CN203310698U - Coal mine tunnel coal-rock mass anchoring performance testing device - Google Patents
Coal mine tunnel coal-rock mass anchoring performance testing device Download PDFInfo
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- CN203310698U CN203310698U CN2013202511182U CN201320251118U CN203310698U CN 203310698 U CN203310698 U CN 203310698U CN 2013202511182 U CN2013202511182 U CN 2013202511182U CN 201320251118 U CN201320251118 U CN 201320251118U CN 203310698 U CN203310698 U CN 203310698U
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Abstract
The utility model relates to the technical field of coal mining, and especially relates to a coal mine tunnel coal-rock mass anchoring performance testing device. The testing device comprises a force-applying device, a dynamometer, a first displacement sensor, a first anchor rod and a second anchor rod, wherein the first anchor rod and the second anchor rod are anchored on a coal mine tunnel coal-rock mass; the force-applying device and the dynamometer are arranged on the first anchor rod, the force-applying device is used for applying drawing force on the first anchor rod, and the dynamometer is used for detecting the magnitude of the drawing force applied on the first anchor rod; one end of the first displacement sensor is fixed on the first anchor rod, the other end of the first displacement sensor is fixed on the second anchor rod, and the first displacement sensor is used for detecting the displacement of the first anchor rod with respect to the second anchor under the effect of the drawing force applied by the force-applying device. The testing device provided by the utility model has the beneficial effect that a standard point with a stable position is obtained in a coal mine tunnel to measure a plurality of groups of drawing force and anchor rod displacement values in reference to the standard point so as to obtain the relation curve of the drawing force and the anchor rod displacement values, and the testing device lays a foundation for further understanding the coal-rock mass anchoring performance and performing anchor rod support designing.
Description
Technical field
The utility model relates to a kind of Coal Mining Technology field, particularly relates to a kind of coal mine roadway coal and rock anchoring performance testing device.
Background technology
Updating and improving along with the prestressed anchor support technology, the development of anchoring theory and perfect, and exploitation and the development of novel high-strength, superhigh intensity anchor pole material, prestressed anchor has been widely used among the underground works in a plurality of fields such as water conservancy, mine, traffic, building.
Before the coal mine roadway Design of bolt support, should carry out evaluation of geological mechanic, the content of coal roadway rock evaluation of geological mechanic comprises that on-the-spot geologic condition and working condition investigation, coal roadway rock physico-mechanical properties are measured, surrounding rock structure is observed, terrestrial stress is tested and the test of anchor rod drawing power.The purpose of anchor rod drawing test is to judge the anchor of roadway surrounding rock, estimates anchor pole, resin, the performance of country rock anchor system and the anchor force of anchor pole.The anchor test of country rock is the element task that Design of bolt support is carried out in tunnel, is also the foundation whether the high gas layer tunnel that judges soft-rock tunnel or carry out gas pumping can adopt bolt supporting.Particularly for high pre-stress power bolting supporting system, the anchor of country rock is to be related to whether successful key of bolt supporting.So, before Design of bolt support, must carry out the test of coal and rock anchor.
BOLTING TECHNOLOGY TO COAL ROADWAY regulation and stipulation, pull-out test mainly, by till anchor pole evenly being loaded into step by step to anchor pole slip or body of rod destruction, are loaded by a people, and a people has recorded.Can only measure that anchor pole slides or the pulling capacity while destroying, can not obtain pallet etc. and protect the table member at the amount of being pressed into of rib and pulling capacity and the anchor pole displacement curve of each mechanics stage, when carrying out Design of bolt support, lack reliable basic data.
In order to overcome the above problems, the utility model has been done useful improvement.
The utility model content
The technical matters that (one) will solve
The technical problems to be solved in the utility model be to provide a kind of can the continuous coverage pulling capacity and the coal mine roadway coal and rock anchoring performance testing device of anchor pole displacement relation.
(2) technical scheme
The utility model is achieved through the following technical solutions:
A kind of coal mine roadway coal and rock anchoring performance testing device, comprise force application apparatus, dynamometer, the first displacement transducer, the first anchor pole and the second anchor pole, and described the first anchor pole and described the second anchor pole all are anchored on the coal mine roadway coal and rock;
Described force application apparatus and described dynamometer all are located on described the first anchor pole; Described force application apparatus is for applying pulling capacity to described the first anchor pole; The size of the pulling capacity that described dynamometer applies described the first anchor pole for detection of described force application apparatus;
One end of described the first displacement transducer is fixed on described the first anchor pole, and the other end is fixed on described the second anchor pole, for detection of the displacement with respect to described the second anchor pole generation under the pulling capacity effect that described force application apparatus applies of described the first anchor pole.
Further, described the first anchor pole and described the second anchor pole all are anchored on the coal and rock of coal mine roadway homonymy.
Further, described force application apparatus and described dynamometer all are located at the end outside coal and rock that is exposed to of described the first anchor pole.
Further, the point of fixity between an end of described the first displacement transducer and described the first anchor pole is positioned at the end outside coal and rock that is exposed to of described the first anchor pole; The other end of described the first displacement transducer and point of fixity between described the second anchor pole are positioned on the expansion link that is exposed to that the outer end of coal and rock is fixedly connected with and extends to described the first anchor pole direction with described the second anchor pole.
Further, the outer end of coal and rock that is exposed to of described the first anchor pole is fixedly connected with the first extension rod, and an end of described the first displacement transducer is positioned on the contact plate be fixedly connected with described the first extension rod with the point of fixity between described the first anchor pole; The outer end of coal and rock that is exposed to of described the second anchor pole is fixedly connected with the second extension rod, on described the second extension rod, be connected with a swivel adapter head, the other end of described the first displacement transducer and point of fixity between described the second anchor pole are positioned on the expansion link that is fixedly connected with described swivel adapter head and extends to described the first anchor pole direction.
Further, also comprise be used to measuring the second displacement sensor of the coal and rock surface amount of being pressed into, one end of described second displacement sensor is fixed on the supporting plate that the coal and rock surface is installed with, and the other end of described second displacement sensor is fixed on the cross bar be connected with described the second anchor pole.
Further, also comprise be used to measuring the second displacement sensor of the coal and rock surface amount of being pressed into, one end of described second displacement sensor is fixed on the supporting plate that the coal and rock surface is installed with, and described dynamometry is counted lifting jack, and the other end of described second displacement sensor is fixed on the shell of described lifting jack.
(3) beneficial effect
With prior art, compare with product, the utility model has the following advantages:
1, because the first anchor pole produces under pulling capacity displacement is very little, so proving installation is higher to the stability requirement of reference point, the utility model is fixed on displacement transducer on the second anchor pole, and the second anchor pole is anchored on coal and rock, therefore we just can first obtain the reference point of a position stability in coal mine roadway, we just can continuous coverage organize the numerical value of pulling capacity and anchor pole displacement more with reference to this reference point, thereby the curve of the pulling capacity of obtaining and anchor pole displacement, improved the understanding of people to the coal and rock anchoring property, people also can calculate to obtain anchor-holding force of anchor bolt according to this curve, anchor pole displacement and pallet are in the amount of being pressed into of rib, further improve coal and rock anchoring property testing level under coal mine, simultaneously, can also be when Design of bolt support, according to this curve, design bolt pretension and protect the selection of showing member such as pallet or steel band reference is provided, to the scientific rationality of further raising Design of bolt support and provide the data basis for improving anchor rod supporting theory.
2, further, the first anchor pole and the second anchor pole be fixed on the coal and rock of coal mine roadway homonymy or appoint any two adjacent anchor poles of getting on homonymy coal and rock sidewall to test, can save measurement space, namely coal and rock one side only surveyed in coal mine roadway of measuring process is carried out, and during measurement, does not affect normal pedestrian and driving in tunnel.
3, can also further measure and protect the curve of table member in the amount of being pressed into Yu the pulling capacity on rib surface.
4, the utility model is simple in structure, is easy to realize, cost is low.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In accompanying drawing, the list of parts of each label representative is as follows:
1, force application apparatus, 2, dynamometer, the 3, first displacement transducer, the 4, first anchor pole, the 5, second anchor pole, 6, swivel adapter head, 7, expansion link, 8, contact plate, 9, supporting plate, 10, second displacement sensor, the 11, first extension rod, the 12, second extension rod, 13, cross bar.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is made a detailed explanation.
As shown in Figure 1, the utility model comprises force application apparatus 1, dynamometer 2, the first displacement transducer 3, the first anchor pole 4 and the second anchor pole 5, the first anchor pole 4 and the second anchor pole 5 all are anchored on the coal mine roadway coal and rock, the outer end of coal and rock that is exposed to of the first anchor pole 4 is connected with on the first extension rod 11, the first extension rods 11 and is connected with force application apparatus 1 and dynamometer 2; The purpose that the first extension rod 11 is set here is: it is too short that the anchor pole had is exposed at the outer part of coal and rock, so be convenient to arrange sensor and draw-off gear in the above after setting up extension rod again.Force application apparatus 1 is for applying pulling capacity to the first anchor pole 4; Dynamometer 2 applies the size of pulling capacity for detection of 1 pair of the first anchor pole 4 of force application apparatus.Wherein, force application apparatus 1 can adopt manual pump, and dynamometer 2 can adopt common pressure transducer or hydraulic jack; Aspect equipment connection, can be both that force application apparatus 1 is connected on the first anchor pole 4 by dynamometer 2, for easy to connect, yes preferably be connected to the first anchor pole 4 be exposed to the outer end of coal and rock, can also be that force application apparatus 1 directly is connected with the first anchor pole 4, then dynamometer 2 is set separately on force application apparatus 1.
The outer end of coal and rock that is exposed to of the first anchor pole 4 is fixedly connected with an end that also is connected with contact plate 8, the first displacement transducers 3 on the first extension rod 11, the first extension rods 11 and is fixed on contact plate 8; The outer end of coal and rock that is exposed to of the second anchor pole 5 is fixedly connected with the second extension rod 12, on the second extension rod 12, be connected with a swivel adapter head 6, swivel adapter head 6 is connected with the other end to expansion link 7, the first displacement transducers 3 of the first anchor pole 4 directions extensions and is fixed on expansion link 7; Here the connection of said the first displacement transducer 3, in fact refer to the connection of the location sensitive sheet on first sensor, for example, one end of the first displacement transducer 3 is fixing at one end to be fixed on expansion link 7, the location sensitive sheet of the first displacement transducer 3 the insides withstands contact plate 8, the displacement that the first displacement transducer 3 produces with respect to the second anchor pole 5 under the pulling capacity effect that force application apparatus 1 applies for detection of the first anchor pole 4, what detect in other words is the displacement of the first anchor pole with respect to a fixing reference point.The benefit arranged like this is, during due to each the measurement, the first anchor pole 4 is exposed to the outer length of coal and rock and the second anchor pole 5, and to be exposed to the outer length of coal and rock unavoidable inconsistent or angles two anchor poles are inconsistent, at this moment can adjust by swivel adapter head 6; While also having each the measurement, the distance between the first anchor pole 4 and the second anchor pole 5 is also different unavoidably, at this moment can adjust by expansion link 7.
Now, although the first displacement transducer 3 is fixed between contact plate 8 and expansion link 7, but expansion link 7 is to be fixed on the second anchor pole 5 be anchored in coal and rock by swivel adapter head 6, trigger board 8 is fixedly connected on the first anchor pole 4, so in fact, being equivalent to the first displacement transducer 3 is fixed between the first anchor pole 4 and the second anchor pole 5, because being one, the second anchor pole 5 anchors into the firm of coal and rock, the reference point that can not deform, the other end of the first displacement transducer 3 is the equal of just to be fixed on the reference point of a position stability in coal mine roadway.And the curve of testing pulling capacity and anchor pole displacement in coal mine roadway requires stricter, require measurement mechanism can measure each pulling capacity and change the micro-displacement brought, therefore the requirement stable to reference point locations and that displacement transducer is stable of this device is all higher, and in tunnel, be difficult to find stable position reference point, above-mentioned set-up mode has effectively been avoided can only when action occurs anchor pole, measuring because can not find stable reference point the situation that one point data can't obtain many group continuous coverage data, but also can be further by the adjustment of swivel adapter head 6 and expansion link 7, even the position difference that anchor pole arranges, but still has applicability preferably.We just can accurate, continuous measurement organize the numerical value of pulling capacity and anchor pole displacement more by this benchmark reference point, thus the curve of the pulling capacity of obtaining and anchor pole displacement.
If if anchor pole is exposed to the outer length long enough of coal and rock, certainly can also be without extension rod is set, above-mentioned force application apparatus, dynamometer, the first displacement transducer are set directly at anchor pole and are exposed to the outer end of coal and rock and get final product, for example, the second anchor pole is exposed to the outer end of coal and rock and directly is fixed with an expansion link stretched out to the first anchor pole, on this expansion link, be fixed with the first displacement transducer, the other end of the first displacement transducer directly is fixed on the second anchor pole 5, also is fine.
Further, the first anchor pole 4 and the second anchor pole 5 are two anchor poles that are fixed on the coal and rock of coal mine roadway homonymy, that is to say, both can adopt to be fixed on any two anchor poles that anchor is good of homonymy coal and rock outer wall in tunnel and to test, can be also two anchor poles now to be anchored into to the homonymy in tunnel.In general, the distance between two anchor poles can be between 100mm-2000mm, and its spacing is unsuitable excessive also unsuitable too small, if spacing is excessive, the installation between sensor connects inconveniently, also easily produces measuring error; If spacing is too small, may cause the second anchor pole be subject to the impact that the first anchor pole extracts and produce small change in location, also cause producing measuring error, certainly coal and rock itself is still harder, 100mm neither measure even spacing is less than, and only should slightly reserve certain safe distance; For the ease of fitting operation, scene often two anchor pole spacings remains on 500mm-1200mm and is advisable.With the first anchor pole 4, the second anchor pole 5, on being separately positioned on the coal and rock of coal mine roadway offside, coal mine roadway compares respectively, setting can be saved shared space while carrying out the measurement activity like this, namely whole measuring process only need to be in coal mine roadway the coal and rock of surveying one side carry out, during measurement, can not take whole tunnel, can not have influence on the normal current of people and Che in tunnel.
Finally, the pulling capacity value that the each point recorded is different and corresponding shift value thereof are uploaded to storer or strainmeter, record measurement data.According to the pulling capacity recorded and anchor pole displacement curve, people can better grasp the anchoring property of coal and rock, and improvement designs anchor pole, support system, pretightning force of anchor pole etc. more reasonably is set conversely, improves the Design of bolt support level.
Further, can also measure by second displacement sensor 10 is set the amount of the being pressed into size on rib surface while applying pulling capacity, can realize like this, owing to generally all covering and be pressed with supporting plate 9 in the surface of coal mine roadway coal and rock, one end of second displacement sensor 10 can be connected on supporting plate 9, the other end is fixed on the cross bar 13 that is connected with the second anchor pole 5 and extends to the first anchor pole 4 directions, so just can record the displacement of supporting plate with respect to the second fixing anchor pole 5 by second displacement sensor 10, it is the displacement of the rib surface amount of being pressed into, thereby obtain the curve that the rib surface amount of being pressed into changes with pulling capacity, for understanding more comprehensively and holding anchoring property, provide the data basis.Certainly, also can imitate the connected mode similar with the first displacement transducer here, similar swivel adapter head and expansion link namely are set, adapt to distance between two different anchor poles and the needs of angle.In practice, if dynamometer 2 adopts lifting jack, the other end of second displacement sensor 10 can also be fixed on the shell of lifting jack, because the shell of lifting jack is also fixed with respect to the first anchor pole contacted with the apical axis of lifting jack and supporting plate 9, only its stationarity is good not as the second anchor pole 5, this coupling arrangement also can use in the less demanding occasion of degree of accuracy, can complete surveying work equally.
During use, by the ascending pulling capacity that progressively applies of 1 pair of the first anchor pole 4 of force application apparatus, by dynamometer 2, measure and record the pulling capacity size applied, by the first displacement transducer 3, be recorded under the effect of the pulling capacity increased gradually, the first anchor pole 4 is with respect to the i.e. displacement of the second anchor pole 5 of firm point of fixity; Further, can also be recorded under the effect of the above-mentioned pulling capacity increased gradually by second displacement sensor 10 size of the rib amount of being pressed into.Like this, just can obtain when applying different pulling capacities, the displacement of corresponding the first anchor pole and the displacement of corresponding supporting plate, and then obtain pulling capacity and anchor pole displacement relation curve, pulling capacity and rib are pressed into the magnitude relation curve.In order to make the curve finally obtained more accurate, generally at the coal and rock diverse location, first choose several measurement points, the first anchor pole is anchored into to these measurement points one by one, survey record, obtain multi-group data respectively.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (7)
1. coal mine roadway coal and rock anchoring performance testing device, it is characterized in that: comprise force application apparatus, dynamometer, the first displacement transducer, the first anchor pole and the second anchor pole, described the first anchor pole and described the second anchor pole all are anchored on the coal mine roadway coal and rock;
Described force application apparatus and described dynamometer all are located on described the first anchor pole; Described force application apparatus is for applying pulling capacity to described the first anchor pole; The size of the pulling capacity that described dynamometer applies described the first anchor pole for detection of described force application apparatus;
One end of described the first displacement transducer is fixed on described the first anchor pole, and the other end is fixed on described the second anchor pole, for detection of the displacement with respect to described the second anchor pole generation under the pulling capacity effect that described force application apparatus applies of described the first anchor pole.
2. coal mine roadway coal and rock anchoring performance testing device according to claim 1, it is characterized in that: described the first anchor pole and described the second anchor pole all are anchored on the coal and rock of coal mine roadway homonymy.
3. coal mine roadway coal and rock anchoring performance testing device according to claim 1 is characterized in that: what described force application apparatus and described dynamometer all were located at described the first anchor pole is exposed to the outer end of coal and rock.
4. coal mine roadway coal and rock anchoring performance testing device according to claim 1 is characterized in that: what the point of fixity between an end of described the first displacement transducer and described the first anchor pole was positioned at described the first anchor pole is exposed to the outer end of coal and rock; The other end of described the first displacement transducer and point of fixity between described the second anchor pole are positioned on the expansion link that is exposed to that the outer end of coal and rock is fixedly connected with and extends to described the first anchor pole direction with described the second anchor pole.
5. coal mine roadway coal and rock anchoring performance testing device according to claim 1, it is characterized in that: the outer end of coal and rock that is exposed to of described the first anchor pole is fixedly connected with the first extension rod, and an end of described the first displacement transducer is positioned on the contact plate be fixedly connected with described the first extension rod with the point of fixity between described the first anchor pole; The outer end of coal and rock that is exposed to of described the second anchor pole is fixedly connected with the second extension rod, on described the second extension rod, be connected with a swivel adapter head, the other end of described the first displacement transducer and point of fixity between described the second anchor pole are positioned on the expansion link that is fixedly connected with described swivel adapter head and extends to described the first anchor pole direction.
6. according to the arbitrary described coal mine roadway coal and rock anchoring performance testing device of claim 1 to 5, it is characterized in that: also comprise be used to measuring the second displacement sensor of the coal and rock surface amount of being pressed into, one end of described second displacement sensor is fixed on the supporting plate that the coal and rock surface is installed with, and the other end of described second displacement sensor is fixed on the cross bar be connected with described the second anchor pole.
7. according to the arbitrary described coal mine roadway coal and rock anchoring performance testing device of claim 1 to 5, it is characterized in that: also comprise be used to measuring the second displacement sensor of the coal and rock surface amount of being pressed into, one end of described second displacement sensor is fixed on the supporting plate that the coal and rock surface is installed with, described dynamometry is counted lifting jack, and the other end of described second displacement sensor is fixed on the shell of described lifting jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202511182U CN203310698U (en) | 2013-05-10 | 2013-05-10 | Coal mine tunnel coal-rock mass anchoring performance testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202511182U CN203310698U (en) | 2013-05-10 | 2013-05-10 | Coal mine tunnel coal-rock mass anchoring performance testing device |
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| CN203310698U true CN203310698U (en) | 2013-11-27 |
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| CN2013202511182U Withdrawn - After Issue CN203310698U (en) | 2013-05-10 | 2013-05-10 | Coal mine tunnel coal-rock mass anchoring performance testing device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278384A (en) * | 2013-05-10 | 2013-09-04 | 天地科技股份有限公司 | Testing device and measuring method for anchorage performance of coal and rock mass in coal mine tunnel |
| CN103983521A (en) * | 2014-06-09 | 2014-08-13 | 天地科技股份有限公司 | Anchoring performance testing device |
| CN108386218A (en) * | 2018-03-12 | 2018-08-10 | 中国矿业大学 | A kind of roadway bolt pretightning force is accurately constructed and monitoring allows pressure device and application method |
| CN109973131A (en) * | 2019-02-22 | 2019-07-05 | 山东科技大学 | A kind of prestressed anchor and test method for simulation laboratory test |
| CN110462228A (en) * | 2017-03-27 | 2019-11-15 | 费希尔厂有限责任两合公司 | The arragement construction and fixed system of anchor bolt in anchor hole |
-
2013
- 2013-05-10 CN CN2013202511182U patent/CN203310698U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278384A (en) * | 2013-05-10 | 2013-09-04 | 天地科技股份有限公司 | Testing device and measuring method for anchorage performance of coal and rock mass in coal mine tunnel |
| CN103278384B (en) * | 2013-05-10 | 2015-04-22 | 天地科技股份有限公司 | Testing device and measuring method for anchorage performance of coal and rock mass in coal mine tunnel |
| CN103983521A (en) * | 2014-06-09 | 2014-08-13 | 天地科技股份有限公司 | Anchoring performance testing device |
| CN110462228A (en) * | 2017-03-27 | 2019-11-15 | 费希尔厂有限责任两合公司 | The arragement construction and fixed system of anchor bolt in anchor hole |
| CN110462228B (en) * | 2017-03-27 | 2021-08-31 | 费希尔厂有限责任两合公司 | Arrangement and fastening system for anchor bolts in anchor bores |
| CN108386218A (en) * | 2018-03-12 | 2018-08-10 | 中国矿业大学 | A kind of roadway bolt pretightning force is accurately constructed and monitoring allows pressure device and application method |
| CN109973131A (en) * | 2019-02-22 | 2019-07-05 | 山东科技大学 | A kind of prestressed anchor and test method for simulation laboratory test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131127 Effective date of abandoning: 20150422 |