CN107782880A - Grouting in soil mass simulation test device and its test method in a kind of multifunctional room - Google Patents
Grouting in soil mass simulation test device and its test method in a kind of multifunctional room Download PDFInfo
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- CN107782880A CN107782880A CN201710988965.XA CN201710988965A CN107782880A CN 107782880 A CN107782880 A CN 107782880A CN 201710988965 A CN201710988965 A CN 201710988965A CN 107782880 A CN107782880 A CN 107782880A
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- 239000002689 soil Substances 0.000 title claims abstract description 116
- 238000012360 testing method Methods 0.000 title claims abstract description 81
- 238000004088 simulation Methods 0.000 title claims abstract description 29
- 238000010998 test method Methods 0.000 title claims abstract description 5
- 239000002002 slurry Substances 0.000 claims abstract description 176
- 238000001914 filtration Methods 0.000 claims abstract description 39
- 238000009792 diffusion process Methods 0.000 claims abstract description 31
- 238000007569 slipcasting Methods 0.000 claims abstract description 31
- 230000000694 effects Effects 0.000 claims abstract description 28
- 238000002347 injection Methods 0.000 claims abstract description 25
- 239000007924 injection Substances 0.000 claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 230000002787 reinforcement Effects 0.000 claims abstract description 11
- 238000002474 experimental method Methods 0.000 claims abstract description 10
- 238000003825 pressing Methods 0.000 claims abstract description 10
- 230000008859 change Effects 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 27
- 239000004568 cement Substances 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 11
- 230000003204 osmotic effect Effects 0.000 claims description 11
- 238000005056 compaction Methods 0.000 claims description 10
- 239000004744 fabric Substances 0.000 claims description 10
- 239000011440 grout Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 7
- 238000011160 research Methods 0.000 claims description 7
- 239000008187 granular material Substances 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 5
- 229920002472 Starch Polymers 0.000 claims description 3
- 238000000280 densification Methods 0.000 claims description 3
- 235000019698 starch Nutrition 0.000 claims description 3
- 239000008107 starch Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000001764 infiltration Methods 0.000 claims 1
- 230000008595 infiltration Effects 0.000 claims 1
- 239000008188 pellet Substances 0.000 claims 1
- 241000628997 Flos Species 0.000 abstract description 4
- 238000005192 partition Methods 0.000 description 7
- 230000035515 penetration Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009533 lab test Methods 0.000 description 3
- 241000537371 Fraxinus caroliniana Species 0.000 description 2
- 235000010891 Ptelea trifoliata Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Analytical Chemistry (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Medicinal Chemistry (AREA)
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses grouting in soil mass simulation test device and its test method in a kind of multifunctional room, the experimental rig includes slip casting mechanism, test chamber and the pressure control mechanism being sequentially connected；Described test chamber forms by test flume and with the top cover that test flume is closely flexibly connected, and seal cavity is divided into multi-chamber structure by vertically arranged dismountable dividing plate, and each cavity bottom is provided with floss hole.The present invention utilizes the dismounting of chamber space bar, dress to change unidirectional, the lateral slurries diffusion grouting test for realizing slurries, and the multinomial slurry characteristics test simulation experiment such as slurries filter pressing grouting test, filtration experiment, under the conditions of quickly can accurately obtaining various soil mass grading, characterisitic parameter in each ratio of mud slurries diffusion process, and then rationally assess the soil body can injection and reinforcement effect, it is simple to operate, and be easy to analyze.
Description
Technical field
The present invention relates to slip casting simulation experiment device technical field, especially belongs to grouting in soil mass mould in a kind of multifunctional room
Intend device and its implementation.
Background technology
With injecting paste material science research deeply and slurry injection technique gradual perfection, engineering slurry injection technique civil engineering,
It is widely used in the every field such as mining, tunnel, bridge, highway, water power.Slurry injection technique particularly in the soil body,
Through the important means as soil stabilization, ground loss compensation, in works such as basement process, strengthening of foundation, shield tunnel constructions
It is widely used in journey, and serves very important effect.
To the design of slip casting dependent on being fully realized to slurries diffusion property and reinforcement effect in engineering.Slurries in engineering
Diffusion it is influenced by many factors, due to the soil body can injection it is different, different degrees of filter be present in slurries diffusion process
The problems such as effect of crossing, press filtration effect, directly affect to slurries diffusion and the reinforcing of the soil body.Therefore, slurries diffusion property is recognized
Know, and the filtration in slurries diffusion process, the reasonable of filter pressing are effectively assessed, be to carry out grouting design and construction
Key, and laboratory test is to carry out the important means of above-mentioned analysis.
The laboratory test simulation of grouting in soil mass has become the important method of research engineering problem, and existing apparatus is more for spy
Determine slip casting problem development, function phase is to single, and unifunctional slurry filling imitation device can not meet that slurries diffusion property is ground
The demand studied carefully, the A of Chinese patent CN 105527384 disclose a kind of grouting simulation test device and its test method, the device
Including compression system and slip casting permeability apparatus, but due to the limitation of the experimental rig device structure, there is test limitation, only
It is directed to single experimental test, it is difficult to the diffusion of concentrated expression slurries, reinforcement effect characteristic.
, it is necessary to which obtaining engineering grouting parameter according to the specific soil body and slip casting condition carries out grouting design in engineer applied
And assessment, it is also desirable to a kind of multi-functional grouting device for conducting a research and evaluating for engineering problem, therefore, with reference to actual slip casting
Technique and technology, develop the diffusion of concentrated expression slurries, reinforcement effect characteristic and grouting process, predict the multi-functional of slip casting effect
Slurry filling imitation device, obtain the relevant parameter testing experiment such as diffusion, filtration and reinforcement effect characteristic during slurries slip casting
As a result, there is important guiding effect and realistic meaning to grouting in soil mass practice of engineering design and construction.
The content of the invention
The purpose of the present invention is to provide grouting in soil mass simulation test device and its implementation in a kind of multifunctional room,
To reach the multi-functional demand for a tractor serves several purposes for realizing slurry filling imitation device, there is the purpose for the precision for improving test data.
Grouting in soil mass simulation test device in a kind of multifunctional room provided by the present invention, it is characterised in that including successively
Slip casting mechanism, test chamber and the pressure control mechanism of connection, wherein：
Described test chamber is arranged on chassis, and it is a seal cavity, seal cavity by test flume and with experiment
The top cover composition that groove is closely flexibly connected, seal cavity are divided into multi-chamber structure by vertically arranged dismountable dividing plate, institute
The multi-chamber structure stated includes middle main chamber, and is symmetrically distributed in second to the 4th chamber on main chamber both sides；Main chamber
The bottom of room is provided with slurries or gas emitting valve, and the bottom of the second to the 4th chamber is provided with cascading water mouth；It is required that top cover is flexibly connected
It can guarantee that and do not opened by the gas top in seal cavity when on test flume.
Described slip casting mechanism includes surge tank, and surge tank is connected by the top of grouting pipe and main chamber；In slip casting
Pipeline is provided with first pressure table and drain pulp valve；
Described pressure control mechanism includes air compressor machine and the stable-pressure device being connected with air compressor machine, pressure control mechanism pass through gas
Pipeline is connected with the top of main chamber, and second pressure gauge and pressure regulator valve are provided with gas pipeline.Stable-pressure device can ensure into
Enter the stable gas pressure in main chamber.
Dividing plate that dividing plate, the elastic filter membrane material of the filter septum including metal material of the present invention are made and thoroughly slurry filter screen every
Three kinds of structures of plate.
For the ease of from main chamber's slip casting and being passed through gas, described top cover is one with raised top cover, lug boss
Divide the top just at main chamber；
For the ease of dismantling dividing plate, bottom plate, top cover lower surface and front and rear cover in test flume are respectively equipped with neck, every
Plate is arranged in seal cavity by neck.
For the ease of experiment, second to the 4th chamber spaced set of main chamber's the right and left.
The close best mode that is flexibly connected of top cover of the present invention and test flume is：In all around end cap of test flume
Four round angles set upper bolt hole, and top cover is connected on test flume with bolt by bolt hole.The advantages of so doing not only can be with
Being flexibly connected for top cover and test flume is realized, and top cover is opened by external force top during avoiding experiment.
A kind of implementation method based on grouting in soil mass simulation test device in multifunctional room provided by the present invention, its feature
Be, it include the lateral slip casting simulation of slurries unidirectional grout simulated test, slurries and filtration attribute testing, slurries press filtration effect and
Compaction tests three kinds of situations, wherein：
The first situation：Slurries unidirectional grout simulated test, specific method are:
1.1：The top cover of seal cavity is opened, the dividing plate of main chamber's the right and left is selected into metal partion (metp), under main chamber
Transparent liquid filter cloth is placed by side, a main chamber for being used for testing is formd, by the different soil bodys according to default compactness and height
It is required that being placed into main chamber, the soil body is highly generally (1/3-1/2) of main chamber's height, then reseals and is pushed up in connection
Lid, and then realize the assembling of soil body unidirectional grout slurries diffusion simulations device；
1.2：The slurries of preset concentration are adjusted by surge tank, close the vent valves of main chamber bottom, open Grouting Pipe
On drain pulp valve, the slurries in surge tank are pressed into main chamber, by first pressure table come control injection main chamber in
Grouting amount, with the injection of slurries, unnecessary gas releases main chamber by gas pipeline in main chamber；
1.3：When grouting amount reaches requirement, drain pulp valve is closed, the vent valves of main chamber bottom is opened, passes through control
The air pressure of air compressor machine loads to main chamber's slurries so that slurries in the presence of air pressure diffusion to the soil body
In, top cover is opened after loaded, studies the spread condition of slurries；
1.4：By changing grouting pressure, the slurries ratio of mud, cement granularity, slurry flow rate, soil body grading, soil body penetration system
Number or soil body compactness, according to above-mentioned 1.1 and 1.3 method test of many times, so as to obtain different grouting pressures, the slurries ratio of mud,
The uni-directional diffusion characteristic of slurries under the conditions of cement granularity, slurry flow rate, soil body grading, soil body osmotic coefficient or soil body compactness
Research；
Second of situation：The lateral slip casting simulation of slurries and filtration attribute testing, specific method are：
2.1：The top cover of seal cavity is opened, by the dividing plate in test chamber from the dividing plate that can starch filter screen thoroughly, in main chamber
Transparent liquid filter cloth is placed with below the second to the 4th chamber at left and right sides of room and main chamber, closes the discharge of main chamber bottom
The cascading water mouth of valve and the second to the 4th cavity bottom, by the soil body of the variable grain grading configured according to default closely knit
Degree and requirement for height are placed individually into the second to the 4th chamber, then reseal connection upper top cover, and then realize slurries side
Assembling to slurry filling imitation device；
2.2：The slurries of preset concentration are adjusted by surge tank, open the drain pulp valve in Grouting Pipe, utilize the gas in the external world
Pressure input, the slurries in surge tank are pressed into main chamber, controlled by the air pressure of first pressure table in injecting chamber
Grouting amount, with the injection of slurries, unnecessary gas releases main chamber by gas pipeline in main chamber；
2.3：When grouting amount reaches requirement, drain pulp valve is closed, only opens rushing down below the second to the 4th chamber successively
One of head piece, by controlling the air pressure of air compressor machine to load the slurries in main chamber so that slurries are in air
In the presence of pressure in the soil body of the lateral chamber of diffusion to second to the 4th, by studying the second to the 4th cascading water mouth successively
The concentration of slurry of pulp, analyze the filtration characteristic in slurries diffusion process；Top cover is opened after loaded, takes out the slip casting soil body,
Study reinforcement effect of the spread condition to the soil body of slurries；
2.4：By changing grouting pressure, the slurries ratio of mud, cement granularity, slurry flow rate, soil body grading, soil body penetration system
Number or soil body compactness, according to above-mentioned 2.1st and 2.3 method test of many times, so as to obtain different grouting pressures, slurry water ash
Than, under the conditions of cement granularity, slurry flow rate, soil body grading, soil body osmotic coefficient or soil body compactness to slurries sideways diffusion and
The influence of press filtration；
The third situation：Slurries press filtration effect and compaction experiment, specific method are：
3.1：The top cover of seal cavity is opened, the dividing plate that main chamber and second chamber share is selected into elastic filter membrane material
The dividing plate of (cement granules are impermeable, and only water can pass through), another piece of dividing plate of second chamber is changed into metal partion (metp), in main chamber
Transparent liquid filter cloth is placed in room and second chamber bottom, closes the vent valves of main chamber bottom and the cascading water of second chamber bottom
Mouthful, the soil body of the variable grain grading configured is placed into second chamber, then reseals connection upper top cover, and then realize
The assembling of filter pressing slurry filling imitation device；
3.2：The slurries of preset concentration are adjusted by surge tank, open the drain pulp valve in Grouting Pipe, utilize the gas in the external world
Pressure input, the slurries in surge tank are pressed into main chamber, are controlled by the air pressure of first pressure table in injection main chamber
Grouting amount, with the injection of slurries, unnecessary gas releases main chamber by gas pipeline in main chamber；
3.3：When grouting amount reaches requirement, drain pulp valve is closed, the cascading water mouth of second chamber bottom is opened, passes through control
The air pressure of air compressor machine loads to slurries in main chamber so that the water in slurries laterally expands in the presence of air pressure
It is scattered in the soil body, cement granules occur gradually to filter out, the flow velocity and main chamber of the cascading water mouth pulp by studying second chamber bottom
The press filtration characteristic of the Changeement slurries of indoor air pressure；Top cover is opened after loaded, the press filtration soil body is taken out, passes through power
To the reinforcement effect of the soil body under the conditions of analysis of experiments press filtration and densification；
3.4：By changing grouting pressure, the slurries ratio of mud, cement granularity, slurry flow rate, soil body grading, soil body penetration system
Number or soil body compactness, according to above-mentioned 3.1-3.3 method test of many times, so as to obtain different grouting pressures, the slurries ratio of mud,
To the influence of slurries press filtration effect and soil body compaction under the conditions of soil body osmotic coefficient, soil body compactness.
In order that test effect is more obvious, before experiment, the dividing plate between second chamber and the 3rd chamber can be dismantled,
Another piece of dividing plate of the 3rd chamber changes metal partion (metp) into, and second chamber and the 3rd chamber are synthesized into a big chamber.
The positive effect of the present invention is：
1st, the present invention is by factors such as concentration of slurry, grouting pressures in slip casting mechanism, pressure control mechanism controls test chamber,
Slurries action rule in laboratory's cavity under simulation differential responses ambient condition, makes experimental implementation more accurate, experimental data
More confidence level, design and research for grouting in soil mass engineering provide important support.
2nd, the present invention can carry out multinomial different moulds by changing the material of dividing plate and the function of dividing plate, and dismounting dividing plate
Intend the conversion of experimental rig, effectively improve operating efficiency, grouting parameter survey can be carried out according to varying environment, different slip casting factors
Examination, it is simple to operate, and be easy to analyze.
In summary, the present invention is simple to operate, practical reliable, can realize that slurry-soil interaction is unidirectional, lateral slurries expand
Grouting test, and the multinomial slurry characteristics test simulation experiment such as slurries filtration, filter pressing grouting test are dissipated, is had more
Function, the good effect of test data precision is improved, simulate a bar feasible way is provided for the laboratory test of grouting in soil mass
Footpath
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of shutter embodiment of the present invention；
Fig. 3 is the structural representation of test flume of the present invention, and drive end bearing bracket is eliminated in figure；
Fig. 4 is the example structure schematic diagram that the present invention is applied to slurries unidirectional grout simulated test；
Fig. 5 is the example structure schematic diagram that the present invention is applied to the lateral slip casting simulation of slurries and filtration attribute testing；
Fig. 6 is the example structure schematic diagram that the present invention is applied to slurries press filtration effect and compaction is tested.
In figure：
A-slurries inlet, B-air pressure input port, C-slurries floss hole；1.-main chamber, 2.-second chamber,
3. the-the three chamber, 4.-the 4th chamber；I-first partition, II-second partition, the III-the three dividing plate；
1-surge tank, 2-first pressure table, 3-Grouting Pipe, 4-drain pulp valve, 5-clip, 6-air compressor machine, 7-steady
Pressure device, 8-air injection pipe, 9-pressure regulator valve, 10-second pressure gauge, 11-top plate, 12-pressing plate, 13-fixing bolt, 14-
Bottom plate, 15-vent valves, 16-support frame, 17-sealing strip, 18-neck, 19-21-the second to the 4th cascading water mouth, 22-
Transparent liquid filter cloth.
Embodiment
Such as Fig. 1-3, grouting in soil mass analogue means in multifunctional room of the invention, including be sequentially connected slip casting mechanism, examination
Chamber and pressure control mechanism are tested, wherein：
Described test chamber is a seal cavity, what seal cavity was closely flexibly connected by test flume and with test flume
Top cover is formed, and test flume is made up of bottom plate 14 and the side plate of border (see Fig. 3), and the lower section of bottom plate 14 is provided with support frame 16, described
Top cover is one, and it forms one by the raised top plate 11 of centre and the pressing plate 12 on both sides with raised top cover, pressing plate 12 with
And bottom plate 14 is connected by bolt 13, neck 18 is offered on bottom plate 14, top cover and front and rear cover, seal cavity passes through
The dividing plate being arranged in neck 18 is divided into multi-chamber structure, and separator edge is provided with rubber packing bar 17, prevention slurries filtration
During leakage problem.1. described multi-chamber structure includes middle main chamber, and be symmetrically distributed in main chamber 1. two
The second of side to the 4th chamber 2. -4.；The bottom of main chamber 1. is provided with slurries or gas emitting valve door 15, the second to the 4th chamber
Bottom be provided with the second to the 4th cascading water mouth 19~21；
Described slip casting mechanism includes surge tank 1, and the left part of surge tank 1 is provided with slurries inlet A, and upper end is provided with gas
Press input port B, bottom is provided with slurries floss hole C, the inside of the surge tank including slurries injection channel, pressure channel and
Slurries discharge-channel, slurries injection channel, pressure channel and slurries discharge-channel respectively with left part slurries inlet A, on
End air pressure input port B and the connection of bottom slurries floss hole, are provided with first pressure table 2 at the B of air pressure input port, described
Grouting Pipe 3 on drain pulp valve 4 is installed, 1. surge tank 1 is connected by Grouting Pipe 3 and main chamber, Grouting Pipe 3 can be multistage
Demountable, pass through the assembly and connection of clip 5.
Described pressure control mechanism includes air compressor machine 6 and the stable-pressure device 7 being connected with air compressor machine 6, pressure control mechanism pass through
Top of the air injection pipe 8 with main chamber 1. is connected, and second pressure gauge 10 and pressure regulator valve 9 are provided with air injection pipe 8.
The dividing plate and there is filtering work(that dividing plate, the elastic filter membrane material that the filter septum of the present invention includes metal material are made
Three kinds of structures of dividing plate of energy.
It will be seen from figure 1 that top of the top plate 11 of the top cover in embodiment just at main chamber；The pressing plate 12 on both sides
Just at the second-the four chamber 2. -4. top.
The method of grouting in soil mass simulation in multifunctional room is carried out using apparatus of the present invention includes the simulation examination of slurries unidirectional grout
Test, slurries lateral slip casting simulation and filtration attribute testing, slurries press filtration effect and compaction test three kinds of situations (see Fig. 4-
6), wherein：
The first situation：Slurries unidirectional grout simulated test, specific method are:
1.1：The top cover of seal cavity is opened, the first partition I of main chamber's 1. the right and left is selected into metal partion (metp), in master
1. transparent liquid filter cloth 22 is placed in lower section to chamber, a main chamber for being used for testing is formd, by the different soil bodys according to default close
Solidity and requirement for height are placed into that main chamber is 1. interior, and the soil body is highly generally (1/3-1/2) of main chamber's height, then again close
Envelope connection upper top cover, and then realize the assembling of soil body unidirectional grout slurries diffusion simulations device；
1.2：The slurries of preset concentration are adjusted by surge tank 1, close the vent valves 15 of main chamber 1. bottom, open note
The drain pulp valve 4 on pipe 3 is starched, it is 1. interior that the slurries in surge tank 1 are pressed into main chamber, and note is controlled by first pressure table 2
Enter main chamber's 1. interior grouting amount, with the injection of slurries, main chamber 1. in unnecessary gas main chamber is released by gas pipeline
Room is 1.；
1.3：When grouting amount reaches requirement, drain pulp valve 4 is closed, the vent valves 15 of main chamber 1. bottom is opened, leads to
Cross control air compressor machine 6 air pressure to main chamber, 1. interior slurries load so that slurries ooze in the presence of air pressure
It is diffused into thoroughly in the soil body, top cover is opened after loaded, studies the spread condition of slurries；
1.4：By changing grouting pressure, the slurries ratio of mud, cement granularity, slurry flow rate, soil body grading, soil body penetration system
Number or soil body compactness, according to above-mentioned 1.1 and 1.3 method test of many times, so as to obtain different grouting pressures, the slurries ratio of mud,
The uni-directional diffusion characteristic of slurries under the conditions of cement granularity, slurry flow rate, soil body grading, soil body osmotic coefficient or soil body compactness
Research；
Second of situation：The lateral slip casting simulation of slurries and filtration attribute testing, specific method are：
2.1：The top cover of seal cavity is opened, by the first partition I in test chamber, the dividing plate III of second partition II and the 3rd
From the dividing plate that can starch filter screen thoroughly, main chamber 1. and main chamber 1. the left and right sides the second to the 4th chamber 2. -4. lower section
Be placed with transparent liquid filter cloth 22, close main chamber 1. bottom the chamber of vent valves the 15 and second to the 4th 2. -4. bottom
Second to the 4th cascading water mouth 19-21, by the soil body of the variable grain grading configured according to default compactness and requirement for height
Be placed individually into the second to the 4th chamber 2.-it is 4. interior, then reseal connection upper top cover, and then realize the lateral slip casting mould of slurries
Intend the assembling of device；
2.2：The slurries of preset concentration are adjusted by surge tank 1, open the drain pulp valve 4 in Grouting Pipe 3, utilize the external world
Air pressure inputs, and the slurries in surge tank 1 are pressed into main chamber is 1. interior, controls injection to lead by the air pressure of first pressure table 2
Chamber 1. interior grouting amount, with the injection of slurries, main chamber 1. in unnecessary gas 1. main chamber is released by gas pipeline；
2.3：When grouting amount reaches requirement, close drain pulp valve 4, only open successively the second to the 4th chamber 2. -4. under
Second to the 4th cascading water mouth 19~21 of side one of them, by controlling the air pressure of air compressor machine 6 to main chamber's 1. interior slurry
Liquid is loaded so that slurries in the presence of air pressure the lateral chamber of diffusion to second to the 4th 2.-soil body 4.
In, by study successively second to the pulp of the 4th cascading water mouth 19~21 concentration of slurry, analyze slurries diffusion process in filtration
Characteristic；Top cover is opened after loaded, takes out the slip casting soil body, studies reinforcement effect of the spread condition to the soil body of slurries；
2.4：By changing grouting pressure, the slurries ratio of mud, cement granularity, slurry flow rate, soil body grading, soil body penetration system
Number or soil body compactness, according to above-mentioned 2.1st and 2.3 method test of many times, so as to obtain different grouting pressures, slurry water ash
Than, under the conditions of cement granularity, slurry flow rate, soil body grading, soil body osmotic coefficient or soil body compactness to slurries sideways diffusion and
The influence of press filtration；
The third situation：Slurries press filtration effect and compaction experiment, specific method are：
3.1：Open seal cavity top cover, by first partition I from elastic filter membrane material (cement granules are impermeable,
Only water can pass through) dividing plate, change second partition II into metal partion (metp), main chamber 1. with second chamber 2. bottom place transparent liquid
Filter cloth 22, the second cascading water mouth 19 of the main chamber 1. vent valves 15 of bottom and second chamber 2. bottom is closed, will be configured
The soil body of variable grain grading be placed into second chamber 2., then reseal connection upper top cover, and then realize filter pressing
The assembling of slurry filling imitation device；
3.2：The slurries of preset concentration are adjusted by surge tank 1, open the drain pulp valve 4 in Grouting Pipe 3, utilize the external world
Air pressure inputs, and the slurries in surge tank 1 are pressed into main chamber is 1. interior, controls injection to lead by the air pressure of first pressure table 2
Chamber 1. interior grouting amount, with the injection of slurries, main chamber 1. in unnecessary gas 1. main chamber is released by gas pipeline；
3.3：When grouting amount reaches requirement, drain pulp valve 4 is closed, opens the second cascading water mouth of second chamber 2. bottom
19, by controlling the air pressure of air compressor machine 6, to main chamber, 1. interior slurries load so that the water in slurries is in air pressure
In the presence of sideways diffusion into the soil body, cement granules occur gradually filter out, by the cascading water mouth 19 for studying second chamber bottom
The press filtration characteristic of the Changeement slurries of air pressure in the flow velocity of pulp and main chamber 1.；Top cover is opened after loaded,
The press filtration soil body is taken out, is analyzed by mechanical test under the conditions of press filtration and densification to the reinforcement effect of the soil body；
3.4：By changing grouting pressure, the slurries ratio of mud, cement granularity, slurry flow rate, soil body grading, soil body penetration system
Number or soil body compactness, according to above-mentioned 3.1-3.3 method test of many times, so as to obtain different grouting pressures, the slurries ratio of mud,
To the influence of slurries press filtration effect and soil body compaction under the conditions of soil body osmotic coefficient, soil body compactness.
Claims (5)
- A kind of 1. grouting in soil mass simulation test device in multifunctional room, it is characterised in that including be sequentially connected slip casting mechanism, examination Chamber and pressure control mechanism are tested, wherein：Described test chamber is arranged on chassis, and it is a seal cavity, and seal cavity is tight by test flume and with test flume The top cover composition of close flexible connection, seal cavity is divided into multi-chamber structure by vertically arranged dismountable dividing plate, described Multi-chamber structure includes middle main chamber, and is symmetrically distributed in second to the 4th chamber on main chamber both sides；Main chamber Bottom is provided with slurries or gas emitting valve, and the bottom of the second to the 4th chamber is provided with cascading water mouth；It is required that top cover is movably connected in examination It can guarantee that and do not opened by the gas top in seal cavity when on check of foundation subsoil.Described slip casting mechanism includes surge tank, and surge tank is connected by the top of grouting pipe and main chamber；In grouting pipe It is provided with first pressure table and drain pulp valve；Described pressure control mechanism includes air compressor machine and the stable-pressure device being connected with air compressor machine, pressure control mechanism pass through gas pipeline Connected with the top of main chamber, second pressure gauge and pressure regulator valve are provided with gas pipeline.
- 2. grouting in soil mass simulation test device in multifunctional room as claimed in claim 1, it is characterised in that described top cover is One with raised top cover, top of the bossing just at main chamber；
- 3. grouting in soil mass simulation test device in multifunctional room as claimed in claim 1, it is characterised in that at the bottom of test flume Corresponding neck is respectively equipped with plate, top cover and front and rear cover, dividing plate is arranged in seal cavity by neck.
- 4. grouting in soil mass simulation test device in multifunctional room as claimed in claim 1, it is characterised in that main chamber or so two The second of side is to the 4th chamber spaced set.
- 5. the test method of grouting in soil mass simulation test device in a kind of multifunctional room as described in claim 1-4 is any, its It is characterised by, it includes the lateral slip casting simulation of slurries unidirectional grout simulated test, slurries and filtration attribute testing and slurries press filtration Effect and compaction test three kinds of situations, wherein：The first situation：Slurries unidirectional grout simulated test, specific method are:1.1：The top cover of seal cavity is opened, the dividing plate of main chamber's the right and left is selected into metal partion (metp), put below main chamber Transparent liquid filter cloth is put, a main chamber for being used for testing is formd, by the different soil bodys according to default compactness and requirement for height It is placed into main chamber, the soil body is highly generally (1/3-1/2) of main chamber's height, then reseals connection upper top cover, enters And realize the assembling of soil body unidirectional grout slurries diffusion simulations device；1.2：The slurries of preset concentration are adjusted by surge tank, close the vent valves of main chamber bottom, are opened in Grouting Pipe Drain pulp valve, the slurries in surge tank are pressed into main chamber, the note in injection main chamber is controlled by first pressure table Slurry amount, with the injection of slurries, unnecessary gas releases main chamber by gas pipeline in main chamber；1.3：When grouting amount reaches requirement, drain pulp valve is closed, the vent valves of main chamber bottom are opened, by controlling pneumatics The air pressure of machine loads to main chamber's slurries so that slurries in the presence of air pressure diffusion into the soil body, Top cover is opened after loaded, studies the spread condition of slurries；1.4：By change grouting pressure, the slurries ratio of mud, cement granularity, slurry flow rate, soil body grading, soil body osmotic coefficient or Soil body compactness, according to above-mentioned 1.1 and 1.3 method test of many times, so as to obtain different grouting pressures, the slurries ratio of mud, cement The uni-directional diffusion characteristic of slurries under the conditions of granularity, slurry flow rate, soil body grading, soil body osmotic coefficient or soil body compactness is ground Study carefully；Second of situation：The lateral slip casting simulation of slurries and filtration attribute testing, specific method are：2.1：Open the top cover of seal cavity, by the dividing plate in test chamber from the dividing plate of filter screen can be starched thoroughly, main chamber with And transparent liquid filter cloth is placed with below second at left and right sides of main chamber to the 4th chamber, close the vent valves of main chamber bottom And second to the 4th cavity bottom cascading water mouth, by the soil body of the variable grain grading configured according to default compactness and Requirement for height is placed individually into the second to the 4th chamber, then reseals connection upper top cover, and then realizes that slurries are laterally noted Starch the assembling of analogue means；2.2：The slurries of preset concentration are adjusted by surge tank, open the drain pulp valve in Grouting Pipe, the air pressure using the external world is defeated Enter, the slurries in surge tank are pressed into main chamber, the slip casting in injecting chamber is controlled by the air pressure of first pressure table Amount, with the injection of slurries, unnecessary gas releases main chamber by gas pipeline in main chamber；2.3：When grouting amount reaches requirement, drain pulp valve is closed, only opens the cascading water mouth below the second to the 4th chamber successively One of them, by controlling the air pressure of air compressor machine to load the slurries in main chamber so that slurries are in air pressure In the presence of the lateral chamber of diffusion to second to the 4th the soil body in, by studying the second to the 4th cascading water mouth pulp successively Concentration of slurry, analyze slurries diffusion process in filtration characteristic；Top cover is opened after loaded, takes out the slip casting soil body, research Reinforcement effect of the spread condition of slurries to the soil body；2.4：By change grouting pressure, the slurries ratio of mud, cement granularity, slurry flow rate, soil body grading, soil body osmotic coefficient or Soil body compactness, according to above-mentioned 2.1st and 2.3 method test of many times, so as to obtain different grouting pressures, the slurries ratio of mud, water To slurries sideways diffusion and press filtration under the conditions of mud pellet degree, slurry flow rate, soil body grading, soil body osmotic coefficient or soil body compactness Influence；The third situation：Slurries press filtration effect and compaction experiment, specific method are：3.1：The top cover of seal cavity is opened, main chamber can not be oozed with the dividing plate that second chamber shares from cement granules Thoroughly, the only dividing plate of the permeable elastic filter membrane material material of water, changes another piece of dividing plate of second chamber into metal partion (metp), in master Transparent liquid filter cloth is placed in chamber and second chamber bottom, closes the vent valves of main chamber bottom and the cascading water of second chamber bottom Mouthful, the soil body of the variable grain grading configured is placed into second chamber, then reseals connection upper top cover, and then realize The assembling of filter pressing slurry filling imitation device；3.2：The slurries of preset concentration are adjusted by surge tank, open the drain pulp valve in Grouting Pipe, the air pressure using the external world is defeated Enter, the slurries in surge tank are pressed into main chamber, the note in injection main chamber is controlled by the air pressure of first pressure table Slurry amount, with the injection of slurries, unnecessary gas releases main chamber by gas pipeline in main chamber；3.3：When grouting amount reaches requirement, drain pulp valve is closed, the cascading water mouth of second chamber bottom is opened, by controlling pneumatics The air pressure of machine loads to slurries in main chamber so that water in the slurries sideways diffusion in the presence of air pressure arrives In the soil body, cement granules occur gradually to filter out, by the flow velocity of the cascading water mouth pulp of studying second chamber bottom and main chamber Air pressure Changeement slurries press filtration characteristic；Top cover is opened after loaded, the press filtration soil body is taken out, is tried by mechanics Test under the conditions of analysis press filtration and densification to the reinforcement effect of the soil body；3.4：By change grouting pressure, the slurries ratio of mud, cement granularity, slurry flow rate, soil body grading, soil body osmotic coefficient or Soil body compactness, according to above-mentioned 3.1-3.3 method test of many times, so as to obtain different grouting pressures, the slurries ratio of mud, the soil body To the influence of slurries press filtration effect and soil body compaction under the conditions of infiltration coefficient, soil body compactness.
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| CN109030317A (en) * | 2018-09-05 | 2018-12-18 | 中山大学 | A kind of impervious material osmotic grouting laboratory testing rig |
| WO2021013186A1 (en) * | 2019-07-24 | 2021-01-28 | 中南大学 | Test device and test method for simulating earth-filling and grouting |
| CN114279612A (en) * | 2022-03-08 | 2022-04-05 | 华东交通大学 | System and method for testing frictional resistance of jacking pipe |
| CN114354408A (en) * | 2021-12-29 | 2022-04-15 | 三峡大学 | Side wall grouting multi-index detection device and detection method |
| CN114814168A (en) * | 2022-04-26 | 2022-07-29 | 昆明理工大学 | Testing device for reinforcing fractured rock test piece through microbial grouting |
| CN115015480A (en) * | 2022-05-30 | 2022-09-06 | 太原理工大学 | Experimental device and method for simulating grouting pressure environment |
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| CN115015480B (en) * | 2022-05-30 | 2024-07-30 | 太原理工大学 | Experimental device and method for simulating grouting pressure environment |
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