CN207379886U - Discrete range-adjustable double-ring infiltration device - Google Patents
Discrete range-adjustable double-ring infiltration device Download PDFInfo
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- CN207379886U CN207379886U CN201721206520.3U CN201721206520U CN207379886U CN 207379886 U CN207379886 U CN 207379886U CN 201721206520 U CN201721206520 U CN 201721206520U CN 207379886 U CN207379886 U CN 207379886U
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model belongs to hydrogeological parameter sensing equipment technical field, more particularly to a kind of discrete range-adjustable double-ring infiltration device, it includes interior Markov bottle, piston is provided in interior Markov bottle, piston separates interior Markov bottle into two separate spaces in left and right, and the separate space of two is respectively adjustment space and working space；Outer Markov bottle；Bicyclic, bicyclic including inner ring and outer shroud, working space connects the region in inner ring, the region between outer Markov bottle connection inner ring and outer shroud；And adjusting mechanism, adjusting mechanism can control piston movement to adjust the cross-sectional area of adjustment space and working space.The discrete range-adjustable double-ring infiltration device can realize the in-situ monitoring of surface soil infiltration coefficient, measuring accuracy is also improved largely compared with traditional technology, be particularly suitable for infiltrating situation relatively slow, that Seepage flow time is longer, improve work efficiency with in-situ test data precision, be worthy to be popularized.
Description
Technical field
The utility model belongs to hydrogeological parameter sensing equipment technical field, and in particular to one kind enters for original position soil
Ooze the modified discrete range-adjustable double-ring infiltration device that coefficient/infiltration coefficient realizes monitoring.
Background technology
The infiltration coefficient in situ test of surface soil is one of physical parameter basic in survey for the purpose of locating hydrogeological resources, is research ground
Table water-underground water conversion, Groundwater Flow and essential key parameter of solute transport.The rainfall infiltration of surface soil
It is close that coefficient not only induces the conventional farmlands Problems of Water Conservancy such as geological disaster with the soil erosion, Surface Runoff, field irrigation, water, also
It is hydrologic process research, regional water resource evaluation, survey for the purpose of locating hydrogeological resources, the assessment of environmental geology antifouling property and sponge city
The key index of the great resources and environment problems such as city's construction, concerning the national economic development and exploitation/protection of resource environment.
Therefore, the infiltration coefficient in situ of surface soil is a basic and important test content, is related to irrigation and water conservancy work
Multiple professional domains such as journey, hydrogeology, engineering geology, environmental geology, sponge urban construction, more element conurbations geology.
The home position testing method now generally used has：Single-ring infiltration, double-ring infiltration, bailing test, water injection test, slug test, tension
Infiltration instrument, pressure pulse method in-situ test instrument etc..For the infiltration coefficient in-situ test of soil, test is simple, relative accuracy is high,
Most widely used technology is double-ring infiltration.
The basic functional principle of double-ring infiltration device is：In certain hydrogeological border, carried out to earth's surface ravelly ground
Water filling makes the water of infiltration reach stable, i.e., the infiltration water approximately equal of unit interval when using Darcy's law solve it is one-dimensional
Stablize the infiltration coefficient under Infiltration Condition.Double-ring infiltration equipment composition includes：Bicyclic, interior Markov bottle, outer Markov bottle, rubber tube
Deng.Especially by the effect of contraction of outer shroud infiltration field make inner ring water can only Vertical Infiltration from top to bottom, it is lateral so as to eliminate
The interference of seepage flow forms the advantage of the one-dimensional stable Vertical Infiltration of inner ring, therefore with than highers such as the method for testing pits, monocyclic methods
Precision.
But traditional double-ring infiltration in-situ testing technique remains following problems：It needs to bow when the 1st, observing Markov bottle water level
Depending on, cause to SEA LEVEL VARIATION observation there are more significant artificial error in reading；2nd, Markov bottle measures soil by water level decreasing
The measurement accuracy of infiltration capacity is poor, and there are dual artificial errors in reading and larger accumulated time error, seriously affect original
The quality of monitoring data；When the 3rd, for low permeability media, pay close attention to test process without interruption for a long time and carry out artificial reading, cause
Greatly drain on manpower and material resources and unnecessary field work security risk；4th, Markov bottle water supply finite volume tests process
Middle Markov bottle adds water that can bring error；5th, general double-ring infiltration device does not consider the influence of evaporation；6th, instrument in-site installation mistake
Journey makes inner ring outer shroud that may be in contact seepage flow, influences measurement accuracy to boundary effect caused by the destruction in native face.
In view of the above-mentioned problems, technical staff has carried out unremitting research and development and improvement：For Markov bottle error in reading, for water body
The problems such as product is limited, inconvenient to carry realizes constant pressure water supply, to replace geneva by ball-cock assembly or the principle for determining liquid level draining
Bottle such as utility model patent (CN 200420008646.6) " automatic water-supply double-ring infiltration device ", but also brings equipment excessively complicated
The shortcomings that.The problem of being destroyed for Influence of Evaporation and the installation of inner ring outer shroud to native face, utility model patent (CN
201510304528.2) provide a kind of " being easily installed and fixed vaporization prevention type double-ring infiltration device ".
The technical issues of above-mentioned many improvement are only partly solved as previously described, improves double-ring infiltration device to a certain degree
Applicability, operability and measurement accuracy, but still the promotion of in-situ test precision substance could not be realized, especially from can
Influence restricts the problem of double-ring infiltration technology application 3-4 in terms of operability and place applicability.That is, when failing to solve in-situ test
Between the long major defect (problem 3) taken time and effort, Markov bottle changes the error that water carrys out test tape and is further improved (problem
4)。
Utility model content
To solve the deficiencies in the prior art, the utility model combination need of work and prior art accumulation, one kind is provided
Discrete range-adjustable double-ring infiltration device, suitable for the high precision measurement in situ of topsoil infiltration coefficient, infiltration coefficient
Testing range is adjusted so as to which applicability is wider, for hydrology such as hydraulic engineerings, the earth's surface precipitation recharge coefficients such as field irrigation supply
The problems of geo-environment such as the engineering geological problems such as geological problem, sponge urban construction, surface soil layer antipollution assessment provide weight
The live index parameter wanted.
Technical solution provided by the utility model is as follows：
A kind of discrete range-adjustable double-ring infiltration device, includes at least：
Interior Markov bottle, is provided with piston in the interior Markov bottle, and the piston separates the interior Markov bottle into left and right
Two separate spaces, the separate space described in two are respectively adjustment space and working space；
Outer Markov bottle；
Bicyclic, described bicyclic including inner ring and outer shroud, the working space connects the region in the inner ring, the outer horse
Family name's bottle connects the region between the inner ring and the outer shroud, and by code requirement, annular diameters are traditionally arranged to be 25cm, and outer shroud is straight
Footpath is 50cm, high about 50cm, is routine techniques；
And adjusting mechanism, the adjusting mechanism can control the piston movement to adjust the adjustment space and the work
Make the cross-sectional area in space.
Specifically, interior Markov bottle feed water inlet and interior Markov bottle air entry are provided in the lower part of the interior Markov bottle, it is described
Interior Markov bottle feed water inlet connects the region in the inner ring with the interior Markov bottle air entry by pipeline respectively.
Further：
The interior Markov bottle feed water inlet is connected with the first threeway, and first threeway is connected with the first ball valve, and described first
Ball valve is connected with interior Markov bottle feed pipe, and the interior Markov bottle feed pipe connects the region in the inner ring, first threeway
It is also associated with pumping manually；
The interior Markov bottle air entry is connected with first flow formula regulating valve, and the first flow formula regulating valve is connected with interior
Markov bottle air intake duct, the interior Markov bottle air intake duct connect the region in the inner ring；
The height of the interior Markov bottle feed pipe water outlet is less than the height of the interior Markov bottle air intake duct air inlet.
Specifically, outer Markov bottle feed water inlet and outer Markov bottle air entry are provided in the lower part of the outer Markov bottle, it is described
Outer Markov bottle feed water inlet and the outer Markov bottle air entry connect the area between the inner ring and the outer shroud by pipeline respectively
Domain.
Further：
The outer Markov bottle feed water inlet is connected with the second threeway, and second threeway is connected with the second ball valve, and described second
Ball valve is connected with outer Markov bottle feed pipe, and the outer Markov bottle feed pipe connects the region between the inner ring and the outer shroud,
Second threeway is also connected with the manual pump, for the moisturizing of Markov bottle during in-situ test；
The outer Markov bottle air entry is connected with second flow formula regulating valve, and the second flow formula regulating valve is connected with outer
Markov bottle air intake duct, the outer Markov bottle air intake duct connect the region between the inner ring and the outer shroud；
The height of the outer Markov bottle feed pipe water outlet is less than the height of the outer Markov bottle air intake duct air inlet.
Specifically, the manual pump is detachable, connects first threeway or second threeway, i.e., described hand respectively
Dynamic pump is public for first threeway and second threeway.
Further, the interior Markov bottle is provided with horizontal ranging scale and longitudinal ranging scale.
Specifically, the piston, function are, realize that Markov bottle cross-sectional area is big in adjusting by side-to-side movement
It is small, which is characterized in that the interior Markov bottle working space of piston excellent Fluid Sealing performance guarantee and adjustment space it is mutual every
It is disconnected, no hydraulic connection and avoid pressure linkage effect.The adjusting mechanism, connection mode are, are set with helical configuration
Meter, is arranged on outside interior Markov bottle, is connected with internal piston, and function is, is grasped by the spiral of the adjusting mechanism
Make the transverse shifting of accurate control piston, and the horizontal ranging rod reading for passing through setting obtains the cross-sectional area of interior Markov bottle,
So as to fulfill the range regulatory function of double-ring infiltration device.
The discrete range-adjustable double-ring infiltration device can realize the in-situ monitoring of surface soil infiltration coefficient, be suitable for
The situation relatively slow, the steady seepage time is longer is infiltrated, the range scope of application with equipment is improved work efficiency, is worthy to be popularized.
Testing range by interior Markov bottle cross-sectional area AHorseIt adjusts.Traditional double-ring infiltration method uses the horse of fixed volume
Family name's bottle constant pressure water supply, range are suitable for the slightly larger sandy loam of infiltration coefficient, lam, are not suitable for hypotonic clay.If by perseverance
The Markov bottle cross-section variation to supply water is pressed, corresponding infiltration coefficient testing range changes linearly, so as to fulfill to infiltration
The adjusting of coefficient range.
Testing time can effectively be shortened by selecting the suitable cross-sectional area of interior Markov bottle.Traditional double-ring infiltration side
Not only measuring accuracy is poor for method, but also there are great manpower consumptions.The experiment of single group double-ring infiltration in-situ test is for different Jie
Its stabilization time of matter is different, and such as sand about 2h, lam about 4h, and for the slightly worse clay of infiltration coefficient, stabilization time is past
Toward more than 8h.Code requirement judges that infiltration coefficient tests whether that stabilization at least needs 5 discrete points, and also needs continuous observation after stablizing
More than 2h.It means that completing one group of up-to-standard test data using double-ring infiltration method on request, the testing time often surpasses
Cross 6h, and testing overall process needs technical staff on duty in shifts, it has to pay close attention to test process without interruption for a long time, in due course into
Pedestrian's part work and part study number has thereby resulted in great manpower and materials consumption and unnecessary security risk.Be worth it is further noted that
From the point of view of technical staff is for operability and field work safety during in-situ test in the wild, entire test process is more than
When stand-by period between 2 discrete data points of 10h or Markov bottle is more than 1h, that is, think to be not suitable at this using double-ring infiltration
Method.
In conclusion traditional double-ring infiltration method is caused to be limited another of (being not suitable for hypotonic place) in practical applications
Originally the reason is that the artificial reading duration is long, the cross-sectional area that device provided by the utility model passes through Markov bottle in adjusting
Realize the range adjustable (can preferably adapt to hypotonic place) of in-situ test infiltrated water, to effectively shorten the testing time (time saving
It is laborsaving).
Generally, a kind of discrete range-adjustable double-ring infiltration device provided by the utility model.Each component size,
Material, connection mode can be changed according to actual conditions on the premise of functional design requirements are met and selected；The adjustable design energy of range
It is applicable in sand, sandy loam, lam, clay, muck soil, the basement rock Weathering lamination isolith soil of infiltration coefficient different number grade
Medium；Suitable for regional hydraulic engineering, hydrogeology, engineering geology, environment geology survey, as sponge city, municipal works,
The leakage that hydraulic engineering is related to calculates, and small watershed precipitation recharge coefficient calculates, engineering ground under the extreme weather conditions such as heavy rain
Mechanical stability assessment, contaminated site infiltrated water evaluation with antifouling property assessment, etc..
Compared with prior art, its advantage and advantage are the utility model：
A kind of discrete range-adjustable double-ring infiltration device provided by the utility model have both testing range it is wider and
Test and the superior functionalities such as effectively shorten total time, emphasis solve traditional range applicability is slightly worse, Markov bottle change water error it is big,
The shortcomings of in-situ test overlong time takes time and effort adapts to the various places of different infiltration coefficient magnitudes, in traditional technology base
Also hypotonic area can be adapted on plinth to a certain degree.Have compared with similar technique device at the aspect of range ability, testing time etc. two larger
It is promoted, there is preferable market application foreground.
1) testing range is wider, is adjusted according to different medium and chooses suitable range.By in adjusting Markov bottle it is effective
Cross-sectional area is optional to realize the range of double-ring infiltration method difference infiltration coefficient test, and it is uncomfortable to be particularly suitable for traditional double-ring infiltration
The hypotonic clay that preferably measures, muck soil region；Meanwhile the adjustable structure design of testing range so that its scope of application is further
Become wide；
2) test and shorten total time, accumulate to shorten test total time by the effective cross section for adjusting equivalent interior Markov bottle；
3) by setting flow-type regulating valve at the air intake duct of Markov bottle, on the basis of former Markov bottle constant pressure water supply function
It is adjustable to realize water supply flow, Markov bottle cross-sectional area is adjustable in cooperation, and it is adjustable that infiltration coefficient testing range is better achieved；
4) by setting, pump and threeway, Markov bottle can realize water supplement function in situ, solve Markov bottle to a certain degree manually
Water supply finite volume, in-situ test change the large error problem that water is brought in the process.
Description of the drawings
Fig. 1 is the structure and working principle of discrete range-adjustable double-ring infiltration device provided by the utility model
Figure.
Fig. 2 is the details knot of interior Markov bottle in discrete range-adjustable double-ring infiltration device provided by the utility model
Composition.
Fig. 3 is the thin of adjusting mechanism part in discrete range-adjustable double-ring infiltration device provided by the utility model
Nodule composition.
Fig. 4 is that inside and outside Markov bottle is surveyed in situ in discrete range-adjustable double-ring infiltration device provided by the utility model
The fundamental diagram of moisturizing during examination.
In attached drawing 1,2,3,4, parts list represented by the reference numerals is as follows：
1a, interior Markov bottle, 1.1a, interior geneva bottle case, 1.2a, longitudinal ranging scale, 1.3a, adjusting mechanism, 1.4a, work
Plug, 1.5a, water, 1.6a, horizontal ranging scale, 1b, outer Markov bottle, 2a, inner ring, 2b, outer shroud, 3, gravel, 4a, first flow formula
Regulating valve, 4b, second flow formula regulating valve, 5a, the first threeway, 5b, the second threeway, 6a, the first ball valve, 6b, the second ball valve, 7,
Pump manually, 8a, interior Markov bottle feed pipe, 8b, outer Markov bottle feed pipe, 9a, interior Markov bottle air intake duct, 9b, outer Markov bottle air-breathing
Pipe, 11, swing handle, 12, swing arm, 13, screw thread, 14, spacing ring, 15, limit casing.
Specific embodiment
The principle and feature of the utility model are described below, illustrated embodiment is served only for explaining the utility model,
It is not intended to limit the scope of the utility model.
In a detailed embodiment, as shown in Figure 1, a kind of range-adjustable automates double-ring infiltration device, mainly
It is bicyclic including inner ring 2a and outer shroud 2b including interior Markov bottle 1a, outer Markov bottle 1b and bicyclic.Piston is provided in interior Markov bottle 1a
1.4a, cross-sectional area are adjusted, so that the double-ring infiltration device is applicable to different infiltration coefficient magnitude such as high permeabilities
Sandy soil, Oil in Super-low Permeability lam, clay, muck soil etc. in-situ test scene.
It is bicyclic for the well known infiltration of those skilled in the art it is bicyclic, if processing dimension is annular diameters 25cm, outer annular diameter 50cm,
High 50cm.
As shown in Fig. 1,4, operation principle is：Interior Markov bottle function is the inner ring constant pressure water supply in bicyclic, and right side is held
The outer Markov bottle function of carrying is the outer shroud constant pressure water supply in bicyclic, and bicyclic inside and outside liquid level remains one due to atmospheric pressure balances
It causes, thus forms one-dimensional stable Infiltration Condition.
As shown in Fig. 2, its specific connection mode is：Interior 1.1 rectangular frame of Markov bottle passes through portable rectangle piston 1.9
Separate the adjustment space for left side and the working space on right side, adjusting mechanism 1.3 can left and right adjusting packaged type rectangle work
The position of plug 1.9, exact position can be obtained by horizontal 1.6 reading of ranging scale, therefore by changing the transversal of working space
Area realizes the controllability of gas permeability measurement range.Can interior geneva be obtained by longitudinal 1.7 reading of ranging scale in experiment
Bottle liquid level drop-out value, the inner ring water supply of correction vacuum pressure sensor conversion.
As shown in Figure 2,3, the rectangular frame of interior Markov bottle 1a is empty for work by the partition of piston 1.9 of portable rectangle
Between and adjustment space, adjusting mechanism 1.3 can left and right adjusting movable type rectangle piston 1.9 position, exact position can pass through horizontal stroke
It is obtained to 1.6 reading of ranging scale, therefore the adjustable of gas permeability measurement range is realized by the cross-sectional area of Markov bottle in change
Section property.
The lower part of interior Markov bottle 1a is provided with interior Markov bottle feed water inlet and interior Markov bottle air entry.Interior Markov bottle feed water inlet
The first threeway 5a is connected with, the first threeway 5a is connected with the first ball valve 6a, the first ball valve 6a and is connected with interior Markov bottle feed pipe 8a,
Region in interior Markov bottle feed pipe 8a connection inner ring 2a, the first threeway 5a are also associated with pump 7 manually.Interior Markov bottle air entry connects
First flow formula regulating valve 4a is connected to, first flow formula regulating valve 4a is connected with interior Markov bottle air intake duct 9a, interior Markov bottle air-breathing
Region in pipe 9a connection inner ring 2a.The height for stating interior Markov bottle feed pipe 8a water outlets is less than interior Markov bottle air intake duct 9a air inlets
The height of mouth.
As shown in Figure 1,3, the lower part of outer Markov bottle 1b is provided with outer Markov bottle feed water inlet and outer Markov bottle air entry.Outside
Markov bottle feed water inlet is connected with the second threeway 5b, and the second threeway 5b is connected with the second ball valve 6b, the second ball valve 6b and is connected with outer horse
Region between family name's bottle feed pipe 8b, outer Markov bottle feed pipe 8b connections inner ring 2a and outer shroud 2b, the second threeway 5b are also associated with
Pump 7 manually.Outer Markov bottle air entry is connected with second flow formula regulating valve 4b, and second flow formula regulating valve 4b is connected with outer geneva
Region between bottle air intake duct 9b, outer Markov bottle air intake duct 9b connections inner ring 2a and outer shroud 2b.Outer Markov bottle feed pipe 8b water outlets
The height of mouth is less than the height of outer Markov bottle air intake duct 9b air inlets.
In a specific embodiment, as shown in figure 4, adjusting mechanism includes swing handle 11, swing handle 11 is provided with swing arm
12, swing arm 12 passes through the bottle wall of outer Markov bottle and is rotatablely connected with portable rectangle piston 1.9, is provided in the centre of swing arm 12
Screw thread 13.Restraining position ring block 14 is set in the junction of swing arm 12 and rectangle piston 1.9, limits the axial displacement of swing arm 12.It is revolving
Bar 12 is provided with limit casing 15 on the outside of one end of the bottle inner wall of outer Markov bottle, and limit casing 15 is close to the one side of screw thread
It is provided with matched internal thread.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model.The utility model
In, it illustrates for convenience, the variation of material, size, quantity etc. is no more than the express ranges of the utility model.It is all new in this practicality
Within the spirit and principle of type, any modifications, equivalent replacements and improvements are made should be included in the protection of the utility model
Within the scope of.
Claims (6)
1. a kind of discrete range-adjustable double-ring infiltration device, which is characterized in that include at least：
Interior Markov bottle (1a), is provided with piston (1.4a) in the interior Markov bottle (1a), and the piston (1.4a) will be described interior
Into two separate spaces in left and right, the separate space described in two is respectively adjustment space and working space for Markov bottle (1a) partition；
Outer Markov bottle (1b)；
Bicyclic, described bicyclic including inner ring (2a) and outer shroud (2b), the working space connects the region in the inner ring (2a),
The outer Markov bottle (1b) connects the region between the inner ring (2a) and the outer shroud (2b)；
And adjusting mechanism (1.3a), the adjusting mechanism (1.3a) can control the piston (1.4a) mobile to adjust the tune
Whole space and the cross-sectional area of the working space.
2. discrete range-adjustable double-ring infiltration device according to claim 1, feature exist：In the interior Markov bottle
The lower part of (1a) is provided with interior Markov bottle feed water inlet and interior Markov bottle air entry, the interior Markov bottle feed water inlet and the interior geneva
Bottle air entry connects the region in the inner ring (2a) by pipeline respectively.
3. discrete range-adjustable double-ring infiltration device according to claim 2, feature exist：
The interior Markov bottle feed water inlet is connected with the first threeway (5a), and first threeway (5a) is connected with the first ball valve (6a),
First ball valve (6a) is connected with interior Markov bottle feed pipe (8a), and the interior Markov bottle feed pipe (8a) connects the inner ring
Region in (2a), first threeway (5a) are also associated with pumping (7) manually；
The interior Markov bottle air entry is connected with first flow formula regulating valve (4a), first flow formula regulating valve (4a) connection
There is interior Markov bottle air intake duct (9a), the interior Markov bottle air intake duct (9a) connects the region in the inner ring (2a)；
The height of interior Markov bottle feed pipe (8a) water outlet is less than the height of interior Markov bottle air intake duct (9a) air inlet
Degree.
4. discrete range-adjustable double-ring infiltration device according to claim 3, it is characterised in that：In the outer geneva
The lower part of bottle (1b) is provided with outer Markov bottle feed water inlet and outer Markov bottle air entry, the outer Markov bottle feed water inlet and the outer horse
Family name's bottle air entry connects the region between the inner ring (2a) and the outer shroud (2b) by pipeline respectively.
5. discrete range-adjustable double-ring infiltration device according to claim 4, feature exist：
The outer Markov bottle feed water inlet is connected with the second threeway (5b), and second threeway (5b) is connected with the second ball valve (6b),
Second ball valve (6b) is connected with outer Markov bottle feed pipe (8b), and the outer Markov bottle feed pipe (8b) connects the inner ring
Region between (2a) and the outer shroud (2b), second threeway (5b) are also connected with the manual pump (7)；
The outer Markov bottle air entry is connected with second flow formula regulating valve (4b), second flow formula regulating valve (4b) connection
There is outer Markov bottle air intake duct (9b), the outer Markov bottle air intake duct (9b) is connected between the inner ring (2a) and the outer shroud (2b)
Region；
The height of outer Markov bottle feed pipe (8b) water outlet is less than the height of outer Markov bottle air intake duct (9b) air inlet.
6. discrete range-adjustable double-ring infiltration device according to any one of claims 1 to 5, it is characterised in that：It is described
Interior Markov bottle (1a) is provided with horizontal ranging scale (1.6a) and longitudinal ranging scale (1.2a).
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| CN201721206520.3U CN207379886U (en) | 2017-09-19 | 2017-09-19 | Discrete range-adjustable double-ring infiltration device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031380A (en) * | 2019-05-21 | 2019-07-19 | 科利尔环保科技有限责任公司 | A kind of method of scene nondestructive measurement celluar concrete infiltration rate |
| CN110333174A (en) * | 2019-07-09 | 2019-10-15 | 河海大学 | The automatic recording type Markov bottle of liquid level can be stablized |
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2017
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110031380A (en) * | 2019-05-21 | 2019-07-19 | 科利尔环保科技有限责任公司 | A kind of method of scene nondestructive measurement celluar concrete infiltration rate |
| CN110333174A (en) * | 2019-07-09 | 2019-10-15 | 河海大学 | The automatic recording type Markov bottle of liquid level can be stablized |
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Effective date of registration: 20231022 Address after: 430000 No. 69, Guanggu Avenue, Donghu New Technology Development Zone, Wuhan, Hubei Patentee after: Wuhan Geological Survey Center of China Geological Survey (Central South Geological Science and Technology Innovation Center) Address before: No.69 Guanggu Avenue, Donghu New Technology Development Zone, Wuhan City, Hubei Province 430205 Patentee before: Liu Xuehao |