CN105735376A - Test equipment for discharge capacity of drain board with board-soil interaction considered and test method thereof - Google Patents
Test equipment for discharge capacity of drain board with board-soil interaction considered and test method thereof Download PDFInfo
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- 239000002689 soil Substances 0.000 title claims abstract description 113
- 238000012360 testing method Methods 0.000 title claims abstract description 84
- 238000010998 test method Methods 0.000 title claims abstract description 19
- 230000003993 interaction Effects 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 95
- 239000004816 latex Substances 0.000 claims abstract description 58
- 229920000126 latex Polymers 0.000 claims abstract description 58
- 238000000034 method Methods 0.000 claims abstract description 27
- 230000008569 process Effects 0.000 claims abstract description 8
- 239000010802 sludge Substances 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 28
- 238000004513 sizing Methods 0.000 claims description 19
- 229920001971 elastomer Polymers 0.000 claims description 18
- 238000007596 consolidation process Methods 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 8
- 239000000284 extract Substances 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 4
- 239000000839 emulsion Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000009966 trimming Methods 0.000 claims description 3
- 238000013459 approach Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 238000009530 blood pressure measurement Methods 0.000 abstract 2
- 238000013461 design Methods 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 12
- 239000004033 plastic Substances 0.000 description 4
- 239000004576 sand Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000012913 prioritisation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
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Abstract
The invention discloses test equipment for the discharge capacity of a drain board with board-soil interaction considered and a test method thereof. A board-soil unit body covered with a latex film is arranged inside a pressure chamber, and a water circulation outlet in the upper part of the pressure chamber is connected to a water volume measurer; a water circulation inlet in the lower part of the pressure chamber is connected to a fixed water head for inputting water; the upper part of the pressure chamber is connected to a water outlet end pressure measurement pipe, and the lower part of the pressure chamber is connected to a water inlet end pressure measurement pipe; an upper lateral pressure output pipe and a lower lateral pressure output pipe are externally connected to the pressure chamber. The test equipment and the test method are characterized in that a soil body is arranged between the latex film and the drain board and is a sludge layer; test pressure directly acts on the latex film through the pressure chamber and then acts on the drain board through the transmission effect of the soil body. According to the test equipment and the test method, the shortcomings of the prior art are overcome, the test results meet the practical conditions of projects better, the operability is higher, automatic tests can be realized, reliable basic data are provided for model selection of the drain board in the process of treating soft foundation projects through the drainage concretion method by the test results, and the limitation that the model of the drain board is uniformly selected according to the board insertion depth in existing design work of the drainage concretion method is broken through.
Description
Technical field
nullThe invention belongs to Geotechnical Engineering Soft Soil Subgrade Treatment Techniques field，It is specifically related to a kind of novel equipment measuring draining board longitudinal flowing water measuring and complete set technology，Improve in existing conventional drainage plate longitudinal flowing water measuring measuring technology and do not account for the technological deficiencies such as plate soil interaction，Vacuum preloading model test can be passed through in indoor、Piling prepressing model test or directly charge the method for mud to make plate soil unit，Longitudinal flowing water measuring by test board soil unit，Reach to consider the purpose that plate soil interaction situation gets off to test draining board longitudinal flowing water measuring，This technology solves existing draining board longitudinal flowing water measuring method of testing and does not account for plate soil interaction、Test result is difficult to the key technical problems such as the actual water flowing characteristic accurately reflecting draining board，The reliable firsthand information is provided for the type selecting of plastic draining board in draining concretion method soft soil foundation.
Background technology
Along with China's reform and opening-up constantly advances the fast development with modernization construction, the contradiction having a large population and a few land to depth, the natural excellent ground that can directly utilize is fewer and feweri, reclaims fields from the sea and forms a kind of new normality.Feature, foundation bearing capacity and the stability such as the weak clay ground of new hydraulic reclamation has water content height, bad hydraulic permeability, compressibility is big, intensity is low cannot meet engineering instructions for use, it is necessary to take measures of foundation treatment to carry out consolidation process.
Draining concretion method is the soft base processing method of most economical practicality, is one of reinforcing soft soil foundation most effectual way.Draining concretion method is mainly made up of drainage system and compression system, drainage system is divided into again horizontal drainage system and two parts of chimney drain, horizontal drainage system is typically all and is undertaken by certain thickness medium coarse sand bed course, chimney drain includes sand drain, sand wick and plastic draining board, and wherein plastic draining board is most widely used..
Discharging consolidation ratio juris is exactly a certain amount of load of classification applying on the soft soil foundation laid drainage system, soft soil foundation produces excess pore water pressure, along with the Free water in soft soil foundation is discharged, excess pore pressure dissipation, ground effective stress is increased, thus reaching the purpose of reinforcing soft ground.The reliability of drainage system is directly connected to the success or failure of draining concretion method.Plastic draining board is as one of the important component part of drainage system, and its water flowing characteristic becomes the focal issue of draining concretion method success or failure, and therefore, the water flowing characteristic accurately testing draining board is most important.
Conventional drainage plate water flowing characteristic test method (geosynthetics test procedure SL235-2012) is directly to be loaded by the draining board being surrounded by latex film in water-flowing amount test pressure chamber, pressure chamber is applied confined pressure, adjusting the water level of water inlet pipe and water outlet pipe, water flowing subsequently is tested.This method of testing can not effectively reflect the actual water flowing characteristic of draining board, along with bigger vertical deformation occurs draining board and is subject to the impact of soil body lateral stress, its water flowing characteristic generation large change in engineering.Such as, in new hydraulically filled sludge foundation treatment engineering of reclaiming fields from the sea, adopt the draining board water passing capacity of conventional method test to meet requirement, but project treatment effect does not reach requirement.The problems referred to above are because conventional water-flowing amount method of testing of the prior art and do not account for plate soil interaction.
Summary of the invention
It is an object of the invention to provide a kind of draining board water-flowing amount test equipment considering plate soil interaction and the setting of this equipment, using method.The present invention needs the key problem in technology solved to be in that: improve existing draining board longitudinal flowing water measuring measuring technology defect, it is provided that the equipment of a kind of novel test draining board longitudinal flowing water measuring and technical scheme.This equipment is made up of pressure chamber, draining board water passage system, lateral pressure applying and control system, draining board water flowing head control system, draining board water flowing supply and water flowing system for measuring quantity etc..
The technical scheme completing foregoing invention task is, a kind of draining board water-flowing amount test equipment considering plate soil interaction, the plate soil unit (sample) being surrounded by latex film is arranged in water-flowing amount test pressure chamber, the water flowing outlet on water-flowing amount test pressure chamber top, water receiving measurer；The water flowing entrance of water-flowing amount test pressure chamber bottom, connects and determines head water inlet；Meanwhile, water-flowing amount test pressure chamber top, water-flowing amount test pressure chamber bottom pick out water end (W.E.) pressure-measuring pipe and water inlet end pressure-measuring pipe respectively；Outlet tube under outlet tube and lateral pressure in the external lateral pressure of pressure chamber, it is characterised in that described plate soil unit is to be provided with the soil body between latex film and draining board, and this soil body is mud；Described test pressure directly acts on latex film by pressure chamber, acts on draining board again through the soil body (mud) transmission.
That is, the described sample in the present invention program " plate soil unit " is different from sample of the prior art, and sample of the prior art is draining board；And the sample of the present invention is the coalition of draining board and the soil body.
The sample of this draining board of the present invention and the coalition of the soil body has two kinds of manufacture methods: the first directly charges mud between described latex film and draining board；It two is utilize vacuum preloading or piling prepressing model test to make.With reference to hereinafter " method of testing " part.
The further improvement of above technical scheme, has following prioritization scheme:
1, described " draining board being surrounded by latex film is arranged in water-flowing amount test pressure chamber ", concrete set-up mode is: test being provided with base core groove bottom pressure chamber at water-flowing amount, one of the to be measured plate soil unit (sample) being surrounded by latex film inserts this base core groove, clamp-on the gap between draining board and core groove with rubber ring and cover cover plate, making draining board and core groove flexible sealing；
2, the set-up mode wrapping in the latex film outside draining board is: be provided with plate soil unit base bottom water-flowing amount test pressure chamber；Latex film lower end is fixed on this plate soil unit base, and tightens with latex elastic tape；
3, plate soil unit sizing cylinder is installed outside latex film；
4, latex film upper end is turned over that to be enclosed within this sizing cylinder suitable for reading；
5, when adopt directly charge sludge process make plate soil unit time, be surrounded by outside the draining board of latex film on set protection set, it is prevented that when charging mud, too pollute draining board, charging after mud terminates, pull out draining board protection set；
When adopting vacuum or piling prepressing model test makes plate soil unit, add cover plate by gap sealing between draining board and core groove with rubber ring.
The technical scheme completing second invention task of the application is, the method for testing of the draining board water-flowing amount test equipment of above-mentioned consideration plate soil interaction.
According to different situations and requirement, the method for testing of the present invention is divided into two kinds of different operating methods in following two situation:
One, directly charge mud make plate soil unit and test water-flowing amount test method:
Two, vacuum or piling prepressing make plate soil unit test method.
Two kinds of methods are respectively described below:
One, directly charge mud make plate soil unit and test water-flowing amount test method, it is characterised in that step is as follows,
(1). by inserted base core groove of draining board (sample), clamp-on the gap between draining board and core groove with rubber ring and cover cover plate, making draining board and core groove flexible sealing；
(2). bottom discharge plate water-flowing device is installed, connects water inlet pipe and water inlet end head measures pipeline；
(3). by the draining board inserted base core groove of plate soil unit one end, clamp-on the gap between draining board and core groove with rubber ring and cover cover plate, making draining board and core groove flexible sealing；
(4). at the outer installing plate soil unit sizing cylinder of latex film；
. latex film upper end is turned over be enclosed within sizing cylinder suitable for reading；
(6). put draining board protection set, it is prevented that when charging mud, too pollute draining board；
(7). in the latex film that sizing cylinder supports, charge mud, charge in process and step up draining board sheath with mud height until extracting completely.Mud charges increases cylinder close to installation time suitable for reading, makes mud face exceed sizing cylinder about 2cm suitable for reading；
(8). stand 18～20 hours after mud adds 2kg weight；
(9). removing and increase cylinder, remove superelevation mud, making earth pillar height is 400mm；Plate soil unit is constituted with this；
(10). guide sleeves on draining board upper end is overlapped, upper cover is installed, draining board extracts guide sleeves after passing cover core groove, adds cover plate by gap sealing between draining board and core groove with rubber ring；
(11). sealing tightened by latex film upper end and plate soil unit upper cover latex elastic tape；
(12). pressure chamber and top water-flowing device are installed, connect water side head and measure pipeline；
(13). pressure chamber is intake, and classification adds lateral pressure consolidation；
(14). full pressure started to survey water-flowing amount after 60 minutes.According to draining board length adjustment test head before measuring so that it is meet hydraulic gradient i=0.5.
2～3 hours repeated measure water-flowing amounts in interval, record water flowing flow and water flowing time.Until water-flowing amount measured value meets change≤5% in 6 hours, last measured value is this draining board water-flowing amount result of the test.
Draining board water-flowing amount is calculated according to formula (1)；
Q water-flowing amount in formula, cm3/s；
By the water yield of draining board, cm in the V t time period3；
The time that t is experienced by V flow, s；
I hydraulic gradient, is set as 0.5.
Two, vacuum or piling prepressing make plate soil unit test method:
(1). carry out vacuum or piling prepressing model test by predetermined compression ratio, in the model cylinder pressed in advance centered by draining board, take out diameter and be not less than 150mm, the length earth pillar more than 450mm；
(2). with specific purpose tools such as wire saws, earth pillar is rebuild into the plate soil unit of diameter 150mm, length 400mm, draining board length 450mm (two ends respectively grow earth pillar 25mm), standby with filter cloth parcel；
(3). by the draining board inserted base core groove of plate soil unit one end, clamp-on the gap between draining board and core groove with rubber ring and cover cover plate, making draining board and core groove flexible sealing；
(4). trimming plate soil unit so that it is in the same size with base and engages well；
(5). removing the filter cloth outside plate soil unit, with holding film cylinder by emulsion film a set of on plate soil unit, sealing tightened by lower end and base latex elastic tape；
. installing plate soil unit fixes cylinder, latex film upper end is turned over be enclosed within sizing cylinder suitable for reading；
(7). guide sleeves on draining board upper end is overlapped, upper cover is installed, draining board extracts guide sleeves after passing cover core groove, adds cover plate by gap sealing between draining board and core groove with rubber ring；
(8). sealing tightened by latex film upper end and plate soil unit upper cover latex elastic tape；
(9). pressure chamber and top water-flowing device are installed, connect water side head and measure pipeline；
(10). pressure chamber is intake, and classification adds lateral pressure consolidation；
(11). full pressure surveys water-flowing amount after 60 minutes, 2～3 hours repeated measure water-flowing amounts in interval are until water-flowing amount measured value meets change≤5% in 6 hours；
(12). after water-flowing amount measurement result meets error requirements, adjust head and measure 4～5 measuring points continuously, make head contain draining board water flowing segment length in the head scope corresponding to hydraulic gradient i=0.5；
(13). calculate draining board water-flowing amount according to formula (1)；
(14). measuring draining board water flowing segment length when removing plate soil unit, calculate the head of corresponding i=0.5, by the dependency relation of water-flowing amount measured by different heads, the calculated water-flowing amount of interpolation is this draining board water-flowing amount result of the test.
In other words, the key property of pressure chamber proposed by the invention includes: plate soil unit applies the stable confined pressure of 350kPa by sealing latex film, ensures to seal reliable (airtight, watertight) simultaneously；The soil body in plate soil unit is stable in process of the test, will not produce obvious soil particle and run off；Plate soil unit can be carried out discharging consolidation before water-flowing amount test, make the soil body basically reach normal consolidation state under stable lateral pressure effect；The change of pressure chamber inner panel soil unit lateral pressure can manipulate flexibly；Plate soil unit is strictly isolated with pressure medium (water, air)；It is unobstructed with instrument current that what plate soil unit upper and lower side and instrument were in close contact is maintained with draining board；The water inlet of plate soil unit and water outlet two ends head are measurable and controllable.Connect water inlet end and the water side of draining board at base and upper cover perforate respectively, connect pressure-measuring pipe with flexible pipe respectively, survey and read into and out of head.All can pass through into and out of water level to regulate mouth of a river height, carry out head adjustment；The assembling of plate soil unit is workable.
The technical scheme is that the equipment of a kind of novel test draining board longitudinal flowing water measuring and complete set technology, its feature main body is by vacuum preloading model test, piling prepressing model test or directly charges the method for mud and make plate soil unit.The actual condition of draining board simulated by the compression ratio tested by Controlling model or direct bending draining board, reaches to test the longitudinal flowing water measuring of draining board when simulating the actual condition of draining board.Make test result can reflect the actual water flowing characteristic of draining board more truly.
Novel test equipment proposed by the invention and complete set technology have the following characteristics that
(1) described draining board longitudinal flowing water measuring novel test technology is a kind of geosynthetics water flowing characteristic direct measuring, it is possible to test the actual water flowing characteristic of draining board when simulating draining board actual condition；
(2) described draining board longitudinal flowing water measuring novel test technology is workable, and can realize automatic measurement；
(3) described draining board longitudinal flowing water measuring novel test technology tests the longitudinal flowing water measuring of draining board by making plate soil unit, not only solve the drawback existed in existing measuring technology, enable test result to reflect the actual water flowing characteristic of draining board more truly, also provide reliable basic data for the type selecting of draining board in draining concretion method soft soil foundation process.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is draining board longitudinal flowing water measuring novel test equipment structural map.In figure:
Water flowing outlet 1 (water receiving measurer), picks out water end (W.E.) pressure-measuring pipe 2, connects outlet tube 3 in lateral pressure, pressure chamber 4, draining board 5, soil 6, latex film 7, water (gas) 8, connect outlet tube 9 under lateral pressure, tap into water end (W.E.) pressure-measuring pipe 10, water flowing entrance 11 (connect and determine head water inlet).
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing and be embodied as case, the inventive method is described in further detail.Described herein it is embodied as case only in order to explain the present invention, is not intended to limit the present invention.
Directly charge mud and make plate soil unit and test water-flowing amount test method:
(1). by one inserted base core groove of draining board sample that length is 450mm, clamp-on the gap between draining board and core groove with rubber ring and cover cover plate, making draining board and core groove flexible sealing；
(2). bottom discharge plate water-flowing device is installed, connects water inlet pipe and water inlet end head measures pipeline；
(3). latex film lower end it is fixed on the plate soil unit base of diameter 150mm and tightens with latex elastic tape；
(4). outer installing plate soil unit sizing cylinder (cylinder internal diameter 155mm) of latex film；
. latex film upper end is turned over be enclosed within sizing cylinder suitable for reading；
(6). put draining board protection set, it is prevented that when charging mud, too pollute draining board；
(7). in the latex film that sizing cylinder supports, charge mud, charge in process and step up draining board sheath with mud height until extracting completely.Mud charges increases cylinder close to installation time suitable for reading, makes mud face exceed sizing cylinder about 2cm suitable for reading；
(8). stand 18～20 hours after mud adds 2kg weight；
(9). removing and increase cylinder, remove superelevation mud, making earth pillar height is 400mm；Plate soil unit is constituted with this；
(10). guide sleeves on draining board upper end is overlapped, upper cover is installed, draining board extracts guide sleeves after passing cover core groove, adds cover plate by gap sealing between draining board and core groove with rubber ring；
(11). sealing tightened by latex film upper end and plate soil unit upper cover latex elastic tape；
(12). pressure chamber and top water-flowing device are installed, connect water side head and measure pipeline；
(13). pressure chamber is intake, and classification adds lateral pressure consolidation；
(14). full pressure started to survey water-flowing amount after 60 minutes.According to draining board length adjustment test head before measuring so that it is meet hydraulic gradient i=0.5.
2～3 hours repeated measure water-flowing amounts in interval, record water flowing flow and water flowing time.Until water-flowing amount measured value meets change≤5% in 6 hours, last measured value is this draining board water-flowing amount result of the test.
Draining board water-flowing amount is calculated according to formula (1)；
Q water-flowing amount in formula, cm3/s；
By the water yield of draining board, cm in the V t time period3；
The time that t is experienced by V flow, s；
I hydraulic gradient, is set as 0.5.
Vacuum or piling prepressing make plate soil unit test method:
(1). carry out vacuum or piling prepressing model test by predetermined compression ratio, in the model cylinder pressed in advance centered by draining board, take out diameter and be not less than 150mm, the length earth pillar more than 450mm；
(2). with specific purpose tools such as wire saws, earth pillar is rebuild into the plate soil unit of diameter 150mm, length 400mm, draining board length 450mm (two ends respectively grow earth pillar 25mm), standby with filter cloth parcel；
(3). by the draining board inserted base core groove of plate soil unit one end, clamp-on the gap between draining board and core groove with rubber ring and cover cover plate, making draining board and core groove flexible sealing；
(4). trimming plate soil unit so that it is in the same size with base and engages well；
(5). removing the filter cloth outside plate soil unit, with holding film cylinder by emulsion film a set of on plate soil unit, sealing tightened by lower end and base latex elastic tape；
. installing plate soil unit fixes cylinder, latex film upper end is turned over be enclosed within sizing cylinder suitable for reading；
(7). guide sleeves on draining board upper end is overlapped, upper cover is installed, draining board extracts guide sleeves after passing cover core groove, adds cover plate by gap sealing between draining board and core groove with rubber ring；
(8). sealing tightened by latex film upper end and plate soil unit upper cover latex elastic tape；
(9). pressure chamber and top water-flowing device are installed, connect water side head and measure pipeline；
(10). pressure chamber is intake, and classification adds lateral pressure consolidation；
(11). full pressure surveys water-flowing amount after 60 minutes, 2～3 hours repeated measure water-flowing amounts in interval are until water-flowing amount measured value meets change≤5% in 6 hours；
(12). after water-flowing amount measurement result meets error requirements, adjust head and measure 4～5 measuring points continuously, make head contain draining board water flowing segment length in the head scope corresponding to hydraulic gradient i=0.5.
(13). calculate draining board water-flowing amount according to formula (1)；
(14). measuring draining board water flowing segment length when removing plate soil unit, calculate the head of corresponding i=0.5, by the dependency relation of water-flowing amount measured by different heads, the calculated water-flowing amount of interpolation is this draining board water-flowing amount result of the test.
Claims (7)
1. considering a draining board water-flowing amount test equipment for plate soil interaction, the plate soil unit being surrounded by latex film is arranged in water-flowing amount test pressure chamber, the water flowing outlet on water-flowing amount test pressure chamber top, water receiving measurer；The water flowing entrance of water-flowing amount test pressure chamber bottom, connects and determines head water inlet；Meanwhile, water-flowing amount test pressure chamber top, water-flowing amount test pressure chamber bottom pick out water end (W.E.) pressure-measuring pipe and water inlet end pressure-measuring pipe respectively；Outlet tube under outlet tube and lateral pressure in the external lateral pressure of pressure chamber, it is characterised in that described plate soil unit is to be provided with the soil body between latex film and draining board, and this soil body is mud；Described test pressure directly acts on latex film by pressure chamber, acts on draining board again through soil body transmission.
2. the draining board water-flowing amount test equipment of consideration plate soil interaction according to claim 1, it is characterized in that, described " the plate soil unit being surrounded by latex film is arranged in water-flowing amount test pressure chamber ", concrete set-up mode is: test being provided with base core groove bottom pressure chamber at water-flowing amount, this base core groove is inserted in one end of draining board in the plate soil unit being surrounded by latex film to be measured, clamp-on the gap between draining board and core groove with rubber ring and cover cover plate, making draining board and core groove flexible sealing.
3. the draining board water-flowing amount test equipment of consideration plate soil interaction according to claim 1, it is characterised in that the set-up mode wrapping in the latex film outside plate soil unit is: be provided with plate soil unit base bottom water-flowing amount test pressure chamber；Latex film lower end is fixed on this plate soil unit base, and tightens with latex elastic tape.
4. the draining board water-flowing amount test equipment of consideration plate soil interaction according to claim 1, it is characterised in that be provided with plate soil unit sizing cylinder outside latex film.
5. the draining board water-flowing amount test equipment of consideration plate soil interaction according to claim 1, it is characterised in that latex film upper end is turned over that to be enclosed within this sizing cylinder suitable for reading.
6. according to the draining board water-flowing amount test equipment considering plate soil interaction one of claim 1-5 Suo Shu; it is characterized in that; when employing directly charges sludge process making plate soil unit; being surrounded by outside the draining board of latex film, set is protected set; draining board is too polluted when preventing from charging mud; when mud charges end, pull out draining board protection set；
When adopting vacuum or piling prepressing model test makes plate soil unit, add cover plate by gap sealing between draining board and core groove with rubber ring.
7. use the draining board water-flowing amount considering plate soil interaction described in claim 1 to test the method for testing of equipment, it is characterised in that method of testing is divided into one of following operational approach:
One, directly charge mud make plate soil unit and test water-flowing amount test method: step is as follows,
(1). by one inserted base core groove of draining board, clamp-on the gap between draining board and core groove with rubber ring and cover cover plate, making draining board and core groove flexible sealing；
(2). bottom discharge plate water-flowing device is installed, connects water inlet pipe and water inlet end head measures pipeline；
(3). by the draining board inserted base core groove of plate soil unit one end, clamp-on the gap between draining board and core groove with rubber ring and cover cover plate, making draining board and core groove flexible sealing；
(4). at the outer installing plate soil unit sizing cylinder of latex film；
. latex film upper end is turned over be enclosed within sizing cylinder suitable for reading；
(6). put draining board protection set, it is prevented that when charging mud, too pollute draining board；
(7). in the latex film that sizing cylinder supports, charge mud, charge in process and step up draining board sheath with mud height until extracting completely.Mud charges increases cylinder close to installation time suitable for reading, makes mud face exceed sizing cylinder about 2cm suitable for reading；
(8). stand 18～20 hours after mud adds 2kg weight；
(9). removing and increase cylinder, remove superelevation mud, making earth pillar height is 400mm；
(10). guide sleeves on draining board upper end is overlapped, upper cover is installed, draining board extracts guide sleeves after passing cover core groove, adds cover plate by gap sealing between draining board and core groove with rubber ring；
(11). sealing tightened by latex film upper end and plate soil unit upper cover latex elastic tape；
(12). pressure chamber and top water-flowing device are installed, connect water side head and measure pipeline；
(13). pressure chamber is intake, and classification adds lateral pressure consolidation；
(14). full pressure starts to survey water-flowing amount after 60 minutes, according to draining board length adjustment test head before measuring so that it is meet hydraulic gradient i=0.5；
2～3 hours repeated measure water-flowing amounts in interval, record water flowing flow and water flowing time；Until water-flowing amount measured value meets change≤5% in 6 hours, last measured value is this draining board water-flowing amount result of the test；
Draining board water-flowing amount is calculated according to formula (1)；
Q water-flowing amount in formula, cm3/s；
By the water yield of draining board, cm in the V t time period3；
The time that t is experienced by V flow, s；
I hydraulic gradient, is set as 0.5；
Two, vacuum or piling prepressing make plate soil unit test method: step is as follows,
(1). carry out vacuum or piling prepressing model test by predetermined compression ratio, in the model cylinder pressed in advance centered by draining board, take out diameter and be not less than 150mm, the length earth pillar more than 450mm；
(2). with specific purpose tools such as wire saws, earth pillar is rebuild into the plate soil unit of diameter 150mm, length 400mm, draining board length 450mm, standby with filter cloth parcel；
(3). by the draining board inserted base core groove of plate soil unit one end, clamp-on the gap between draining board and core groove with rubber ring and cover cover plate, making draining board and core groove flexible sealing；
(4). trimming plate soil unit so that it is in the same size with base and engages well；
(5). with holding film cylinder by emulsion film a set of on plate soil unit, sealing tightened by lower end and base latex elastic tape；
. installing plate soil unit fixes cylinder, latex film upper end is turned over be enclosed within sizing cylinder suitable for reading；
(7). guide sleeves on draining board upper end is overlapped, upper cover is installed, draining board extracts guide sleeves after passing cover core groove, adds cover plate by gap sealing between draining board and core groove with rubber ring；
(8). sealing tightened by latex film upper end and plate soil unit upper cover latex elastic tape；
(9). pressure chamber and top water-flowing device are installed, connect water side head and measure pipeline；
(10). pressure chamber is intake, and classification adds lateral pressure consolidation；
(11). full pressure surveys water-flowing amount after 60 minutes, 2～3 hours repeated measure water-flowing amounts in interval are until water-flowing amount measured value meets change≤5% in 6 hours；
(12). after water-flowing amount measurement result meets error requirements, adjust head and measure 4～5 measuring points continuously, make head contain draining board water flowing segment length in the head scope corresponding to hydraulic gradient i=0.5.
(13). calculate draining board water-flowing amount according to formula (1)；
(14). measuring draining board water flowing segment length when removing plate soil unit, calculate the head of corresponding i=0.5, by the dependency relation of water-flowing amount measured by different heads, the calculated water-flowing amount of interpolation is this draining board water-flowing amount result of the test.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014729A (en) * | 2017-01-10 | 2017-08-04 | 中铁二院工程集团有限责任公司 | A kind of adrainage material water flowing performance testing device and test method for considering silting condition |
| CN108169103A (en) * | 2018-03-09 | 2018-06-15 | 中交天津港湾工程研究院有限公司 | A kind of experiment of plastic draining board longitudinal flowing water measuring auxiliary dress sampling device and its application method |
| CN108411954A (en) * | 2018-05-10 | 2018-08-17 | 中交四航工程研究院有限公司 | Measure the device of draining plate benging water-flowing amount and the soft-soil foundation treatment method based on the device under soil pressure |
| CN109612910A (en) * | 2019-02-22 | 2019-04-12 | 常州工程职业技术学院 | A kind of portable pervious concrete pavement device for testing permeability coefficient and test method |
| CN111945797A (en) * | 2020-09-14 | 2020-11-17 | 南京林业大学 | Test device and test method for measuring drainage capacity of drainage plate by using hoisting method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6055850A (en) * | 1997-12-24 | 2000-05-02 | Turner; Daniel R. | Multi-directional permeameter |
| US6178808B1 (en) * | 1999-08-12 | 2001-01-30 | Wisconsin Alumni Research Foundation | Apparatus and method for testing the hydraulic conductivity of geologic materials |
| CN201210065Y (en) * | 2008-01-29 | 2009-03-18 | 上海勘测设计研究院 | Longitudinal water flow test instrument for plastic drainage plate with emulsion membrane medium |
| CN103926183A (en) * | 2014-04-17 | 2014-07-16 | 中铁第四勘察设计院集团有限公司 | Testing method and device for water passing amount under normal pressure |
| CN204101277U (en) * | 2014-09-28 | 2015-01-14 | 温州际高检测仪器有限公司 | A kind of drain bar water-flowing amount tester |
-
2016
- 2016-03-25 CN CN201610180229.7A patent/CN105735376B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6055850A (en) * | 1997-12-24 | 2000-05-02 | Turner; Daniel R. | Multi-directional permeameter |
| US6178808B1 (en) * | 1999-08-12 | 2001-01-30 | Wisconsin Alumni Research Foundation | Apparatus and method for testing the hydraulic conductivity of geologic materials |
| CN201210065Y (en) * | 2008-01-29 | 2009-03-18 | 上海勘测设计研究院 | Longitudinal water flow test instrument for plastic drainage plate with emulsion membrane medium |
| CN103926183A (en) * | 2014-04-17 | 2014-07-16 | 中铁第四勘察设计院集团有限公司 | Testing method and device for water passing amount under normal pressure |
| CN204101277U (en) * | 2014-09-28 | 2015-01-14 | 温州际高检测仪器有限公司 | A kind of drain bar water-flowing amount tester |
Non-Patent Citations (1)
| Title |
|---|
| 杨明昌: "塑料排水带通水量和滤膜等效孔径检测方法的讨论", 《水利水运工程学报》 * |
Cited By (7)
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|---|---|---|---|---|
| CN107014729A (en) * | 2017-01-10 | 2017-08-04 | 中铁二院工程集团有限责任公司 | A kind of adrainage material water flowing performance testing device and test method for considering silting condition |
| CN108169103A (en) * | 2018-03-09 | 2018-06-15 | 中交天津港湾工程研究院有限公司 | A kind of experiment of plastic draining board longitudinal flowing water measuring auxiliary dress sampling device and its application method |
| CN108411954A (en) * | 2018-05-10 | 2018-08-17 | 中交四航工程研究院有限公司 | Measure the device of draining plate benging water-flowing amount and the soft-soil foundation treatment method based on the device under soil pressure |
| CN109612910A (en) * | 2019-02-22 | 2019-04-12 | 常州工程职业技术学院 | A kind of portable pervious concrete pavement device for testing permeability coefficient and test method |
| CN111945797A (en) * | 2020-09-14 | 2020-11-17 | 南京林业大学 | Test device and test method for measuring drainage capacity of drainage plate by using hoisting method |
| CN113686650A (en) * | 2021-08-11 | 2021-11-23 | 北京交通大学 | Lateral confining pressure loading equipment for undisturbed soil of sludge |
| CN113686650B (en) * | 2021-08-11 | 2023-12-19 | 北京交通大学 | Lateral confining pressure loading equipment for undisturbed soil of sludge |
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