CN204630758U - A kind of detecting earth stress secondary variable-angle coring device - Google Patents
A kind of detecting earth stress secondary variable-angle coring device Download PDFInfo
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- CN204630758U CN204630758U CN201520069213.XU CN201520069213U CN204630758U CN 204630758 U CN204630758 U CN 204630758U CN 201520069213 U CN201520069213 U CN 201520069213U CN 204630758 U CN204630758 U CN 204630758U
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- rock sample
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Abstract
The utility model provides a kind of detecting earth stress secondary variable-angle coring device, the utility model can well obtain the experimental data in multiple directions, the crustal stress states of the RMT pressing machine of Binding experiment room and Acoustic Emission Testing System precise restoration rock sample as far as possible.This device comprises rock sample and places sleeve, bracing frame, support stick, base, rock sample stationary installation.Parallel to five holes should be had on bracing frame, connected by support stick.Rock sample placement sleeve is corresponding respectively from bottom to up when contacting with corresponding support stick becomes 15 °, 30 °, 45 °, 60 °, 75 ° with base plane.Conveniently sample, when avoiding sampling, bit contact places sleeve to rock sample, and slotted eye is placed on inside sleeve.Utilize design feature of the present utility model, the core of XY, YZ, XZ tri-particular orientation can be drilled through, the terrestrial stress of correspondence direction can be obtained, and then calculate Three-dimensional Rock stress state accurately.
Description
Technical field:
The utility model relates to a kind of detecting earth stress secondary variable-angle coring device, it is applicable to the core that laboratory drills through multiple particular orientation, and then the terrestrial stress of RMT pressing machine and acoustic emission test system testing rock all directions in space can be utilized in laboratory, the as far as possible accurately stress state truly of study of rocks sample.
Background technology:
Rock mass terrestrial stress, also referred to as rock mass primary stress, absolute stress or the initial stress, at engineering circles also known as Original strata stress, is under native state, is present in the natural stress not by Engineering Disturbance in stratum body inside.Rock mass terrestrial stress is three-dimensional stress constraint, is generally compressive stress.Terrestrial stress is the basic acting force causing underworkings excavation project deformation and failure, determine roadway surrounding rock mechanical attribute, carry out Stability Analysis of The Surrounding Rock, realize tunnel axis direction selection, cross-section shape of roadway, supported design or engineering excavation design and the prerequisite of the scientification of decision-making.The object of detecting earth stress is to understand the stress intensity and direction that exist in rock mass, thus improves foundation for the stress of analyzing rock mass engineering project and for supporting and rock mass reinforcing.Therefore, inquire into terrestrial stress, to the engineering geological problems that roadway construction and operation may bring, there is important theory significance and realistic meaning.
Since the eighties in last century, there is the method such as hydraulic fracturing, stress (strain) overcoring method for detecting earth stress.But these methods complete all at the scene, workload is large, and complex process, limits the use in geostress survey to a certain extent.It is a kind of easy and simple to handle, cost is low, speed is fast, site work amount is few method that terrestrial stress is measured in acoustic emission, is used widely in geostress survey.Be subject to the restriction of equipment and technical merit for Acoustic Emission In Laboratory geostress survey domestic at present, often can not accurately obtain the three-dimensional stress constraint of rock mass.Mainly due on existing core-drill(ing) machine basis, the core of some special angle cannot be obtained, and then corresponding principle stress size and Orientation can not be calculated, the three-dimensional stress constraint of virgin rock [mass cannot be gone back accurately.
Utility model content:
The utility model proposes a kind of detecting earth stress secondary variable-angle coring device, it is the drawback that can only drill through the core in 3 directions of right cylinder rock sample in order to solve domestic existing core-drill(ing) machine, i.e. X, Y, Z-direction (supposition cylinder axis is to being Y-direction in advance, and the both direction of vertical cylindrical body axial direction section is respectively X and Z-direction).
The utility model comprises that rock sample is placed sleeve, determined angle hole, changes hands, test specimen supporting plate, support stick, slotted eye, bracing frame, device pedestal, rock sample stationary installation; Described rock sample is placed sleeve and is connected with base by changing hands, support frame as described above and device pedestal are by welding together, described slotted eye is in rock sample and places inside sleeve, bit contact is avoided to place sleeve to rock sample when taking out core to allow drill bit, described rock sample stationary installation can by tightening the nut of side and screw rod clamping rock sample, and place sleeve by the hinging pin shaft of side and rock sample and weld together.Parallel to five holes should be had on support frame as described above, connected by support stick.Rock sample placement sleeve is corresponding respectively from bottom to up when contacting with corresponding support stick becomes 15 °, 30 °, 45 °, 60 °, 75 ° angles with base plane.
A kind of detecting earth stress secondary variable-angle coring device, is characterized in that: rock sample is placed sleeve (6) and is connected with base (10) by changing hands (15), free to rotate.Rock sample is placed on sleeve (6) and is designed with slotted eye (11) and test specimen supporting plate (16), bracing frame (7) is connected with base (10) by the mode of welding, form rock sample stationary installation, support stick (14) can freely insert determines angle hole (13).Rock sample is supported by support stick (14) when placing sleeve (6) work.Described test specimen supporting plate is welded on rock sample and places on sleeve (6), facilitates fixing and preventing the destruction in addition because discontinuity bottom test specimen produces of test specimen.
The advantage that the utility model has and good effect are: utilize the design feature that this is novel, the core of XY, YZ, XZ tri-particular orientation different angles can be drilled through, the stress of correspondence direction can be obtained by experiment, and then obtain Three-dimensional Rock stress state accurately.
Accompanying drawing illustrates:
Fig. 1 is that existing core drills through installation drawing;
Fig. 2 existingly determines angle core sampling device;
Fig. 3 is quarter view of the present utility model;
Fig. 4 is that sleeve vertical view placed by rock sample of the present utility model;
In figure: 1-core-drill(ing) machine drill bit; The horizontal clamping device of 2-; 3-clamps backing plate; 4-nut; 5-screw rod; Sleeve placed by 6-rock sample; 7-bracing frame; 8-rock sample stationary installation; 9-hinging pin shaft; 10-device pedestal; 11-slotted eye; 12-rock sample; 13-determines angle hole; 14-support stick; 15-changes hands; 16-test specimen supporting plate.
Embodiment:
For summary of the invention of the present utility model, Characteristic can be understood further, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
The utility model is a kind of core secondary variable-angle device, and existing core-drill(ing) machine can be assisted to drill through the core of 3 particular orientation, is YZ, XY, XZ direction core respectively.And existing core-drill(ing) machine can only drill through X, Y, Z tri-directions, the introduction of lower mask body drills through the process of three particular orientation cores.
First rock sample 12 is placed on rock sample of the present utility model to place in sleeve 6, and utilizes rock sample stationary installation 8 fastening nut 4 to fix rock sample, be then placed between horizontal clamping device 2 by the utility model device, be fixed jail.Core-drill(ing) machine drill bit 1 above the utility model in vertical state, for core-drilling.By rotating the position of rock sample 12 in rock sample placement sleeve 6, drill through different directions core, as shown in Figure 2.The sample in each direction, by changing support stick in the change determining the insertion position in angle hole, obtains the rock sample of different angles.After obtaining core, open stationary installation 8, remove unnecessary part.After completing above-mentioned steps, change the insertion position of support stick, obtain the rock sample of required different directions different angles.The insertion of support stick and take out very convenient, there is a pin its one end, can prevent in the course of the work support stick from determining landing angle hole.
The rock sample of three particular orientation is taken out by above-mentioned steps, in conjunction with X, Y, Z tri-direction rock samples that existing rig gets out, utilize the principle stress size of Acoustic Emission Testing System and RMT pressing machine test rock sample respective direction, thus obtain rock mass three-dimensional stress constraint accurately.
Claims (5)
1. a detecting earth stress secondary variable-angle coring device, is characterized in that: rock sample is placed sleeve (6) and is connected with base (10) by changing hands (15), free to rotate; Rock sample is placed on sleeve (6) and is designed with slotted eye (11) and test specimen supporting plate (16), bracing frame (7) is connected with base (10) by the mode of welding, form rock sample stationary installation, support stick (14) can freely insert determines angle hole (13); Rock sample is supported by support stick (14) when placing sleeve (6) work.
2. a kind of detecting earth stress secondary variable-angle coring device according to claim 1, it is characterized in that: the upper symmetry of bracing frame (7) has five holes, support stick (14) can parallel insertion wherein, respectively corresponding rock sample is placed sleeve (6) and is become 15 °, 30 °, 45 °, 60 °, 75 ° angles with base plane from bottom to up.
3. a kind of detecting earth stress secondary variable-angle coring device according to claim 1, is characterized in that: described slotted eye is in rock sample and places inside sleeve, avoids bit contact to place inside sleeve to rock sample when taking out core to allow drill bit.
4. a kind of detecting earth stress secondary variable-angle coring device according to claim 1, it is characterized in that: described rock sample stationary installation can by tightening the nut of side and screw rod clamping rock sample, and place sleeve by the hinging pin shaft of side and rock sample and weld together.
5. a kind of detecting earth stress secondary variable-angle coring device according to claim 1, it is characterized in that: described test specimen supporting plate is welded on rock sample and places on sleeve (6), facilitate fixing and preventing the destruction in addition because discontinuity bottom test specimen produces of test specimen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520069213.XU CN204630758U (en) | 2015-01-30 | 2015-01-30 | A kind of detecting earth stress secondary variable-angle coring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520069213.XU CN204630758U (en) | 2015-01-30 | 2015-01-30 | A kind of detecting earth stress secondary variable-angle coring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204630758U true CN204630758U (en) | 2015-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520069213.XU Expired - Fee Related CN204630758U (en) | 2015-01-30 | 2015-01-30 | A kind of detecting earth stress secondary variable-angle coring device |
Country Status (1)
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| CN (1) | CN204630758U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107402288A (en) * | 2017-08-18 | 2017-11-28 | 中国矿业大学(北京) | A kind of coal Burst Tendency method of testing based on stratification effect |
| CN107725048A (en) * | 2017-11-22 | 2018-02-23 | 中南大学 | A kind of sample machining device using inclined drill core testing level crustal stress |
| CN109883785A (en) * | 2019-02-28 | 2019-06-14 | 西安科技大学 | A kind of stratiform Embedded defect coal and rock sample preparation device and method based on 3D printing |
| CN110118669A (en) * | 2019-05-22 | 2019-08-13 | 中国科学院武汉岩土力学研究所 | A kind of device drilling through rock core for the default angle of rock mechanics laboratory |
| CN113108957A (en) * | 2021-03-18 | 2021-07-13 | 西南石油大学 | Rock core testing and extracting method for paleotectonic period ground stress |
| CN115522921A (en) * | 2022-11-25 | 2022-12-27 | 云南省交通发展投资有限责任公司 | System and method for measuring ground stress of ultra-deep drilling hole |
-
2015
- 2015-01-30 CN CN201520069213.XU patent/CN204630758U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107402288A (en) * | 2017-08-18 | 2017-11-28 | 中国矿业大学(北京) | A kind of coal Burst Tendency method of testing based on stratification effect |
| CN107725048A (en) * | 2017-11-22 | 2018-02-23 | 中南大学 | A kind of sample machining device using inclined drill core testing level crustal stress |
| CN107725048B (en) * | 2017-11-22 | 2019-11-15 | 中南大学 | A kind of sample machining device using inclined drill core testing level crustal stress |
| CN109883785A (en) * | 2019-02-28 | 2019-06-14 | 西安科技大学 | A kind of stratiform Embedded defect coal and rock sample preparation device and method based on 3D printing |
| CN110118669A (en) * | 2019-05-22 | 2019-08-13 | 中国科学院武汉岩土力学研究所 | A kind of device drilling through rock core for the default angle of rock mechanics laboratory |
| CN110118669B (en) * | 2019-05-22 | 2020-02-14 | 中国科学院武汉岩土力学研究所 | Device for drilling and taking rock core at fixed angle in rock mechanics laboratory |
| CN113108957A (en) * | 2021-03-18 | 2021-07-13 | 西南石油大学 | Rock core testing and extracting method for paleotectonic period ground stress |
| CN113108957B (en) * | 2021-03-18 | 2021-11-30 | 西南石油大学 | Rock core testing and extracting method for paleotectonic period ground stress |
| US11372121B1 (en) * | 2021-03-18 | 2022-06-28 | Southwest Petroleum University | Method for testing and extracting paleo-tectonic geostress based on rock core |
| CN115522921A (en) * | 2022-11-25 | 2022-12-27 | 云南省交通发展投资有限责任公司 | System and method for measuring ground stress of ultra-deep drilling hole |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20160130 |
|
| EXPY | Termination of patent right or utility model |