CN201378166Y - Test device for studying permeable destruction phenomenon - Google Patents
Test device for studying permeable destruction phenomenon Download PDFInfo
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- CN201378166Y CN201378166Y CN200920042002U CN200920042002U CN201378166Y CN 201378166 Y CN201378166 Y CN 201378166Y CN 200920042002 U CN200920042002 U CN 200920042002U CN 200920042002 U CN200920042002 U CN 200920042002U CN 201378166 Y CN201378166 Y CN 201378166Y
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Abstract
The utility model relates to a test device for studying permeable destruction phenomenon. A longitudinal displacement drive controlling device is arranged for adjusting the vertical displacement of an upstream water storage tank to obtain a hydraulic gradient exerted on a soil sample to cause permeable destruction; a water pressure measurement device used for measuring the soil pore water pressure and a soil pressure measurement device used for measuring the soil pressure are arranged on the inner surface of a soil containing box holding the soil sample; a vertical displacing measurement device used for measuring the vertical displacement of soil is mounted on a movable cover plate capable of longitudinally moving and arranged at the top part of the soil containing box; and at the same time, a flowmeter used for measuring the seepage is mounted in the water seepage downstream of the soil containing box. Therefore, by adopting the test device, four characterization curves, namely hydraulic gradient-time, pore water pressure-time, soil pressure-time and seepage-hydraulic gradient are obtained; the occurring and the developing process of the permeable destruction phenomenon is more comprehensively simulated; and the further development of hydraulic engineering is facilitated.
Description
Technical field
The utility model relates to a kind of experimental provision that is used to study phenomenon of permeable damage.
Background technology
The seepage failure problem that seepage flow causes mainly contains two big classes: the one, because the effect of seepage force produces the loss of soil body particle or the local soil body and moves, cause soil deformation even unstability; The 2nd, because seepage effect changes water pressure or buoyancy, cause the soil body or works unstability; The former mainly shows as stream soil and piping, and the latter then shows as the whole unstabilitys of structures such as bank slope slip or retaining wall.
Studies show that at present piping is that fine particle progressively moves under the infiltration flow action, so that the process that runs off in the hole that coarse particle forms.Be accompanied by fine grain continuously outflowing, pore water pressure in the piping generation evolution in the soil body, soil pressure, land movement and ooze out flow and all change taking place, therefore, the movement of particles by observation soil body sample each several part and the situation of change of each parameter can be understood the generation and the evolution of piping better, but, in the prior art, the method of critical hydraulic gradient was studied the generation and the development of piping when general employing measured the piping generation, and as noted earlier, failure by piping generally has individual time evolution, be a kind of destruction of progressive character, be that piping is a dynamic process, in the evolution of piping, along with the loss of fine particle, the soil body will present heterogeneous body, character such as anisotropy, simultaneously, flow velocity in the soil body and pore water pressure also can redistribute, therefore, use traditional piping test method of measuring critical hydraulic gradient, can not survey the variation of all parameters that relate in the piping evolution all sidedly.
In addition, known indoor piping experimental observation instrument is generally narrow shape groove at present, size is less, and general observational record data with the naked eye, so, this testing equipment obviously has the following disadvantages: the generation evolution of (1) piping is three-dimensional, and the piping process intended by narrow shape channel mould and actual conditions are come in and gone out very big; (2) laboratory experiment of piping is subjected to the influence of size effect very big, and size is more little, and size effect is obvious more, and the error that causes is also big more; (3) most this type of experimental apparatus can not be measured the vertical displacement under the different vertical load in the piping evolution at present, and the parameter kind that energy measurement obtains in the experiment is also less, is difficult to measure all sidedly the hydraulic parameters of the interior each several part of the soil body in the piping generation evolution and the variation of structural parameters; (4) data are utilized the method for manual record, and precision is not high.
The utility model content
The utility model is at the deficiencies in the prior art, a kind of test unit of studying phenomenon of permeable damage is provided, it is by adopting soil body storage case splendid attire soil body sample, and the displacement drive control device that drives upstream water storage tank generation perpendicular displacement is set changes head difference between upstream water storage tank and the inlet water tank to obtain the default hydraulic gradient that phenomenon of permeable damage takes place, simultaneously, water pressure measuring device and soil pressure measurement mechanism pore water pressure and the soil pressure with corresponding site in the phenomenon of permeable damage evolution of measuring each head difference correspondence respectively is set, and soil body sample applied the normal load that different available loading measurement mechanisms are measured, vertical displacement under the vertical displacement measurement mechanism measurement different vertical load is set, and these data are analyzed the back export hydraulic gradient-time, pore water pressure-time, soil pressure-time and ooze out four of flow-hydraulic gradients and characterize curve, thus characterize the generation evolution of whole phenomenon of permeable damage comparatively all sidedly.
For realizing above-mentioned technical purpose, the utility model will adopt following technical scheme:
A kind of test unit of studying phenomenon of permeable damage, comprise the upstream water storage tank, be used to hold the soil body storage case and the downstream water storage tank of soil body sample, the input end of described upstream water storage tank connects the displacement drive control device that drives its generation perpendicular displacement, be connected with inlet water tank between described upstream water storage tank and the soil body storage case, and this inlet water tank is provided with the head inditron that is used to measure head difference between upstream water storage tank and the inlet water tank, then be provided for measuring the flowmeter that oozes out flow between soil body storage case and the downstream water storage tank, the removable cover that the setting of described soil body storage case top board can vertically move, and interlock is provided with the longitudinal load output unit on this removable cover, and the output terminal of longitudinal load output unit is provided for measuring the loading measurement mechanism of this longitudinal load vertical load that output unit is exported, then be provided for measuring the vertical displacement measurement mechanism of soil body sample vertical displacement on the removable cover, in addition, water pressure measuring device that is respectively applied for measurement phenomenon of permeable damage evolution mesoporosity water pressure and the soil pressure measurement mechanism that is used to measure soil pressure are housed on the described soil body storage case.
Described loading measurement mechanism, water pressure measuring device, vertical displacement measurement mechanism and soil pressure measurement mechanism are respectively load sensor, water pressure sensor, vertical displacement sensor and soil pressure sensor.
A side panel of described soil body storage case adopts transparent material to be made, and the outside surface of this transparent panel is provided with the image collecting device that is used to take soil body sample particle trajectories.
Described image collecting device comprises high speed microimaging head.
Described head inditron, water pressure sensing are clamored, the output terminal of soil pressure sensor, load sensor, vertical displacement sensor and high speed microimaging head is connected with data collector respectively, the output terminal of this data collector then with an analyzing and processing head difference, water pressure, soil pressure, longitudinal load, vertical displacement and these data of soil body sample particle trajectories, with output hydraulic gradient-time, pore water pressure-time, soil pressure-time and ooze out four computer data processing units that characterize curve of flow-hydraulic gradient and be connected.
Described displacement drive control device comprises windlass and the hoisting gear that windlass is connected with the upstream water storage tank.
The Pressure Actuated Device that described longitudinal load output unit comprises lifting jack and drives this lifting jack motion.
Also comprise water circle device, this water circle device comprises the ebullator that is arranged in the water storage tank of downstream, and the circulation delivery side of pump is connected with the upstream water storage tank, and the connecting pipe between ebullator output terminal and the upstream water storage tank is a telescopic water pipe, and then this telescopic water pipe can be made corresponding variation according to the change of upstream water storage tank length travel.
According to above technical scheme, can realize following beneficial effect:
1. the utility model is provided with soil body storage case with splendid attire soil body sample, thereby reduced the size effect because of adopting narrow shape groove research experiment to produce in the prior art to a certain extent, in addition, the removable cover of length travel can take place in the utility model in the top board setting of soil body storage case, and this removable cover and longitudinal load output unit are connected, described removable cover is provided with the vertical displacement measurement mechanism simultaneously, then the utility model can provide soil body sample in the phenomenon of permeable damage evolution to be subjected to vertical displacement under the different vertical load, have again, the utility model is provided with water pressure measuring device and soil pressure measurement mechanism on soil body storage case, and be provided with the displacement drive control device to change the head difference between upstream water storage tank and the inlet water tank, thereby can obtain soil body pore water pressure and soil pressure under default hydraulic gradient and each head difference, therefore, after the above-mentioned data that collect are carried out analyzing and processing, can draw out hydraulic gradient-time, pore water pressure-time, soil pressure-time and the waterpower or the structural parameters change curves that ooze out the evolution of four signs of flow-hydraulic gradient phenomenon of permeable damage, the critical gradient that can only obtain the phenomenon of permeable damage evolution with prior art is compared, adopt the utility model to carry out the experimental study of phenomenon of permeable damage evolution, can simulate whole phenomenon of permeable damage evolution comparatively all sidedly.
2. the utility model adopts image collecting device to take soil body sample particle trajectories, thereby can obtain the movement locus of soil body sample particle, with hydraulic gradient-time, pore water pressure-time, soil pressure-time and ooze out four kinds of flow-hydraulic gradients and characterize curve and verify the whole phenomenon of permeable damage evolution of ground comprehensive simulated mutually.
3. used loading measurement mechanism, water pressure measuring device, vertical displacement measurement mechanism and the soil pressure measurement mechanism of the utility model is respectively load sensor, water pressure sensor, vertical displacement sensor and soil pressure sensor, and adopt data collector to collect the aforementioned means institute data of mensuration respectively automatically, therefore, compare with manual record in the prior art, the utility model is not only saved human cost largely, and guaranteed the record accuracy of data, avoid wrong generation from data source header, improved the precision that data obtain.
4. the utility model adopts the computer data process software that collected data are carried out analyzing and processing, saves human resources on the one hand, the mistake of avoiding the manual analysis processing procedure to take place on the other hand.
Description of drawings
Fig. 1 is the use process flow diagram of this test unit;
Fig. 2 is the structural representation of this test unit;
Fig. 3 is the hydraulic gradient-time changing curve figure in the operational process of the present invention;
Fig. 4 is the pore water pressure-time changing curve figure in the operational process of the present invention;
Fig. 5 is the soil pressure-time changing curve figure in the operational process of the present invention;
Fig. 6 is the change curve that oozes out flow-hydraulic gradient in the operational process of the present invention.
Embodiment
Explain the technical solution of the utility model below with reference to accompanying drawing.
As shown in Figure 1 and Figure 2, test unit described in the utility model, comprise upstream water storage tank 13, be used to hold the soil body storage case 1 and the downstream water storage tank 11 of soil body sample, the input end of described upstream water storage tank 13 connects the displacement drive control device that drives its generation perpendicular displacement, described displacement drive control device comprises windlass 31 and the hoisting gear that windlass 31 is connected with upstream water storage tank 13, and this hoisting gear is by a plurality of fixed pulleys 33 and cable wire that fixed pulley 33 is connected with windlass 31, upstream water storage tank 13 respectively; Be connected with inlet water tank 2 between described upstream water storage tank 13 and the soil body storage case 1, and this inlet water tank 2 is provided with the head inditron 5 that is used to measure head difference between upstream water storage tank 13 and the inlet water tank 2, then be provided for measuring the flowmeter 12 that oozes out flow between soil body storage case 1 and the downstream water storage tank 11, the range of this flowmeter 12 is 10L/min～40L/min, precision is not less than 0.1L/min, the removable cover 8 that described soil body storage case 1 top board setting can vertically move, and interlock is provided with the longitudinal load output unit on this removable cover 8, the Pressure Actuated Device that described longitudinal load output unit comprises lifting jack 7 and drives these lifting jack 7 motions, and the output terminal of longitudinal load output unit is provided for measuring the loading measurement mechanism 6 of this longitudinal load vertical load that output unit is exported, then be provided for measuring the vertical displacement measurement mechanism (not drawing among the figure) of soil body sample vertical displacement on the removable cover 8, in addition, be equipped with on described soil body storage case 1 internal face and be respectively applied for the water pressure measuring device of measuring phenomenon of permeable damage evolution mesoporosity water pressure and the soil pressure measurement mechanism that is used to measure soil pressure, and the front plate of this soil body storage case 1 adopts transparent material, form as organic glass, be used to observe the motion conditions of soil body sample, and image collecting device is set at this front plate outside surface, the distribution situation of constantly taking particle, the loss process of particle in the continuous recording piping process, gather the movement locus of soil body particle, realize the microcosmic Simulation of phenomenon of permeable damage evolution.
Described loading measurement mechanism 6, water pressure measuring device, vertical displacement measurement mechanism and soil pressure measurement mechanism are respectively load sensor, water pressure sensor, vertical displacement sensor and soil pressure sensor, the used water pressure sensor range of the utility model is 30KPa～50KPa, precision is not less than 0.2KPa, the soil pressure sensor range is 50KPa～70KPa, precision is not less than 0.5KPa, and described image collecting device comprises high speed microimaging head, this high speed microimaging head possesses following parameter: take resolution and be not less than 500 lines, 1/3 inch CCD camera lens, minimal illumination is not more than 0.5LUX, shooting speed is greater than 100 frame/seconds, and has macro function; And the data output end of aforementioned load sensor, water pressure sensor, vertical displacement sensor, soil pressure sensor and high speed microimaging head is connected with data collector 10, and the output terminal of this data collector 10 is then with an analyzing and processing head difference, water pressure, soil pressure, longitudinal load, vertical displacement and these data of soil body sample particle trajectories, be connected with output pore water pressure-hydraulic gradient, soil pressure-hydraulic gradient and the computer data processing unit that oozes out three change curves of flow-hydraulic gradient.
In addition, the utility model also comprises water circle device, this water circle device comprises the ebullator 42 that is arranged in the downstream water storage tank 11, and the output terminal of ebullator 42 is connected with upstream water storage tank 13 usefulness telescopic water pipes 5, when then upstream water storage tank 13 moves up and down along with the displacement drive control device, this telescopic water pipe 5 acts accordingly thereupon, guarantees that ebullator 42 can pump into the water in the downstream water storage tank 11 in the upstream water storage tank 13, realizes the circulation of current.
During use, soil body sample is packed into behind the sample storage case 1, removable cover 8 on the top cover, the reaction frame that will have lifting jack 7 and load sensor is adjusted to the position that is fit to loading, and it is fixing to regulate bolt 14 with frame, for preventing the lateral deformation of sample storage case 1, sample storage case 1 is held out against with puller bolt 15; 7 pairs of soil body samples of lifting jack apply certain vertical load then, start windlass 31 and regulate the height of upstream water storage tank 13, head height by head inditron 5 observation inlet water tanks 2, ooze out flow by flowmeter 12 observations, when upstream water storage tank 13 decline of water tables, start water circulating pump with the water suction upstream water storage tank 13 in the downstream water storage tank 11, realize recycling of water; The data that sensor records are carried out analyzing and processing by data collector 10 input computer data APUs 9, export pore water pressure-time, soil pressure-time and ooze out three kinds of change curves of flow-hydraulic gradient.
In addition, will contrast Fig. 3-6 below, illustrate that using the utility model research once simulates piping generation evolution.
As Fig. 3, it simulates the hydraulic gradient-time changing curve figure of piping generation evolution for the present invention, its each head difference all be at certain time intervals in, by control displacement driving control device generation perpendicular displacement, thereby make the perpendicular displacement of upstream water storage tank change, changed the head of inlet water tank, promptly changed the head difference between inlet water tank and the downstream water storage tank, obtain the required hydraulic gradient of piping generation evolution, the present invention imposes on the head difference of soil body sample with increase by the head that progressively improves inlet water tank.
As Fig. 4, its for use the utility model simulation piping generation evolution time-the pore water pressure change curve, as seen from the figure, the water pressure at water pressure sensor experiments of measuring sample diverse location place, at synchronization, the water pressure at diverse location place is variant, and along with the increase of pressurization head, the water pressure sensor numerical value in each site is also increasing.
As Fig. 5, its for use the utility model simulation piping generation evolution time-the soil pressure change curve, according to principle of effective stress, when the suffered total stress of the soil body is constant, the effective stress of the soil body reduces along with the increase of pore water pressure, among Fig. 5, the counting of soil pressure sensor reduces along with the increase of upstream head and pore water pressure, has verified principle of effective stress.
As Fig. 6, it is for using the change curve that oozes out flow-hydraulic gradient of the utility model simulation piping generation evolution, as seen from the figure, in hydraulic gradient hour, the proportional basically example of flow and hydraulic gradient concerns, when hydraulic gradient reaches about 0.5 the time, flow sharply increases, and illustrates that the perviousness of soil body this moment sharply becomes big, that is to say, fine grained in the soil body is taken out of the generation of piping just this moment in a large number.
Claims (10)
1. test unit of studying phenomenon of permeable damage, it is characterized in that: comprise the upstream water storage tank, be used to hold the soil body storage case and the downstream water storage tank of soil body sample, connect on the water storage tank of described upstream and drive the displacement drive control device that perpendicular displacement takes place for it, be connected with inlet water tank between described upstream water storage tank and the soil body storage case, and this inlet water tank is provided with the head inditron that is used to measure head difference between upstream water storage tank and the inlet water tank, then be provided for measuring the flowmeter that oozes out flow between soil body storage case and the downstream water storage tank, the removable cover that the setting of described soil body storage case top board can vertically move, and the vertical displacement measurement mechanism that is used to measure the vertical displacement of soil body sample is installed on this removable cover, in addition, described soil body storage case inside surface is equipped with and is respectively applied for the water pressure measuring device of measuring phenomenon of permeable damage evolution mesoporosity water pressure and the soil pressure measurement mechanism that is used to measure soil pressure.
2. according to the described test unit of claim 1, it is characterized in that: the output terminal of described removable cover upper surface and longitudinal load output unit is connected, and is provided for measuring the loading measurement mechanism of this longitudinal load vertical load that output unit is exported between the output terminal of longitudinal load output unit and the removable cover.
3. according to the described test unit of claim 2, it is characterized in that: described loading measurement mechanism, water pressure measuring device, vertical displacement measurement mechanism and soil pressure measurement mechanism are respectively load sensor, water pressure sensor, vertical displacement sensor and soil pressure sensor.
4. according to the described test unit of claim 3, it is characterized in that: a side panel of described soil body storage case adopts transparent material to be made, and the outside surface of this transparent panel is provided with the image collecting device that is used to take soil body sample particle trajectories.
5. according to the described test unit of claim 4, it is characterized in that: described image collecting device comprises high speed microimaging head.
6. according to the described test unit of claim 5, it is characterized in that: described head inditron, the water pressure sensing is clamored, soil pressure sensor, load sensor, the output terminal of vertical displacement sensor and high speed microimaging head is connected with data collector respectively, the output terminal of this data collector then with an analyzing and processing head difference, water pressure, soil pressure, longitudinal load, vertical displacement and these data of soil body sample particle trajectories, with output hydraulic gradient-time, pore water pressure-time, soil pressure-time and the computer data processing unit connection of oozing out four signs of flow-hydraulic gradient curve.
7. according to the described test unit of claim 6, it is characterized in that: described displacement drive control device comprises windlass and the hoisting gear that windlass is connected with the upstream water storage tank.
8. according to the described test unit of claim 7, it is characterized in that: the Pressure Actuated Device that described longitudinal load output unit comprises lifting jack and drives this lifting jack motion.
9. described according to Claim 8 test unit is characterized in that: also comprise water circle device, this water circle device comprises the ebullator that is arranged in the water storage tank of downstream, and the circulation delivery side of pump is connected with the upstream water storage tank.
10. according to the described test unit of claim 9, it is characterized in that: the connecting pipe between described ebullator output terminal and the upstream water storage tank is a telescopic water pipe.
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| CN200920042002U CN201378166Y (en) | 2009-04-02 | 2009-04-02 | Test device for studying permeable destruction phenomenon |
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| CN200920042002U CN201378166Y (en) | 2009-04-02 | 2009-04-02 | Test device for studying permeable destruction phenomenon |
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| CN101831924A (en) * | 2010-04-21 | 2010-09-15 | 上海交通大学 | Simulator for blocking groundwater seepage by underground structure |
| CN101893617A (en) * | 2010-06-24 | 2010-11-24 | 同济大学 | Tester for testing discount rule of water pressure of grouting circle of anti-water pressure emission-limit tunnel |
| CN102538896A (en) * | 2011-12-28 | 2012-07-04 | 中国科学院水利部成都山地灾害与环境研究所 | Flow stabilizing device for measuring different hydraulic gradients |
| CN103308434A (en) * | 2013-05-20 | 2013-09-18 | 辽宁工程技术大学 | Muddy water infiltration experiment device |
| CN101514978B (en) * | 2009-04-02 | 2013-09-25 | 河海大学 | Test method for studying phenomenon of permeable damage on soil body and test device thereof |
| CN103424536A (en) * | 2013-08-01 | 2013-12-04 | 河海大学 | Seepage failure testing device and method for seam pipeline between pipe bags and dam bags |
| CN104020273A (en) * | 2013-03-01 | 2014-09-03 | 中国地质科学院水文地质环境地质研究所 | Ultrahigh pressure consolidation test device and method |
| TWI470223B (en) * | 2012-07-20 | 2015-01-21 | Univ Chienkuo Technology | Quickly get the actual vertical load value of the pressurized structure |
| CN105572319A (en) * | 2015-12-11 | 2016-05-11 | 河海大学 | Hydraulic-induced covered karst collapse simulation testing device and using method |
| CN106290072A (en) * | 2016-08-15 | 2017-01-04 | 夏涛 | A kind of mosaic tiles water absorption detection device |
| CN106383217A (en) * | 2016-08-23 | 2017-02-08 | 贵州理工学院 | Method and device for testing critical hydrodynamic condition for soil damage and loss |
| CN106644841A (en) * | 2017-02-22 | 2017-05-10 | 辽宁工程技术大学 | Simulation test device for studying underground engineering piping phenomenon |
| CN106645646A (en) * | 2016-12-26 | 2017-05-10 | 立方通达实业（天津）有限公司 | Rock and earth mass washout and piping erosion simulation test observation system |
| CN106769758A (en) * | 2016-12-07 | 2017-05-31 | 河海大学 | A kind of prismatical joint Seepage of Rock Masses experimental rig and preparation method |
| CN106908586A (en) * | 2017-04-14 | 2017-06-30 | 桂林理工大学 | Soil layer disintegration device under a kind of karst area load action |
| WO2019095479A1 (en) * | 2017-11-17 | 2019-05-23 | 山东大学 | Simulation test system and method for whole process of filling karst seepage failure |
| CN110672497A (en) * | 2019-11-08 | 2020-01-10 | 宁夏大学 | Multifunctional infiltration piping tester |
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| CN101514978B (en) * | 2009-04-02 | 2013-09-25 | 河海大学 | Test method for studying phenomenon of permeable damage on soil body and test device thereof |
| CN101831924A (en) * | 2010-04-21 | 2010-09-15 | 上海交通大学 | Simulator for blocking groundwater seepage by underground structure |
| CN101831924B (en) * | 2010-04-21 | 2012-11-28 | 上海交通大学 | Simulator for blocking groundwater seepage by underground structure |
| CN101893617A (en) * | 2010-06-24 | 2010-11-24 | 同济大学 | Tester for testing discount rule of water pressure of grouting circle of anti-water pressure emission-limit tunnel |
| CN101893617B (en) * | 2010-06-24 | 2013-04-17 | 同济大学 | Tester for testing discount rule of water pressure of grouting circle of anti-water pressure emission-limiting tunnel |
| CN102538896A (en) * | 2011-12-28 | 2012-07-04 | 中国科学院水利部成都山地灾害与环境研究所 | Flow stabilizing device for measuring different hydraulic gradients |
| CN102538896B (en) * | 2011-12-28 | 2014-02-26 | 中国科学院水利部成都山地灾害与环境研究所 | Flow stabilizing device for measuring different hydraulic gradients |
| TWI470223B (en) * | 2012-07-20 | 2015-01-21 | Univ Chienkuo Technology | Quickly get the actual vertical load value of the pressurized structure |
| CN104020273A (en) * | 2013-03-01 | 2014-09-03 | 中国地质科学院水文地质环境地质研究所 | Ultrahigh pressure consolidation test device and method |
| CN103308434A (en) * | 2013-05-20 | 2013-09-18 | 辽宁工程技术大学 | Muddy water infiltration experiment device |
| CN103424536A (en) * | 2013-08-01 | 2013-12-04 | 河海大学 | Seepage failure testing device and method for seam pipeline between pipe bags and dam bags |
| CN103424536B (en) * | 2013-08-01 | 2015-07-15 | 河海大学 | Seepage failure testing device and method for seam pipeline between pipe bags and dam bags |
| CN105572319A (en) * | 2015-12-11 | 2016-05-11 | 河海大学 | Hydraulic-induced covered karst collapse simulation testing device and using method |
| CN105572319B (en) * | 2015-12-11 | 2017-11-24 | 河海大学 | A kind of waterpower induction covered karst collapses simulation test device and application method |
| CN106290072A (en) * | 2016-08-15 | 2017-01-04 | 夏涛 | A kind of mosaic tiles water absorption detection device |
| CN106290072B (en) * | 2016-08-15 | 2019-01-18 | 许陈菲 | A kind of mosaic tiles water imbibition detection device |
| CN106383217A (en) * | 2016-08-23 | 2017-02-08 | 贵州理工学院 | Method and device for testing critical hydrodynamic condition for soil damage and loss |
| CN106383217B (en) * | 2016-08-23 | 2018-04-13 | 贵州理工学院 | A kind of method and device for testing the critical hydrodynamic condition that damage of soil body is lost in |
| CN106769758A (en) * | 2016-12-07 | 2017-05-31 | 河海大学 | A kind of prismatical joint Seepage of Rock Masses experimental rig and preparation method |
| CN106645646A (en) * | 2016-12-26 | 2017-05-10 | 立方通达实业（天津）有限公司 | Rock and earth mass washout and piping erosion simulation test observation system |
| CN106644841A (en) * | 2017-02-22 | 2017-05-10 | 辽宁工程技术大学 | Simulation test device for studying underground engineering piping phenomenon |
| CN106644841B (en) * | 2017-02-22 | 2023-10-03 | 辽宁工程技术大学 | Analogue test device of research underground construction engineering piping phenomenon |
| CN106908586A (en) * | 2017-04-14 | 2017-06-30 | 桂林理工大学 | Soil layer disintegration device under a kind of karst area load action |
| WO2019095479A1 (en) * | 2017-11-17 | 2019-05-23 | 山东大学 | Simulation test system and method for whole process of filling karst seepage failure |
| CN110672497A (en) * | 2019-11-08 | 2020-01-10 | 宁夏大学 | Multifunctional infiltration piping tester |
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