CN105716951B - Rock stratum moving model frame loading device and experimental method - Google Patents
Rock stratum moving model frame loading device and experimental method Download PDFInfo
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- CN105716951B CN105716951B CN201610229010.1A CN201610229010A CN105716951B CN 105716951 B CN105716951 B CN 105716951B CN 201610229010 A CN201610229010 A CN 201610229010A CN 105716951 B CN105716951 B CN 105716951B
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- 239000011435 rock Substances 0.000 title claims abstract description 36
- 238000002474 experimental method Methods 0.000 title claims abstract description 17
- 239000003921 oil Substances 0.000 claims abstract description 40
- 239000002184 metal Substances 0.000 claims abstract description 38
- 229910052751 metal Inorganic materials 0.000 claims abstract description 38
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 10
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 35
- 238000004088 simulation Methods 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000009412 basement excavation Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000005056 compaction Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000009467 reduction Effects 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
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a rock stratum moving model frame loading device and an experimental method, the device comprises a cavity formed by a base, a rack and front and rear guard plates, a simulated rock stratum is arranged in the cavity, a hydraulic oil cylinder is arranged at the upper part of the rack, the device also comprises a manual hydraulic pump, an oil inlet pipe and an oil return pipe of the manual hydraulic pump are respectively connected with an oil inlet and an oil return port of a two-position four-way reversing valve, a rodless cavity and a rod cavity of the hydraulic oil cylinder are respectively connected with a working oil port I and a working oil port II of the two-position four-way reversing valve, a manual control valve and a hydraulic pressure gauge are arranged on a pipeline connecting the hydraulic oil cylinder and the two-position four-way reversing valve, a rigid metal column is arranged at the lower part of a piston rod. The invention can realize continuous loading of the simulated rock stratum, is beneficial to compaction of the simulated rock stratum and improves the reliability and accuracy of the experimental result.
Description
Technical field
The present invention relates to a kind of rock stratum similar material simulation experiment fields, add more particularly, to a kind of strata movement model support
It carries and sets and experimental method.
Background technology
Currently, the traditional rock stratum similar material simulation experiment device in laboratory is carried using hydraulic loading device to simulation rock stratum
For pressure, since the volume inside analog simulation experimental device reaches tens of cubic meters, the advantages of above-mentioned experiment loading device is can
To save some materials.But exist simultaneously the defect of following three aspects:First, during the experiment, holding after rock stratum is excavated
The disengaging for easily causing the pressure head and simulation rock stratum of hydraulic stroker, needs to observe at the time of experimenter, causes the wave of manpower
Take;Second is that the problem of hydraulic cylinder and the disengaging of simulation rock stratum can cause analog material not to be compacted in experimentation;Third, depositing
In some potential safety problems.
Invention content
Goal of the invention:The object of the present invention is to provide a kind of strata movement model rack loading device and experimental methods, pass through
The loading device, can make experimenter may not necessarily observation experiment process round the clock, realize the continuous load in experimentation.
To achieve the goals above, present invention employs the following technical solutions:A kind of strata movement model support load dress
It sets, including pedestal, pedestal is equipped with rack, and rack or so is equipped with front and back backplate, is formed between pedestal, rack and front and back backplate
The open cavity in portion, cavity interior setting simulation rock stratum, upper rack are equipped with hydraulic cylinder;Further include hydraulic hand-pump, two four
Logical reversal valve, manual control valve, hydralic pressure gauge, spring pedestal, rigid metal column, hydraulic hand-pump are equipped with oil inlet pipe and oil return
Pipe, oil inlet pipe are connected with the oil inlet of two position and four-way reversing valves, and oil return pipe is connected with the oil return opening of two position and four-way reversing valves, hydraulic pressure
The rodless cavity of oil cylinder is connected with the actuator port one of two position and four-way reversing valves, the rod chamber of hydraulic cylinder and two position and four-way reversing valves
Actuator port two be connected, set on the pipeline that the rodless cavity of hydraulic cylinder is connected with the actuator port one of two position and four-way reversing valves
There are manual control valve and hydralic pressure gauge, the underpart of the piston rod of hydraulic cylinder is equipped with rigid metal column, on the Imitating rock stratum
Surface position corresponding with rigid metal column is equipped with spring pedestal.
Preferably, the rigid metal column end is equipped with the location hole to match with the piston rod that hydraulic cylinder is applied.
Preferably, the spring pedestal includes compressed spring, rigid sleeve and rigid metal sheet, rigid sleeve internal diameter with just
Property metal column outer diameter matches, and in rigid sleeve lower weld rigid metal iron plate, compressed spring is placed in rigid sleeve.
According to the experimental method of above-mentioned strata movement model rack loading device, include the following steps:
A, it is laid with analog material in cavity, and displacement meter is installed, waits for that analog material dries, forms simulation rock stratum;
B, the piston rod of hydraulic cylinder is connect with rigid metal column, spring pedestal is placed in each rigid metal column
Underface;
C, proceed by load, open manual control valve, manually control hydraulic hand-pump, make hydraulic oil through oil inlet pipe into
Enter the rodless cavity of hydraulic cylinder, the piston rod of hydraulic cylinder stretches out and is pressed down against simulation by rigid metal column and spring pedestal
Rock stratum simulates the dead weight of overlying rock, hydralic pressure gauge is observed in loading procedure, and hydralic pressure gauge is made to show to the pressure reading of setting,
Then it is closed manual control valve, stopping manually controls hydraulic hand-pump;
D, front and back backplate is removed, roadway excavation is simulated, in digging process, when the reading of hydralic pressure gauge is less than the pressure set
When reading, manual control valve is opened, open hydraulic hand-pump makes the reading of hydralic pressure gauge restore to original by oil inlet pipe oil inlet
To set reading;
F, the displacement of the entire simulation rock stratum of record, observation experiment simulate being caving for rock stratum in the process;
G, after experiment, the commutation of two position and four-way reversing valves, the work of the rodless cavity of hydraulic cylinder and two position and four-way reversing valves
Make hydraulic fluid port two to be connected, the rod chamber of hydraulic cylinder is connected with the actuator port one of two position and four-way reversing valves, opens hand control valve
Door opens hydraulic hand-pump, and hydraulic oil is made to enter the rod chamber of hydraulic cylinder through oil inlet pipe, and the piston rod that hydraulic cylinder is applied returns
Contracting, spring pedestal and rigid metal column are removed.
Compared with existing rock stratum similar material simulation experiment device, the present invention has the following advantages:
(1) by the basis of existing rock stratum similar material simulation experiment device, increasing spring pedestal, hand-hydraulic
Pump and rigid metal column are conducive to the compacting of simulation rock stratum, improve experimental result can, it can be achieved that continuously loaded to simulation rock stratum
By property and accuracy;
(2) its is simple in structure, easy to operate, uses manpower and material resources sparingly, and using effect is good.
Description of the drawings
Fig. 1 is the dimensional structure diagram of the device of the strata movement model support load of the present invention;
Fig. 2 is the oil circuit connection schematic diagram of hydraulic hand-pump and hydraulic cylinder;
Fig. 3 is the diagrammatic cross-section of the spring pedestal of the present invention;
Fig. 4 is the vertical view of the spring pedestal of the present invention;
The diagrammatic cross-section of the positions Fig. 5 rigid metal cylinder of the present invention;
The vertical view of the positions Fig. 6 rigid metal cylinder of the present invention.
In figure:1-hydraulic hand-pump;2-oil inlet pipes;3-oil return pipes;4-hydraulic cylinders;5-manual control valves;
6-hydralic pressure gauges;7-racks;8-front and back backplates;9-pedestals;10-spring pedestals;11-rigid metal columns;12-compression bullets
Spring;13-rigid sleeves;14-rigid metal sheets;15- location holes;Two position and four-way reversing valves of 16-.
Specific implementation mode:
Further explanation is done to the present invention below in conjunction with the accompanying drawings.
As illustrated in fig. 1 and 2, a kind of strata movement model rack loading device of the invention, including pedestal 9, pedestal 9 are equipped with
Rack 7, rack 7 or so are equipped with front and back backplate 8, and the cavity of opened upper end is formed between pedestal 9, rack 7 and front and back backplate 8, empty
Intracavitary setting simulation rock stratum, 7 top of rack is equipped with hydraulic cylinder 4.Strata movement model rack loading device further includes hand-hydraulic
Pump 1, manual control valve 5, hydralic pressure gauge 6, spring pedestal 10 and rigid metal column 11, hydraulic hand-pump 1 are equipped with oil inlet pipe 2 and return
Oil pipe 3, oil inlet pipe 2 are connected with the oil inlet of two position and four-way reversing valves 16, the oil return opening of oil return pipe 3 and two position and four-way reversing valves 16
Be connected, the rodless cavity of hydraulic cylinder 4 is connected with the actuator port one of two position and four-way reversing valves 16, the rod chamber of hydraulic cylinder 4 and
The actuator port two of two position and four-way reversing valves 16 is connected, in the work of the rodless cavity and two position and four-way reversing valves 16 of hydraulic cylinder 4
The connected pipeline of hydraulic fluid port one is equipped with manual control valve 5 and hydralic pressure gauge 6, and the underpart of the piston rod of hydraulic cylinder 4 is equipped with rigidity gold
Belong to column 11, spring pedestal 10 is equipped in Imitating rock stratum upper surface position corresponding with rigid metal column 11.
As shown in Fig. 3 to 6,11 end of rigid metal column is determined equipped with what the piston rod for applying 4 with hydraulic cylinder matched
Position hole, the spring pedestal 10 include compressed spring 12, rigid sleeve 13 and rigid metal sheet 14,13 internal diameter of rigid sleeve with just
Property 11 outer diameter of metal column matches, and in 13 lower weld rigid metal iron plate 14 of rigid sleeve, compressed spring 12 is placed in rigid enclosure
In cylinder 13.
The experimental method of root strata movement model rack loading device mentioned above, includes the following steps:
A, it is laid with analog material in cavity, and displacement meter is installed, waits for that analog material dries, forms simulation rock stratum;
B, the piston rod of hydraulic cylinder 4 is connect with rigid metal column 11, spring pedestal 10 is placed in each rigidity gold
Belong to the underface of column 11;
C, load is proceeded by, manual control valve 5 is opened, manually controls hydraulic hand-pump 1, make hydraulic oil through oil inlet pipe
2 enter the rodless cavity of hydraulic cylinders 4, the piston rod of hydraulic cylinder 4 stretch out and by rigid metal column 11 and spring pedestal 10 to
Lower extrusion simulation rock stratum, simulates the dead weight of overlying rock, hydralic pressure gauge is observed in loading procedure, makes the display of hydralic pressure gauge 6 to setting
Pressure reading, then be closed manual control valve 5, stopping manually control hydraulic hand-pump 1;
D, front and back backplate 8 is removed, roadway excavation is simulated, in digging process, it may appear that rigid metal column 11 and spring bottom
The reduction of power between seat 10, it should be noted that careful observation opens hand when pressure reading of the reading of hydralic pressure gauge 6 less than setting
Dynamic control valve 5, opens hydraulic hand-pump 1, by 2 oil inlet of oil inlet pipe, the reading of hydralic pressure gauge 6 is made to restore to original setting to read
Number;
F, the displacement of the entire simulation rock stratum of record, observation experiment simulate being caving for rock stratum in the process;
G, after experiment, two position and four-way reversing valves 16 commutate, the rodless cavity of hydraulic cylinder 4 and two position and four-way reversing valves 16
Actuator port two be connected, the rod chamber of hydraulic cylinder 4 is connected with the actuator port one of two position and four-way reversing valves 16, unlatching manually
Control valve 5 opens hydraulic hand-pump 1, and hydraulic oil is made to enter the rod chamber of hydraulic cylinder 4 through oil inlet pipe 2, and hydraulic cylinder applies 4
Piston rod retraction, spring pedestal 10 and rigid metal column 11 are removed.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (4)
1. a kind of strata movement model rack loading device, including pedestal (9), pedestal (9) is equipped with rack (7), rack (7) left and right
Equipped with front and back backplate (8), the cavity of opened upper end is formed between pedestal (9), rack (7) and front and back backplate (8), is arranged in cavity
Rock stratum is simulated, rack (7) top is equipped with hydraulic cylinder (4);It is characterized in that:Further include that hydraulic hand-pump (1), two four-ways change
To valve (16), manual control valve (5), hydralic pressure gauge (6), spring pedestal (10), rigid metal column (11), hydraulic hand-pump (1)
Equipped with oil inlet pipe (2) and oil return pipe (3), oil inlet pipe (2) is connected with the oil inlet of two position and four-way reversing valves (16), oil return pipe (3)
It is connected with the oil return opening of two position and four-way reversing valves (16), the work of the rodless cavity and two position and four-way reversing valves (16) of hydraulic cylinder (4)
Make hydraulic fluid port one to be connected, the rod chamber of hydraulic cylinder (4) is connected with the actuator port two of two position and four-way reversing valves (16), in hydraulic oil
The pipeline that the rodless cavity of cylinder (4) is connected with the actuator port one of two position and four-way reversing valves (16) is equipped with manual control valve (5)
With hydralic pressure gauge (6), the underpart of the piston rod of hydraulic cylinder (4) is equipped with rigid metal column (11), in the simulation rock stratum upper surface and
Rigid metal column (11) corresponding position is equipped with spring pedestal (10).
2. a kind of strata movement model rack loading device according to claim 1, it is characterised in that:The rigid metal column
(11) end is equipped with the location hole (15) to match with the piston rod of hydraulic cylinder (4).
3. a kind of strata movement model rack loading device according to claim 1, it is characterised in that:The spring pedestal
(10) include compressed spring (12), rigid sleeve (13) and rigid metal sheet (14), rigid sleeve (13) internal diameter and rigid metal
Column (11) outer diameter matches, and in rigid sleeve (13) lower weld rigid metal sheet (14), compressed spring (12) is placed in rigid enclosure
In cylinder (13).
4. the experimental method of strata movement model rack loading device according to claim 1, which is characterized in that including following step
Suddenly:
A, it is laid with analog material in cavity, and displacement meter is installed, waits for that analog material dries, forms simulation rock stratum;
B, the piston rod of hydraulic cylinder (4) is connect with rigid metal column (11), spring pedestal (10) is placed in each rigidity
The underface of metal column (11);
C, load is proceeded by, manual control valve (5) is opened, manually controls hydraulic hand-pump (1), make hydraulic oil through oil inlet pipe
(2) enter the rodless cavity of hydraulic cylinder (4), the piston rod that hydraulic cylinder applies (4) stretches out and by rigid metal column (11) and bullet
Spring pedestal (10) is pressed down against simulation rock stratum, simulates the dead weight of overlying rock, hydralic pressure gauge is observed in loading procedure, make hydralic pressure gauge
(6) then display is closed manual control valve (5) to the pressure reading of setting, and stopping manually controls hydraulic hand-pump (1);
D, front and back backplate (8) is removed, roadway excavation is simulated, in digging process, when the reading of hydralic pressure gauge (6) is less than the pressure set
When power is read, manual control valve (5) is opened, open hydraulic hand-pump (1) makes hydralic pressure gauge (6) by oil inlet pipe (2) oil inlet
Reading restore to original setting reading;
F, the displacement of the entire simulation rock stratum of record, observation experiment simulate being caving for rock stratum in the process;
G, after experiment, two position and four-way reversing valves (16) commutation, the rodless cavity and two position and four-way reversing valves of hydraulic cylinder (4)
(16) actuator port two is connected, and the rod chamber of hydraulic cylinder (4) is connected with the actuator port one of two position and four-way reversing valves (16),
Manual control valve (5) is opened, hydraulic hand-pump (1) is opened, hydraulic oil is made to enter having for hydraulic cylinder (4) through oil inlet pipe (2)
Rod cavity, hydraulic cylinder apply the piston rod retraction of (4), spring pedestal (10) and rigid metal column (11) are removed.
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CN201610229010.1A CN105716951B (en) | 2016-04-13 | 2016-04-13 | Rock stratum moving model frame loading device and experimental method |
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CN108007781B (en) * | 2017-11-17 | 2020-05-22 | 山东科技大学 | Dynamic and static combined load roadway support body mechanical simulation test system and method thereof |
CN109298158A (en) * | 2018-08-13 | 2019-02-01 | 宿州学院 | Sound loads mutative scale similarity model test and more Dynamic Changes Analysis systems |
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