CN108918023A - A kind of soil under vacuum preloading vacuum degree monitoring device and method - Google Patents
A kind of soil under vacuum preloading vacuum degree monitoring device and method Download PDFInfo
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- CN108918023A CN108918023A CN201810967795.1A CN201810967795A CN108918023A CN 108918023 A CN108918023 A CN 108918023A CN 201810967795 A CN201810967795 A CN 201810967795A CN 108918023 A CN108918023 A CN 108918023A
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- 239000002689 soil Substances 0.000 title claims abstract description 41
- 238000012806 monitoring device Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000004746 geotextile Substances 0.000 claims abstract description 33
- 239000000523 sample Substances 0.000 claims abstract description 24
- 238000012544 monitoring process Methods 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims description 25
- 238000005553 drilling Methods 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 6
- 238000009933 burial Methods 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 230000001788 irregular Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000008429 bread Nutrition 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L21/00—Vacuum gauges
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
A kind of soil under vacuum preloading vacuum degree monitoring device of the present invention and method, the invention device is that the vacuum probe for wrapping up geotextiles is placed in soil under vacuum preloading or vacuum preloading seals under film, pressure vacuum gauge is fixed in concrete fixed disk, it is connected between pressure vacuum gauge and vacuum probe by pressure pipe, the equivalent observation that vacuum degree between the soil body and vacuum probe is realized by vacuum probe inbuilt in the different depth soil body meets requirement of the Soft Ground Improved By Vacuum Preloading processing about vacuum degree real-time monitoring.The configuration of the present invention is simple is reliable, operate convenient, producing principle and material is convenient, safe and reliable, substantially increase soil vacuum monitoring efficiency and reliability, and safety monitoring cost is greatly reduced, it can be widely applied to Large-area Vacuum Preloading soil vacuum real-time monitoring.
Description
Technical field
The present invention relates to vacuum preloading vacuum-degree monitoring technical fields more particularly to a kind of soil under vacuum preloading vacuum degree to supervise
Survey device and method.
Background technique
As strand Park district economy construction investment paces are accelerated, it is becoming tight land resource day, for the rank for guaranteeing economic construction
Connecing property, it is one of the effective way of coastal area solution land resource scarcity, soil vacuum that large area, which encloses extra large vacuum preloading with making,
It is construction process control important indicator that degree, which especially seals the observation of under-membrance vacuum degree, is to understand whether prefabricating load reaches design and want
One of the important evidence for vacuum pre-press reinforcing effect assessment of summing.
But at this stage often using Electrical Measuring Instrument probe or artificial vacuum pipe network measurement method：1, Electrical Measuring Instrument is popped one's head in：Electricity
It is with high costs to survey instrument probe, it is difficult to realize that Large-area Vacuum Preloading basement process place is applied；2, artificial vacuum pipe network measurement
Mode：Often pressure pipe is inserted directly into vacuum pipe network, it is difficult to effectively observation soil under vacuum preloading vacuum degree and soil vacuum
Dissipation situation is spent, the real-time control of vacuum preloading construction quality is unfavorable for.To sum up, at this stage due to Electrical Measuring Instrument it is high at
The limitation of this and artificial vacuum pipe network measurement method, it is difficult to effectively monitoring soil under vacuum preloading vacuum degree, and not yet send out at present
Now it is suitable for Large-area Vacuum Preloading soil vacuum monitoring device.Therefore low cost, simple and reliable vacuum preloading soil are developed
Body vacuum degree monitoring device seems more important.
Summary of the invention
In order to reduce vacuum preloading vacuum-degree monitoring cost, Large-area Vacuum Preloading vacuum-degree monitoring efficiency, this hair are improved
It is bright from Practical Project, provide a kind of soil under vacuum preloading vacuum degree monitoring device and method, apparatus structure principle letter
It is single, it is easy to operate, and cost of manufacture and material are convenient, and technical solution provided by the invention is：
A kind of soil under vacuum preloading vacuum degree monitoring device, including vacuum degree reading fixing end, vacuum pressure pipe, vacuum are visited
Head and geotextiles, described vacuum pressure pipe one end are connected and fixed on the vacuum degree reading fixing end on vacuum preloading sealing film,
Other end connection is embedded in the vacuum probe in the vacuum soil body or under vacuum preloading sealing film；The vacuum probe includes hard
Pressure pipe, conical top cover and fixed rope, hard pressure pipe is protruded into one end of the vacuum pressure pipe, and passes through fixed rope
It is fixed in hard pressure pipe；On the interlude tube body for protruding into hard pressure pipeline section and hard pressure pipe of vacuum pressure pipe respectively
Equipped with pressure drilling, one end of hard pressure pipe is equipped with the conical top cover being sealed on hard pressure pipe, hard pressure pipe appearance
Bread is wrapped with geotextiles, ties up and is fixed on the vacuum pressure pipe except the hard pressure pipe other end after geotextiles are wrapped up, can
It is effectively isolated vacuum prepressing reinforcement soft soil mud vacuum pressure pipe, guarantees effective observation of soil vacuum.
The vacuum degree reading fixing end includes pressure vacuum gauge, pressure pipe conversion head, hard fixing pipe and concrete
Fixed disk, concrete fixed disk center are inserted with hard fixing pipe, and concrete fixed disk outer surface is enclosed with geotextiles, soil
The fixed bottom end for being bound in hard fixing pipe of work cloth；The other end of the vacuum pressure pipe passes through geotextiles and concrete is fixed
Disk, and penetrate in hard fixing pipe and connect by pressure pipe conversion head with pressure vacuum gauge, it is solid that pressure vacuum gauge is fixed on hard
Determine the top of pipe, to realize the intuitive real-time monitoring of vacuum degree, and effective protection is carried out to vacuum preloading sealing film.When with pumping
Vacuum starts, and water level decreasing vacuum pressure gradually forms in the hydraulic reclamation soil body, forms vacuum probe cavity equivalent with the periphery soil body
Vacuum degree manually read and as vacuum pressure pipe is transferred to pressure vacuum gauge.
A kind of monitoring method using the soil under vacuum preloading vacuum degree monitoring device, it includes the following steps：
A, the hard pressure pipe and hard fixing pipe for having tailored certain length in advance design burial place according to vacuum probe
And depth, the vacuum pressure pipe for making certain length is cut, according to the length more smaller than hard pressure pipe pipe range, in vacuum pressure pipe
One end open up pressure drilling, the preferably irregular sequence of pressure drilling；Pressure is opened up on the interlude tube body of hard pressure pipe
Power aperture；Hard pressure pipe is protruded into the one end for the vacuum pressure pipe for offering pressure drilling, and is fixed on by fixed rope
In hard pressure pipe；It is inserted into tapered top cover in hard pressure pipe one end, and wraps up geotextiles in outer surface, geotextiles are tied up solid
On vacuum pressure pipe except hard pressure pipe other end end；
B, casting concrete fixed disk is inserted into hard fixing pipe at concrete fixation disk center when pouring and is consolidated vertically
It is fixed, after concrete setting is fixed, concrete fixed disk is wrapped up with geotextiles, and be bound in the bottom end of hard fixing pipe；
C, when vacuum preloading seals film and vacuum pump is completed to lay, on the vacuum preloading sealing film near burial place
An opening is opened up, downward by the conical top cover for the vacuum probe made, is pressed into the design depth of burying soil body by rod piece
Or under the vacuum preloading sealing film at a certain distance from lying in away from opening, opening vacuum preloading sealing film is tied up in vacuum pressure
Guan Shang, blend compounds water-stop；
D, it is placed around vacuum degree reading fixing end in opening, the other end of vacuum pressure pipe is passed through into geotextiles and coagulation
Native fixed disk, and penetrate in hard fixing pipe and connect by pressure pipe conversion head with pressure vacuum gauge, and pressure vacuum gauge is consolidated
Due to the top of hard fixing pipe, vacuum degree reading position fixed ends are adjusted in relatively steady place；
E, it opens vacuum pump and carries out vacuum preloading, check that former vacuum preloading seals film opening sealing effect, vacuum pressure
Table and pressure pipe conversion head junction seal situation, carry out soil under vacuum preloading vacuum-degree monitoring after confirming sealing effect.
Beneficial effect of the present invention：
1, structure of the invention principle is simple, manufacturing cost is low, and monitoring data are intuitive and reliable, easy to operate.
2, for the present invention using geotextiles package vacuum probe isolation soil body siltation vacuum probe, formation can only be gentle by water
Opposing seal cavity, realize sealing cavity and periphery soil vacuum synchronism, substantially increase concrete soil vacuum
Spend the reliability and the inbuilt survival rate of monitoring instrument of monitoring.
3, the present invention fully considers the importance of vacuum preloading sealing film sealing effect, on the outside of fixed disk and vacuum probe
Protectiveness geotextiles are wrapped up in outside, prevent the destruction that film is sealed to vacuum preloading.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
In figure：1- vacuum degree reads fixing end；11- pressure vacuum gauge；12- pressure pipe conversion head；13- hard fixing pipe；
14- concrete fixed disk；2- vacuum pressure pipe；3- vacuum probe；31- hard pressure pipe；32- conical top cover；33- fixed rope
Rope；4- geotextiles.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings：
As shown in Figure 1, a kind of soil under vacuum preloading vacuum degree monitoring device of the present invention, including vacuum degree reading fixing end 1,
Vacuum pressure pipe 2, vacuum probe 3 and geotextiles 4, one end of vacuum pressure pipe 2 are connected and fixed on vacuum preloading sealing film
Vacuum degree reads fixing end 1, and other end connection is embedded in the vacuum probe 3 in the vacuum soil body or under vacuum preloading sealing film；Very
Sky probe 3 includes hard pressure pipe 31, conical top cover 32 and fixed rope 33, and hard pressure is protruded into one end of vacuum pressure pipe 2
Pipe 31, and be fixed in hard pressure pipe 31 by fixed rope 33；Vacuum pressure pipe 2 protrudes into 31 sections of hard pressure pipe and hard
It is respectively equipped with pressure drilling on the interlude tube body of matter pressure pipe 31,2 sections of vacuum pressure pipe of the pipe range equipped with pressure drilling omits
Less than the pipe range of hard pressure pipe 31；One end of hard pressure pipe 31 is equipped with the conical top cover being sealed on hard pressure pipe 31
32,31 outer surface of hard pressure pipe is enclosed with geotextiles 4, will geotextiles 4 wrap up after tie up that be fixed on hard pressure pipe 31 another
On vacuum pressure pipe 2 except end.
It includes pressure vacuum gauge 11, pressure pipe conversion head 12, hard fixing pipe 13 and concrete that vacuum degree, which reads fixing end 1,
Fixed disk 14,14 center of concrete fixed disk are inserted with hard fixing pipe 13, and 14 outer surface of concrete fixed disk is enclosed with
Geotextiles 4, the fixed bottom end for being bound in hard fixing pipe 13 of geotextiles 4；The other end of the vacuum pressure pipe 2 passes through geotextiles
4 and concrete fixed disk 14, and penetrate in hard fixing pipe 13 and connect by pressure pipe conversion head 12 with pressure vacuum gauge 11, very
Hollow pressure gauge 11 is fixed on the top of hard fixing pipe 13.
The monitoring method of soil under vacuum preloading vacuum degree monitoring device of the present invention, includes the following steps：
A, the hard pressure pipe 31 and hard fixing pipe 13 for having tailored certain length in advance are buried according to the design of vacuum probe 3
If position and depth, cuts and make the vacuum pressure pipe 2 of certain length, according to the length more smaller than 31 pipe range of hard pressure pipe,
One end of vacuum pressure pipe 2 opens up pressure drilling, the preferably irregular sequence of pressure drilling；In the interlude of hard pressure pipe 31
Pressure drilling is opened up on tube body；Hard pressure pipe 31 is protruded into the one end for the vacuum pressure pipe 2 for offering pressure drilling, and is passed through
Fixed rope 33 is fixed in hard pressure pipe 31；It is inserted into tapered top cover 32 in 31 one end of hard pressure pipe, and is wrapped in outer surface
Geotextiles 4 are wrapped up in, geotextiles 4 are tied up and are fixed on the vacuum pressure pipe 2 except 31 other end end of hard pressure pipe；
B, casting concrete fixed disk 14 is inserted into hard fixing pipe 13 and is erected at 14 center of concrete fixed disk when pouring
It is straight fixed, after concrete setting is fixed, concrete fixed disk 14 is wrapped up with geotextiles 4, and be bound in hard fixing pipe 13
Bottom end；
C, when vacuum preloading seals film and vacuum pump is completed to lay, on the vacuum preloading sealing film near burial place
An opening is opened up, downward by the conical top cover 32 for the vacuum probe 3 made, the design depth of burying soil body is pressed by rod piece
In or the vacuum preloading sealing film at a certain distance from lying in away from opening under, tie up opening vacuum preloading sealing film in vacuum pressure
In solenoid 2, blend compounds water-stop；
D, it is placed around vacuum degree reading fixing end 1 in opening, the other end of vacuum pressure pipe 2 is passed through into 4 He of geotextiles
Concrete fixed disk 14, and penetrate in hard fixing pipe 13 and connect by pressure pipe conversion head 12 with pressure vacuum gauge 11, and will
Pressure vacuum gauge 11 is fixed on the top of hard fixing pipe 13, and adjustment vacuum degree reading 1 position of fixing end is in relatively steady place；
E, it opens vacuum pump and carries out vacuum preloading, check that former vacuum preloading seals film opening sealing effect, vacuum pressure
Table 11 and 12 junction of pressure pipe conversion head seal situation, carry out soil under vacuum preloading vacuum-degree monitoring after confirming sealing effect.
Invention has been described for above-described embodiment combination attached drawing, and but it cannot be understood as to the invention patent
The limitation of range, it is noted that for those of ordinary skill in the art, in the premise for not departing from present inventive concept
Under, various modifications and improvements can be made, these are all belonged to the scope of protection of the present invention.
Claims (4)
1. a kind of soil under vacuum preloading vacuum degree monitoring device, including it is vacuum degree reading fixing end (1), vacuum pressure pipe (2), true
Sky probe (3) and geotextiles (4), it is characterised in that：Described vacuum pressure pipe (2) one end is connected and fixed on vacuum preloading sealing
Vacuum degree on film reads fixing end (1), and other end connection is embedded in the vacuum in the vacuum soil body or under vacuum preloading sealing film
It pops one's head in (3)；The vacuum probe (3) includes hard pressure pipe (31), conical top cover (32) and fixes rope (33), described
One end of vacuum pressure pipe (2) is protruded into hard pressure pipe (31), and is fixed on hard pressure pipe (31) by fixed rope (33)
It is interior；It is respectively equipped on the interlude tube body for protruding into hard pressure pipe (31) section and hard pressure pipe (31) of vacuum pressure pipe (2)
Pressure drilling, one end of hard pressure pipe (31) are equipped with the conical top cover (32) being sealed on hard pressure pipe (31), hard pressure
Solenoid (31) outer surface is enclosed with geotextiles (4), is fixed on hard pressure pipe (31) other end for tying up after geotextiles (4) package
Except vacuum pressure pipe (2) on.
2. soil under vacuum preloading vacuum degree monitoring device according to claim 1, it is characterised in that：The vacuum degree is read
Number fixing end (1) includes pressure vacuum gauge (11), pressure pipe conversion head (12), hard fixing pipe (13) and concrete fixed disk
(14), concrete fixed disk (14) center is inserted with hard fixing pipe (13), concrete fixed disk (14) outer surface package
Have geotextiles (4), the fixed bottom end for being bound in hard fixing pipe (13) of geotextiles (4)；The other end of the vacuum pressure pipe (2)
Across geotextiles (4) and concrete fixed disk (14), and penetrate in hard fixing pipe (13) by pressure pipe conversion head (12) with
Pressure vacuum gauge (11) connection, pressure vacuum gauge (11) are fixed on the top of hard fixing pipe (13).
3. soil under vacuum preloading vacuum degree monitoring device according to claim 1, it is characterised in that：Described is equipped with pressure
The pipe range of vacuum pressure pipe (2) section of aperture is slightly less than the pipe range of hard pressure pipe (31).
4. a kind of monitoring method using soil under vacuum preloading vacuum degree monitoring device described in as claimed in claim 1 or 22, feature exist
In：It includes the following steps：
A, the hard pressure pipe (31) and hard fixing pipe (13) for having tailored certain length in advance are designed according to vacuum probe (3)
Burial place and depth cut the vacuum pressure pipe (2) for making certain length, according to the length more smaller than hard pressure pipe (31) pipe range
Degree opens up pressure drilling, the preferably irregular sequence of pressure drilling in one end of vacuum pressure pipe (2)；In hard pressure pipe
(31) pressure drilling is opened up on interlude tube body；Hard is protruded into the one end for the vacuum pressure pipe (2) for offering pressure drilling
Pressure pipe (31), and be fixed in hard pressure pipe (31) by fixed rope (33)；It is inserted into hard pressure pipe (31) one end
Geotextiles (4), are tied up that be fixed on hard pressure pipe (31) another by tapered top cover (32), and wrap up geotextiles (4) in outer surface
It holds on the vacuum pressure pipe (2) except end；
B, hard fixing pipe (13) are inserted into simultaneously at concrete fixed disk (14) center when pouring in casting concrete fixed disk (14)
It is vertical fixed, after concrete setting is fixed, concrete fixed disk (14) are wrapped up with geotextiles (4), and be bound in hard and fix
Manage the bottom end of (13)；
C, it when vacuum preloading seals film and vacuum pump is completed to lay, is opened up on the vacuum preloading sealing film near burial place
One opening downward by the conical top cover (32) of the vacuum probe made (3) is pressed into the design depth of burying soil body by rod piece
In or the vacuum preloading sealing film at a certain distance from lying in away from opening under, tie up opening vacuum preloading sealing film in vacuum pressure
In solenoid (2), blend compounds water-stop；
D, it is placed around vacuum degree reading fixing end (1) in opening, the other end of vacuum pressure pipe (2) is passed through into geotextiles (4)
With concrete fixed disk (14), and penetrate in hard fixing pipe (13) through pressure pipe conversion head (12) and pressure vacuum gauge (11)
It connects, and pressure vacuum gauge (11) is fixed on to the top of hard fixing pipe (13), adjustment vacuum degree reads fixing end (1) position
In relatively steady place；
E, it opens vacuum pump and carries out vacuum preloading, check that former vacuum preloading seals film opening sealing effect, pressure vacuum gauge
(11) and pressure pipe conversion head (12) junction seals situation, carries out soil under vacuum preloading vacuum degree prison after confirming sealing effect
It surveys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810967795.1A CN108918023A (en) | 2018-08-23 | 2018-08-23 | A kind of soil under vacuum preloading vacuum degree monitoring device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810967795.1A CN108918023A (en) | 2018-08-23 | 2018-08-23 | A kind of soil under vacuum preloading vacuum degree monitoring device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108918023A true CN108918023A (en) | 2018-11-30 |
Family
ID=64406672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810967795.1A Pending CN108918023A (en) | 2018-08-23 | 2018-08-23 | A kind of soil under vacuum preloading vacuum degree monitoring device and method |
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| Country | Link |
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| CN (1) | CN108918023A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110241801A (en) * | 2019-05-10 | 2019-09-17 | 浙江工业大学 | Soil vacuum monitoring method and device under a kind of vacuum preloading sealing film |
| CN114166413A (en) * | 2021-12-13 | 2022-03-11 | 华侨大学 | Vacuum degree sampling detection device and method under vacuum preloading film |
| CN114166413B (en) * | 2021-12-13 | 2024-11-15 | 华侨大学 | Vacuum degree sampling detection device and method under vacuum pre-pressing film |
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| CN101413261A (en) * | 2008-11-28 | 2009-04-22 | 天津市水利科学研究所 | Double-layer low-position vacuum preload consolidation device and soft soil foundation reinforcing method |
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| CN204255569U (en) * | 2014-10-10 | 2015-04-08 | 无限极（中国）有限公司 | A kind of device for fast detecting of freeze-dried powder Dewar bottle vacuum tightness |
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| CN204705431U (en) * | 2015-06-01 | 2015-10-14 | 安徽百特新材料科技有限公司 | The device of vacuum tightness in a kind of on-line measurement vacuum insulation panel |
| CN207392243U (en) * | 2017-11-09 | 2018-05-22 | 中交一公局厦门工程有限公司 | A kind of subway station side wall sprinkling curing system |
| CN208953197U (en) * | 2018-08-23 | 2019-06-07 | 浙江省水利水电勘测设计院 | Soil under vacuum preloading vacuum degree monitoring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1035805A (en) * | 1950-04-11 | 1953-08-31 | Instrument for the measurement of high voids | |
| FR1291996A (en) * | 1961-06-10 | 1962-04-27 | Heraeus Gmbh W C | Diaphragm pressure gauge for vacuum measurement |
| CN2754077Y (en) * | 2004-11-05 | 2006-01-25 | 水利部交通部电力工业部南京水利科学研究院 | Foundation soil vacuum degree sensor |
| CN101413261A (en) * | 2008-11-28 | 2009-04-22 | 天津市水利科学研究所 | Double-layer low-position vacuum preload consolidation device and soft soil foundation reinforcing method |
| CN102797922A (en) * | 2011-05-27 | 2012-11-28 | 安振永 | Seal rotation system for connecting hydraulic machine and pressure gauge |
| CN103015400A (en) * | 2013-01-11 | 2013-04-03 | 谭再坤 | Efficient quick method for treating separated directly-connected vacuum preloaded foundation |
| CN204255569U (en) * | 2014-10-10 | 2015-04-08 | 无限极（中国）有限公司 | A kind of device for fast detecting of freeze-dried powder Dewar bottle vacuum tightness |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110241801A (en) * | 2019-05-10 | 2019-09-17 | 浙江工业大学 | Soil vacuum monitoring method and device under a kind of vacuum preloading sealing film |
| CN114166413A (en) * | 2021-12-13 | 2022-03-11 | 华侨大学 | Vacuum degree sampling detection device and method under vacuum preloading film |
| CN114166413B (en) * | 2021-12-13 | 2024-11-15 | 华侨大学 | Vacuum degree sampling detection device and method under vacuum pre-pressing film |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181130 |