CN102679840A - External port free type convergence instrument and measurement method thereof - Google Patents
External port free type convergence instrument and measurement method thereof Download PDFInfo
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- CN102679840A CN102679840A CN2012101893137A CN201210189313A CN102679840A CN 102679840 A CN102679840 A CN 102679840A CN 2012101893137 A CN2012101893137 A CN 2012101893137A CN 201210189313 A CN201210189313 A CN 201210189313A CN 102679840 A CN102679840 A CN 102679840A
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Abstract
The invention discloses an external port free type convergence instrument and a measurement method thereof. The external port free type convergence instrument mainly comprises a deep anchoring base rod, multiple sections middle connection rods and an external port free rod, wherein the deep anchoring base rod is in threaded connection with the middle connection rods; the multiple sections of middle connection rods are connected with one another end to end; the number of middle connection rods is determined by the depth of a hole; and the external port free rod is connected to the last middle connection rod at the aperture of the hole. The rod bodies are anchored into a drilled hole after being sequentially connected and fastened; the aperture is wedged by a wedged guide indication disk, and the external port free rod is exposed at a certain length; the reading of a scale on the surface of the external port free rod, which is pointed by the outer edge of the wedged guide indication disk, is read as an initial value and then regularly read; and at the end of observation, the surface convergence amount of an alley during observation is obtained by subtracting the initial reading from the last reading of the scale on the surface of the external free rod. The external port free type convergence instrument has the advantages that structure is simple, use is convenient, accuracy is high, measurement is continuous and can be repeated, the influence on production is little, and the like.
Description
Technical field
The present invention relates to collar extension free style convergence instrument and measuring method thereof, be particularly useful for measuring the inner specific region relative deformation of tunnel surface displacement and country rock, also be applicable to the inner specific region relative deformation situation of country rock of measuring, like the dilatational strain of anchorage zone etc.
Background technology
Coal mine roadway is as down-hole important operation passage and work space, and its stability state directly has influence on the ordinary production of mine and workman's life security.At present, the China's coal-mine development heading is bolt supporting basically, compares with traditional shed ding support; Bolt supporting belongs to disguised engineering, and internal sabotage is difficult for manifesting, and roof fall accident has sudden; So must carry out daily deformation of the surrounding rock in tunnel monitoring; To judge roadway support quality and optimum roadway supporting parameter, guarantee the intact degree of roadway maintenance and the security of work space, better be mine highly effective and safe production service.
Roadway surface displacement is mine roadway deformation monitoring of the core content of the measurement methods generally include "cross" section, "Lv word" section, "Tic Tac Toe" section and other measurement tools are steel tape measure, measuring rod, measuring guns, convergence device, tower foot, laser range finder, etc., but the existing measurement tools and methods are used in roadway operations, working on the roadway to normal traffic and a greater impact; station protection difficulties, low reliability; measuring time-consuming and labor-intensive, larger workload; process influenced by human factors, repeatability is poor, difficult to ensure accuracy; has large equipment areas or difficult to measure the wind speed of the roadway; measurement data obtained for the top floor, two helped relative amount of deformation measuring point can not be measured The absolute amount of deformation; roadway expansion after brushing station is destroyed, can not be achieved before and after expansion brush continuous observation.Therefore, utilize peripheral superficial part country rock fixedly measuring point carry out observation, be not suitable for engineering-environment and conditions such as large deformation, loose and soft surrounding rock and deep tunnel.
A cover is little to construction infection, survey is read conveniently, repeatable surrouding rock deformation observation strong, that precision is high is equipped and method but still lack at present.The problems affect that existing observation procedure is read to exist on the precision in survey the collection of on-the-spot basic data, limited assurance to the surrouding rock deformation rule, hindered further developing of roadway support technology.
Summary of the invention
Technical matters: the objective of the invention is to overcome the deficiency in the prior art, provide a kind of simple in structure, method is easy, construction infection is little, survey read conveniently, repeatable strong, collar extension free style convergence instrument and measuring method thereof that precision is high.
Technical scheme: collar extension free style convergence instrument of the present invention; Comprise the deep anchoring base bar in resin anchoring agent is anchored at boring, the more piece middle part connecting link that links to each other with deep anchoring base bar; Described drilling orifice place is provided with the wedge shape guiding display disc of fixing middle part connecting link, and the exposed junction of middle part connecting link is connected with at least one collar extension free bar; Described deep anchoring base bar, the every joint length of more piece middle part connecting link are 1000mm ~ 3000mm, and the every joint length of collar extension free bar is 100mm; The rear portion of described deep anchoring base bar, more piece middle part connecting link and collar extension free bar is equipped with the continued access threaded hole; The front portion of middle part connecting link, collar extension free bar is equipped with and connects the thread connection head that threaded hole is complementary.
Described collar extension free bar surface indicates scale; Described wedge shape guiding display disc length is 100mm ~ 200mm, and the wedge shape maximum radius of wedge shape guiding display disc is than the big 5 ~ 8mm in aperture of boring, and key groove is 5～10 °.
The measuring method of collar extension free style convergence instrument of the present invention:
A. be not less than the boring of 10m to the middle part that top board and two the is helped degree of depth of respectively constructing respectively waiting to observe in the tunnel perpendicular to the country rock surface; Spy on definite tunnel surrounding rock body cranny development degree of depth and relatively stable regional depth through boring, relatively stable regional depth is 8 ~ 10m;
B. help respectively to construct boring that one or more length are not less than relatively stable regional depth as a survey station immediately following driving face at back and two;
C. the resin anchoring agent that length is not less than 1000mm is put into boring; Then deep anchoring base bar, more piece middle part connecting link is connected successively and send in the boring after fastening; The collar extension free bar is connected the place, aperture; Deep anchoring base bar is connected the length sum than the little 10mm ~ 50mm of drilling depth with more piece middle part connecting link, stirs anchoring after each connecting link connection finishes;
D. the wedge shape display disc that leads is passed the collar extension free bar, in the aperture of wedging boring, be close to scar, the read-record of the indicated collar extension free bar figure of wedge shape guiding display disc outer rim this moment is an initial value;
When roadway surrounding rock is being out of shape in the dilation process; Constantly the wedge shape indicating dial is passed to the end of collar extension free bar; Make the collar extension free bar to the hole intrinsic displacement, based on the reading that needs time recording collar extension free bar figure of observation, the difference of the reading that every record is twice is the deformation velocity of country rock;
When the collar extension free bar when hole intrinsic displacement to revealed section distance is 10 ~ 20mm, next root collar extension free bar of continued access guarantees that the collar extension free bar has the outer outer length of boring that is exposed at always;
When the deformation velocity of e. continuous 3 ~ 5 days roadway surrounding rocks was lower than 1mm/d, observation finished, and the reading of the figure of collar extension free bar is a final reading, and the difference of final reading and initial reading is the amount of convergence on the surface, tunnel between observation;
F. 10m ~ 20m distance at interval, repeating step b ~ e arranges next survey station.According to the measurement needs, arrange a plurality of survey stations, can obtain the surrouding rock deformation characteristic of a plurality of positions.
Beneficial effect: the present invention can effectively solve the survey station of present existence and protect difficulty, is subject to problems such as human factor influences, precision is low, influence production, improves tunnel surface displacement efficiency of measurement and precision.Can solve the difficulty that runs in observation of coal mine roadway country rock surface displacement and the relative deformation measurement of the inner specific region of country rock well.It is simple in structure, method is easy, construction infection is little, survey is read conveniently, repeatability is strong, precision is high.Concrete advantage is following:
1, measurement space is forwarded in the country rock body from the tunnel, only expose a spot of collar extension free bar, do not influence the normal current and work in the tunnel;
2, adopt amount of convergence directly to read from collar extension free bar figure, convenient reading, the simple to operate repetition, degree of accuracy is high;
3, can realize being based on the absolute deformation monitoring of travelling trader working on his own, top board, base plate;
4, through reducing the continuous modification observation that middle part connecting link quantity can realize expansion brush front and back, tunnel.
Description of drawings
Fig. 1 is a collar extension free style convergence instrument structural representation of the present invention;
Fig. 2 is the A district enlarged drawing of Fig. 1;
Fig. 3 is a collar extension free style convergence instrument deep anchoring base bar synoptic diagram of the present invention;
Fig. 4 is a collar extension free style convergence instrument of the present invention middle part connecting link synoptic diagram;
Fig. 5 is a collar extension free style convergence instrument collar extension free bar synoptic diagram of the present invention.
Among the figure: 1-deep anchoring base bar, 2-middle part connecting link, 3-collar extension free bar, 4-resin anchoring agent, 5-boring, 6-wedge shape guiding display disc, 7. scale, 8-. threaded hole, 9.-thread connection head.
Embodiment
Below in conjunction with accompanying drawing one embodiment of the present of invention are further described:
As shown in Figure 1, collar extension free style convergence instrument of the present invention mainly is made up of deep anchoring base bar 1, middle part connecting link 2 and collar extension free bar 3.Deep anchoring base bar 1 is 1, length 1000mm ~ 3000mm, and the front portion is anchored at boring 5 with resin anchoring agent 4, and the rear portion is threaded with more piece middle part connecting link 2; More piece middle part connecting link 2 be 2 ~ 9 end to end, concrete number confirms that according to hole depth every joint length is 1000mm ~ 3000mm; Collar extension free bar 3 is at least one, and length is 100mm, and the front portion is threaded with middle part connecting link 2.There is the threaded hole 8 with middle part connecting link 2 coupling heads 9 couplings at deep anchoring base bar 1 rear portion, and is as shown in Figure 3; There is coupling head 9 connecting link 2 front portions, middle part, and there is threaded hole 8 at the rear portion, can mate connection each other, and is as shown in Figure 4; There is coupling head 9 collar extension free bar 3 front portions, can be connected with middle part connecting link 2 couplings, and there is threaded hole 8 at the rear portion, is connected with next root collar extension free bar 3 coupling head 9, and collar extension free bar 3 surfaces indicate scale 7, and are as shown in Figure 5.The place, aperture of boring 5 is provided with the wedge shape guiding display disc 6 of fixing middle part connecting link 2, and wedge shape guiding display disc 6 length are 100mm ~ 200mm, and the wedge shape maximum radius of wedge shape guiding display disc 6 is than the big 5 ~ 8mm in aperture of boring 5, and key groove is 5～10 °.
The present invention utilizes the measuring method of above-mentioned collar extension free style convergence instrument:
A. at first be not less than the boring of 10m to the middle part that top board and two the is helped degree of depth of respectively constructing respectively waiting to observe in the tunnel perpendicular to the country rock surface; Spy on definite tunnel surrounding rock body cranny development degree of depth and relatively stable regional depth through boring, the degree of depth in relatively stable zone is generally 8 ~ 10m;
B. help respectively to construct boring that one or more length are not less than relatively stable regional depth as a survey station immediately following driving face at back and two, the quantity of boring is confirmed based on on-the-spot actual needs;
C. resin anchoring agent 4 is put into boring; The length of resin anchoring agent 4 is not less than 1000mm; Then deep anchoring base bar 1, more piece middle part connecting link 2 is connected successively and send in the boring 5 after fastening, collar extension free bar 3 is connected the place, aperture, and deep anchoring base bar 1 is connected the length sum than the little 10mm ~ 50mm of drilling depth with more piece middle part connecting link 2; After each connecting link connection finished, the bar that is rotationally connected made deep anchoring base bar 1 be anchored at resin anchoring agent 4;
D. the wedge shape display disc that leads is worn 6 and crossed collar extension free bar 3, in the aperture of wedging boring 5, be close to scar, the read-record of indicated collar extension free bar 3 figures of wedge shape guiding display disc 6 outer rims this moment is an initial value;
When roadway surrounding rock is being out of shape in the dilation process; Constantly the wedge shape indicating dial is passed to the end of collar extension free bar 3; Make collar extension free bar 3 to the hole intrinsic displacement, based on the reading that needs time recording collar extension free bar 3 figures of observation, the difference of the reading that every record is twice is the deformation velocity of country rock;
When the collar extension free bar when hole intrinsic displacement to revealed section distance is 10 ~ 20mm, next root collar extension free bar of continued access guarantees that the collar extension free bar has the outer outer length of boring that is exposed at always;
E. continuous 3 ~ 5 days, when the deformation velocity of roadway surrounding rock is lower than 1mm/d, finish observation, the reading of the figure of collar extension free bar 3 is a final reading at this moment, the difference of final reading and initial reading is the amount of convergence on the surface, tunnel between observation;
F. 10m ~ 20m distance at interval, repeating step b ~ e arranges next survey station.According to the measurement needs, arrange a plurality of survey stations, can obtain the surrouding rock deformation characteristic of a plurality of positions.
According to the difference of observation frequency, can obtain the deformation velocity of country rock, for example write down a secondary data every day, then can obtain the deformation velocity of every day; Per hour record once then can obtain deformation velocity hourly, thereby obtains accurate surrouding rock deformation rule.
Claims (4)
1. collar extension free style convergence instrument; Comprise the deep anchoring base bar (1) in resin anchoring agent (4) is anchored at boring (5), the more piece middle part connecting link (2) that links to each other with deep anchoring base bar (1); It is characterized in that: place, described boring (5) aperture is provided with the wedge shape guiding display disc (6) of fixing middle part connecting link (2), and the outer end of middle part connecting link (2) is connected with at least one collar extension free bar (3); Described deep anchoring base bar (1), the every joint length of more piece middle part connecting link (2) are 1000mm ~ 3000mm, and the every joint length of collar extension free bar (3) is 100mm; The rear portion of described deep anchoring base bar (1), more piece middle part connecting link (2) and collar extension free bar (3) is equipped with continued access threaded hole (8); The front portion of middle part connecting link (2), collar extension free bar (3) is equipped with and connects the thread connection head (9) that threaded hole (8) is complementary.
2. collar extension free style convergence instrument according to claim 1 is characterized in that: described collar extension free bar (3) surface indicates scale (7)
.
3. collar extension free style convergence instrument according to claim 1; It is characterized in that: described wedge shape guiding display disc (6) length is 100mm ~ 200mm; The wedge shape maximum radius of wedge shape guiding display disc (6) is than the big 5 ~ 8mm in aperture of boring (5), and key groove is 5～10 °.
4. measuring method according to the said collar extension free style of claim 1 convergence instrument is characterized in that:
A. be not less than the boring of 10m to the middle part that top board and two the is helped degree of depth of respectively constructing respectively waiting to observe in the tunnel perpendicular to the country rock surface; Spy on definite tunnel surrounding rock body cranny development degree of depth and relatively stable regional depth through boring, relatively stable regional depth is 8 ~ 10m;
B. help respectively to construct boring that one or more length are not less than relatively stable regional depth as a survey station immediately following driving face at back and two;
C. the resin anchoring agent (4) that length is not less than 1000mm is put into boring (5); Then deep anchoring base bar (1), more piece middle part connecting link (2) is connected successively and send in the boring (5) after fastening; Collar extension free bar (3) is connected the place, aperture; Deep anchoring base bar (1) is connected the length sum than the little 10mm ~ 50mm of drilling depth with more piece middle part connecting link (2), stirs anchoring after each connecting link connection finishes;
D. the wedge shape display disc (6) that leads is passed collar extension free bar (3); In the aperture of wedging boring (5); Be close to scar, the read-record of indicated collar extension free bar (3) figure (7) of wedge shape guiding display disc (6) outer rim this moment is an initial value;
When roadway surrounding rock is being out of shape in the dilation process; Constantly wedge shape display disc (6) is passed to the end of collar extension free bar (3); Make collar extension free bar (3) to the hole intrinsic displacement; According to the reading of needs time recording collar extension free bar (3) figure of observing (7), the difference of the reading that every record is twice is the deformation velocity of country rock;
When collar extension free bar (3) when hole intrinsic displacement to revealed section distance is 10 ~ 20mm, next root collar extension free bar (3) of continued access guarantees that collar extension free bar (3) has outer boring (5) length outward that is exposed at always;
When the deformation velocity of e. continuous 3 ~ 5 days roadway surrounding rocks was lower than 1mm/d, observation finished, and the reading of the figure (7) of collar extension free bar (3) is a final reading, and the difference of final reading and initial reading is the amount of convergence on the surface, tunnel between observation;
F. 10m ~ 20m distance at interval, repeating step b ~ e arranges next survey station; According to the measurement needs, arrange a plurality of survey stations, can obtain the surrouding rock deformation characteristic of a plurality of positions.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210189313.7A CN102679840B (en) | 2012-06-11 | 2012-06-11 | External port free type convergence instrument and measuring method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210189313.7A CN102679840B (en) | 2012-06-11 | 2012-06-11 | External port free type convergence instrument and measuring method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103499268A (en) * | 2013-09-29 | 2014-01-08 | 中国科学院武汉岩土力学研究所 | Space relative deformation measuring device for upper disc and lower disc of in-situ rock joint plane |
| CN109238161A (en) * | 2018-09-21 | 2019-01-18 | 中国矿业大学 | A kind of observation device and observation method of tunnel surface absolute convergence amount |
| CN112097724A (en) * | 2020-05-21 | 2020-12-18 | 安徽建筑大学 | Early discrimination method for stability of deep weak coal rock |
| CN113513964A (en) * | 2021-07-20 | 2021-10-19 | 淮北市平远软岩支护工程技术有限公司 | Depth detection device suitable for soft rock mass replacement of rock burst roadway |
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| CN101458069A (en) * | 2008-12-30 | 2009-06-17 | 中铁二十四局集团福建铁路建设有限公司 | Tunnel wall rock deformation monitoring method and monitoring system thereof |
| CN201277849Y (en) * | 2008-10-22 | 2009-07-22 | 中国矿业大学 | Anchor rod for measuring large deformation of laneway bottom heave |
| CN101608897A (en) * | 2009-07-08 | 2009-12-23 | 中国矿业大学 | A kind of precision rod type convergence gauge |
| CN202648584U (en) * | 2012-06-11 | 2013-01-02 | 中国矿业大学 | External port free type convergence instrument |
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2012
- 2012-06-11 CN CN201210189313.7A patent/CN102679840B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201277849Y (en) * | 2008-10-22 | 2009-07-22 | 中国矿业大学 | Anchor rod for measuring large deformation of laneway bottom heave |
| CN101458069A (en) * | 2008-12-30 | 2009-06-17 | 中铁二十四局集团福建铁路建设有限公司 | Tunnel wall rock deformation monitoring method and monitoring system thereof |
| CN101608897A (en) * | 2009-07-08 | 2009-12-23 | 中国矿业大学 | A kind of precision rod type convergence gauge |
| CN202648584U (en) * | 2012-06-11 | 2013-01-02 | 中国矿业大学 | External port free type convergence instrument |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499268A (en) * | 2013-09-29 | 2014-01-08 | 中国科学院武汉岩土力学研究所 | Space relative deformation measuring device for upper disc and lower disc of in-situ rock joint plane |
| CN103499268B (en) * | 2013-09-29 | 2016-01-27 | 中国科学院武汉岩土力学研究所 | The space relative deformation measurement mechanism of dish and lower wall in a kind of in-situ rock joint plane |
| CN109238161A (en) * | 2018-09-21 | 2019-01-18 | 中国矿业大学 | A kind of observation device and observation method of tunnel surface absolute convergence amount |
| WO2020057363A1 (en) * | 2018-09-21 | 2020-03-26 | 中国矿业大学 | Observation device and observation method for absolute convergence amount of surface of roadway |
| CN112097724A (en) * | 2020-05-21 | 2020-12-18 | 安徽建筑大学 | Early discrimination method for stability of deep weak coal rock |
| CN113513964A (en) * | 2021-07-20 | 2021-10-19 | 淮北市平远软岩支护工程技术有限公司 | Depth detection device suitable for soft rock mass replacement of rock burst roadway |
| CN113513964B (en) * | 2021-07-20 | 2023-03-17 | 淮北市平远软岩支护工程技术有限公司 | Depth detection device suitable for soft rock mass replacement of rock burst roadway |
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