CN105716951A - Rock stratum mobile model frame loading device and test method - Google Patents
Rock stratum mobile model frame loading device and test method Download PDFInfo
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- CN105716951A CN105716951A CN201610229010.1A CN201610229010A CN105716951A CN 105716951 A CN105716951 A CN 105716951A CN 201610229010 A CN201610229010 A CN 201610229010A CN 105716951 A CN105716951 A CN 105716951A
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- hydraulic jack
- rigid metal
- hydraulic
- way reversing
- rock stratum
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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
Abstract
The invention discloses a rock stratum mobile model frame loading device and a test method. The device comprises a cavity formed by a base, a rack and front and back protection plates, simulation rock stratums are arranged in the cavity, and hydraulic cylinders are arranged at the upper part of the rack; the device further comprises a manual hydraulic pump, an oil inlet pipe and an oil return pipe of the manual hydraulic pump are connected with an oil inlet and an oil return port of a two-position four-way reversing valve respectively, rodless cavities and rod cavities of the hydraulic cylinders are connected with a working oil port I and a working oil port II of the two-position four-way reversing valve respectively, manual control valves and hydraulic pressure gauges are arranged on pipelines which connect the hydraulic cylinders with the two-position four-way reversing valve, rigid metal columns are arranged at lower parts of piston rods of the hydraulic cylinders, and spring bases are arranged in positions, corresponding to the rigid metal columns, of the upper surface of the lower simulation rock stratum. With the adoption of the device, continuous loading of the simulation rock stratums can be realized, compaction of the simulation rock stratums is facilitated, and the reliability and the accuracy of a test result are improved.
Description
Technical field
The present invention relates to a kind of similar material simulation experiment field, rock stratum, especially relate to a kind of strata movement model support charger and experimental technique.
Background technology
At present, the traditional rock stratum similar material simulation experiment device of laboratory adopts hydraulic loading device to provide pressure to simulation rock stratum, and the volume within analog simulation experimental device reaches tens of cubic meter, and the advantage of above-mentioned experiment charger is to save portion of material.But there is the defect of following three aspects: one is in experimentation simultaneously, after the excavation of rock stratum, easily cause the pressure head of hydraulic stroker and the disengaging of simulation rock stratum, it is necessary to the moment of experimenter observes, and causes the waste of manpower；Two is the problem that in experimentation, hydraulic jack and the disengaging simulating rock stratum can cause analog material not to be compacted；Three is there is certain potential safety hazard.
Summary of the invention
Goal of the invention: it is an object of the invention to provide a kind of strata movement model support charger and experimental technique, by this charger, can make the experimenter can observation experiment process round the clock, it is achieved the continuous loading in experimentation.
To achieve these goals, present invention employs following technical scheme: a kind of strata movement model support charger, including base, base is provided with frame, front and back backplate it is provided with about frame, forming the cavity of opened upper end between base, frame and front and back backplate, arrange simulation rock stratum in cavity, upper rack is provided with hydraulic jack；Also include hydraulic hand-pump, two position and four-way reversing valves, manual control valve, hydralic pressure gauge, spring pedestal, rigid metal post, hydraulic hand-pump is provided with oil inlet pipe and oil return pipe, the oil-in of oil inlet pipe and two position and four-way reversing valves is connected, the oil return opening of oil return pipe and two position and four-way reversing valves is connected, the rodless cavity of hydraulic jack and the actuator port one of two position and four-way reversing valves are connected, the rod chamber of hydraulic jack and the actuator port two of two position and four-way reversing valves are connected, the pipeline that the rodless cavity of hydraulic jack and the actuator port one of two position and four-way reversing valves are connected is provided with manual control valve and hydralic pressure gauge, the underpart of the piston rod of hydraulic jack is provided with rigid metal post, the position corresponding with rigid metal post at described Imitating rock stratum upper surface is provided with spring pedestal.
Preferably, described rigid metal column end is provided with the hole, location that the piston rod executed with hydraulic jack matches.
Preferably, described spring pedestal includes compression spring, rigid sleeve and rigid metal sheet, and rigid sleeve internal diameter and rigid metal post external diameter match, and at rigid sleeve lower weld rigid metal iron plate, compression spring is placed in rigid sleeve.
Experimental technique according to above-mentioned strata movement model support charger, comprises the following steps:
A, in cavity, lay analog material, and displacement meter is installed, treats that analog material dries, form simulation rock stratum；
B, the piston rod of hydraulic jack is connected with rigid metal post, spring pedestal is placed in the underface of each rigid metal post；
C, proceed by loading, open manual control valve, Non-follow control hydraulic hand-pump, making hydraulic oil enter the rodless cavity of hydraulic jack through oil inlet pipe, the piston rod of hydraulic jack stretches out and is pressed down against simulation rock stratum, the deadweight of simulation overlying rock by rigid metal post and spring pedestal, loading procedure is observed hydralic pressure gauge, make hydralic pressure gauge show to the pressure reading set, then close manual control valve, stop Non-follow control hydraulic hand-pump；
D, pull down front and back backplate, simulate roadway excavation, in digging process, when the reading of hydralic pressure gauge is less than the pressure reading set, opens manual control valve, open hydraulic hand-pump, by oil inlet pipe oil-feed, make the reading of hydralic pressure gauge recover to originally setting reading；
F, record the displacement of whole simulation rock stratum, observation experiment process is simulated being caving of rock stratum；
After g, experiment terminate, two position and four-way reversing valve commutations, the rodless cavity of hydraulic jack and the actuator port two of two position and four-way reversing valves are connected, the rod chamber of hydraulic jack and the actuator port one of two position and four-way reversing valves are connected, open manual control valve, open hydraulic hand-pump, make hydraulic oil enter the rod chamber of hydraulic jack through oil inlet pipe, the piston rod retraction that hydraulic jack is executed, removes spring pedestal and rigid metal post.
Compared with the similar material simulation experiment device of existing rock stratum, the invention have the advantages that
(1) by the basis of existing rock stratum similar material simulation experiment device, add spring pedestal, hydraulic hand-pump and rigid metal post, can realize simulation rock stratum is loaded continuously, be beneficial to the compacting of simulation rock stratum, improve reliability and the accuracy of experimental result；
(2) its simple in construction, easy to operate, uses manpower and material resources sparingly, and result of use is good.
Accompanying drawing explanation
Fig. 1 is the perspective view of the device of the strata movement model support loading of the present invention；
Fig. 2 is the oil circuit connection diagram of hydraulic hand-pump and hydraulic jack；
Fig. 3 is the generalized section of the spring pedestal of the present invention；
Fig. 4 is the top view of the spring pedestal of the present invention；
The generalized section of Fig. 5 position rigid metal cylinder of the present invention；
The top view of Fig. 6 position rigid metal cylinder of the present invention.
In figure: 1 hydraulic hand-pump；2 oil inlet pipes；3 oil return pipes；4 hydraulic jacks；5 manual control valves；6 hydralic pressure gauges；7 frames；Backplate before and after 8；9 bases；10 spring pedestals；11 rigid metal posts；12 compression springs；13 rigid sleeves；14 rigid metal sheet；15-positions hole；16-two position and four-way reversing valve.
Detailed description of the invention:
Below in conjunction with accompanying drawing the present invention done and further explain.
As illustrated in fig. 1 and 2, a kind of strata movement model support charger of the present invention, including base 9, base 9 is provided with frame 7, frame about 7 is provided with front and back backplate 8, forming the cavity of opened upper end between base 9, frame 7 and front and back backplate 8, arrange simulation rock stratum in cavity, frame 7 top is provided with hydraulic jack 4.Strata movement model support charger also includes hydraulic hand-pump 1, manual control valve 5, hydralic pressure gauge 6, spring pedestal 10 and rigid metal post 11, hydraulic hand-pump 1 is provided with oil inlet pipe 2 and oil return pipe 3, oil inlet pipe 2 is connected with the oil-in of two position and four-way reversing valves 16, oil return pipe 3 is connected with the oil return opening of two position and four-way reversing valves 16, the rodless cavity of hydraulic jack 4 and the actuator port one of two position and four-way reversing valves 16 are connected, the rod chamber of hydraulic jack 4 and the actuator port two of two position and four-way reversing valves 16 are connected, the pipeline that the rodless cavity of hydraulic jack 4 and the actuator port one of two position and four-way reversing valves 16 are connected is provided with manual control valve 5 and hydralic pressure gauge 6, the underpart of the piston rod of hydraulic jack 4 is provided with rigid metal post 11, the position corresponding with rigid metal post 11 at described Imitating rock stratum upper surface is provided with spring pedestal 10.
If Fig. 3 is to shown in 6, described rigid metal post 11 end is provided with executes, with hydraulic jack, the hole, location that the piston rod of 4 matches, described spring pedestal 10 includes compression spring 12, rigid sleeve 13 and rigid metal sheet 14, rigid sleeve 13 internal diameter and rigid metal post 11 external diameter match, at rigid sleeve 13 lower weld rigid metal iron plate 14, compression spring 12 is placed in rigid sleeve 13.
The experimental technique of root strata movement model support charger mentioned above, comprises the following steps:
A, in cavity, lay analog material, and displacement meter is installed, treats that analog material dries, form simulation rock stratum；
B, the piston rod of hydraulic jack 4 is connected with rigid metal post 11, spring pedestal 10 is placed in the underface of each rigid metal post 11；
C, proceed by loading, open manual control valve 5, Non-follow control hydraulic hand-pump 1, making hydraulic oil enter the rodless cavity of hydraulic jack 4 through oil inlet pipe 2, the piston rod of hydraulic jack 4 stretches out and passes through rigid metal post 11 and spring pedestal 10 is pressed down against simulation rock stratum, the deadweight of simulation overlying rock, loading procedure is observed hydralic pressure gauge, make hydralic pressure gauge 6 display to the pressure reading set, then Guan Bi manual control valve 5, stop Non-follow control hydraulic hand-pump 1；
D, pull down front and back backplate 8, simulation roadway excavation, in digging process, there will be the reduction of power between rigid metal post 11 and spring pedestal 10, it should be noted that careful observation, when the reading of hydralic pressure gauge 6 is less than the pressure reading set, open manual control valve 5, open hydraulic hand-pump 1, by oil inlet pipe 2 oil-feed, make the reading of hydralic pressure gauge 6 recover to originally setting reading；
F, record the displacement of whole simulation rock stratum, observation experiment process is simulated being caving of rock stratum；
After g, experiment terminate, two position and four-way reversing valves 16 commutate, the rodless cavity of hydraulic jack 4 and the actuator port two of two position and four-way reversing valves 16 are connected, the rod chamber of hydraulic jack 4 and the actuator port one of two position and four-way reversing valves 16 are connected, open manual control valve 5, open hydraulic hand-pump 1, make hydraulic oil enter the rod chamber of hydraulic jack 4 through oil inlet pipe 2, the piston rod retraction of 4 executed by hydraulic jack, spring pedestal 10 and rigid metal post 11 is removed.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (4)
1. a strata movement model support charger, including base (9), base (9) is provided with frame (7), frame (7) left and right is provided with front and back backplate (8), the cavity of opened upper end is formed between base (9), frame (7) and front and back backplate (8), arranging simulation rock stratum in cavity, frame (7) top is provided with hydraulic jack (4)；It is characterized in that: also include hydraulic hand-pump (1), two position and four-way reversing valves (16), manual control valve (5), hydralic pressure gauge (6), spring pedestal (10), rigid metal post (11), hydraulic hand-pump (1) is provided with oil inlet pipe (2) and oil return pipe (3), oil inlet pipe (2) is connected with the oil-in of two position and four-way reversing valves (16), oil return pipe (3) is connected with the oil return opening of two position and four-way reversing valves (16), the rodless cavity of hydraulic jack (4) and the actuator port one of two position and four-way reversing valves (16) are connected, the rod chamber of hydraulic jack (4) and the actuator port two of two position and four-way reversing valves (16) are connected, the pipeline that the rodless cavity of hydraulic jack (4) and the actuator port one of two position and four-way reversing valves (16) are connected is provided with manual control valve (5) and hydralic pressure gauge (6), the underpart of the piston rod of hydraulic jack (4) is provided with rigid metal post (11), the position corresponding with rigid metal post (11) at described Imitating rock stratum upper surface is provided with spring pedestal (10).
2. a kind of strata movement model support charger according to claim 1, it is characterised in that: described rigid metal post (11) end is provided with the hole, location (15) that the piston rod with hydraulic jack (4) matches.
3. a kind of strata movement model support charger according to claim 1, it is characterized in that: described spring pedestal (10) includes compression spring (12), rigid sleeve (13) and rigid metal sheet (14), rigid sleeve (13) internal diameter and rigid metal post (11) external diameter match, at rigid sleeve (13) lower weld rigid metal iron plate (14), compression spring (12) is placed in rigid sleeve (13).
4. the experimental technique of strata movement model support charger according to claim 1, it is characterised in that comprise the following steps:
A, in cavity, lay analog material, and displacement meter is installed, treats that analog material dries, form simulation rock stratum；
B, the piston rod of hydraulic jack (4) is connected with rigid metal post (11), spring pedestal (10) is placed in the underface of each rigid metal post (11)；
C, proceed by loading, open manual control valve (5), Non-follow control hydraulic hand-pump (1), hydraulic oil is made to enter the rodless cavity of hydraulic jack (4) through oil inlet pipe (2), hydraulic jack is executed the piston rod of (4) and is stretched out and pass through rigid metal post (11) and spring pedestal (10) is pressed down against simulation rock stratum, the deadweight of simulation overlying rock, loading procedure is observed hydralic pressure gauge, make the pressure reading that hydralic pressure gauge (6) display extremely sets, then close manual control valve (5), stop Non-follow control hydraulic hand-pump (1)；
D, pull down front and back backplate (8), simulation roadway excavation, in digging process, when the reading of hydralic pressure gauge (6) is less than the pressure reading set, open manual control valve (5), open hydraulic hand-pump (1), by oil inlet pipe (2) oil-feed, make the reading of hydralic pressure gauge (6) recover to originally setting reading；
F, record the displacement of whole simulation rock stratum, observation experiment process is simulated being caving of rock stratum；
After g, experiment terminate, two position and four-way reversing valves (16) commutate, the rodless cavity of hydraulic jack (4) and the actuator port two of two position and four-way reversing valves (16) are connected, the rod chamber of hydraulic jack (4) and the actuator port one of two position and four-way reversing valves (16) are connected, open manual control valve (5), open hydraulic hand-pump (1), hydraulic oil is made to enter the rod chamber of hydraulic jack (4) through oil inlet pipe (2), the piston rod retraction of (4) executed by hydraulic jack, spring pedestal (10) and rigid metal post (11) is removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610229010.1A CN105716951B (en) | 2016-04-13 | 2016-04-13 | A kind of strata movement model rack loading device and experimental method |
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| CN201610229010.1A CN105716951B (en) | 2016-04-13 | 2016-04-13 | A kind of strata movement model rack loading device and experimental method |
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| CN105716951A true CN105716951A (en) | 2016-06-29 |
| CN105716951B CN105716951B (en) | 2018-07-17 |
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Cited By (2)
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| CN108007781A (en) * | 2017-11-17 | 2018-05-08 | 山东科技大学 | Roadway support mechanics simulation experiment system and its method under sound combined load |
| 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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| 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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| CN105716951B (en) | 2018-07-17 |
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