CN104359770A - Supporting device of plane shearing head of rock structural surface direct shear device for circular structural surface samples and direct shear test method - Google Patents
Supporting device of plane shearing head of rock structural surface direct shear device for circular structural surface samples and direct shear test method Download PDFInfo
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- CN104359770A CN104359770A CN201410524226.1A CN201410524226A CN104359770A CN 104359770 A CN104359770 A CN 104359770A CN 201410524226 A CN201410524226 A CN 201410524226A CN 104359770 A CN104359770 A CN 104359770A
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Abstract
The invention discloses a supporting device of a plane shearing head of a rock structural surface direct shear device for circular rock structural surface samples. The supporting device comprises the plane shearing head and a shearing cylinder, wherein the plane shearing head is mounted at the operating end of the shearing cylinder; the supporting device of the plane shearing head of the rock structural surface direct shear device comprises a square fixed framework and fastening devices; the square fixed framework comprises a lower layer square fixed frame and an upper layer square fixed frame; the lower layer square fixed frame is positioned above the upper layer square fixed frame and is mutually and fixedly connected with the upper layer square fixed frame; position cavities used for laying the circular rock structural surface samples to be tested are formed inside the upper layer square fixed frame and the lower layer square fixed frame; bolt holes are formed in middles of four sides of the upper layer square fixed frame; the fastening devices are fastening bolts; the fastening bolts penetrate the bolt holes and are supported on the circular rock structural surface samples to be tested. The invention also discloses a direct shear test method of circular rock structural surfaces. The supporting device can test the circular rock structural surface samples, and has the characteristics of high convenience in operation, low cost, high speed and high precision in test results.
Description
Technical field
The present invention relates to the rock structural face direct shear apparatus plane shear head corollary apparatus for circular rock structural face sample and direct shear test method, be applicable to circular rock structural face sample direct shear test.The invention belongs to field of engineering technology.
Background technology
Direct shear test is the main experimental means obtaining Shear Strength along Rock Stratum Plane mechanical index.Because the cutting head of existing rock structural face direct shear apparatus is plane, therefore, it is rock structural face that is square or rectangle that conventional rock structural face direct shear apparatus is mainly applicable to flat shape, and is that circular configuration interview sample cannot utilize the rock structural face direct shear apparatus that existing cutting head side is plane to carry out direct shear test for profile.In order to test circular configuration interview sample shearing strength, Normal practice adopts cutting machine that circular configuration interview sample is cut into square or rectangle could be used for the conventional rock structural face direct shear apparatus with plane shear head, such process not only expense is large, long in time limit, operating difficulties, and there is anisotropic properties due to structural plane, square or rectangular configuration face can only be tested and parallel with sample lateral surface or the shearing strength of vertical direction, and the shearing strength of structural plane all directions cannot be obtained, therefore the anisotropic properties of Shear Strength along Rock Stratum Plane cannot also just be obtained, also just the weakest glide direction of rock mass discontinuity can not be obtained.
Summary of the invention
In order to solve the existing rock structural face direct shear apparatus with plane shear head, can only to test profile be shearing strength that is square or rectangular configuration face, and the deficiency that flat shape is circular configuration face shearing strength cannot be measured, the invention provides a kind of plane shear head corollary apparatus for circular configuration interview sample and direct shear test method, the plane shear head of this device and rock structural face direct shear apparatus matches, the shearing strength direct shear test utilizing existing conventional rock structural face direct shear apparatus to carry out circular configuration interview sample can be solved, not only can test the circular configuration interview sample of multiple yardstick (100mm-1000mm), and have easy to operate, expense is low, speed is fast, the feature that test result precision is high.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of rock structural face direct shear apparatus plane shear head corollary apparatus for circular configuration interview sample, described rock structural face direct shear apparatus comprises plane shear head and shears oil cylinder, the motion end of described shearing oil cylinder installs described plane shear head, described direct shear apparatus plane shear head corollary apparatus comprises square fixed frame and fastener, described square fixed frame comprises the square fixed frame of the square fixed frame of lower floor and upper strata, the square fixed frame of described lower floor is positioned at the top of the square fixed frame in upper strata and is mutually permanently connected, the inside of described upper strata fixed frame and lower floor's fixed frame is the station cavity for placing circular rock structural face sample to be tested, the centre position on four limits of the square fixed frame in described upper strata has bolt hole, and described fastener is fastening bolt, and described fastening bolt is supported on circular rock structural face sample to be tested through described bolt hole.
Further, four angles of the square fixed frame in described upper strata also have bolt hole.The inside of spiro keyhole position square fixed frame in upper strata, bolt length can carry out choose reasonable according to the size of circular rock structural face sample.
A direct shear test method for circular rock structural face sample, said method comprising the steps of:
A () selects the circular rock structural face sample with setting size that will test;
B () measures the height of direct shear apparatus plane shear head, and make marks at the identical height and position place of rock structural face sample;
C () utilizes boom hoisting the square fixed frame of square for upper strata fixed frame and lower floor to be positioned over the mark of rock structural face sample from sample top;
D (), according to the size of sample, selects corresponding fastening bolt length;
E () is each passed through bolt hole with fastening bolt until the end of bolt contacts with circular rock structural face sample outside surface and tightens;
F () is positioned over circular rock structural face sample in rock structural face direct shear apparatus together with the corollary apparatus of plane shear head, carry out direct shear test, obtain the shearing strength of circular rock structural face according to rock structural face direct shear test code.
Further, described method is further comprising the steps of: (g) is in order to obtain the shearing strength of multiple shear direction, fastening bolt is loosened, the position of rotational structure interview sample is to the shear direction needing test, repeatedly repeat the shearing strength that step (b) to (f) just obtains the multiple shear direction of this rock structural face, obtain the anisotropic properties of this rock structural face.
Beneficial effect of the present invention is mainly manifested in: the rock structural face direct shear apparatus plane shear head corollary apparatus that The present invention gives circular configuration interview sample, can coordinate the shearing strength of the multiple dimensioned circular rock structural face sample of the plane shear head test series of direct shear apparatus.This corollary apparatus and direct shear test method tool have the following advantages: (1) is easy to operate, cost is low, the duration is short; (2) range of size of testable circular configuration interview sample is 100mm ~ 1000mm; (3) direction, rotational structure face is only needed, just can the anisotropic properties of test structure face shearing strength, and this device is without the need to sample preparation evolution, stringency of test is high.
Accompanying drawing explanation
Fig. 1 is the structural drawing of the plane shear head corollary apparatus for circular configuration interview sample.
Fig. 2 is the vertical view of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Embodiment 1
See figures.1.and.2, a kind of rock structural face direct shear apparatus plane shear head corollary apparatus for circular rock structural face sample, described rock structural face direct shear apparatus comprises plane shear head 5 and shears oil cylinder 6, the motion end of described shearing oil cylinder 6 installs described plane shear head 5, described direct shear apparatus plane shear head corollary apparatus comprises square fixed frame and fastener, described square fixed frame comprises the square fixed frame 2 of the square fixed frame of lower floor 1 and upper strata, the square fixed frame of described lower floor 1 is positioned at the below of the square fixed frame 2 in upper strata and is mutually permanently connected, the inside of described upper strata fixed frame 2 and lower floor's fixed frame 1 is the station cavity for placing circular rock structural face sample 7 to be tested, the centre position on four limits of the square fixed frame 2 in described upper strata has bolt hole 3, and described fastener is fastening bolt 4, and described fastening bolt 4 is supported on circular rock structural face sample 7 to be tested through described bolt hole 3.
Further, four angles of the square fixed frame 2 in described upper strata also have bolt hole.The inside of spiro keyhole position square fixed frame in upper strata, the length of bolt can carry out choose reasonable according to the size of circular rock structural face sample.
The square fixed frame of levels is fixed together by welding, and also can adopt other fixed forms.
Embodiment 2
See figures.1.and.2, a kind of direct shear test method of circular rock structural face sample, said method comprising the steps of:
A () selects the circular rock structural face sample 7 of the setting size that will test;
B () measures the height of direct shear apparatus plane shear head 5, and make marks at the identical height and position place of rock structural face sample;
C () utilizes boom hoisting that the square fixed frame 1 of square for upper strata fixed frame 2 and lower floor to be positioned over the mark (b) outside sample from rock structural face sample top;
D (), according to the size of sample, selects corresponding fastening bolt 4 length;
E () is each passed through bolt hole 3 with fastening bolt 4 until the end of bolt contacts with circular rock structural face sample 7 outside surface and tightens;
F () is positioned over circular rock structural face sample in rock structural face direct shear apparatus together with the corollary apparatus of plane shear head, carry out direct shear test according to direct shear test code, obtains the shearing strength of circular rock structural face.
Further, described method is further comprising the steps of: (g), in order to obtain the shearing strength of multiple shear direction, fastening bolt is loosened, the position in rotational structure face is to the shear direction needing test, repeatedly repeat the shearing strength that step (b) to (f) just obtains the multiple shear direction of this rock structural face, obtain the anisotropic properties of this rock structural face.
Certain rock mass engineering project is in order to obtain the anisotropic properties of Shear Strength along Rock Stratum Plane, make circular configuration interview sample, but the cutting head of existing direct shear apparatus is plane, the shearing strength direct shear test of circular rock structural face sample cannot be carried out, therefore just need the direct shear apparatus plane shear head corollary apparatus adopting circular rock structural face sample.
To obtain the circular Shear Strength along Rock Stratum Plane that diameter is the different tests direction of 300mm, embodiment of the present invention are:
A () selects the diameter that will test to be the rock structural face sample of 300mm.
B () measures the height of rock structural face direct shear apparatus plane shear head 5, and make marks at the identical height and position place of rock structural face sample 7.
C () utilizes boom hoisting that the square fixed frame 2 of square for upper strata fixed frame 1 and lower floor to be positioned over the mark that sample (b) does from rock structural face sample top.
D (), according to the size of sample, selects 8 corresponding fastening bolt length.
E () is each passed through corresponding bolt hole 3 with 8 fastening bolts 4 until the end of bolt contacts with sample outside surface and tightens.
F () to be positioned over circular configuration interview sample in direct shear apparatus together to the corollary apparatus of plane shear head just can carry out direct shear test according to corresponding direct shear test code, obtains the shearing strength of circular rock structural face.
G () will obtain the shearing strength of multiple shear direction, only bolt 4 need be loosened, the position in rotational structure face is to the shear direction needing test, repeatedly repeat the shearing strength that step (b) to (f) can obtain the multiple shear direction of this rock structural face, and then the anisotropic properties of this rock structural face can be analyzed.
Claims (4)
1. the rock structural face direct shear apparatus plane shear head corollary apparatus for circular rock structural face sample, it is characterized in that: described rock structural face direct shear apparatus comprises plane shear head and shears oil cylinder, the motion end of described shearing oil cylinder installs described plane shear head, described direct shear apparatus plane shear head corollary apparatus comprises square fixed frame and fastener, described square fixed frame comprises the square fixed frame of the square fixed frame of lower floor and upper strata, the square fixed frame of described lower floor is positioned at the top of the square fixed frame in upper strata and is mutually permanently connected, the inside of described upper strata fixed frame and lower floor's fixed frame is the station cavity for placing circular rock structural face sample to be tested, the centre position on four limits of the square fixed frame in described upper strata has bolt hole, and described fastener is fastening bolt, and described fastening bolt is supported on circular rock structural face sample to be tested through described bolt hole.
2., as claimed in claim 1 for the direct shear apparatus plane shear head corollary apparatus of circular rock structural face sample, it is characterized in that: four angles of the square fixed frame in described upper strata also have bolt hole.
3., with the direct shear test method that the rock structural face direct shear apparatus plane shear head corollary apparatus for circular rock structural face sample as claimed in claim 1 realizes, it is characterized in that: said method comprising the steps of::
A () selects the circular rock structural face sample with setting size that will test;
B () measures the height of direct shear apparatus plane shear head, and make marks at the identical height and position place of rock structural face sample;
C () utilizes boom hoisting the square fixed frame of square for upper strata fixed frame and lower floor to be positioned over the mark of rock structural face sample from sample top;
D (), according to the size of sample, selects corresponding fastening bolt length;
E () is each passed through bolt hole with fastening bolt until the end of bolt contacts with circular rock structural face sample outside surface and tightens;
F () is positioned over circular rock structural face sample in rock structural face direct shear apparatus together with the corollary apparatus of plane shear head, carry out direct shear test, obtain the shearing strength of circular rock structural face according to rock structural face direct shear test code.
4. direct shear test method as claimed in claim 3, is characterized in that: described method is further comprising the steps of:
(g), in order to obtain the shearing strength of multiple shear direction, fastening bolt is loosened, the position of rotational structure interview sample is to the shear direction needing test, repeatedly repeat the shearing strength that step (b) to (f) just obtains the multiple shear direction of this rock structural face, obtain the anisotropic properties of this rock structural face.
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| CN104749049A (en) * | 2015-04-21 | 2015-07-01 | 武汉理工大学 | Rock mass structural surface shear test method and device |
| CN106932283A (en) * | 2017-04-25 | 2017-07-07 | 中国地质大学（武汉） | A kind of research structure interviews the anisotropic direct shear apparatus fixing device of sample and its method |
| CN106959229A (en) * | 2017-03-06 | 2017-07-18 | 浙江科技学院 | Meet the making mould of the irregular protolith structural fece sample of indoor direct shear test requirement |
| CN107576561A (en) * | 2017-10-24 | 2018-01-12 | 中水北方勘测设计研究有限责任公司 | Shearing force box for the experiment of rock direct shear strength |
| CN107976359A (en) * | 2017-12-15 | 2018-05-01 | 浙江科技学院 | Based on the more dimensional structure face shear boxs of standard block limited block assembly type |
| CN108072574A (en) * | 2017-12-11 | 2018-05-25 | 中国科学院地质与地球物理研究所 | It tests rock mass discontinuity and shears anisotropic shear box |
| CN110487617A (en) * | 2019-09-10 | 2019-11-22 | 中国科学院武汉岩土力学研究所 | The auxiliary fabricated device and its application method of structural fece sample in indoor shearing test |
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| CN104749049A (en) * | 2015-04-21 | 2015-07-01 | 武汉理工大学 | Rock mass structural surface shear test method and device |
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| CN106959229A (en) * | 2017-03-06 | 2017-07-18 | 浙江科技学院 | Meet the making mould of the irregular protolith structural fece sample of indoor direct shear test requirement |
| CN106932283A (en) * | 2017-04-25 | 2017-07-07 | 中国地质大学（武汉） | A kind of research structure interviews the anisotropic direct shear apparatus fixing device of sample and its method |
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| CN108072574A (en) * | 2017-12-11 | 2018-05-25 | 中国科学院地质与地球物理研究所 | It tests rock mass discontinuity and shears anisotropic shear box |
| CN108072574B (en) * | 2017-12-11 | 2024-01-16 | 中国科学院地质与地球物理研究所 | Shear box for testing shear anisotropy of rock mass structural surface |
| CN107976359A (en) * | 2017-12-15 | 2018-05-01 | 浙江科技学院 | Based on the more dimensional structure face shear boxs of standard block limited block assembly type |
| CN107976359B (en) * | 2017-12-15 | 2024-04-12 | 浙江科技学院 | Multi-size structural surface shearing box based on standard unit limiting block assembly |
| CN110487617A (en) * | 2019-09-10 | 2019-11-22 | 中国科学院武汉岩土力学研究所 | The auxiliary fabricated device and its application method of structural fece sample in indoor shearing test |
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Application publication date: 20150218 Assignee: Zhejiang mountain and Sichuan Geological Environment Consulting Co., Ltd. Assignor: Shaoxing University Contract record no.: 2018330000010 Denomination of invention: Supporting device of plane shearing head of rock structural surface direct shear device for circular structural surface samples and direct shear test method Granted publication date: 20160914 License type: Common License Record date: 20180211 Application publication date: 20150218 Assignee: Beijing mining and metallurgy science and Technology Group Co., Ltd. Assignor: Shaoxing University Contract record no.: 2018330000013 Denomination of invention: Supporting device of plane shearing head of rock structural surface direct shear device for circular structural surface samples and direct shear test method Granted publication date: 20160914 License type: Common License Record date: 20180211 Application publication date: 20150218 Assignee: Sinosteel Maanshan Institute of Mining Research Co., Ltd. Assignor: Shaoxing University Contract record no.: 2018330000011 Denomination of invention: Supporting device of plane shearing head of rock structural surface direct shear device for circular structural surface samples and direct shear test method Granted publication date: 20160914 License type: Common License Record date: 20180211 Application publication date: 20150218 Assignee: China Nonferrous Metals Industry Kunming survey design and Research Institute Co Ltd Assignor: Shaoxing University Contract record no.: 2018330000012 Denomination of invention: Supporting device of plane shearing head of rock structural surface direct shear device for circular structural surface samples and direct shear test method Granted publication date: 20160914 License type: Common License Record date: 20180211 |