CN107059960A - A kind of indoor full automatic simulates the experimental rig of cement mixing method - Google Patents
A kind of indoor full automatic simulates the experimental rig of cement mixing method Download PDFInfo
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- CN107059960A CN107059960A CN201710455260.1A CN201710455260A CN107059960A CN 107059960 A CN107059960 A CN 107059960A CN 201710455260 A CN201710455260 A CN 201710455260A CN 107059960 A CN107059960 A CN 107059960A
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- drilling rod
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- grouting
- mouth spray
- mixing method
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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
-
- 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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/10—Miscellaneous comprising sensor means
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses the experimental rig that a kind of indoor full automatic simulates cement mixing method, include drilling rod, support, drill bit, first motor, second motor, filling system, control system and chamber, wherein drilling rod is erected at the upper end of chamber by branch, drilling rod is hollow, drill bit is assemblied in the lower end of drilling rod, first motor and the second motor are respectively provided at the upper and lower part of drilling rod, first motor drives drilling rod to be lifted, second motor drives drilling rod to be rotated, filling system passes through Grouting Pipe and the intracavity inter-connection of drilling rod, the drilling rod on drill bit top is provided with mouth spray, the slurries of injection are sprayed by the inner chamber of Grouting Pipe and drilling rod bottom from mouth spray in filling system, control system and the first motor, second motor is connected with filling system, beneficial effect：Pile quality is good, uniformity is high, good economy performance and being capable of intelligentized control method.
Description
Technical field
The present invention relates to a kind of indoor experimental rig, more particularly to a kind of indoor full automatic simulation cement mixing method
Experimental rig.
Background technology
At present, cement mixing method is a kind of effective ways for reinforcing saturation Soft Clay Foundation.It generally uses cement
As curing agent, weak soil and curing agent are forced to mix in ground deep by special deep-layer stirring machinery, weak soil is hardened
And improve foundation strength.Since 1970s, cement mixing method is cheap and easily operated etc. special due to its
Point is gradually applied in terms of foundation stabilization, bank protection and antiseepage, and various new cement mixing methods are also continued to bring out, this method
Because good economic benefit and social benefit are just being widely used.
At present, the main method of research cement mixing method has three kinds of field test, numerical simulation and indoor model test.
Field test is to study most direct, the most reliable method of cement mixing method bearing capacity characteristic, and is checking room
Indoors modeling test and the best means of numerical analysis, but because the test period is longer, it is necessary to substantial contribution is put into, and stratum bar
Part is complicated, and work progress is not easily controlled, can only obtain pile foundation in small range area feature, be difficult to obtain regular conclusion.Number
Value analysis is a kind of easy and cheap method for studying cement mixing method stress deformation characteristic, but its precision is main
Dependent on interaction between relevant material parameters, selected theoretical model, each several part etc. and the identical journey of truth
Degree, thus its be affected by human factors it is larger.Indoor model test more accurately can set and control the native material of boundary condition, stake
Expect characteristic, can also be to problem analysis with stronger specific aim and purpose, model test when studying interaction between pile and soil
Simplified, catch principal contradiction, give up secondary contradiction, compared with field test, more regular things can be obtained.Model is tried
Numerical simulation analysis can also be verified by testing.Therefore, a kind of model test method of lab simulation cement mixing method how is found
It is key issue urgently to be resolved hurrily at present.
(the He'nan University's Master's thesis of document 1《Areas formerly flooded by the Huanghe River is modified strength core stirring model test of pile and analysis》, Huang Xiaoliang,
In June, 2013) it refer to the experimental rig and method of a kind of lab simulation cement mixing method.The main body of the device mixer by
Water drilling and water drilling extension bar composition, because water drilling rotating speed is difficult to control very much soon, therefore have installed a speed-regulating switch additional thereon, so that
Control its rotating speed.Slurry outlet is bored in water drilling extension bar end, facilitates slurries to be flowed out from around.Drill bit is formed by reinforcement welding,
Drill bit lower end institute welded reinforcement head can play positioning action, and drill bit is attached with nut with drilling rod.Slurry feeding device is by simple
Vehicle-washing device is replaced, and is attached slurry feeding device and mixer body drilling rod with rubber catheter.Test method is as follows：First manually stir
Cement mortar has been mixed, has been loaded into slurry feeding device, cement mortar pressurizes by slurry feeding device, enters hollow drill by conduit,
The grout outlet that drill rod end is reserved on drilling rod is sprayed into the soil body to be mixed, thus in forming chamber cement mixing method cement
Native pile body.
It can be seen that existing indoor cement mixing method experimental rig is simple and crude, without intelligence control system, spout is straight
Perforate is connect, mixing blade is that the cutting efficiency of steel column is not high, the grouting pump of existing apparatus does not have agitating device, and this is also pile
A uneven major reason.
The content of the invention
It is existing in use the invention aims to solve existing indoor cement mixing method experimental rig
Problems and a kind of indoor full automatic for providing simulates the experimental rig of cement mixing method.
The experimental rig of indoor full automatic that the present invention is provided simulation cement mixing method include drilling rod, support, drill bit,
First motor, the second motor, filling system, control system and chamber, wherein drilling rod are erected at experiment by branch
The upper end of case, drilling rod is hollow, and drill bit is assemblied in the lower end of drilling rod, and the first motor and the second motor are respectively provided at
The upper and lower part of drilling rod, the first motor drives drilling rod to be lifted, and the second motor drives drilling rod to be rotated, note
Slurry system is by Grouting Pipe and the intracavity inter-connection of drilling rod, and the drilling rod on drill bit top, which is provided with mouth spray, filling system, to be sprayed
Slurries sprayed by the inner chamber of Grouting Pipe and drilling rod bottom from mouth spray, control system and the first motor, the second driving
Motor is connected with filling system, and control system controls the work of the first motor, the second motor and filling system.
It is equipped with drilling rod between mouth spray and drill bit on cutting blade, the drilling rod on mouth spray top and is symmetrically equipped with two
Group stirring vane, every group of stirring vane is constituted by three blades, and the length of edging blade is more than the length of two blades in inner side.
Mouth spray is provided with two in the left and right of drilling rod, and the mouth spray on the left side is connected by the first branch pipe with the inner chamber of drilling rod
Logical, the mouth spray on the right is by the second branch pipe and the intracavity inter-connection of drilling rod, and the length of the first branch pipe is more than the length of the second branch pipe
Degree, the tip shroud of mouth spray is provided with filter screen, and the nozzle of mouth spray is provided with ball, and the lower end of ball is connected with spring, spring
Rear end is connected in fixed column.
First motor and the second motor are servomotor.
Filling system includes grouting pressure room, grouting pump and slip casting cabinet, and wherein grouting pressure room is located at slip casting cabinet
Upper end, grouting pressure room is used to preparing and storing cement grout, and the bottom of grouting pressure room is provided with rabbling mechanism, and grouting pump is located at
The top of slip casting cabinet is connected with grouting pressure room, and grouting pressure room passes through Grouting Pipe and the intracavity inter-connection of drilling rod, slip casting
Control panel is also equipped with cabinet.
Control system is assemblied in the slip casting cabinet of filling system, includes pressure sensor and displacement transducer, pressure
Sensor is used to controlling the grouting pressure and injection speed of filling system, displacement transducer be used for the lifting speed for controlling drilling rod and
Velocity of rotation, control system is connected with the first motor, the second motor and grouting pump, and control system control first drives
The work of motor, the second motor and grouting pump, control system is connected with the control panel on slip casting cabinet, passes through control
The work of panel command control system.
Leading truck is provided between support and chamber.
The operation principle of the present invention：
By the motor of state modulator first and the second motor of displacement transducer in setting control system, so that
The lifting speed and rotating speed of drilling rod are controlled, and then controls the cutting speed of the mixing speed of stirring vane and cutting blade on drilling rod
Degree.The lifting speed of drilling rod is set as 10mm/min-100mm/min；The mixing speed of stirring vane is set as 10 rev/min -50
Rev/min；The cutting speed of cutting blade is set as 10 revs/min -50 revs/min.
Drill bit is sunk down into after set depth, is opened filling system, two extending type mouth sprays is whitewashed, while drilling rod
It is lifted up, obtains cement mixing method.By setting the parameter of pressure sensor, note of the grouting pump to two mouth sprays is controlled
Pressure and injection speed are starched, the lifting speed and rotating speed of drilling rod are controlled by setting displacement transducer.Grouting pressure is set as
350KPa-450KPa；Injection speed is set as 20mL/min-700mL/min.
Slurries include cement, water and early strength agent, and the mass ratio of cement, water and early strength agent is 1:1:0.02.
Two mouth sprays of drilling rod bottom are whitewashed simultaneously during slip casting, and drilling rod is rotated and upgraded after chamber top surface, weight
Carry out 2 times -3 times above-mentioned drilling rod rotations again to sink, two mouth sprays are whitewashed, and drilling rod rotates and upgrades the behaviour of chamber top surface
Make, you can prepare indoor cement mixing method.
First motor, the second motor, the pressure sensor in control system and displacement transducer and slip casting
Grouting pressure room, grouting pump and slip casting cabinet in system are the assembling of existing equipment, and therefore, concrete model and specification do not have
Repeated.
Beneficial effects of the present invention：
The device that the present invention is provided assembles two in the bottom of drilling rod has extending type mouth spray, this extending type mouth spray
It can make the indoor cement mixing method to be formed that there is good pile uniformity, pile quality is good, uniformity is high, economy
It is good and being capable of intelligentized control method.Thoroughly solve existing experimental rig simple and crude, without intelligence control system, spout is direct
Perforate, mixing blade is the not high problems of cutting efficiency of steel column.
Brief description of the drawings
Fig. 1 is device overall structure diagram of the present invention.
Fig. 2 is the substructure schematic diagram of drilling rod of the present invention.
Fig. 3 is drilling rod bottom mouth spray structural representation of the present invention.
1st, drilling rod 2, support 3, drill bit 4, the first motor 5, the second motor 6, filling system 7, control system
System 8, chamber 9, Grouting Pipe 10, mouth spray 11, cutting blade 12, stirring vane 13, the first branch pipe 14, the second branch pipe
15th, filter screen 16, ball 17, spring 18, fixed column 20, grouting pressure room 21, grouting pump 22, slip casting cabinet 23, stirring
Mechanism 24, control panel 25, leading truck.
Embodiment
Refer to shown in Fig. 1 to Fig. 3：
The experimental rig for the indoor full automatic simulation cement mixing method that the present invention is provided includes drilling rod 1, support 2, bored
First 3, first motor 4, the second motor 5, filling system 6, control system 7 and chamber 8, wherein drilling rod 1 pass through branch
Frame 2 is located at the upper end of chamber 8, and drilling rod 1 is hollow, and drill bit 3 is assemblied in the lower end of drilling rod 1, the first motor 4 and second
Motor 5 is respectively provided at the upper and lower part of drilling rod 1, and the first motor 4 drives drilling rod 1 to be lifted, the second driving electricity
Machine 5 drives drilling rod 1 to be rotated, and filling system 6 passes through Grouting Pipe 9 and the intracavity inter-connection of drilling rod 1, the drilling rod 1 on the top of drill bit 3
The slurries for being provided with injection in mouth spray 10, filling system 6 are sprayed by the inner chamber of Grouting Pipe 9 and the bottom of drilling rod 1 from mouth spray 10
Go out, control system 7 is connected with the first motor 4, the second motor 5 and filling system 6, the control of control system 7 first
The work of motor 4, the second motor 5 and filling system 6.
It is right on cutting blade 11, the drilling rod 1 on the top of mouth spray 10 to be equipped with drilling rod 1 between mouth spray 10 and drill bit 3
Title is equipped with two groups of stirring vanes 12, and every group of stirring vane 12 is constituted by three blades, and the length of edging blade is more than inner side
The length of two blades.
Mouth spray 10 is provided with two in the left and right of drilling rod 1, and the mouth spray 10 on the left side passes through in the first branch pipe 13 and drilling rod 1
Chamber is connected, and the mouth spray 10 on the right is by the second branch pipe 14 and the intracavity inter-connection of drilling rod 1, and the length of the first branch pipe 13 is more than
The length of second branch pipe 14, the tip shroud of mouth spray 10 is provided with filter screen 15, and the nozzle of mouth spray 10 is provided with ball 16, ball 16
Lower end be connected with spring 17, the rear end of spring 17 is connected in fixed column 18.
First motor 4 and the second motor 5 are servomotor.
Filling system 6 includes grouting pressure room 20, grouting pump 21 and slip casting cabinet 22, and wherein grouting pressure room 20 is located at
The upper end of slip casting cabinet 22, grouting pressure room 20 is used to preparing and storing cement grout, and the bottom of grouting pressure room 20 is provided with stirring
Mechanism 23, the top that grouting pump 21 is located at slip casting cabinet 22 is connected with grouting pressure room 20, and grouting pressure room 20 passes through slip casting
Control panel 24 is also equipped with the intracavity inter-connection of pipe 9 and drilling rod 1, slip casting cabinet 22.
Control system 7 is assemblied in the slip casting cabinet 22 of filling system 6, includes pressure sensor and displacement transducer,
Pressure sensor is used for the grouting pressure and injection speed for controlling filling system 6, and displacement transducer is used for the lifting for controlling drilling rod 1
Speed and velocity of rotation, control system 7 are connected with the first motor 4, the second motor 5 and grouting pump 21, control system 7
Control the work of the first motor 4, the second motor 5 and grouting pump 21, control system 7 and the control on slip casting cabinet 22
Panel 24 is connected, and passes through the work of the command control system 7 of control panel 24.
Leading truck 25 is provided between support 2 and chamber 8.
The operation principle of the present invention：
By state modulator the first motor 4 and the second motor 5 of displacement transducer in setting control system 7,
So as to control the lifting speed and rotating speed of drilling rod 1, and then control the mixing speed and cutting blade of stirring vane 12 on drilling rod 1
11 cutting speed.The lifting speed of drilling rod 1 is set as 10mm/min-100mm/min；The mixing speed setting of stirring vane 12
For 10 revs/min -50 revs/min；The cutting speed of cutting blade 11 is set as 10 revs/min -50 revs/min.
Drill bit 3 is sunk down into after set depth, is opened filling system 6, two extending type mouth sprays 10 is whitewashed, simultaneously
Drilling rod 1 is lifted up, and obtains cement mixing method.By setting the parameter of pressure sensor, control grouting pump 21 sprays to two
The grouting pressure and injection speed of mouth 10 are starched, the lifting speed and rotating speed of drilling rod 1 are controlled by setting displacement transducer.Slip casting pressure
Power is set as 350KPa-450KPa；Injection speed is set as 20mL/min-700mL/min.
Slurries include cement, water and early strength agent, and the mass ratio of cement, water and early strength agent is 1:1:0.02.
Two mouth sprays 10 of the bottom of drilling rod 1 are whitewashed simultaneously during slip casting, and drilling rod 1 rotates and upgrades the top surface of chamber 8
Afterwards, repeat 2 times -3 times above-mentioned rotations of drilling rod 1 to sink, two mouth sprays 10 are whitewashed, and drilling rod 1 rotates and upgrades experiment
The operation of the top surface of case 8, you can prepare indoor cement mixing method.
First motor 4, the second motor 5, the pressure sensor in control system 7 and displacement transducer and note
Grouting pressure room 20, grouting pump 21 and slip casting cabinet 22 in slurry system 6 are the assembling of existing equipment, therefore, concrete model
Do not repeated with specification.
Claims (7)
1. a kind of indoor full automatic simulates the experimental rig of cement mixing method, it is characterised in that：Include drilling rod, support, brill
Head, the first motor, the second motor, filling system, control system and chamber, wherein drilling rod are erected at examination by branch
The upper end of tryoff, drilling rod is hollow, and drill bit is assemblied in the lower end of drilling rod, and the first motor and the second motor are set respectively
In the upper and lower part of drilling rod, the first motor drives drilling rod to be lifted, and the second motor drives drilling rod to be rotated,
Filling system is by Grouting Pipe and the intracavity inter-connection of drilling rod, and the drilling rod on drill bit top, which is provided with mouth spray, filling system, to be sprayed
The slurries penetrated are sprayed by the inner chamber of Grouting Pipe and drilling rod bottom from mouth spray, and control system is driven with the first motor, second
Dynamic motor is connected with filling system, and control system controls the work of the first motor, the second motor and filling system.
2. a kind of indoor full automatic according to claim 1 simulates the experimental rig of cement mixing method, it is characterised in that：
It is equipped with drilling rod between described mouth spray and drill bit on cutting blade, the drilling rod on mouth spray top and is symmetrically equipped with two groups
Stirring vane, every group of stirring vane is constituted by three blades, and the length of edging blade is more than the length of two blades in inner side.
3. a kind of indoor full automatic according to claim 1 simulates the experimental rig of cement mixing method, it is characterised in that：
Described mouth spray the left and right of drilling rod be provided with two, the mouth spray on the left side by the first branch pipe and the intracavity inter-connection of drilling rod,
The mouth spray on the right is by the second branch pipe and the intracavity inter-connection of drilling rod, and the length of the first branch pipe is more than the length of the second branch pipe,
The tip shroud of mouth spray is provided with filter screen, and the nozzle of mouth spray is provided with ball, and the lower end of ball is connected with spring, the rear end of spring
It is connected in fixed column.
4. a kind of indoor full automatic according to claim 1 simulates the experimental rig of cement mixing method, it is characterised in that：
The first described motor and the second motor are servomotor.
5. a kind of indoor full automatic according to claim 1 simulates the experimental rig of cement mixing method, it is characterised in that：
Described filling system includes grouting pressure room, grouting pump and slip casting cabinet, and wherein grouting pressure room is located on slip casting cabinet
End, grouting pressure room is used to preparing and storing cement grout, and the bottom of grouting pressure room is provided with rabbling mechanism, and grouting pump is located at note
The top of pulp grinder case is connected with grouting pressure room, and grouting pressure room passes through Grouting Pipe and the intracavity inter-connection of drilling rod, slip casting machine
Control panel is also equipped with case.
6. a kind of indoor full automatic according to claim 1 simulates the experimental rig of cement mixing method, it is characterised in that：
Described control system is assemblied in the slip casting cabinet of filling system, includes pressure sensor and displacement transducer, and pressure is passed
Sensor is used for the grouting pressure and injection speed for controlling filling system, and displacement transducer is used for the lifting speed for controlling drilling rod and turned
Dynamic speed, control system is connected with the first motor, the second motor and grouting pump, control system control the first driving electricity
The work of machine, the second motor and grouting pump, control system is connected with the control panel on slip casting cabinet, passes through chain of command
The work of plate command control system.
7. a kind of indoor full automatic according to claim 1 simulates the experimental rig of cement mixing method, it is characterised in that：
Leading truck is provided between described support and chamber.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710455260.1A CN107059960A (en) | 2017-06-16 | 2017-06-16 | A kind of indoor full automatic simulates the experimental rig of cement mixing method |
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| CN201710455260.1A CN107059960A (en) | 2017-06-16 | 2017-06-16 | A kind of indoor full automatic simulates the experimental rig of cement mixing method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342135A (en) * | 2018-09-30 | 2019-02-15 | 华中科技大学 | A kind of laboratory testing rig and method of the uniform curing clay of microorganism |
| CN109339126A (en) * | 2018-11-14 | 2019-02-15 | 昆明理工大学 | A kind of pile simulator of interior solidification pile body |
| CN109944283A (en) * | 2019-03-28 | 2019-06-28 | 浙江大学 | A kind of indoor model test device and method for simulating long screw auger pore pressure bored pile piling |
| CN114646755A (en) * | 2022-03-24 | 2022-06-21 | 中交四航工程研究院有限公司 | Test device for simulating field pile-forming construction of cement soil mixing pile |
| CN114875980A (en) * | 2022-04-15 | 2022-08-09 | 中交四航工程研究院有限公司 | Soil layer identification physical model test device for cement soil mixing pile |
| CN114908815A (en) * | 2022-04-15 | 2022-08-16 | 中交四航工程研究院有限公司 | Quantitative evaluation method for stirring uniformity of cement soil stirring pile |
| CN115324126A (en) * | 2022-08-16 | 2022-11-11 | 中国水利水电第七工程局有限公司 | Stirring pile test device for indoor simulation of underground water flow and use method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342135A (en) * | 2018-09-30 | 2019-02-15 | 华中科技大学 | A kind of laboratory testing rig and method of the uniform curing clay of microorganism |
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| CN109339126A (en) * | 2018-11-14 | 2019-02-15 | 昆明理工大学 | A kind of pile simulator of interior solidification pile body |
| CN109339126B (en) * | 2018-11-14 | 2020-08-18 | 昆明理工大学 | Pile forming simulation device for indoor solidified pile body |
| CN109944283A (en) * | 2019-03-28 | 2019-06-28 | 浙江大学 | A kind of indoor model test device and method for simulating long screw auger pore pressure bored pile piling |
| CN114646755A (en) * | 2022-03-24 | 2022-06-21 | 中交四航工程研究院有限公司 | Test device for simulating field pile-forming construction of cement soil mixing pile |
| CN114875980A (en) * | 2022-04-15 | 2022-08-09 | 中交四航工程研究院有限公司 | Soil layer identification physical model test device for cement soil mixing pile |
| CN114908815A (en) * | 2022-04-15 | 2022-08-16 | 中交四航工程研究院有限公司 | Quantitative evaluation method for stirring uniformity of cement soil stirring pile |
| CN115324126A (en) * | 2022-08-16 | 2022-11-11 | 中国水利水电第七工程局有限公司 | Stirring pile test device for indoor simulation of underground water flow and use method thereof |
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