CN209485588U - A kind of very three-dimensional stress of primary rock overcoring method measuring device of spherical shape backpack body - Google Patents
A kind of very three-dimensional stress of primary rock overcoring method measuring device of spherical shape backpack body Download PDFInfo
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- CN209485588U CN209485588U CN201920518953.5U CN201920518953U CN209485588U CN 209485588 U CN209485588 U CN 209485588U CN 201920518953 U CN201920518953 U CN 201920518953U CN 209485588 U CN209485588 U CN 209485588U
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Abstract
The utility model discloses a kind of very three-dimensional stress of primary rock overcoring method measuring devices of spherical backpack body, including strain ball, the propeller being connect with strain ball, the strain ball is spherical, the periphery wall for straining ball is equipped with several foil gauges, several plastic emitting apertures, the propeller includes piston, shell, dumping directional hole, cavity is equipped in shell, piston one end is slidably matched with cavity, the other end is connect with mounting rod, the dumping directional hole is arranged on shell, cavity is connected to by dumping directional hole with glue channel is led, and is marked with bonding agent in the cavity.The utility model uses rigid design and the true three dimensional arrangement of stress section, realize the very three-dimensional In-situ rock stress measurement under complex stress environment with rock mass heterogeneity, perfect true three-dimension geosciences modeling technology, provides new thinking and big data analysis operation for Rock stress measurement field and provides true initial rock stress field.
Description
Technical field
The utility model belongs to the Rock stress measurement technical field in rock mass mechanics, applies to underground mine, underground electricity
It stands, the Rock stress measurement engineering of the underground engineering in dam body, tunnel and big cross section, specifically, it is true to be related to a kind of spherical backpack body
Three-dimensional stress of primary rock overcoring method measuring device.
Background technique
With the progress of science and technology and the use of mechanized equipment, underground engineering construction, dam body, tunnel and slope excavating
Speed than obviously increases in the past, but the technology in terms of Rock stress measurement is not caught up with much, and the stress of primary rock is to cause underground work
The essential power that journey and dam body destroy, and by measuring condition and expensive testing expense, cause many engineerings substantially with vertical
Stress and coefficient of horizontal pressure convert and obtain.Traditional three axis Rock stress measurement device of hollow inclusion using cylinder design,
The 3 groups of stress flower arranged with 120 degree each other of angle, totally 12 stress sections form, from design, it is difficult to reach very three-dimensional
Measurement, and from the three-dimensional stress the case where from the point of view of analysis, the out of plumb of part foil gauge stress makes the stress for measuring same orientation
Piece occurs stretching and compression phenomena, and the accuracy of measurement data is caused to decline.Hydraulic fracturing is put to the test environment and time effects,
It is difficult to play its measurement work, while being also difficult to reach true three-dimensional measurement works by the heterogeneity of rock mass.
In recent years, due to the foundation of large data center and cloud computing platform, the measurement data pair of very three-dimensional initial rock stress field
Calculating plays significant role, but still very three-dimensional test can be achieved without any in existing measurement method and technology.
In view of this special to propose the utility model.
Utility model content
The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a kind of spherical backpack body true three
Tie up stress of primary rock overcoring method measuring device, using rigid design and the true three dimensional arrangement of stress section, realize under complex stress environment and
The very three-dimensional In-situ rock stress measurement of rock mass heterogeneity, perfect true three-dimension geosciences modeling technology, leads for Rock stress measurement
Domain provides new thinking and big data analysis operation and provides true initial rock stress field.
In order to solve the above technical problems, the basic idea of the utility model adopting the technical scheme is:
A kind of very three-dimensional stress of primary rock overcoring method measuring device of spherical shape backpack body, pushes away including strain ball, with what strain ball was connect
Into device, the strain ball is spherical, and the periphery wall for straining ball is equipped with several foil gauges, several plastic emitting apertures, and foil gauge passes through
Data line is electrically connected with receiver, and the strain ball is connect by sphere connecting rod with propeller, sphere connecting rod and strain ball
Vertical connection, the sphere connecting rod is equipped with wiring channel, axially penetrate through lead glue channel, wiring channel be in communication with the outside
Line outlet, data line passes through wiring channel inside strain ball and is pierced by by line outlet, leads glue channel and connect with plastic emitting aperture, described
Propeller includes piston, shell, dumping directional hole, and cavity is equipped in shell, and piston one end is slidably matched with cavity, the other end and
Mounting rod connection, the dumping directional hole are arranged on shell, and cavity is connected to by dumping directional hole with glue channel is led, the cavity
Inside it is marked with bonding agent.
Further, the diameter of the strain ball is 36mm, and the diameter of sphere is 34mm, and outer surface of spheroid is coated with one layer
The anti-corrosion waterproof layer of 1mm thickness, the propeller is cylindrical or class is cylindric, and diameter or circumference are less than or equal to outer diameter
36mm。
Further, the sphere is titanium-aluminium alloy sphere, and the anti-corrosion waterproof layer is epoxy resin layer.
Further, the foil gauge is self-temperature-compensated strain ga(u)ge, and the foil gauge is 21, wherein sphere equator
Plane is equipped with 7, uniformly distributed along 360 ° with sphere connecting rod；60 ° of planes of north and south latitude of sphere are respectively arranged 6, between each foil gauge
It is mutually 60 °；A foil gauge is respectively arranged in the north and south pole of sphere.
Further, the plastic emitting aperture is two, and is arranged symmetrically in the two sides of strain ball vertical line, and the bonding agent is
Epoxy resin.
Further, the sphere connecting rod and propeller are clamped, and sphere connecting rod is equipped with solid far from one end of strain ball
Fixed card, propeller are equipped with connector, and connector is connect with shell close to the end of strain ball, and connector is equipped with matches with fixing card
The connecting pin of conjunction.
Further, the piston and inner walls junction are equipped with the sealing ring for sealing, and the shell is equipped with anti-
The only fixed pin of piston abjection.
It further, further include drilling director, drilling director is in the form of annular discs, and mounting rod coaxially passes through drilling guiding
Device, the drilling director are equipped with for the wire guide across data line.
The utility model realizes very three-dimensional Rock stress measurement work, special since the measurement of initial rock stress field is considerably complicated
It is not the influence of multiple tectonic activity, the present apparatus and method solve the problems, such as the measurement of complicated initial rock stress field.The present apparatus is from appearance
It is upper to use spherical designs, it is ensured that in stress of primary rock perpendicular acting to stress section；The present apparatus is from stress section arrangement using very three-dimensional
Design, in same orientation, there are two stress sections up to few, it is ensured that the accuracy of the data of measurement and very three-dimensionality；The present apparatus and side
The data of method from measurement are very three-dimensionality, provide theory analysis basis for stress of primary rock spatial evolution rule；The present apparatus and method are surveyed
Fixed accurate three-dimensional initial rock stress field can effectively avoid the generation and targeted design scheme of accident potential, ensure safe and reliable
And technical feasibility, hence it is evident that reduce economic input.
After adopting the above technical scheme, the utility model has the advantages that compared with prior art.
1, the apparatus structure is succinct, easy to operate, and installation is simple, low to test environmental requirement.
2, the very three-dimensional stress of primary rock overcoring method measuring device of spherical backpack body and method are proposed using Modernized Informatization Management, surveyed
The three dimensional arrangement that stress section uses is measured, so that stress of primary rock perpendicular acting on stress section, effectively achieves true three-dimensional ground stress
Test job.
3, the device data collection system accuracy rate is high, and the stress with orientation is measured by 2 stress sections, can mutually be proofreaded,
Strong applicability, it is at low cost.
4, the data of device and method measurement can apply to big data, cloud computing analysis platform, work for numerical simulation
Provide effectively data collection and analysis technical support.
5, the utility model of the device compensates for the vacancy both at home and abroad in very three-dimensional stress of primary rock measurement, reaches international neck
It is first horizontal.
6, the spherical shape of the device is designed using 36mm, while can be used for Always Online" monitoring, to stake, column, barricade etc.
Monitor on-line it is feasible, it is applied widely.
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing.
Detailed description of the invention
The a part of attached drawing as the application, is further understood from the utility model for providing, the utility model
Illustrative embodiments and their description for explaining the utility model, but do not constitute improper limits to the present invention.Obviously,
The accompanying drawings in the following description is only some embodiments, to those skilled in the art, is not paying creative labor
Under the premise of dynamic, it can also be obtained according to these attached drawings other accompanying drawings.In the accompanying drawings:
Fig. 1 is that an embodiment of the present invention strains spherical structure schematic diagram one；
Fig. 2 is that an embodiment of the present invention strains spherical structure schematic diagram two
Fig. 3 is an embodiment of the present invention measuring device structural schematic diagram；
Fig. 4 is the portion a detail drawing in Fig. 3；
Fig. 5 is an embodiment of the present invention hemispherical hone the schematic diagram of the section structure；
Fig. 6 is the schematic diagram that drills when an embodiment of the present invention measures.
In figure: 1- foil gauge；2- plastic emitting aperture；3- leads glue channel；4- fixing card；5- sphere connecting rod；6- foil gauge cloth
It sets a little；7- wiring channel；8- strains ball；9- sealing ring；10- line outlet；11- connecting pin；12- connector；13- dumping orientation
Hole；14- cavity；15- fixed pin；16- piston；17- mounting rod；18- drilling director；19- data line；20- wire guide；21-
Hemispherical hone.
It should be noted that these attached drawings and verbal description are not intended to limit the design of the utility model in any way
Range, but illustrate the concept of the utility model for those skilled in the art by referring to specific embodiments.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
The technical solution in embodiment is clearly and completely described in attached drawing in type embodiment, and following embodiment is for illustrating this
Utility model, but be not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that term " on ", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for describing the utility model and simplifying description, rather than the device or element of indication or suggestion meaning must have specific side
Position is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirectly connected through an intermediary.
For the ordinary skill in the art, can be understood with concrete condition above-mentioned term in the present invention specifically contain
Justice.
Embodiment one
As shown in Figures 1 to 6, a kind of very three-dimensional stress of primary rock overcoring method measurement dress of spherical shape backpack body described in the present embodiment
It sets, including strain ball 8, the propeller connecting with strain ball 8, strain ball 8 is spherical, and strain ball 8 uses the titanium of diameter 34mm
Aluminium alloy is process, and the surface of ball has the epoxide resin material of 1mm, guarantees anti-corrosion waterproof action, that is to say, that strain ball 8
Whole diameter is 36mm.The periphery wall for straining ball 8 is equipped with several foil gauges 1, several plastic emitting apertures 2, and foil gauge 1 passes through data
Line 19 is electrically connected with receiver, and foil gauge 1 is 21, and 21 foil gauges 1 are bonded on strain ball 8 by foil gauge layout points 6, is
It adapts to environmental change and guarantees that measurement is accurate, built-in temperature-compensating plate, also or foil gauge 1 is self-temperature-compensated strain ga(u)ge 1.This
The arrangement of 21 foil gauges in example are as follows: equatorial plane is 7, mutually respectively reserves a position and date line at 45 degree of angles
Face vertical point, connecting rod 5 are arranged.60 degree of planes of north and south Wei, each arrangement 6, between each other at 60 degree.North and south pole respectively arranges one
Piece foil gauge.This position mode derives for later period theoretical formula and solution provides foundation.Plastic emitting aperture 2 is two, and symmetrical
It is arranged in the two sides of strain 8 vertical line of ball.
Strain ball 8 connect by sphere connecting rod 5 with propeller, sphere connecting rod 5 with strain that ball 8 is vertical to be connect, propulsion
Device is cylindrical or class is cylindric, and diameter or circumference are less than or equal to 36mm to outer diameter, that is to say, that the outer profile ratio of propeller
It is small to strain ball 8, is so conducive to be put into drilling.To connect convenient for sphere connecting rod 5 with propeller, clamping side is can be used in the two
Formula, sphere connecting rod 5 are equipped with fixing card 4 far from one end of strain ball 8, and propeller is equipped with connector 12, connector 12 and shell
Close to the end connection of strain ball 8, connector 12 is equipped with the connecting pin 11 cooperated with fixing card 4.
Sphere connecting rod 5 is equipped with wiring channel 7, axially penetrate through lead glue channel 3, wiring channel 7 be in communication with the outside
Line outlet 10, data line 19 pass through wiring channel 7 inside strain ball 8 and are pierced by by line outlet 10, convenient for the extraction of data line 19,
Glue channel 3 is led to connect with plastic emitting aperture 2.Propeller includes piston 16, shell, dumping directional hole 13, is equipped with cavity 14 in shell,
16 one end of piston is slidably matched with cavity 14, and the other end is connect with mounting rod 17, and the dumping directional hole 13 is arranged on shell,
Cavity 14 is connected to by dumping directional hole 13 with glue channel 3 is led, and bonding agent is marked in the cavity 14, and bonding agent is epoxy resin.
Piston 16 and inner walls junction are equipped with the sealing ring 9 for sealing, and it is O-shaped that sealing ring 9 here can be traditional sealing
Circle (when pushing piston 16,9 position of sealing ring is constant), is also possible to be set in 16 outer wall of piston and 14 wall of cavity is close-fitting
Component (when pushing piston 16, sealing ring 9 is with 16 synchronizing moving of piston), shell is equipped with the fixed pin 15 for preventing piston 16 from deviating from,
Piston 16 is stuck in initial position by the fixed pin 15, in use, pushing piston 16, piston 16 breaks the resistance of fixed pin 15, will
Epoxy resin in cavity 14 is along dumping directional hole 13 and leads glue channel 3 and is discharged by plastic emitting aperture 2, so that strain ball 8 be bonded
On hole wall, the fixation of strain ball 8 is completed, the plastic emitting aperture 2 being arranged symmetrically can guarantee the point stress balance of bonding, guarantee strain
Ball 8 consolidates so that measurement is accurate.
Utility model device further includes drilling director 18, and drilling director 18 is in the form of annular discs, and mounting rod 17 is coaxially worn
Drilling director 18 is crossed, the drilling director 18 is equipped with for the wire guide 20 across data line 19.In this way, data line 19 is logical
The wire guide 20 crossed in wiring channel 7, line outlet 10 and drilling director 18 picks out data line 19 outside drilling.
The measurement method of the utility model measuring device: progress addressing first determines installation site, is considered as following
Aspect: (1) quality of rock mass.Measuring point surrounding rock body makes every effort to that homogeneous is complete, and boring positioning is in the rocks, to guarantee coring
The confidence level of integrality and geostress survey result.(2) close to research object.According to geological structure data, measuring point is answered locatingly
Answer representative in the field of force.(3) the lane cave engineering for avoiding neighbouring hot work in progress, avoids stress distortion area, range of instability and interference
Source guarantees the authenticity of the stress of primary rock.(4) influence of the tomography to measured value is avoided.The result of actual measurement shows that near major fault,
Not only horizontal stress value is relatively low, and can also interfere with the direction of principal stress.(5) consider test condition.For example whether have water,
The conditions such as electricity, if mutually conflict with normal production, construction, if having the necessary space of test, (drilling machine supporting and space arranges instrument
The space etc. of device equipment).(6) elevation angle of drilling at least 3-5 degree, to drain.Specific step is as follows:
Step S1, drilling beat first segment macropore using the brill of φ (75~130) mm, and the depth of first segment macropore is section
2-3 times of diameter, throws the second segment aperture of 25-30cm into using the brill of φ 36mm again, and second segment aperture and first segment macropore are same
The heart, then aperture mill is proceeded to by few 36mm using hemispherical hone 21 and forms grinding out.Hemispherical hone 21 is cylindric in class, in
The heart is equipped with axis hole, and top is in arc-shaped, shows with reference to attached drawing 5, is to guarantee spherical backpack body with 21 grinding out of hemispherical hone
Measuring device installation is preferably contacted with country rock in hole.
Step S2 is installed for the first time, spherical backpack body measuring device is accurately packed into, the strain ball 8 of measuring device is placed in mill
Hole center, strain ball 8 outer wall should be in close contact with the hole wall of grinding out, promotion piston 16 by bonding agent along dumping directional hole 13,
It leads glue channel 3 to be discharged by plastic emitting aperture 2, strain ball 8 is bonded on hole wall.The installation of spherical backpack body, spherical backpack body crustal stress
Measurement sensor should accurately enter measurement small bore to predetermined depth and be located at the center of small bore, the sensor equipped with contact,
Contact should be in close contact with hole wall, should be cementing close with hole wall using the sensor of binder installation.
Step S3, first time sets of holes stress relieving and data acquisition, after the installation for 24 hours of spherical backpack body, binder is completely solid
Change, diameter is used to spud in for the brill of φ (75~130) mm along macropore bottom, rate of penetration 10~20mm per minute is carried out spherical
Backpack body releases, and carries out data acquisition simultaneously.Until releasing length view drilling inner cores disconnect automatically, within generally 1m.
Step S4, second of measurement carry out grinding out using hemispherical hone 21 on the basis of after first time releases,
Depth is generally 10cm, throws the second segment aperture of 25-30cm, second segment aperture and first segment macropore into again using the brill of φ 36mm
With one heart, then aperture mill is proceeded to by few 36mm using hemispherical hone 21 and forms grinding out.Hemispherical hone 21 is cylindric in class,
Center is equipped with axis hole, and top is in arc-shaped, shows with reference to attached drawing 5, is to guarantee spherical packet with 21 grinding out of hemispherical hone
Fluid measurement device installation is preferably contacted with country rock in hole.
Step S5, second of installation, spherical backpack body measuring device is accurately packed into, the strain ball 8 of measuring device is placed in mill
Hole center, strain ball 8 outer wall should be in close contact with the hole wall of grinding out, promotion piston 16 by bonding agent along dumping directional hole 13,
It leads glue channel 3 to be discharged by plastic emitting aperture 2, strain ball 8 is bonded on hole wall.The installation of spherical backpack body, spherical backpack body crustal stress
Measurement sensor should accurately enter measurement small bore to predetermined depth and be located at the center of small bore, the sensor equipped with contact,
Contact should be in close contact with hole wall, should be cementing close with hole wall using the sensor of binder installation.
Step S6, second of sets of holes stress relieving and data acquisition, after the installation for 24 hours of spherical backpack body, binder is completely solid
Change, diameter is used to spud in for the brill of φ (75~130) mm along macropore bottom, rate of penetration 10~20mm per minute is carried out spherical
Backpack body releases, and carries out data acquisition simultaneously.Until releasing length view drilling inner cores disconnect automatically, within generally 1m.
Step S7 measures for third time, repeats secondary operation, until data acquisition terminates.
The core of three sections of balls containing stress measurement of releasing is carried out country rock calibration test, measures Rock Poisson Ratio Using by step S8
And elasticity modulus.
The data acquired every time imported into analysis software, are analyzed by step S9, data analysis, obtain every time true
Stress of primary rock distribution situation under three-dimensional condition.The protolith under true three-dimensional condition will be obtained after data are weighted and averaged three times
Stress distribution situation completes measurement work.It is measured, is measured with average value three times, avoid one-shot measurement data inaccuracy
It happens, guarantees the real effectiveness of DATA REASONING.
The utility model realizes very three-dimensional Rock stress measurement work, special since the measurement of initial rock stress field is considerably complicated
It is not the influence of multiple tectonic activity, the present apparatus and method solve the problems, such as the measurement of complicated initial rock stress field.The present apparatus is from appearance
It is upper to use spherical designs, it is ensured that in stress of primary rock perpendicular acting to stress section；The present apparatus is from stress section arrangement using very three-dimensional
Design, in same orientation, there are two stress sections up to few, it is ensured that the accuracy of the data of measurement and very three-dimensionality；The present apparatus and side
The data of method from measurement are very three-dimensionality, provide theory analysis basis for stress of primary rock spatial evolution rule；The present apparatus and method are surveyed
Fixed accurate three-dimensional initial rock stress field can effectively avoid the generation and targeted design scheme of accident potential, ensure safe and reliable
And technical feasibility, hence it is evident that reduce economic input.
The above is only the preferred embodiment of the utility model, not makees in any form to the utility model
Limitation, although the utility model has been disclosed with preferred embodiment as above, is not intended to limit the utility model, any to be familiar with
The technical staff of this patent is not departing within the scope of technical solutions of the utility model, when the technology contents work using above-mentioned prompt
A little equivalent embodiment changed or be modified to equivalent variations out, but all contents without departing from technical solutions of the utility model,
Any simple modification, equivalent change and modification made by the above technical examples according to the technical essence of the present invention, still belong to
In the range of the utility model.
Claims (8)
1. a kind of very three-dimensional stress of primary rock overcoring method measuring device of spherical shape backpack body, which is characterized in that including strain ball and strain ball
The propeller of connection, the strain ball are spherical, and the periphery wall for straining ball is equipped with several foil gauges, several plastic emitting apertures, are answered
Become piece to be electrically connected by data line with receiver, the strain ball is connect by sphere connecting rod with propeller, sphere connecting rod
Ball is vertical connect with strain, the sphere connecting rod is equipped with wiring channel, axially penetrate through lead glue channel, by wiring channel and outer
The line outlet of boundary's connection, data line pass through wiring channel inside strain ball and are pierced by by line outlet, lead glue channel and plastic emitting aperture
Connection, the propeller include piston, shell, dumping directional hole, cavity are equipped in shell, piston one end is matched with cavity sliding
It closes, the other end is connect with mounting rod, and the dumping directional hole is arranged on shell, and dumping directional hole is by cavity and leads glue channel company
It is logical, bonding agent is marked in the cavity.
2. the very three-dimensional stress of primary rock overcoring method measuring device of a kind of spherical backpack body according to claim 1, which is characterized in that
The diameter of the strain ball is 36mm, and the diameter of sphere is 34mm, and outer surface of spheroid is coated with the anti-corrosion waterproof of one layer of 1mm thickness
Layer, the propeller is cylindrical or class is cylindric, and diameter or circumference are less than or equal to 36mm to outer diameter.
3. the very three-dimensional stress of primary rock overcoring method measuring device of a kind of spherical backpack body according to claim 2, which is characterized in that
The sphere is titanium-aluminium alloy sphere, and the anti-corrosion waterproof layer is epoxy resin layer.
4. the very three-dimensional stress of primary rock overcoring method measuring device of a kind of spherical backpack body according to claim 1, which is characterized in that
The foil gauge is self-temperature-compensated strain ga(u)ge, and the foil gauge is 21, wherein sphere equatorial plane is equipped with 7, with sphere
Connecting rod is uniformly distributed along 360 °；60 ° of planes of north and south latitude of sphere are respectively arranged 6, and 60 ° are mutually between each foil gauge；The north and south of sphere
A foil gauge is respectively arranged in pole.
5. the very three-dimensional stress of primary rock overcoring method measuring device of a kind of spherical backpack body according to claim 1, which is characterized in that
The plastic emitting aperture is two, and is arranged symmetrically in the two sides of strain ball vertical line, and the bonding agent is epoxy resin.
6. the very three-dimensional stress of primary rock overcoring method measuring device of a kind of spherical backpack body according to claim 1, which is characterized in that
The sphere connecting rod and propeller are clamped, and sphere connecting rod is equipped with fixing card far from one end of strain ball, and propeller, which is equipped with, to be connected
Device is connect, connector is connect with shell close to the end of strain ball, and connector is equipped with the connecting pin cooperated with fixing card.
7. the very three-dimensional stress of primary rock overcoring method measuring device of a kind of spherical backpack body according to claim 1, which is characterized in that
The piston and inner walls junction are equipped with the sealing ring for sealing, and the shell is equipped with the fixation for preventing piston from deviating from
Pin.
8. the very three-dimensional stress of primary rock overcoring method measuring device of a kind of spherical backpack body according to claim 1, which is characterized in that
It further include drilling director, drilling director is in the form of annular discs, and mounting rod coaxially passes through drilling director, and the drilling director is set
There is the wire guide for passing through data line.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920518953.5U CN209485588U (en) | 2019-04-17 | 2019-04-17 | A kind of very three-dimensional stress of primary rock overcoring method measuring device of spherical shape backpack body |
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|---|---|---|---|
| CN201920518953.5U CN209485588U (en) | 2019-04-17 | 2019-04-17 | A kind of very three-dimensional stress of primary rock overcoring method measuring device of spherical shape backpack body |
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| CN209485588U true CN209485588U (en) | 2019-10-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109946008A (en) * | 2019-04-17 | 2019-06-28 | 中南大学 | A kind of very three-dimensional stress of primary rock overcoring method measuring device and measuring method of spherical shape backpack body |
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2019
- 2019-04-17 CN CN201920518953.5U patent/CN209485588U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109946008A (en) * | 2019-04-17 | 2019-06-28 | 中南大学 | A kind of very three-dimensional stress of primary rock overcoring method measuring device and measuring method of spherical shape backpack body |
| CN109946008B (en) * | 2019-04-17 | 2024-05-28 | 中南大学 | Device and method for measuring stress relief method of spherical inclusion true three-dimensional original rock |
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Granted publication date: 20191011 Termination date: 20200417 |