling in moving water " (201520171404.7).These are used for the annular water tank of scientific research all For specific problem in science, there is the design of uniqueness.At present for the exploration of the problem in science, rarely have fine quantification to grind Study carefully.The design of the structure and device of this method is then it is intended that the progressive of the research work provides a kind of means.The present invention is similarly Belong to a kind of and be directed to specific problem in science -- sediment resuspension process under sea bed seepage effect -- and a kind of ring specially designed Shape water tank device, because the problem in science that apparatus of the present invention are directed to is with respect to forward position, directly related patent is not yet seen at present.

The content of the invention

Present invention aims at design one kind can either test the critical erosion performance of deposit, can study varying strength again Seepage effect under sediment resuspension feature device --- simulation sea bed seepage effect under sediment resuspension annular water Slot device, to simulate the sediment resuspension process inside sea bed under seepage effect indoors.

Simulate the annular water tank device of sediment resuspension under sea bed seepage effect, it is characterised in that including steel structure support With the annular water flow groove with current generating system, described current generating system is made up of motor with making flow roll wheel, can be in annular water flow The current of friction speed are manufactured in groove;Multiple soil boxs and an original-pack soil sample test trough, wherein soil box are embedded with annular water flow groove For filling the deposit of the geotechnical properties such as different-grain diameter, moisture content, to simulate natural sea bed, original-pack soil sample test trough is used to fill out Undisturbed sediment sample is filled, carries out the geotechnical properties test job of undisturbed sediment;, can be by portion when current are flowed through above two grooves Divide sedimentary particle to start, its settling flux is entered overlying water, and transported with current;Outstanding sand is further fixed in annular water flow groove Concentration sensor and flow rate of water flow sensor, the sustainable suspension concentration and change in flow recorded in water body;In the soil box also Equipped with hydraulic balance sandbag;Seepage flow graduated cylinder is looped around center by annular water flow groove, and seepage flow graduated cylinder is used for the water for filling different height Head, and each soil box and original-pack soil sample are communicated to by aqueduct and test trench bottom, water pressure is applied to soil box/original-pack Soil sample tests trench bottom, into hydraulic balance sandbag, and then soil box/original-pack soil sample test trench bottom is acted on, to apply seepage flow Gradient, band valve on the aqueduct.

Described flow roll wheel of making makes flow roll wheel for cylindrical type laminated board type, can be in the more efficiently groove of annular water flow again Manufacture the current of friction speed.

Described annular water flow groove is made by transparent acrylic material, can be carried out the outstanding husky phenomenon occurred in experiment straight The observation of sight, take pictures or record a video.

Soil box among described annular water flow groove at least embedded with two same designs, parallel laboratory test (example can carried out As seepage failure is tested), improve conventional efficient.

The described suspension concentration sensor being fixed among tank and flow rate of water flow sensor, both are used in combination available In the critical erosion flow velocity/shear stress of deposit, the judgement and reckoning of settling flux/erosion factor.

The described seepage flow graduated cylinder for being fixed on annular water tank center is provided with scale.Applied according to scale value different size of Head;And water pressure is applied to soil box/original-pack soil sample under the traction of aqueduct and tests trench bottom;Described hydraulic balance is husky Bag, it is ensured that water pressure enters the horizontal proliferation in sand bed after soil box, then relatively evenly acts on whole native bed bottom Face, the generation for preventing local penetration from destroying.

Described steel structure support bottom is provided with universal rolling wheel.

Current different in flow rate can be manufactured by generator and swing roller in annular water tank, flow action is in soil box On native bed, cause the settling flux of surface deposit;Head among annular water tank applies graduated cylinder can be by different size of head Difference is carried in native bed bottom, causes seepage flow inside sea bed;Coupling with vertical seepage flow inside sea bed is washed away by superficial water flow horizontal Matched moulds is intended, and can explore influence of the different degrees of sea bed seepage flow to sediment resuspension.In order to ensure bottom seepage flow gradient Uniformity, apparatus of the present invention have added sandbag in soil box bottom, and layer of sand therein, which is laid, can make the water pressure for entering soil box very Reach planar diffusion well, so that the uniformity of seepage flow gradient.The present apparatus is very convenient, and whole device can be in support Moved freely under auxiliary.The present apparatus can freely control variable, in depth explore the problem in science.

Brief description of the drawings

Fig. 1 is the stereogram of the present invention.

Fig. 2 is the stereogram of the annular water flow groove of the present invention.

Fig. 3 is the front view of the present invention.

Fig. 4 is the side view of the present invention.

Fig. 5 is the top view of the present invention.

Wherein, 1, motor, 2, make flow roll wheel, 3, annular water flow groove, 4, soil box, 5, original-pack soil sample test trough, 6, outstanding husky dense Spend sensor, 7, flow rate of water flow sensor, 8, seepage flow graduated cylinder, 9, aqueduct, 10, hydraulic balance sandbag, 11, steel structure support, 12nd, universal rolling wheel.

Embodiment

Such as Fig. 1-5, the annular water tank device of sediment resuspension under sea bed seepage effect is simulated, it is characterised in that including steel Structure stand 11 and the annular water flow groove 3 with current generating system, described current generating system are made up of motor 1 with making flow roll wheel 2, energy Enough current that friction speed is manufactured in annular water flow groove 3;Multiple soil boxs 4 and an original-pack soil sample are embedded with annular water flow groove 3 In test trough, wherein soil box 4, the deposit of the geotechnical properties such as different-grain diameter, moisture content can be filled, to simulate natural sea bed, In original-pack soil sample test trough 5, undisturbed sediment sample can be filled, carries out the geotechnical properties test job of undisturbed sediment;When When current are flowed through above two grooves, Parts of deposits particle can be started, its settling flux is entered overlying water, and it is defeated with current Fortune;Suspension concentration sensor 6 and flow rate of water flow sensor 7 are further fixed in annular water flow groove 3, it is sustainable to record hanging in water body Husky concentration and change in flow;Hydraulic balance sandbag 10 is also equipped with the soil box 4;Seepage flow graduated cylinder 8 is looped around by annular water flow groove 3 Center, seepage flow graduated cylinder 8 is used for the head for filling different height, and is communicated to each soil box 4 and original-pack soil sample by aqueduct 9 The bottom of test trough 5, water pressure is applied to the original-pack bottom of soil sample test trough 5 of soil box 4/, into hydraulic balance sandbag 10, and then The original-pack bottom of soil sample test trough 5 of soil box 4/ is acted on, to apply seepage flow gradient, band valve on the aqueduct 9.

Described flow roll wheel 2 of making makes flow roll wheel 2 for cylindrical type laminated board type, can be in more efficiently annular water flow groove again The current of friction speed are manufactured in 3.

Such as Fig. 1, described annular water flow groove 3 is made by transparent acrylic material, can be outstanding husky existing by what is occurred in experiment As intuitively being observed, being taken pictures or being recorded a video.

Such as Fig. 1,2,5, the soil box 4 among described annular water flow groove 3 at least embedded with two same designs, can carry out Parallel laboratory test (such as seepage failure experiment), improve conventional efficient.

Such as Fig. 4, the described suspension concentration sensor 6 being fixed among tank and flow rate of water flow sensor 7, both combine Using available for the critical erosion flow velocity/shear stress of deposit, the judgement and reckoning of settling flux/erosion factor.

The described seepage flow graduated cylinder 8 for being fixed on annular water tank center is provided with scale.Different size is applied according to scale value Head;And water pressure is applied to soil box/original-pack soil sample under the traction of aqueduct 9 and tests trench bottom;Described hydraulic pressure is put down Weigh sandbag 10, it is ensured that water pressure enters the horizontal proliferation in sand bed after soil box, then relatively evenly acts on whole Native bed bottom surface, the generation for preventing local penetration from destroying.

Such as Fig. 3,4, the described bottom of steel structure support 11 is provided with universal rolling wheel 12.

During use:

The first step:Hydraulic balance (10) sandbag is filled up into quartz sand, is positioned over soil box (4) and/or original-pack soil sample test trough (5) bottom;

Second step:Deposit is filled into soil box (4), and by suspension concentration sensor (6) and flow rate of water flow sensor (7) it is fixed among annular water flow groove (3), sets acquisition parameter, the external computer of instrument, real time inspection and during storing experiment The data collected.

3rd step:Add water into annular water tank, until not having the instrument probe in water-carrying groove;

4th step:To seepage flow graduated cylinder (8) Zhong Jiashui, and adjust head height;

4th step:The valve on aqueduct (9) is opened, applies seepage flow gradient to soil box (4) bottom;

5th step:Open motor (1) and manufacture current different in flow rate tank (3) is inner, record every group of seepage flow gradient and water Flow the loading period of flow velocity;

6th step:Experiment is finished, and dismantles instrument, reads total data, and interception experiment segment data is analyzed.

Note:The embodiment and soil box (4) of original-pack soil sample test trough (5) are essentially identical, and difference is in (5) The columnar samples that seabed original position is fetched can be directly placed into, are not required to indoor artificial manufacture sea bed, remaining step is identical.

Claims (6)

1. simulate the annular water tank device of sediment resuspension under sea bed seepage effect, it is characterised in that including steel structure support (11) the annular water flow groove (3) and with current generating system, described current generating system are made up of motor (1) with making flow roll wheel (2), energy The current of enough manufacture friction speeds in annular water flow groove (3);Embedded with multiple soil boxs (4) and an original in annular water flow groove (3) Soil sample test trough is filled, wherein soil box (4) is used for the deposit for filling the geotechnical properties such as different-grain diameter, moisture content, natural to simulate Sea bed, original-pack soil sample test trough (5) are used to fill undisturbed sediment sample, carry out the geotechnical properties test work of undisturbed sediment Make;Suspension concentration sensor (6) and flow rate of water flow sensor (7) are further fixed in annular water flow groove (3);In the soil box (4) It is also equipped with hydraulic balance sandbag (10);Seepage flow graduated cylinder (8) is looped around center by annular water flow groove (3), and seepage flow graduated cylinder (8) is used to fill out The head of different height is filled, and each soil box (4) and original-pack soil sample test trough (5) bottom are communicated to by aqueduct (9), with Water pressure is applied to soil box (4) and original-pack soil sample test trough (5) bottom, into hydraulic balance sandbag (10), and then acted on Soil box (4) and original-pack soil sample test trough (5) bottom, to apply seepage flow gradient, band valve on the aqueduct (9).
2. device as claimed in claim 1, it is characterised in that described flow roll wheel (2) of making makes flow roll for cylindrical type laminated board type Take turns (2).
3. device as claimed in claim 1, it is characterised in that described annular water flow groove (3) is by transparent acrylic material system Make.
4. device as claimed in claim 1, it is characterised in that at least identical embedded with two among described annular water flow groove (3) The soil box (4) of design.
5. device as claimed in claim 1, it is characterised in that described is fixed on the seepage flow graduated cylinder (8) in annular water tank center Provided with scale.
6. device as claimed in claim 1, it is characterised in that described steel structure support (11) bottom is provided with universal rolling wheel (12)。
CN201710061388.XA 2017-01-25 2017-01-25 Simulate the annular water tank device of sediment resuspension under sea bed seepage effect CN106840600B (en)

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CN107702883B (en) * 2017-08-18 2019-07-02 水利部交通运输部国家能源局南京水利科学研究院 A kind of the complex flowfield realization device and method of aquatile ecology hydraulic experiment
CN108332901A (en) * 2017-12-15 2018-07-27 国家海洋局第海洋研究所 Deposit pore pressure response analogy method under wave action
CN109443691B (en) * 2018-11-10 2020-05-22 中国海洋大学 Experimental device for wave-induced seepage induces seabed internal sediment erosion
CN109253968B (en) * 2018-11-10 2020-05-22 中国海洋大学 In-situ deposit columnar sample layering erosion resistance measuring device and method
CN109490084B (en) * 2018-11-29 2019-12-06 中国海洋大学 In-situ test device and method for releasing amount of endogenous pollutants in marine sediments under simulated wave action
CN110375920A (en) * 2019-06-21 2019-10-25 中国海洋大学 Bottom sediment transports in-situ testing device and its application method

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CN2690998Y (en) * 2004-03-16 2005-04-06 中国科学院南京地理与湖泊研究所 Rotary propeller type deposit sediment re-floating generator
CN203912946U (en) * 2014-06-19 2014-11-05 中国海洋大学 A kind of small-sized marine life hangs husky simulation test device
CN104502540A (en) * 2014-12-26 2015-04-08 河海大学 Shore/beach sediment release simulation experiment device and shore/beach sediment simulation experiment method

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Publication number Priority date Publication date Assignee Title
CN2690998Y (en) * 2004-03-16 2005-04-06 中国科学院南京地理与湖泊研究所 Rotary propeller type deposit sediment re-floating generator
CN203912946U (en) * 2014-06-19 2014-11-05 中国海洋大学 A kind of small-sized marine life hangs husky simulation test device
CN104502540A (en) * 2014-12-26 2015-04-08 河海大学 Shore/beach sediment release simulation experiment device and shore/beach sediment simulation experiment method

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