CN102706492A - Anchor rod dynamometer and dynamometry method for underground engineering model experiment - Google Patents
Anchor rod dynamometer and dynamometry method for underground engineering model experiment Download PDFInfo
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- CN102706492A CN102706492A CN2012102210700A CN201210221070A CN102706492A CN 102706492 A CN102706492 A CN 102706492A CN 2012102210700 A CN2012102210700 A CN 2012102210700A CN 201210221070 A CN201210221070 A CN 201210221070A CN 102706492 A CN102706492 A CN 102706492A
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- anchor pole
- model test
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- anchor rod
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Abstract
The invention discloses an anchor rod dynamometer and a dynamometry method for an underground engineering model experiment, wherein a main body of the anchor rod dynamometer is an alloy round tube; the alloy round tube is provided with two anchor rod holes symmetrical relative to a circle center; a resistor strain sensor is fixed on the round tube between the two anchor rod holes; and a lead on the resistor strain sensor is connected with the resistor strain sensor. According to the invention, the issue of anchor rod stress monitoring in the model experiment is solved, and the anchor rod dynamometer has the advantages of simple manufacturing process, low cost and convenience in using, and the anchor rod dynamometer and the dynamometry method can be widely applied to geodynamics model experiment research of the underground engineering fields of water conservation, transportation, mines and the like.
Description
Technical field
The present invention relates to a kind of model test technology, relate in particular to a kind of underground project model test and take into account force measuring method with anchor rod force-measuring.
Background technology
Geomechanical model test is to convert actual engineering into the indoor model simulation that makes an experiment according to similarity theory; It helps outstanding principal contradiction in the process of the test of complicacy; Be convenient to hold, find the inner link of phenomenon; Wherein, underground project model test is that underground workss such as tunnel, coal road are carried out analogue simulation, instructs a kind of effective ways and the means of underground works design and construction.In underground project model test; Behind the cavern excavation; The supporting that needs the simulation cavern is like the simulation bolt supporting, and at present, the analogue technique of anchor pole is tending towards ripe gradually in the model test; But the stressed monitoring for anchor pole lacks effective means, is difficult to the supporting situation of bolt supporting member in the model test construction simulation process is carried out deep analysis.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned prior art, provide a kind of underground project model test simple in structure, easy to use to use anchor ergometer, to solve the stressed monitoring problem of anchor pole in the model test.
For realizing above-mentioned purpose, the present invention adopts following technical proposals:
A kind of underground project model test is used anchor ergometer; Its main body is the alloy pipe; The alloy pipe is provided with the bolthole of two relative center of circle symmetries, on the pipe between two boltholes, is fixed with resistance strain sensor, on resistance strain sensor, has lead to be connected with it.Said alloy pipe outer tube wall is smooth.
Than selection material, the distortion of alloy pipe did not exceed elastic stage when the selected metal material of said alloy pipe can guarantee that dynamometer uses according to the stressed size of anchor pole in the model test.
A kind of underground project model test is used the anchor rod force-measuring method, comprises the steps:
(1) installs; When underground project model test uses with anchor ergometer, it is enclosed within on the anchor pole, and is clipped between two pallets on the anchor pole;
(2) demarcate; Before being applied to model test, carry out; Dynamometer is fixed on the steel platform of a band circular hole; Anchor pole passes circular hole, and resistance strain sensor is received on the electric wire strain gauge through lead, makes anchor pole pass circular hole one end then and receives a certain size pulling force and progressively increase; Measure the corresponding strain value of resistance strain sensor through electric wire strain gauge simultaneously, finally obtain anchor pole stressed-relation curve of dynamometer strain;
(3) model test is used; The anchor pole that assembles dynamometer is squeezed in the model; One of them pallet contacts with model surface; The dynamometer generation strain that is squeezed measures its strain value through electric wire strain gauge during supporting, thus again contrast demarcate the anchor pole that obtains stressed-that the dynamometer strain curve obtains anchor pole is stressed.
In the said step (2), the suffered pulling force of anchor pole is controlled within the specific limits, and this scope should guarantee that the distortion of dynamometer alloy pipe does not exceed elastic stage.
The invention solves the stressed problems of monitoring of anchor pole in the model test, its beneficial effect is:
(1) make simply, cost is low, can satisfy model test and produce the requirement of using in batches;
(2) easy to use, can survey test to the stressed variation of anchor pole in the model test process comparatively exactly;
(3) this invention can be widely used in the geomechanical model test research of underground engineering field such as water conservancy, traffic, mine.
Description of drawings
Fig. 1 is a front elevation of the present invention.
Fig. 2 is a side view of the present invention.
Fig. 3 is a demarcation test synoptic diagram of the present invention.
Fig. 4 is a use synoptic diagram of the present invention.
Marginal data: 1-alloy pipe; 2-resistance strain sensor; 3-lead; 4-bolthole; 5-anchor pole; 6-pallet; 7-nut; 8-electric wire strain gauge; 9-steel platform; 10-circular hole; 11-model body.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is explained further details.
Among Fig. 1-Fig. 2; The underground project model test of present embodiment is used anchor ergometer; Its main body is an alloy pipe 1, and alloy pipe 1 is provided with the bolthole 4 of two relative center of circle symmetries, on the pipe between two boltholes 4, is fixed with resistance strain sensor 2; On resistance strain sensor 2, have lead 3 to be connected with it, the outer tube wall of said alloy pipe 1 is smooth.
Than selection material, 1 distortion of alloy pipe did not exceed elastic stage when said alloy pipe 1 selected metal material can guarantee that dynamometer uses according to the stressed size of anchor pole in the model test.
Among Fig. 3-Fig. 4, underground project model test is following with the anchor ergometer job step:
(1) installs; When underground project model test uses with anchor ergometer, it is enclosed within on the anchor pole 5, and is clipped between two pallets 6 on the anchor pole 5, fastening with nut 7;
(2) demarcate; Before being applied to model test, carry out; Dynamometer is fixed on the steel platform 9 of a band circular hole, anchor pole 5 passes circular hole 10, and resistance strain sensor 2 is received on the electric wire strain gauge 8 through lead 3; Make anchor pole 5 pass circular hole 10 1 ends then and receive a certain size pulling force and progressively increase; Measure resistance strain sensor 2 corresponding strain values through electric wire strain gauge 8 simultaneously, finally obtain anchor pole stressed-relation curve of dynamometer strain, wherein; Anchor pole 5 suffered pulling force controls guarantee that 1 distortion of dynamometer alloy pipe does not exceed elastic stage within the specific limits;
(3) model test is used; The anchor pole that assembles dynamometer 5 is squeezed in the model body 11; One of them pallet 6 contacts with model body 11 surfaces; The dynamometer generation strain that is squeezed during supporting; Measure its strain value through electric wire strain gauge 8, thus again contrast demarcate the anchor pole obtain stressed-that the dynamometer strain curve obtains anchor pole is stressed.
Can know that by technological general knowledge the present invention can realize through other the embodiment that does not break away from its spirit or essential feature.Therefore, with regard to each side, all just illustrating, is not only.All within the scope of the present invention or the change in being equal to scope of the present invention all comprised by the present invention.
Claims (5)
1. a underground project model test is used anchor ergometer; Its main body is the alloy pipe, it is characterized in that, the alloy pipe is provided with the bolthole of two relative center of circle symmetries; On the pipe between two boltholes, be fixed with resistance strain sensor, on resistance strain sensor, have lead to be connected with it.
2. underground project model test as claimed in claim 1 is used anchor ergometer, it is characterized in that, said alloy pipe outer tube wall is smooth.
3. underground project model test as claimed in claim 1 is used anchor ergometer; It is characterized in that; Than selection material, the distortion of alloy pipe did not exceed elastic stage when the selected metal material of said alloy pipe can guarantee that dynamometer uses according to the stressed size of anchor pole in the model test.
4. underground project model test as claimed in claim 1 is used the anchor rod force-measuring method, comprises the steps:
(1) installs; When dynamometer uses, it is enclosed within on the anchor pole, and is clipped between two pallets on the anchor pole;
(2) demarcate; Before being applied to model test, carry out; Dynamometer is fixed on the steel platform of a band circular hole; Anchor pole passes circular hole, and resistance strain sensor is received on the electric wire strain gauge through lead, makes anchor pole pass circular hole one end then and receives a certain size pulling force and progressively increase; Measure the corresponding strain value of resistance strain sensor through electric wire strain gauge simultaneously, finally obtain anchor pole stressed-relation curve of dynamometer strain;
(3) model test is used; The anchor pole that assembles dynamometer is squeezed in the model; One of them pallet contacts with model surface; The dynamometer generation strain that is squeezed measures its strain value through electric wire strain gauge during supporting, thus again contrast demarcate the anchor pole that obtains stressed-that the dynamometer strain curve obtains anchor pole is stressed.
5. underground project model test as claimed in claim 4 is used the anchor rod force-measuring method, it is characterized in that, and in the said step (2),, the suffered pulling force of anchor pole is controlled within the specific limits, and this scope should guarantee that the distortion of dynamometer alloy pipe does not exceed elastic stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102210700A CN102706492A (en) | 2012-06-29 | 2012-06-29 | Anchor rod dynamometer and dynamometry method for underground engineering model experiment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102210700A CN102706492A (en) | 2012-06-29 | 2012-06-29 | Anchor rod dynamometer and dynamometry method for underground engineering model experiment |
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| CN102706492A true CN102706492A (en) | 2012-10-03 |
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| CN2012102210700A Pending CN102706492A (en) | 2012-06-29 | 2012-06-29 | Anchor rod dynamometer and dynamometry method for underground engineering model experiment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776569A (en) * | 2014-01-20 | 2014-05-07 | 南通东南公路工程有限公司 | Road pressure sensing mechanism |
| CN104697674A (en) * | 2015-02-01 | 2015-06-10 | 山东科技大学 | Anchor rod stress testing device and application method thereof |
| CN108955965A (en) * | 2018-07-27 | 2018-12-07 | 西南交通大学 | It is a kind of for detecting the detection device and method of suspension roof support stress spread range |
| CN110631744A (en) * | 2019-11-04 | 2019-12-31 | 中交一公局土木工程建筑研究院有限公司 | Anchor rod dynamometer for monitoring axial force of anchor rod |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2533794B2 (en) * | 1988-08-04 | 1996-09-11 | 前田建設工業株式会社 | How to install strain gauges in underground structures |
| JP3643097B2 (en) * | 2002-08-21 | 2005-04-27 | エヌ・ティ・ティ・アドバンステクノロジ株式会社 | Axial force meter |
| CN201635754U (en) * | 2010-01-29 | 2010-11-17 | 西安科技大学 | Force measurement anchor device for analog simulation experiment |
| CN202693167U (en) * | 2012-06-29 | 2013-01-23 | 山东大学 | Rock bolt extensometer for underground engineering model test |
-
2012
- 2012-06-29 CN CN2012102210700A patent/CN102706492A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2533794B2 (en) * | 1988-08-04 | 1996-09-11 | 前田建設工業株式会社 | How to install strain gauges in underground structures |
| JP3643097B2 (en) * | 2002-08-21 | 2005-04-27 | エヌ・ティ・ティ・アドバンステクノロジ株式会社 | Axial force meter |
| CN201635754U (en) * | 2010-01-29 | 2010-11-17 | 西安科技大学 | Force measurement anchor device for analog simulation experiment |
| CN202693167U (en) * | 2012-06-29 | 2013-01-23 | 山东大学 | Rock bolt extensometer for underground engineering model test |
Non-Patent Citations (1)
| Title |
|---|
| 伍永平，等: "相似模拟实验中锚杆测力计的研制与应用", 《采矿与安全工程学报》, vol. 29, no. 3, 31 May 2012 (2012-05-31), pages 371 - 375 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776569A (en) * | 2014-01-20 | 2014-05-07 | 南通东南公路工程有限公司 | Road pressure sensing mechanism |
| CN104697674A (en) * | 2015-02-01 | 2015-06-10 | 山东科技大学 | Anchor rod stress testing device and application method thereof |
| CN108955965A (en) * | 2018-07-27 | 2018-12-07 | 西南交通大学 | It is a kind of for detecting the detection device and method of suspension roof support stress spread range |
| CN110631744A (en) * | 2019-11-04 | 2019-12-31 | 中交一公局土木工程建筑研究院有限公司 | Anchor rod dynamometer for monitoring axial force of anchor rod |
| CN110631744B (en) * | 2019-11-04 | 2021-03-12 | 中交一公局土木工程建筑研究院有限公司 | Anchor rod dynamometer for monitoring axial force of anchor rod |
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Application publication date: 20121003 |