CN106198243A - The true triaxial of Observable Rock soil similar material deformation fracture adds unloading experimental provision and experimental technique thereof - Google Patents
The true triaxial of Observable Rock soil similar material deformation fracture adds unloading experimental provision and experimental technique thereof Download PDFInfo
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- CN106198243A CN106198243A CN201610450422.8A CN201610450422A CN106198243A CN 106198243 A CN106198243 A CN 106198243A CN 201610450422 A CN201610450422 A CN 201610450422A CN 106198243 A CN106198243 A CN 106198243A
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- similar material
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- 239000011435 rock Substances 0.000 title claims abstract description 44
- 239000000463 material Substances 0.000 title claims abstract description 32
- 239000002689 soil Substances 0.000 title claims abstract description 31
- 238000002474 experimental method Methods 0.000 title claims abstract description 8
- 238000012360 testing method Methods 0.000 claims abstract description 44
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 208000010727 head pressing Diseases 0.000 claims description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 3
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- 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
- G01N3/16—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces applied through gearing
-
- 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
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0037—Generation of the force using mechanical means involving a rotating movement, e.g. gearing, cam, eccentric, or centrifuge effects
-
- 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
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
-
- 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
- G01N2203/0256—Triaxial, i.e. the forces being applied along three normal axes of the specimen
-
- 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
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
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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)
Abstract
The true triaxial that the invention discloses a kind of Observable Rock soil similar material deformation fracture adds unloading experimental provision and experimental technique thereof, this experimental provision includes frame system, loading system and base plate platform, described base plate platform includes base plate and backing plate, described frame system is made up of rear fixed plate block, left fixed plate, front shoe block, right fixed plate, screw rod, hex nut and T-bolt, and described loading system includes handwheel, reducer of turbodrill, screw mandrel, pressure transducer, slip pressure head and fixing pressure head.The present invention not only can carry out true triaxial test to Rock soil similar material test specimen, also can directly observe the deformation fracture of two sections of test specimen in process of the test, have simple and flexible, uses the advantages such as economic, easy to operate and easy to spread.
Description
Technical field
The present invention relates to a kind of true triaxial for Rock soil similar material and add unloading experimental provision, be specifically related to a kind of considerable
The true triaxial surveying Rock soil similar material deformation fracture adds unloading experimental provision and experimental technique thereof.
Background technology
The excavation of the underground engineering Rock And Soils such as lane (tunnel) road, mine, foundation ditch all can produce Unloading Effect to surrounding edge country rock, draws
Play country rock to deform and even rupture.Steady with maintenance engineering for taking effective support means to carry out deformation controlling for rock surrounding gateways Fracture propagation
Fixed, then it is not fee from research rock mass or soil body mechanical behavior feature in adding uninstall process.Traditional method typically uses three axles
Testing machine studies rock (native) body cylinder sample deformation and fracture feature under different axial compressions and confined pressure, but this method exist with
Some deficiency lower: 1. due to the mode using confined pressure to add unloading, rock (native) body is in horizontal plane both direction pressure experienced all the time
It is to maintain consistent, it is impossible to truly three directions of rock (native) body are realized different pressures and add unloading, with Practical Project
There is bigger difference in the stressing conditions of country rock；2., during adding unloading test, rock (native) body cylinder sample is placed in airtight all the time
In space container, country rock end face vertical displacement and side horizontal displacement can only be observed, it is impossible to obtain and add uninstall process
The true 3 D deformation Fracture propagation rule of middle country rock, is not enough to reflect the mechanical behavior feature of rock (native) body comprehensively；3. three axle examination
The machine price of testing is the most higher and operation is complicated, oil leakage phenomenon easily occurs, it is difficult to be used widely.Therefore, traditional method is not
Research rock (native) body deformation fracture behavior characteristics in adding uninstall process can be advantageously used in, provide for engineering surrounding rock stability contorting
Important evidence.
Summary of the invention
For solving the problems referred to above, the invention provides the true triaxial of a kind of Observable Rock soil similar material deformation fracture and add and unload
Carry experimental provision and experimental technique thereof.
For achieving the above object, the technical scheme that the present invention takes is:
The true triaxial of a kind of Observable Rock soil similar material deformation fracture adds unloading experimental provision, including frame system, adds
Loading system and base plate platform, described base plate platform includes base plate and backing plate, and described frame system is fixing by rear fixed plate block, a left side
Plate, front shoe block, right fixed plate, screw rod, hex nut and T-bolt are constituted, described loading system include handwheel,
Reducer of turbodrill, screw mandrel, pressure transducer, slip pressure head, fixing pressure head, backing plate is arranged on the upper end face of base plate, base plate upper
End face is provided with rear fixed plate block, front shoe block, right fixed plate by T-bolt, and left fixed plate is pacified by T-bolt
Being contained in the upper end face of base plate, rear fixed plate block is connected by two screw rods with front shoe block, and screw rod one end passes rear fixed plate block
Connecting and have hex nut, the other end connects through front shoe block has hex nut, left fixed plate and right fixed plate to pass through
Two screw rods is connected, and screw rod one end connects through left fixed plate hex nut, and the other end connects through right fixed plate six
Angle nut, backing plate top is placed with square test specimen, and square test specimen rear end is provided with slip pressure head, and right side is provided with fixing pressure
Head, slip pressure head and fixing pressure head are all connected by leading screw has reducer of turbodrill, leading screw one end to be connected with reducer of turbodrill, another
End is connected with slip pressure head and fixing pressure head respectively by pressure transducer, and described slip pressure head is by pressing plate union joint, slip
Termination, the first pressing plate, framework chute, pressure head chute and reinforcing rib are constituted, and pressing plate is provided with four reinforcing ribs, and center peace
Equipped with pressure head chute, two ends, slip termination are flexibly connected with pressure head chute, are provided with pressing plate union joint on the left of pressing plate, and pressing plate connects
Head is flexibly connected with the reserved chute in right fixed plate, and upper right side and lower right side all offer framework chute, framework chute and
Sliding frame pressing plate union joint in left fixed plate is flexibly connected.(multiple punctuation mark) purpose be realize sliding clamp before and after
In moving process, the sliding frame of left fixed plate is driven also to move forward and backward, and when sliding clamp moves left and right, left fixed plate
Sliding frame then remain stationary as；Described fixing pressure head is by the second pressing plate, reinforcing rib, fixing termination and reserved chute structure
Become, the second pressing plate is provided with four reinforcing ribs, and center is provided with fixing termination, be provided with reserved sliding on the right side of the second pressing plate
Groove, be flexibly connected with the pressing plate union joint of the first pressing plate, it is therefore an objective to coordinates slip termination, it is achieved fixation clip is moving left and right
During, drive the first pressing plate also to move left and right；And sliding clamp is when moving forward and backward, fixation clip then remains stationary as；Ensure examination
Part is in airtight compression environment all the time, will not be extruded.
Preferably, described base plate and backing plate are steel plate.
Preferably, hollow type is made in the middle part of described left fixed plate and front shoe block, and hollow part is provided with U-shaped steel
Sliding frame and poly (methyl methacrylate) plate, it is achieved to before Rock soil similar material test specimen, the deformation fracture phenomenon of left two end faces carries out directly
Connect observation.
The true triaxial of above-mentioned a kind of Observable Rock soil similar material deformation fracture adds the experimental technique of unloading experimental provision, bag
Include following steps:
S1, the cube analog material test specimen made is put into above-mentioned experimental provision, shake rear end and right-hand member handwheel,
The pressure head pressing plate of rear end and right-hand member, front shoe, left fixed plate is made directly to contact with test specimen；
S2, above-mentioned experimental provision is moved on uniaxial loading testing machine platform, at the left end of Rock soil similar material test specimen
Respectively it is respectively arranged 1 high-resolution digital camera, two sections to test specimen with front end both direction and carries out deformation fracture numeral
Photograph measures；
Test specimen end face is loaded and unloads by S3, control uniaxial loading testing machine；Or shake rear end or right-hand member respectively
Handwheel coordinates reducer of turbodrill, promotes screw mandrel slowly to carry out two end faces rear, right of Rock soil similar material test specimen in various degree
Load or unload.
The method have the advantages that
Not only Rock soil similar material test specimen can be carried out true triaxial test, also can be to two sections of test specimen in process of the test
Deformation fracture is directly observed, and has simple and flexible, uses the advantages such as economic, easy to operate and easy to spread.
Accompanying drawing explanation
Fig. 1 is that the true triaxial of the embodiment of the present invention a kind of Observable Rock soil similar material deformation fracture adds unloading experimental provision
Top view.
Fig. 2 is that the true triaxial of the embodiment of the present invention a kind of Observable Rock soil similar material deformation fracture adds unloading experimental provision
Front view.
Fig. 3 is that the true triaxial of the embodiment of the present invention a kind of Observable Rock soil similar material deformation fracture adds unloading experimental provision
Side view.
Fig. 4 is that the true triaxial of the embodiment of the present invention a kind of Observable Rock soil similar material deformation fracture adds unloading experimental provision
The structural representation of middle slip pressure head.
Fig. 5 is that the true triaxial of the embodiment of the present invention a kind of Observable Rock soil similar material deformation fracture adds unloading experimental provision
The structural representation of fixing pressure head.
Detailed description of the invention
In order to make objects and advantages of the present invention clearer, below in conjunction with embodiment, the present invention is carried out further
Describe in detail.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to limit this
Bright.
As Figure 1-Figure 5, true the three of a kind of Observable Rock soil similar material deformation fracture is embodiments provided
Axle adds unloading experimental provision, and including frame system, loading system and base plate platform, described base plate platform includes base plate 12 and pad
Plate 11, described frame system is by rear fixed plate block 2, left fixed plate 6, front shoe block 10, right fixed plate 14, screw rod 3, six
Angle nut 1 and T-bolt 9 are constituted, and described loading system includes handwheel 16, reducer of turbodrill 15, screw mandrel 4, pressure transducer
5, slip pressure head 7, fixing pressure head 13, backing plate 11 is arranged on the upper end face of base plate 12, and the upper end face of base plate 12 passes through T-bolt 9
Being provided with rear fixed plate block 2, front shoe block 10, right fixed plate 14, left fixed plate 6 is arranged on base plate by T-bolt 9
The upper end face of 12, rear fixed plate block 2 is connected by two screw rods 3 with front shoe block 10, and screw rod 3 one end passes rear fixed plate block 2
Connecting and have hex nut 1, the other end connects through front shoe block 10 hex nut 1, left fixed plate 6 and right fixed plate
14 are connected by two screw rods 3, and screw rod 3 one end connects through left fixed plate 6 hex nut 1, and the other end passes right fixed plate
Block 14 connects has hex nut 1, backing plate 11 top to be placed with square test specimen 8, and square test specimen 8 rear end is provided with slip pressure head
7, right side is provided with fixing pressure head 13, slip pressure head 7 and fixing pressure head 13 all has reducer of turbodrill 15, silk by leading screw 4 connection
Thick stick 4 one end is connected with reducer of turbodrill 15, the other end by pressure transducer 5 respectively with slip pressure head 7 and fixing pressure head 13 phase
Even.Described slip pressure head 7 is by pressing plate union joint 19, slip termination the 20, first pressing plate 21, framework chute 22, pressure head chute 23
Constitute with reinforcing rib 24, pressing plate 21 is provided with four reinforcing ribs 24, and center is provided with pressure head chute 23, slip termination 20
Two ends are flexibly connected with pressure head chute 23, be provided with pressing plate union joint 19, upper right side and lower right side and all offer on the left of pressing plate 21
Framework chute 22, framework chute 22 is flexibly connected with the sliding frame 18 pressing plate union joint in left fixed plate 6, it is therefore an objective to realize
During first pressing plate 21 is movable, drives the sliding frame 18 of left fixed plate 6 also to move forward and backward, and the first pressing plate 21 is left
When moving right, the sliding frame 18 of left fixed plate 6 then remains stationary as；Described fixing pressure head is by the second pressing plate 27, reinforcing rib
24, fixing termination 25 and reserved chute 26 are constituted, and the second pressing plate 27 is provided with four reinforcing ribs 24, and center is provided with
Fixing termination 25, is provided with reserved chute 26, is flexibly connected with the pressing plate union joint 19 of the first pressing plate, purpose on the right side of the second pressing plate 27
It is to cooperate with slip termination 20, it is achieved during the second pressing plate 27 moves left and right, drives the first pressing plate 21 also to move left and right；And the
When one pressing plate 21 moves forward and backward, the second pressing plate 27 then remains stationary as；Ensure that test specimen is in airtight compression environment all the time, will not
It is extruded.
Preferably, described base plate 12 and backing plate 11 are steel plate
Preferably, hollow type is made in the middle part of described left fixed plate 6 and front shoe block 10, and hollow part is provided with U
Shaped steel sliding frame 18 and poly (methyl methacrylate) plate 17, it is achieved to before Rock soil similar material test specimen, the deformation fracture of left two end faces existing
As directly observing.
The true triaxial of above-mentioned a kind of Observable Rock soil similar material deformation fracture adds the experimental technique of unloading experimental provision, bag
Include following steps:
S1, the cube analog material test specimen made is put into above-mentioned experimental provision, shake rear end and right-hand member handwheel,
The pressure head pressing plate of rear end and right-hand member, front shoe, left fixed plate is made directly to contact with test specimen；
S2, above-mentioned experimental provision is moved on uniaxial loading testing machine platform, at the left end of Rock soil similar material test specimen
Respectively it is respectively arranged 1 high-resolution digital camera, two sections to test specimen with front end both direction and carries out deformation fracture numeral
Photograph measures；
Test specimen end face is loaded and unloads by S3, control uniaxial loading testing machine；Or shake rear end or right-hand member respectively
Handwheel coordinates reducer of turbodrill, promotes screw mandrel slowly to carry out two end faces rear, right of Rock soil similar material test specimen in various degree
Load or unload.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (4)
1. the true triaxial of an Observable Rock soil similar material deformation fracture adds unloading experimental provision, it is characterised in that include frame
Frame system, loading system and base plate platform, described base plate platform includes base plate (12) and backing plate (11), described frame system by
Rear fixed plate block (2), left fixed plate (6), front shoe block (10), right fixed plate (14), screw rod (3), hex nut (1)
And T-bolt (9) is constituted, described loading system includes handwheel (16), reducer of turbodrill (15), screw mandrel (4), pressure transducer
(5), slip pressure head (7), fixing pressure head (13), backing plate (11) is arranged on the upper end face of base plate (12), the upper end face of base plate (12)
By T-bolt (9), rear fixed plate block (2), front shoe block (10), right fixed plate (14), left fixed plate (6) are installed
It is arranged on the upper end face of base plate (12), rear fixed plate block (2) and front shoe block (10) by T-bolt (9) and passes through two screw rods
(3) being connected, screw rod (3) one end connects through rear fixed plate block (2) hex nut (1), and the other end passes front shoe block
(10) connection has hex nut (1), left fixed plate (6) and right fixed plate (14) to be connected by two screw rods (3), screw rod (3)
One end connects through left fixed plate (6) hex nut (1), and the other end connects through right fixed plate (14) hex nut
(1), backing plate (11) top is placed with square test specimen (8), and square test specimen (8) rear end is provided with slip pressure head (7), and right side is pacified
All connected by leading screw (4) equipped with fixing pressure head (13), slip pressure head (7) and fixing pressure head (13) and have reducer of turbodrill (15),
Leading screw (4) one end is connected with reducer of turbodrill (15), the other end by pressure transducer (5) respectively with slip pressure head (7) and consolidate
Level pressure head (13) is connected, and described slip pressure head (7) is by pressing plate union joint (19), slip termination (20), the first pressing plate (21), frame
Frame chute (22), pressure head chute (23) and reinforcing rib (24) are constituted, and pressing plate (21) is provided with four reinforcing ribs (24), and center
Place is provided with pressure head chute (23), and slip termination (20) two ends are flexibly connected with pressure head chute (23), and pressing plate (21) left side is installed
Pressing plate union joint (19), pressing plate union joint (19) is had to be flexibly connected with the reserved chute (26) in right fixed plate (6), upper right side
Framework chute (22), framework chute (22) and sliding frame (18) pressing plate in left fixed plate (6) is all offered with lower right side
Union joint is flexibly connected；Described fixing pressure head is by the second pressing plate (27), reinforcing rib (24), fixing termination (25) and reserves sliding
Groove (26) is constituted, and the second pressing plate (27) is provided with four reinforcing ribs (24), and center is provided with fixing termination (25), and second
Pressing plate (27) right side is provided with reserved chute (26), is flexibly connected with the pressing plate union joint (19) of the first pressing plate.
The true triaxial of a kind of Observable Rock soil similar material deformation fracture the most as claimed in claim 1 adds unloading experimental provision,
It is characterized in that, described base plate (12) and backing plate (11) are steel plate.
The true triaxial of a kind of Observable Rock soil similar material deformation fracture the most as claimed in claim 1 adds unloading experimental provision,
It is characterized in that, hollow type is made in the middle part of described left fixed plate (6) and front shoe block (10), and hollow part is provided with U
Shaped steel sliding frame (18) and poly (methyl methacrylate) plate (17).
The true triaxial of a kind of Observable Rock soil similar material deformation fracture the most as claimed in claim 1 adds unloading experimental provision
Experimental technique, it is characterised in that comprise the steps:
S1, the cube analog material test specimen made being put into above-mentioned experimental provision, shake rear end and right-hand member handwheel, after making
The pressure head pressing plate with right-hand member, front shoe, left fixed plate is held directly to contact with test specimen；
S2, above-mentioned experimental provision is moved on uniaxial loading testing machine platform, at the left end of Rock soil similar material test specimen and front
End both direction is respectively respectively arranged 1 high-resolution digital camera and two sections of test specimen is carried out deformation fracture Digital photographic
Measure；
Test specimen end face is loaded and unloads by S3, control uniaxial loading testing machine；Or shake rear end or the handwheel of right-hand member respectively
Coordinate reducer of turbodrill, promote screw mandrel slowly two end faces rear, right to Rock soil similar material test specimen to carry out adding in various degree
Carry or unloading.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610450422.8A CN106198243B (en) | 2016-06-15 | 2016-06-15 | The true triaxial of Observable Rock soil similar material deformation fracture adds unloading experimental provision and its experimental method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610450422.8A CN106198243B (en) | 2016-06-15 | 2016-06-15 | The true triaxial of Observable Rock soil similar material deformation fracture adds unloading experimental provision and its experimental method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106198243A true CN106198243A (en) | 2016-12-07 |
| CN106198243B CN106198243B (en) | 2019-02-26 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610450422.8A Expired - Fee Related CN106198243B (en) | 2016-06-15 | 2016-06-15 | The true triaxial of Observable Rock soil similar material deformation fracture adds unloading experimental provision and its experimental method |
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| CN (1) | CN106198243B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769445A (en) * | 2016-11-25 | 2017-05-31 | 太原理工大学 | A kind of indoor static pressure perforation device for determining compression strength of building mortar |
| CN108709810A (en) * | 2018-05-04 | 2018-10-26 | 浙江大学 | A kind of pilot system and method for air pressure unloading simulation rock underground excavation |
| CN109632479A (en) * | 2018-12-14 | 2019-04-16 | 华北水利水电大学 | A kind of true triaxial dynamic pressure testing machine and test method |
| CN109870366A (en) * | 2019-03-18 | 2019-06-11 | 福建工程学院 | A kind of the 3 D deformation experiment loading unit and method of roadbed filling |
| CN110618022A (en) * | 2019-09-17 | 2019-12-27 | 东北大学 | One-way quick electromagnetic unloading device suitable for true triaxial testing machine |
| CN111238953A (en) * | 2019-03-22 | 2020-06-05 | 湘潭大学 | Observation device for rock dense core derivation process |
| CN113447361A (en) * | 2021-07-19 | 2021-09-28 | 中国科学院地质与地球物理研究所 | Variable angle loading testing machine |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769445A (en) * | 2016-11-25 | 2017-05-31 | 太原理工大学 | A kind of indoor static pressure perforation device for determining compression strength of building mortar |
| CN108709810A (en) * | 2018-05-04 | 2018-10-26 | 浙江大学 | A kind of pilot system and method for air pressure unloading simulation rock underground excavation |
| CN108709810B (en) * | 2018-05-04 | 2021-05-14 | 浙江大学 | Test method for simulating underground rock excavation through air pressure unloading |
| CN109632479A (en) * | 2018-12-14 | 2019-04-16 | 华北水利水电大学 | A kind of true triaxial dynamic pressure testing machine and test method |
| CN109870366A (en) * | 2019-03-18 | 2019-06-11 | 福建工程学院 | A kind of the 3 D deformation experiment loading unit and method of roadbed filling |
| CN109870366B (en) * | 2019-03-18 | 2024-02-13 | 福建工程学院 | Three-dimensional deformation test loading device and method for roadbed filling |
| CN111238953A (en) * | 2019-03-22 | 2020-06-05 | 湘潭大学 | Observation device for rock dense core derivation process |
| CN111238953B (en) * | 2019-03-22 | 2021-06-22 | 湘潭大学 | Observation device for rock dense core derivation process |
| CN110618022A (en) * | 2019-09-17 | 2019-12-27 | 东北大学 | One-way quick electromagnetic unloading device suitable for true triaxial testing machine |
| CN110618022B (en) * | 2019-09-17 | 2021-05-18 | 东北大学 | One-way quick electromagnetic unloading device suitable for true triaxial testing machine |
| CN113447361A (en) * | 2021-07-19 | 2021-09-28 | 中国科学院地质与地球物理研究所 | Variable angle loading testing machine |
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