CN106644689B - A kind of adjustable lateral pressure loading device and its test method for the test of rock twin shaft - Google Patents
A kind of adjustable lateral pressure loading device and its test method for the test of rock twin shaft Download PDFInfo
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- CN106644689B CN106644689B CN201611020261.5A CN201611020261A CN106644689B CN 106644689 B CN106644689 B CN 106644689B CN 201611020261 A CN201611020261 A CN 201611020261A CN 106644689 B CN106644689 B CN 106644689B
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- steel plate
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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
- G01N3/02—Details
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0254—Biaxial, the forces being applied along two normal axes of the specimen
Abstract
The invention discloses a kind of adjustable lateral pressure loading devices and its test method for the test of rock twin shaft, the device includes reaction frame, side pressure cabinet and hand-operating pressure pump, wherein, the reaction frame includes two constraint steel plates that are identical and being arranged oppositely, pass through several high-strength bolt connections between two constraint steel plates, wherein side pressure cabinet is provided on the inside of the constraint steel plate of side, it is placed with rock sample to be measured between other side constraint steel plate and side pressure cabinet, the gas outlet of the hand-operating pressure pump is connected to side pressure cabinet.It is pressurizeed by hand-operating pressure pump, realization laterally loads rock sample.Pressure value is adjusted in time by hand-operating pressure pump, and lateral pressure value is adjusted during realizing test.The loading system simple structure, easy to assembly, operation is convenient and cost is relatively low, can be commonly used to the test of laboratory rock Biaxial stress.
Description
Technical field
It is specially a kind of for rock sample Biaxial Compression laboratory test the present invention relates to rock mechanics and engineering field
Lateral pressure loading device and its test method.
Background technique
In the rock engineerings such as mining, water conservancy and traffic, the strength characteristic of rock is a vital basic parameter,
It is directly related to the steady in a long-term and safe operation of engineering.In laboratory conditions, carry out rock strength destroy research for
Correctly recognize outer carrier strip part and other influence factors are of great significance to the affecting laws of rock strength.However, this current side
The research in face is also concentrated mainly on uniaxial loading or normal triaxial load.In practical rock engineering, due to excavating off-load etc.
Reason changes the stress of rock mass, through often will appear plane stress state namely biaxial stress state after stress redistribution
(stress on two opposites, another opposite do not stress, i.e. the scope of freedom).But it is limited to Biaxial stress equipment, about rock in twin shaft
Intensity evolution rule and rupture mechanism under stress do not obtain deep experimental study also.Therefore, develop it is a kind of simple,
Experimental rig suitable for indoor rock sample Biaxial stress is the urgent need of rock mechanics worker.
Currently, the present Research about the lateral loading device of rock sample, is summarized as follows:
1, " a kind of rock confining pressure loading experimental apparatus and experimental method " patent of invention discloses a kind of using using steel plate
Cabinet, pre-stressed bolt and the torque spanner surrounded realizes the device and method laterally loaded (referring to application number
201410080149.5, inventor Xia Binwei, etc.), this method is suitable for the loading experiment of inexpensive, smaller stress, but right
It is insufficient in terms of timely adjustment confining pressure value during larger stress loading and test.
2, " mechanical rock breaking test platform confining pressure device " patent of invention disclose it is a kind of using control system, hydraulic system and
Mechanical part etc. realizes the confining pressure device (referring to application number: 201310086456.X, inventor Gong Qiuming, etc.) of broken rock platform,
This method can be realized adjustable side pressure value, but the apparatus structure is complicated, at high cost.
3, " the confining pressure loading device of use for laboratory rock testing " patent of invention discloses a kind of using cylindrical tube
The compositions such as body, bearing seat and load lid confining pressure loading device (referring to application number 201420009131.1, inventor Wang Xinwu,
Deng), which can apply circumferential uniformly distributed confining pressure, cannot laterally load to the progress of rectangular-shape rock sample.
In short, about the lateral loading device of rock, there is also equipment to construct complexity, is difficult to realize adjustable lateral pressure at present
The deficiencies of force value, urgent need develop a kind of simple, economically and efficiently lateral load testing machine.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides a kind of for the test of rock twin shaft
Adjustable lateral pressure loading device and its test method, it is simple structure, easily operated, and can be realized adjustable pressure.
Technical solution: to achieve the above object, the technical solution adopted by the present invention are as follows:
It is a kind of for rock twin shaft test adjustable lateral pressure loading device, including reaction frame, side pressure cabinet and manually
Pressure pump, wherein the reaction frame includes two constraint steel plates that are identical and being arranged oppositely, if passing through between two constraint steel plates
Dry root high-strength bolt connection is wherein provided with side pressure cabinet on the inside of the constraint steel plate of side, and the other side constrains steel plate and side pressure case
Rock sample to be measured is placed between body, the gas outlet of the hand-operating pressure pump is connected to side pressure cabinet.
The reaction frame includes two constraint steel plates that are identical and being arranged oppositely, and the respectively first constraint steel plate and second is about
Beam steel plate is opened up on this two blocks constraint steel plates respectively there are four larger bolt hole, and the bolts hole one on two blocks of constraint steel plates are a pair of
It answers, and passes through the larger bolt hole on two constraint steel plates by four larger high-strength bolts and fix, and larger high-strength bolt
End is fixed with larger high-strength nut；Wherein on the constraint steel plate of side setting there are four compared with stove bolt hole, and by four compared with
Small high-strength bolt and four smaller high-strength nuts fix one piece of third constraint steel plate, and the area of the third constraint steel plate is less than the
One constraint steel plate.
The side pressure cabinet includes one piece of the 4th constraint steel plate, is opened up on the 4th constraint steel plate there are four larger bolt hole,
And four larger bolts hole are corresponding with the larger high-strength bolt position on the first constraint steel plate and the second constraint steel plate；4th about
Side on beam steel plate far from rock sample is connected with rigid box, and a side of the rigid box far from rock sample is faced
Sky is equipped with inside rigid box and matches in height and width with rigid box, but it is parallel to smaller high-strength bolt direction
It is shorter in length than the rubber sleeve of rigid box, a connecting hole is offered on rigid box and rubber sleeve, for connecting manual pressure
The gas outlet of power pump.
The hand-operating pressure pump includes hand-held crank, pressure gauge, water container, hose, valve and cylinder body, wherein
The hand-held crank is set to one end of cylinder body, and hand-held crank is connect with the intracorporal piston of cylinder is located at, the other end connection of cylinder body
There is hose, is provided with pressure gauge on hose；Water container is also connected on the cylinder body；The valve is two, one of them
It is set to the junction of water container and cylinder body, another is set on hose.
The two sides of the rock sample are placed with stiffness bearer.
A kind of adjustable lateral pressure load test method for the test of rock Biaxial stress, comprising the following steps:
Side pressure cabinet is nested on four smaller high-strength bolts by step 1, and rigid box is far from rock sample side
Free face be just nested in reaction frame third constraint steel plate on, and with smaller high-strength nut by two sides first constrain steel plate with
Third constrains Interal fixation；
The outlet end of hose in hand-operating pressure pump is connected by step 2 with the connecting hole in side pressure cabinet and rubber sleeve
It connects；
Rock sample is placed in reaction frame middle position by step 3, and the suitable stiffness bearer of preferred dimension is placed in rock
The two sides of sample, then whole device is completed；
Step 4 loads rubber sleeve by hand-operating pressure pump, pushes side pressure cabinet mobile to rock sample one end, counter-force
The constraint steel plate at frame both ends provides counter-force, to realize the lateral load to rock sample；Observe the side of pressure gauge real-time display
It loads and unloads in time to pressure value, and by hand-operating pressure pump, lateral pressure is adjusted during realizing test.
The utility model has the advantages that the present invention can be to slabby rock sample using simple reaction frame, side pressure case and hand-operating pressure pump
Apply lateral pressure.The loading system simple structure, easy to assembly, operation is convenient and cost is relatively low.Pass through during test
The i.e. changeable side pressure value of pressure pump is adjusted, lateral pressure is adjustable during realizing test.It is tested in conjunction with simple axial uniaxial loading
The test of rock sample Biaxial stress can be realized in machine.By changing cushion block position, it is in conjunction with simple axial uniaxial loading testing machine
Rock sample direct shear test can be achieved.By changing stiffness bearer size, the research of rock dimensional effect rock sample can be carried out.
Detailed description of the invention
Fig. 1 is rock sample Biaxial stress device and test method schematic diagram；
Fig. 2 is the schematic diagram of reaction frame；
Fig. 3 is the schematic diagram of side pressure cabinet；
Fig. 4 is the schematic diagram of hand-operating pressure pump.
In figure: 1-stiffness bearer；2-reaction frames；3-side pressure cabinets；4-hand-operating pressure pumps；5-rock samples；61—
Larger high-strength bolt；62-smaller high-strength bolts；71-larger high-strength nuts；72-smaller high-strength nuts；81-the first constraint
Steel plate；82-the second constraint steel plate；83-thirds constrain steel plate；84-the four constraint steel plate；91-larger bolts hole；92-compared with
Stove bolt hole；10-rigid box；11-rubber sleeves；12-connecting holes；13-cranks；14-pressure gauges；15-water containers；
16-hoses；17-valves；18-cylinder bodies；19-pistons.
Specific embodiment
The present invention will be further explained with reference to the accompanying drawing.
It is as shown in Figure 1 a kind of adjustable lateral pressure loading device for the test of rock twin shaft, including reaction frame 2, side
Press cabinet 3 and hand-operating pressure pump 4, wherein the reaction frame 2 includes two constraint steel plates that are identical and being arranged oppositely, and two about
By several high-strength bolt connections between beam steel plate, side pressure cabinet 3, the other side wherein are provided on the inside of the constraint steel plate of side
Rock sample 5 to be measured, the gas outlet of the hand-operating pressure pump 4 and side pressure case are placed between constraint steel plate and side pressure cabinet 3
Body 3 is connected to.
Such as Fig. 2, reaction frame 2 includes two constraint steel plates that are identical and being arranged oppositely, the respectively first constraint 81 He of steel plate
Second constraint steel plate 82, opens up that there are four larger bolt hole 91, two pieces of spiral shells constrained on steel plates on this two blocks constraint steel plates respectively
Keyhole corresponds, and passes through the larger bolt hole 91 on two constraint steel plates by four larger high-strength bolts 61 and fix, and
The end of larger high-strength bolt 61 is fixed with larger high-strength nut 71；Wherein there are four smaller spiral shells for setting on the constraint steel plate of side
Keyhole 92, and fix one piece of third by four smaller high-strength bolt 62 and four high-strength nuts 72 and constrain steel plate 83, described the
The area of three constraint steel plates 83 is less than the first constraint steel plate 81.
Such as Fig. 3, side pressure cabinet 3 includes one piece of the 4th constraint steel plate 84, opened up on the 4th constraint steel plate 84 there are four it is larger
Bolt hole 91, and the larger bolt hole 91 on this four larger bolts hole 91 and the first constraint steel plate 81 and the second constraint steel plate 82
Position is corresponding；The side far from rock sample 5 is connected with rigid box 10 on 4th constraint steel plate 84, and the rigid box 10 is separate
Sky is faced in one side of rock sample, is equipped with inside rigid box 10 and matches in height and width with rigid box 10, but its
It is parallel to the rubber sleeve 11 for being shorter in length than rigid box in smaller 62 direction of high-strength bolt, on rigid box 10 and rubber sleeve 11
A connecting hole 12 is offered, for connecting the gas outlet of hand-operating pressure pump 4.
Such as Fig. 4, hand-operating pressure pump 4 include hand-held crank 13, pressure gauge 14, water container 15, hose 16, valve 17 and
Cylinder body 18, wherein the hand-held crank 13 is set to one end of cylinder body 18, holds crank 13 and the piston 19 in cylinder body 18
Connection, the other end of cylinder body 18 are connected with hose 16, pressure gauge 14 are provided on hose 16；Sheng is also connected on the cylinder body 18
Water container 15；The valve 17 is two, one of them is set to the junction of water container 15 Yu cylinder body 18, another setting
In on hose 16.Wherein, a certain amount of water is housed in water container 15, rubber case 11 is injected by pressure pump, to generate side
Pressure.
The two sides of the rock sample 5 are placed with stiffness bearer 1.
Heretofore described larger high-strength bolt 61, smaller high-strength bolt 62, larger high-strength nut 71, smaller high-strength spiral shell
Mother 72, larger bolt hole 91 refer to opposite between the high-strength bolt, high-strength nut, bolt hole of two kinds of specifications compared with stove bolt hole 92
The size of size.
A kind of adjustable lateral pressure load test method for the test of rock Biaxial stress, comprising the following steps:
Side pressure cabinet 3 is nested on four smaller high-strength bolt 62 by step 1, and rigid box 10 is far from rock sample
The free face of side is just nested on the third constraint steel plate 83 of reaction frame 2, and with smaller high-strength nut 72 by two sides first
It constrains steel plate 81 and third constraint steel plate 83 is fixed；
Step 2, by the connecting hole in the outlet end of the hose 16 in hand-operating pressure pump 4 and side pressure cabinet 3 and rubber sleeve 11
12 are connected；
Rock sample 5 is placed in 2 middle position of reaction frame by step 3, and the suitable stiffness bearer 1 of preferred dimension is placed in rock
The two sides of stone sample 5, then whole device is completed；
Step 4 loads rubber sleeve 11 by hand-operating pressure pump 4, side pressure cabinet 3 is pushed to move to 5 one end of rock sample
Dynamic, the constraint steel plate at 2 both ends of reaction frame provides counter-force, to realize the lateral load to rock sample 5；It is real to observe pressure gauge 14
When the lateral pressure value that shows realize lateral pressure tune during test and by the load in time of hand-operating pressure pump 4 and unloading
Section.
The above is only a preferred embodiment of the present invention, it should be pointed out 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 (6)
1. a kind of adjustable lateral pressure loading device for the test of rock twin shaft, it is characterised in that: including reaction frame (2), side
Press cabinet (3) and hand-operating pressure pump (4), wherein the reaction frame (2) includes two constraint steel plates that are identical and being arranged oppositely,
By several high-strength bolt connections between two constraint steel plates, side pressure cabinet wherein is provided on the inside of the constraint steel plate of side
(3), it is placed with rock sample to be measured (5) between other side constraint steel plate and side pressure cabinet (3), the hand-operating pressure pump (4)
Gas outlet be connected to side pressure cabinet (3).
2. the adjustable lateral pressure loading device according to claim 1 for the test of rock twin shaft, it is characterised in that: institute
Stating reaction frame (2) includes two constraint steel plates that are identical and being arranged oppositely, the respectively first constraint steel plate (81) and the second constraint
Steel plate (82) is opened up on this two blocks constraint steel plates respectively there are four larger bolt hole (91), the bolts hole on two blocks of constraint steel plates
It corresponds, and passes through the larger bolt hole (91) on two constraint steel plates by four larger high-strength bolts (61) and fix, and
The end of larger high-strength bolt (61) is fixed with larger high-strength nut (71)；Wherein on the constraint steel plate of side setting there are four compared with
Stove bolt hole (92), and one piece of third constraint is fixed by four smaller high-strength bolt (62) and four smaller high-strength nut (72)
Steel plate (83), the area of third constraint steel plate (83) is less than the first constraint steel plate (81).
3. the adjustable lateral pressure loading device according to claim 1 for the test of rock twin shaft, it is characterised in that: institute
State side pressure cabinet (3) include one piece of the 4th constraint steel plate (84), the 4th constraint steel plate (84) on open up there are four larger bolt hole
(91), and this four larger bolts hole (91) constrain the larger bolt hole on steel plate (82) with the first constraint steel plate (81) and second
(91) position is corresponding；The side far from rock sample (5) is connected with rigid box (10) in 4th constraint steel plate (84), the rigidity
Cabinet (10) faces sky far from a side of rock sample, be equipped with inside rigid box (10) with rigid box (10) in height and
It is matched on width, but its rubber sleeve (11) for being shorter in length than rigid box (10) for being parallel to smaller high-strength bolt (62) direction,
A connecting hole (12) is offered on rigid box (10) and rubber sleeve (11), for connecting the outlet of hand-operating pressure pump (4)
Mouthful.
4. the adjustable lateral pressure loading device according to claim 1 for the test of rock twin shaft, it is characterised in that: institute
The hand-operating pressure pump (4) stated include hand-held crank (13), pressure gauge (14), water container (15), hose (16), valve (17) with
And cylinder body (18), wherein the hand-held crank (13) is set to one end of cylinder body (18), holds crank (13) and is located at cylinder body
(18) piston (19) connection in, the other end of cylinder body (18) are connected with hose (16), and hose is provided with pressure gauge on (16)
(14)；Water container (15) are also connected on the cylinder body (18)；The valve (17) is two, one of them, which is set to, is filled with water
The junction of container (15) and cylinder body (18), another is set on hose (16).
5. the adjustable lateral pressure loading device according to claim 1 for the test of rock twin shaft, it is characterised in that: institute
The two sides for stating rock sample (5) are placed with stiffness bearer (1).
6. a kind of adjustable lateral pressure load test method for the test of rock Biaxial stress, it is characterised in that: including following
Step:
Side pressure cabinet (3) is nested on four smaller high-strength bolt (62) by step 1, and rigid box (10) is tried far from rock
The free face of sample side is just nested in third constraint steel plate (83) of reaction frame (2), and will with smaller high-strength nut (72)
Two sides first constrain steel plate (81) and third constraint steel plate (83) is fixed；
Step 2, by the company in the outlet end of the hose (16) in hand-operating pressure pump (4) and side pressure cabinet (3) and rubber sleeve (11)
Hole (12) is connect to be connected；
Rock sample (5) is placed in reaction frame (2) middle position by step 3, and the suitable stiffness bearer of preferred dimension (1) is placed in
The two sides of rock sample (5), then whole device is completed；
Step 4 loads rubber sleeve (11) by hand-operating pressure pump (4), pushes side pressure cabinet (3) to rock sample (5) one end
Mobile, the constraint steel plate at reaction frame (2) both ends provides counter-force, to realize the lateral load to rock sample (5)；Observe pressure
The lateral pressure value of table (14) real-time display, and by hand-operating pressure pump (4) load in time and unloading, during realization test
Lateral pressure is adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611020261.5A CN106644689B (en) | 2016-11-17 | 2016-11-17 | A kind of adjustable lateral pressure loading device and its test method for the test of rock twin shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611020261.5A CN106644689B (en) | 2016-11-17 | 2016-11-17 | A kind of adjustable lateral pressure loading device and its test method for the test of rock twin shaft |
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| CN106644689A CN106644689A (en) | 2017-05-10 |
| CN106644689B true CN106644689B (en) | 2019-05-31 |
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| CN201611020261.5A Active CN106644689B (en) | 2016-11-17 | 2016-11-17 | A kind of adjustable lateral pressure loading device and its test method for the test of rock twin shaft |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109946166A (en) * | 2019-03-22 | 2019-06-28 | 湘潭大学 | A kind of rock confining pressure simulator |
| CN110146384A (en) * | 2019-05-20 | 2019-08-20 | 浙江大学 | A kind of test axial compressive force acts on the experimental rig and test method of lower concrete combination interface staight scissors performance |
| CN113310812A (en) * | 2021-02-08 | 2021-08-27 | 山东科技大学 | Anchoring jointed rock mass loading device with lateral stress constraint and experimental method |
| CN113218759B (en) * | 2021-05-08 | 2022-11-15 | 北京科技大学 | Filling body double-shaft loading system reconstructed based on single-shaft testing machine and using method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0954027A (en) * | 1995-08-10 | 1997-02-25 | Bridgestone Corp | Biaxial loading tester |
| CN102778389B (en) * | 2012-06-29 | 2014-07-30 | 哈尔滨工程大学 | Concrete test loading device and test method under load and multifactor coupling |
| CN103439189B (en) * | 2013-08-22 | 2016-07-06 | 中国科学院武汉岩土力学研究所 | A kind of rock Biaxial Compression mesoscale experiments device under stress-current-chemical Coupling |
| CN203688366U (en) * | 2014-01-24 | 2014-07-02 | 山东大学 | Hydraulic fracturing water injection loading device based on rock-like resin test piece |
| CN204086017U (en) * | 2014-09-29 | 2015-01-07 | 湖南科技大学 | A kind of rock twin shaft unloader test device |
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