CN104101546A - Testing table used for testing anchor rod bending load and testing method thereof - Google Patents
Testing table used for testing anchor rod bending load and testing method thereof Download PDFInfo
- Publication number
- CN104101546A CN104101546A CN201410305995.2A CN201410305995A CN104101546A CN 104101546 A CN104101546 A CN 104101546A CN 201410305995 A CN201410305995 A CN 201410305995A CN 104101546 A CN104101546 A CN 104101546A
- Authority
- CN
- China
- Prior art keywords
- testing
- anchor pole
- model
- boring
- anchor rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to the technical field of mine supporting, in particular to a testing table used for testing anchor rod bending load and a testing method thereof. The testing table adopts the structure that a drilling hole model is formed in an operation testing table; one end of an anchor rod is inserted into the drilling hole model to form an anchoring section and a free section; a deflecting device is mounted at the exposed end of the drilling hole model of the anchor rod in a sleeving manner, and is used for enabling the anchor rod to bend and deform; a first bending part of the anchor rod is formed at the hole opening of the drilling hole model, while a second bending part is formed on the interface of the anchoring section and the free section; bending stress gages are mounted at the first bending part and the second bending part respectively for testing the bending stress of the anchor rod. According to the testing table and the testing method provided by the invention, the testing on the bending load born by the anchor rod mounted at different mounting angles is implemented in a laboratory, and references are provided for the anchor rod supporting theory research as well as the anchor rod supporting design under complex stress conditions, and the testing table and the testing method have great importance on deepening the anchor rod supporting mechanism research, improving the anchor rod supporting reliability, as well as guaranteeing the safety of a project.
Description
Technical field
The present invention relates to mine support technical field, relate in particular to a kind of for testing the testing table of anchor pole bending load and applying the method that it tests anchor pole bending load.
Background technology
At present, bolt supporting has become coal mine roadway main support pattern safely and efficiently, in China's coal-mine tunnel, obtains large scale application.Bolt supporting be by anchor rod anchored in coal and rock, tighten bar tail nut, country rock is applied to prestress, the distortion absciss layer of constraint roadway surrounding rock, broken swollen and the slippage changing of the relative positions.
In bolt supporting work progress, rockbolt installation drilling axis and country rock surface form different angles, during tray fastening nut, anchor rod body axis is to the deflection of country rock surface normal direction, at anchoring section and free segment interphase place and drilling orifice place, bend, body of rod Bending load, directly affects the actual comprehensive load capacity of anchor pole.The bending load that research anchor pole bears, to the research of in-depth bolt support mechanism, improves bolt supporting reliability, guarantees that engineering safety is significant.
The method of the mechanical property in the research anchor pole course of work during Bending load mainly contains two large classes: underground trials and laboratory examination.
The axially loaded of the anchor pole that underground trials is mainly tested, can only reflect axial stress or axial load size that anchor pole forms under various stress resultant effects, cannot distinguish real load to the mode of action of anchor pole and amplitude, can not testing bore holes axis and during country rock surface tilt, the bending load that body of rod crooked position bears.Because can not again disclosing the anchor pole in boring, can not test the practical distortion of anchor rod body under bending load effect.In addition, due to the special environment in down-hole, the monitoring method that some are advanced and the application of instrument are also restricted, and the anchor pole limited amount that can monitor, representative not enough.
Laboratory examination is mainly carried out the mini-test of stretching, bending, torsion, shearing and the material impact of anchor rod body material test specimen at present, although the data of test are accurate, can reflect the basic mechanical performance of anchor pole material.But indoor mini-test only reflects the single mechanical index of anchor pole material, cannot simulate the stressing conditions of anchor pole when the variable angle on boring and country rock surface is installed, cannot test out the bending load that anchor pole bears under different setting angles.
Therefore, for above deficiency, need a kind of can be at experiment lab simulation drilling axis during with country rock surface formation different angles, make the testing table that anchor pole bends and apply the method that this testing table tests out the bending load that anchor pole bears accurately and effectively.
Summary of the invention
(1) technical matters that will solve
The technical problem to be solved in the present invention has been to provide a kind of for testing testing table and the method for testing of anchor pole bending load, make it possible to bend under different setting angles at experiment lab simulation anchor pole, can test out accurately and effectively the bending load that anchor pole bears, and can dissect observation to the distortion of anchor pole crooked position.
(2) technical scheme
In order to solve the problems of the technologies described above, the invention provides a kind of for testing the testing table of anchor pole bending load, this testing table comprises the anchor pole for mine support, this testing table also comprises work test board, bending stress meter and inflector assembly, described work test board is provided with boring model, boring model is inserted to form anchoring section and free segment in described anchor pole one end, described inflector assembly is set in the boring model exposed junction of anchor pole, be used for making described anchor pole to occur bending and deformation, described anchor pole forms the first bend at the place, aperture of boring model, interphase place at anchoring section and free segment forms the second bend, described bending stress score is not installed on the first bend and the second bend position, for the bending stress of testing anchor pole.
Wherein, described inflector assembly comprises taper liner plate and pallet, and described pallet fixed cover is located on the anchor pole being positioned at outside boring model, and described taper liner plate is installed on the place, aperture of boring model, for changing the angle between described pallet installed surface and drilling die profile shaft line.
Wherein, described taper liner plate is installed on the place, aperture of boring model, and between taper liner plate and impact beam.
Wherein, described taper liner plate is clinohedral structure.
Wherein, the normal of described taper liner plate and the degree of tilt of drilling axis are 0 °-75 °.
Wherein, boring model is inserted in described anchor pole one end, and section forms anchoring section by Anchor Agent and its hole wall bonding at the bottom of the hole of boring model, is not forming free segment with the aperture section of its hole wall bonding.
Wherein, in the coal and rock physical model boring in described anchoring section, Anchor Agent is housed, described anchor pole is bonded together by Anchor Agent and coal and rock physical model.
It is a kind of for testing the method for testing of the testing table of anchor pole bending load that the present invention also provides, and comprises the steps:
S1, by be measured anchor rod anchored in the boring model of work test board, in the aperture section of boring model, form free segment, at the bottom of the hole of boring model, section forms anchoring section;
S2, by inflector assembly, anchor pole is applied to bending load, make anchor pole form the first bend at the place, aperture of boring model and between free segment and anchoring section interphase place form the second bend;
S3, by bending stress, score and do not test the bending stress of the first bend and the second bend.
Wherein, passing through to change the angle of inclination of taper liner plate described in step S2, to change the angle of drilling die profile shaft line and pallet mounting surface, make anchor pole be subject to different bending loads.
Wherein, in the total length of the boring model described in step S1, be coal and rock physical model, anchoring section length can arbitrarily be adjusted with the in-built number change that enters Anchor Agent of boring model, until the model full length fastening of holing.
(3) beneficial effect
Technique scheme of the present invention has following beneficial effect: the present invention realizes the flexural loading situation when boring is installed with coal and rock surface variable angle at experiment lab simulation anchor pole for testing the testing table of anchor pole bending load; Realization is the test to anchor pole bending load in laboratory, and can dissect observation to the distortion of anchor pole crooked position, for the Design of bolt support under anchor rod supporting theory research and complex stress condition provides foundation, to the research of in-depth bolt support mechanism, improve bolt supporting reliability, guarantee that engineering safety is significant.
Accompanying drawing explanation
Fig. 1 is that the embodiment of the present invention is for testing the cut-open view of the testing table of anchor pole bending load.
Wherein, 2: work test board; 4: inflector assembly; 5: anchor pole; 21: free segment; 22: anchoring section; 41: taper liner plate; 42: pallet; 62: impact beam; 93: coal and rock physical model; 104: bending stress meter.
Embodiment
Below in conjunction with drawings and Examples, embodiments of the present invention are described in further detail.Following examples are used for illustrating the present invention, but can not be used for limiting the scope of the invention.
In description of the invention, except as otherwise noted, the implication of " a plurality of " is two or more; Except as otherwise noted, the implication of " nick shaped " is the shape except cross section is concordant.Term " on ", orientation or the position relationship of the indication such as D score, " left side ", " right side ", " interior ", " outward ", " front end ", " rear end ", " head ", " afterbody " be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than indicate or imply that the device of indication or element must have specific orientation, with specific orientation, construct and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " etc. are only for describing object, and can not be interpreted as indication or hint relative importance.
In description of the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be to be also electrically connected to; Can be to be directly connected, also can indirectly be connected by intermediary.For the ordinary skill in the art, can concrete condition understand above-mentioned term concrete meaning in the present invention.
As shown in Figure 1, described in the present embodiment, for testing the testing table of anchor pole bending load, comprise the anchor pole 5 for mine support, this testing table also comprises work test board 2, bending stress meter 104 and inflector assembly 4, work test board 2 is provided with boring model, and boring model is inserted to form free segment 21 and anchoring section 22 in anchor pole 5 one end; Inflector assembly 4 is set in outside anchor pole 5, inflector assembly 4 is positioned at the place, aperture of work test board 2 boring models, be used for making anchor pole 5 to occur bending and deformation, anchor pole 5 forms the first bend at the place, aperture of boring model, at anchoring section 22, form the second bend with the interphase place of free segment 21, bending stress meter 104 is installed on respectively the first bend and the second bend place, for testing the bending stress of anchor pole 5.This testing table is realized the flexural loading situation when boring is installed with coal and rock surface variable angle at experiment lab simulation anchor pole.
Boring model is not divided anchoring section and free segment in advance.Anchoring section and freedom length are to be determined by the Anchor Agent quantity of using.When Anchor Agent increases, anchoring section scope extends naturally, and when Anchor Agent consumption is enough, the anchor pole in boring can all bond with hole wall, carries out full length fastening.
And, inflector assembly 4 comprises taper liner plate 41 and pallet 42, pallet 42 fixed covers are located at outside anchor pole 5, pallet 42 is positioned at the place, aperture of the boring model of work test board 2, taper liner plate 41 is between pallet 42 and work test board 2, the dip plane of taper liner plate 41 becomes the installed surface of anchor pole 5 pallets 42, uses the taper liner plate 41 of different degree of tilt can make the installed surface generation different angles of pallet 42 tilt, thereby changes the angle between pallet 42 installed surfaces and drilling die profile shaft line; 41 pairs of pallets 42 of taper liner plate have the effect of power, and when anchor pole 5 is installed pretension, pallet 42 drives free segment 21 axis of anchor pole 5 to the deflection of taper liner plate normal direction; Anchor pole 5 place, aperture at boring model under the drive of pallet 42 forms the first bend, and forms the second bend at anchoring section 22 with the interphase place of free segment 21.
Preferably, in order to realize whole integrated setting, taper liner plate 41 is arranged between pallet 42 and impact beam 62; Impact beam 62 is fixedly connected with anchor pole 5.Taper liner plate 41 is preferably clinohedral structure, and the normal of taper liner plate 41 and drilling axis degree of tilt can arbitrarily change, and is preferably 0 °-75 °; Wherein can be preferably angle of inclination be the clinohedral structure of 5 ° to taper liner plate 41; It is the clinohedral structure of 10 ° that taper liner plate 41 can be preferably angle of inclination; It is the clinohedral structure of 15 ° that taper liner plate 41 can be preferably angle of inclination; It is the clinohedral structure of 20 ° that taper liner plate 41 can be preferably angle of inclination; It is the clinohedral structure of 25 ° that taper liner plate 41 can be preferably angle of inclination; It is the clinohedral structure of 30 ° that taper liner plate 41 can be preferably angle of inclination; Thereby know the relation of boring model angle and body of rod bending load.
Preferably, boring model is inserted in anchor pole 5 one end, and section forms anchoring section 22 by Anchor Agent and its hole wall bonding at the bottom of the hole of boring model, is not forming free segment 21 with the aperture section of its hole wall bonding.
And, anchor pole 5 in anchoring section is by Anchor Agent and the fixing bonding of coal and rock physical model 93, further, coal and rock physical model 93 is preferably real coal or rock, and coal and rock physical model 93 also can be the boring model that the Other Engineering material similar to coal petrography stone made.Anchor Agent is by unsaturated polyester resin, hardening agent, promoter and other auxiliary material, formulated thick anchoring adhesives by a certain percentage, by mylar, cut apart packing and be cylindric powder stick, after having stirring, normal temperature cure is fast, bonding strength is high, and the reliable and endurance of anchor force the premium properties such as well.Effectively simulate the truth of anchor pole when supporting, guaranteed the accuracy of test data.
Be worth proposing, change the charge weight of Anchor Agent in boring model, can change anchoring section and freedom length, thereby change anchoring section and free segment interface location, until anchor pole full length fastening in boring model, eliminate bending point in hole, make anchor pole change aperture one place's flexural loading into by the bending of two places.
By this for testing the testing table of anchor pole bending load, can realize the test to anchor pole bending load in laboratory, for the Design of bolt support under anchor rod supporting theory research and complex stress condition provides foundation, to the research of in-depth bolt support mechanism, improve bolt supporting reliability, guarantee that engineering safety is significant.
The present invention also provide described in a kind of basis for testing the method for testing of the testing table of anchor pole bending load, comprise the steps:
S1, by be measured anchor rod anchored in the boring model of work test board, in the aperture section of boring model, form free segment, at the bottom of the hole of boring model, section forms anchoring section;
Wherein, boring model is inserted in anchor pole one end, and section forms anchoring section by Anchor Agent and its hole wall bonding at the bottom of the hole of boring model, is not forming free segment with the aperture section of its hole wall bonding;
Further, the total length of boring model is coal and rock physical model, and anchoring section length can arbitrarily be adjusted with the in-built number change that enters Anchor Agent of boring model, until the model full length fastening of holing.Anchor pole is stirred and is anchored in coal and rock physical model by Anchor Agent, and coal and rock physical model passes through floating drum, anchoring penstock installation in the boring model of work test board.Coal and rock physical model is preferably real coal or rock, and coal and rock physical model also can be the boring model that the Other Engineering material similar to coal, rock made.Anchor Agent is by unsaturated polyester resin, hardening agent, promoter and other auxiliary material, formulated thick anchoring adhesives, cuts apart packing by mylar and is cylindric powder stick by a certain percentage, has normal temperature cure fast, bonding strength is high, and the reliable and endurance of anchor force the premium properties such as well.
S2, by inflector assembly, anchor pole is applied to bending load, make anchor pole form the first bend at the place, aperture of boring model and between free segment and anchoring section interphase place form the second bend;
Taper liner plate has the effect of power to pallet; Use the taper liner plate of different degree of tilt to make the installed surface run-off the straight of pallet, thereby change the angle between pallet installed surface and drilling die profile shaft line, anchor pole place, aperture at boring model under the drive of pallet forms the first bend, and forms the second bend at the interphase place of anchoring section and free segment.
Be specially: using respectively angle of inclination is the installed surface of the taper liner plate change pallet of 5 °; Using angle of inclination is the installed surface of the taper liner plate change pallet of 10 °; Using angle of inclination is the installed surface of the taper liner plate change pallet of 15 °; Using angle of inclination is the installed surface of the taper liner plate change pallet of 20 °; Using angle of inclination is the installed surface of the taper liner plate change pallet of 25 °; Using angle of inclination is the installed surface of the taper liner plate change pallet of 30 °.
S3, by bending stress, score and do not test the bending stress of the first bend and the second bend.
While correspondingly, being the taper liner plate of 5 ° at use angle of inclination, test and record the bending stress of bend; When being the taper liner plate of 10 °, use angle of inclination tests and records the bending stress of bend; When being the taper liner plate of 15 °, use angle of inclination tests and records the bending stress of bend; When being the taper liner plate of 20 °, use angle of inclination tests and records the bending stress of bend; When being the taper liner plate of 25 °, use angle of inclination tests and records the bending stress of bend; When being the taper liner plate of 30 °, use angle of inclination tests and records the bending stress of bend.
Embodiments of the invention provide for example with for the purpose of describing, and are not exhaustively or limit the invention to disclosed form.Many modifications and variations are apparent for the ordinary skill in the art.Selecting and describing embodiment is for better explanation principle of the present invention and practical application, thereby and makes those of ordinary skill in the art can understand the various embodiment with various modifications that the present invention's design is suitable for special-purpose.
Claims (10)
1. one kind for testing the testing table of anchor pole bending load, comprise the anchor pole (5) for mine support, it is characterized in that, also comprise work test board (2), bending stress meter (104) and inflector assembly (4), described work test board (2) is provided with boring model, boring model is inserted to form anchoring section (22) and free segment (21) in described anchor pole (5) one end, described inflector assembly (4) is set in the boring model exposed junction of anchor pole (5), be used for making described anchor pole (5) to occur bending and deformation, described anchor pole (5) forms the first bend at the place, aperture of boring model, at anchoring section (22), form the second bend with the interphase place of free segment (21), described bending stress meter (104) is installed on respectively the first bend and the second bend position, be used for testing the bending stress of anchor pole (5).
2. according to claim 1 for testing the testing table of anchor pole bending load, it is characterized in that, described inflector assembly (4) comprises taper liner plate (41) and pallet (42), described pallet (42) fixed cover is located on the anchor pole (5) being positioned at outside boring model, described taper liner plate (41) is installed on the place, aperture of boring model, for changing the angle between described pallet (42) installed surface and drilling die profile shaft line.
3. according to claim 2ly for testing the testing table of anchor pole bending load, it is characterized in that, described taper liner plate (41) is installed on the place, aperture of boring model, and is positioned between taper liner plate (41) and impact beam (62).
4. according to claim 3ly for testing the testing table of anchor pole bending load, it is characterized in that, described taper liner plate (41) is clinohedral structure.
5. according to claim 4ly for testing the testing table of anchor pole bending load, it is characterized in that 0 °-75 ° of the normal of described taper liner plate (41) and the degree of tilt of drilling axis.
6. according to claim 1 for testing the testing table of anchor pole bending load, it is characterized in that, boring model is inserted in described anchor pole (5) one end, and section forms anchoring section (22) by Anchor Agent and its hole wall bonding at the bottom of the hole of boring model, do not forming free segment (21) with the aperture section of its hole wall bonding.
7. according to claim 6 for testing the testing table of anchor pole bending load, it is characterized in that, in coal and rock physical model (93) boring in described anchoring section (22), Anchor Agent is housed, described anchor pole (5) is bonded together by Anchor Agent and coal and rock physical model (93).
According to described in any one in claim 1-7 for testing a method of testing for the testing table of anchor pole bending load, it is characterized in that, comprise the steps:
S1, by be measured anchor rod anchored in the boring model of work test board, in the aperture section of boring model, form free segment, at the bottom of the hole of boring model, section forms anchoring section;
S2, by inflector assembly, anchor pole is applied to bending load, make anchor pole form the first bend at the place, aperture of boring model and between free segment and anchoring section interphase place form the second bend;
S3, by bending stress, score and do not test the bending stress of the first bend and the second bend.
9. method of testing according to claim 8, is characterized in that, passing through to change the angle of inclination of taper liner plate described in step S2, to change the angle of drilling die profile shaft line and pallet mounting surface, makes anchor pole be subject to different bending loads.
10. method of testing according to claim 9, it is characterized in that, total length at the boring model described in step S1 is coal and rock physical model, and anchoring section length can arbitrarily be adjusted with the in-built number change that enters Anchor Agent of boring model, until the model full length fastening of holing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410305995.2A CN104101546B (en) | 2014-06-30 | 2014-06-30 | A kind of testing stand for testing anchor pole bending load and method of testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410305995.2A CN104101546B (en) | 2014-06-30 | 2014-06-30 | A kind of testing stand for testing anchor pole bending load and method of testing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104101546A true CN104101546A (en) | 2014-10-15 |
| CN104101546B CN104101546B (en) | 2016-11-16 |
Family
ID=51669876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410305995.2A Active CN104101546B (en) | 2014-06-30 | 2014-06-30 | A kind of testing stand for testing anchor pole bending load and method of testing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104101546B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713780A (en) * | 2015-03-22 | 2015-06-17 | 张锐 | Improvement device for mechanical test bench of concrete pole |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63311143A (en) * | 1987-06-15 | 1988-12-19 | Matsushita Electric Works Ltd | Bending tester |
| JPH1048112A (en) * | 1996-08-02 | 1998-02-20 | Fujita Corp | Test of pull-out strength of anchor bolt for machinery |
| CN102636397A (en) * | 2012-04-19 | 2012-08-15 | 山西潞安环保能源开发股份有限公司 | Device and method for rapidly testing comprehensive mechanical properties of anchor bolt |
| CN102692351A (en) * | 2012-05-15 | 2012-09-26 | 天地科技股份有限公司 | Test bed and application method thereof to testing mechanical properties of inclined bolt |
| CN204008327U (en) * | 2014-06-30 | 2014-12-10 | 天地科技股份有限公司 | A kind of for testing the testing table of anchor pole bending load |
-
2014
- 2014-06-30 CN CN201410305995.2A patent/CN104101546B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63311143A (en) * | 1987-06-15 | 1988-12-19 | Matsushita Electric Works Ltd | Bending tester |
| JPH1048112A (en) * | 1996-08-02 | 1998-02-20 | Fujita Corp | Test of pull-out strength of anchor bolt for machinery |
| CN102636397A (en) * | 2012-04-19 | 2012-08-15 | 山西潞安环保能源开发股份有限公司 | Device and method for rapidly testing comprehensive mechanical properties of anchor bolt |
| CN102692351A (en) * | 2012-05-15 | 2012-09-26 | 天地科技股份有限公司 | Test bed and application method thereof to testing mechanical properties of inclined bolt |
| CN204008327U (en) * | 2014-06-30 | 2014-12-10 | 天地科技股份有限公司 | A kind of for testing the testing table of anchor pole bending load |
Non-Patent Citations (2)
| Title |
|---|
| 熊智彪: "《建筑基坑支护》", 31 August 2013, 中国建筑工业出版社 * |
| 程蓬 等: ""锚杆尾部螺纹段应力特性模拟分析"", 《煤炭科学技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713780A (en) * | 2015-03-22 | 2015-06-17 | 张锐 | Improvement device for mechanical test bench of concrete pole |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104101546B (en) | 2016-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204008300U (en) | A kind of for testing the testing table of anchor pole comprehensive mechanical property | |
| CN104075943A (en) | Test bed for testing integrated mechanical properties of anchor rod and test method | |
| CN104111201B (en) | A kind of testing stand for testing anchor pole shock loading and method of testing | |
| CN104089819A (en) | Test bed for testing axial load and axial deformation of anchor rod and test method for test bed | |
| CN103471941B (en) | Anchor rod shock resistance simulation test system | |
| CN104075835B (en) | A kind of testing stand for rockbolt installation pretension and method of testing | |
| Li et al. | Experimental study on the shear behavior of fully grouted bolts | |
| CN101957343B (en) | Novel acoustic-emission ground-stress-field measuring technology based on plane stress condition | |
| CN104089831A (en) | Test bed for testing shear load of anchor rod and test method of test bed | |
| CN104165838B (en) | A kind of experimental provision impacting drawing and experimental technique | |
| CN104198306B (en) | A kind of dynamic drawing experimental provision impacted under active confined pressure and experimental technique | |
| CN103499268A (en) | Space relative deformation measuring device for upper disc and lower disc of in-situ rock joint plane | |
| CN204008327U (en) | A kind of for testing the testing table of anchor pole bending load | |
| CN102692351B (en) | Test bed and application method thereof to testing mechanical properties of inclined bolt | |
| Aziz et al. | An experimental study on the shear performance of fully encapsulated cable bolts in single shear test | |
| CN204008301U (en) | A kind of testing table of testing anchor pole axial load and axial deformation | |
| CN104075904B (en) | Test bed for anchoring of anchor rod and detection method | |
| CN204064825U (en) | A kind of testing table for testing anchor pole shock load | |
| CN109470552A (en) | A kind of booster body and its anchor pole comprehensive mechanical property test platform | |
| Santus et al. | Fatigue resonant tests on S140 and S150 grade corroded drill pipe connections and pipe bodies | |
| Plouffe et al. | Rock bolts testing under dynamic conditions at CANMET-MMSL | |
| CN104101546A (en) | Testing table used for testing anchor rod bending load and testing method thereof | |
| CN204007972U (en) | A kind of testing table for rockbolt installation pretension | |
| CN108593236A (en) | A kind of load experiment separation method of blasting impact and transient unloading | |
| CN110307924B (en) | Device and method for measuring main stress of surrounding rock stress field |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |