CN103528727B - Next hole multiple spot fiber grating drilling hole stress proving installation of coal mine - Google Patents
Next hole multiple spot fiber grating drilling hole stress proving installation of coal mine Download PDFInfo
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- CN103528727B CN103528727B CN201310476916.XA CN201310476916A CN103528727B CN 103528727 B CN103528727 B CN 103528727B CN 201310476916 A CN201310476916 A CN 201310476916A CN 103528727 B CN103528727 B CN 103528727B
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Abstract
Next hole multiple spot fiber grating drilling hole stress monitoring device of coal mine, comprise some underground coal mine fiber grating borehole stressmeters, connecting link and Transmission Fibers, wherein, underground coal mine fiber grating borehole stressmeter comprises dynamometry beam, soaring frame, air bag and bearing, dynamometry beam comprises dynamometry crossbeam and optical fiber grating sensing core body, and soaring frame comprises fixing slide block, moving slider and dynamometry beam support, and bearing comprises pedestal and installs screw rod; Air bag is positioned on pedestal, rear and front end with respectively screw rod is installed and is fastened on pedestal, air bag and installation screw rod are hollow structure; Fixing slide block is all fixed on pedestal, and moving slider is connected by check draw-in groove with fixing slide block, and dynamometry beam support is fixedly connected with moving slider; Dynamometry crossbeam is fixedly connected with dynamometry beam support, and optical fiber grating sensing core body is fixed on dynamometry crossbeam.Next hole multiple spot fiber grating drilling hole stress monitoring device of coal mine provided by the invention, security is high, and reliability is high, and precision is high.
Description
Technical field
The present invention relates to next hole multiple spot fiber grating drilling hole stress proving installation of a kind of drilling hole stress proving installation, particularly a kind of coal mine.
Background technology
Underground coal mine is produced, and safety is the most important thing, and colliery danger is at all times.Therefore, safety monitoring is the work must carried out in the moment in coal production.Coal petrography tunnel is in advance of the face process, and will cause region of stress concentration in its local, peak stress may reach 2 times even more than 3,4 times of normal stress value.Huge peak stress is formed, and for coal petrography tunnel, just makes uprushing of security incident probability of happening.No matter from theoretical analysis, or summary of experience, for Gas Outburst mine, region of stress concentration is gas burst accident generation area often; For rock burst mine, region of stress concentration is exactly often rock burst accident generation area.Therefore, coal and rock stress monitoring is carried out at above-mentioned zone imperative.But at present, the sensor used in monitoring generally all adopts vibrating wire pressure sensor, piezoresistive pressure sensor or capacitance pressure transducer, sensor.Such as, patent CN101113674B discloses a kind of pressure transducer for colliery stress monitoring, and namely pressure transducer selects piezoresistive pressure sensor or capacitance pressure transducer, sensor.This kind of sensor all needs stress or strain signal to be converted into electric signal transmission to storing collecting device, therefore, is generally subject to comparatively significantly environmental impact, such as, in wet environment, due to electric signal short circuit, may cause Signal transmissions failure; Due to the existence in other magnetic fields in environment, the reliability of electric signal transmission also will be had influence on.
In sum, still do not have one effectively can avoid environmental interference in prior art, proof stress monitors the drilling hole stress sensor normally carried out.
Summary of the invention
Greatly affected by environment in order to solve drilling hole stress monitoring sensor in prior art, the problem of monitoring reliability difference, the invention provides next hole multiple spot fiber grating drilling hole stress proving installation of a kind of coal mine.
The technical solution used in the present invention is as follows:
Underground coal mine fiber grating borehole stressmeter, comprise dynamometry beam, soaring frame, air bag and bearing, described dynamometry beam comprises dynamometry crossbeam and optical fiber grating sensing core body, described soaring frame comprises front fixing slide block, rear fixing slide block, front moving slider, rear moving slider, front dynamometry beam support and rear dynamometry beam support, and described bearing comprises pedestal, screw rod is installed in front end and screw rod is installed in rear end; Described air bag is positioned on described pedestal, installs screw rod and rear end respectively and installs screw rod and be fastened on described pedestal, described air bag by rear and front end with described front end, and described front end is installed screw rod and rear end and installed screw rod and be hollow structure; Described front fixing slide block and described rear fixing slide block are all fixed on described pedestal, described front moving slider and described rear moving slider are connected by check draw-in groove with described front fixing slide block and described rear fixing slide block respectively, and described front dynamometry beam support is fixedly connected with described rear moving slider with described front moving slider respectively with described rear dynamometry beam support; Described dynamometry crossbeam is fixedly connected with described rear dynamometry beam support respectively with described front dynamometry beam support, and described optical fiber grating sensing core body is fixed on described dynamometry crossbeam.
In above-mentioned underground coal mine fiber grating borehole stressmeter, be fixedly connected with between described front dynamometry beam support and described rear dynamometry beam support, form an one-piece construction.
In above-mentioned underground coal mine fiber grating borehole stressmeter, described front dynamometry beam support and described rear dynamometry beam support upper end form groove, and described dynamometry crossbeam is positioned in described groove, form simple beam structure.
In above-mentioned underground coal mine fiber grating borehole stressmeter, described air bag comprises utricule, front buckle and rear buckle.
In above-mentioned underground coal mine fiber grating borehole stressmeter, described utricule adopts rubber manufacture, and described front buckle and described rear buckle adopt metal material manufacture.
Next hole multiple spot fiber grating drilling hole stress proving installation of coal mine, comprise above-mentioned underground coal mine fiber grating borehole stressmeter, some connecting links and Transmission Fibers, the described optical fiber grating sensing core body grid size of underground coal mine fiber grating borehole stressmeter described in each is not all etc., during connection, the little described underground coal mine fiber grating borehole stressmeter of described optical fiber grating sensing core body grid is front; Described connecting link front and back end all forms screw thread, and install screw rod and rear end respectively with the described front end of described underground coal mine fiber grating borehole stressmeter and install screw flight and be connected, described connecting link is hollow structure; Described Transmission Fibers is connected with the described optical fiber grating sensing core body of underground coal mine fiber grating borehole stressmeter described in each successively, makes all described underground coal mine fiber grating borehole stressmeters form series relationship.
In next hole multiple spot fiber grating drilling hole stress proving installation of above-mentioned coal mine, described connecting link is made up of the round steel pipe that some are connected with each other, and the total length of described connecting link is 1m.
In next hole multiple spot fiber grating drilling hole stress proving installation of above-mentioned coal mine, described Transmission Fibers periphery is coated with layer protective layer.
Technique scheme of the present invention has the following advantages compared to existing technology:
1. underground coal mine fiber grating borehole stressmeter provided by the invention, adopts grating light level core body to respond to coal and rock ess-strain change in boring, does not need energising, therefore, the present invention is not by the impact of the ambient humidity, temperature etc. of ambient magnetic field environment, and security is high, and reliability is high.
2. underground coal mine fiber grating borehole stressmeter provided by the invention, adopt the mechanical mechanism such as bearing, soaring frame to realize coal and rock ess-strain monitoring in boring, therefore, structure of the present invention is simple, convenient for installation and maintenance, low cost of manufacture and monitoring accuracy is high.
3. underground coal mine fiber grating borehole stressmeter provided by the invention, the soaring frame adopted is formed by fixing slide block, moving slider and dynamometry beam support, the acting force of air bag to soaring frame can be transmitted accurately, dynamometry beam and coal and rock the wall of a borehole are fitted tightly, and can ensure that the maintenance of respective position is stablized constant, therefore, monitoring effect of the present invention is good, reliability is high, and precision is high.
4. underground coal mine fiber grating borehole stressmeter provided by the invention, the dynamometry beam support of soaring frame adopts separate front and back structure, and be convenient to control the installation accuracy between soaring frame and dynamometry beam, therefore, monitoring accuracy of the present invention is high.
5. next hole multiple spot fiber grating drilling hole stress proving installation of coal mine provided by the invention, owing to adopting underground coal mine fiber grating borehole stressmeter, connecting link and Transmission Fibers structure, therefore, the present invention can realize the stress monitoring of a hole multiple spot in coal and rock boring eaily, effectively save boring, installation procedure, and monitoring accuracy is high.
Accompanying drawing explanation
In order to make content of the present invention be more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 arranges schematic diagram in next hole multiple spot fiber grating drilling hole stress proving installation coal and rock boring of coal mine of the present invention;
Fig. 2 is underground coal mine fiber grating borehole stressmeter front elevation of the present invention;
Fig. 3 is dynamometry beam front elevation in underground coal mine fiber grating borehole stressmeter of the present invention;
Fig. 4 is soaring frame front elevation in underground coal mine fiber grating borehole stressmeter of the present invention;
Fig. 5 is air bag front elevation in underground coal mine fiber grating borehole stressmeter of the present invention;
Fig. 6 is bearing front elevation in underground coal mine fiber grating borehole stressmeter of the present invention.
Be labeled as in figure; 1-dynamometry beam, 101-dynamometry crossbeam, 102-optical fiber grating sensing core body, 2-rises frame, before 201-, fixing slide block, fixes slide block after 202-, moving slider before 203-, moving slider after 204-, dynamometry beam support before 205-, dynamometry beam support after 206-, 3-air bag, 301-utricule, buckle before 302-, buckle after 303-, 4-bearing, 401-pedestal, screw rod is installed in 402-front end, and screw rod is installed in 403-rear end, 5-underground coal mine fiber grating borehole stressmeter, 6-connecting link, 7-Transmission Fibers.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
As shown in figures 1 to 6, be the preferred embodiment of underground coal mine fiber grating borehole stressmeter of the present invention and next hole multiple spot fiber grating drilling hole stress proving installation of coal mine.
Described underground coal mine fiber grating borehole stressmeter, comprise dynamometry beam 1, soaring frame 2, air bag 3 and bearing 4, described dynamometry beam 1 comprises dynamometry crossbeam 101 and optical fiber grating sensing core body 102, described soaring frame 2 comprises front fixing slide block 201, rear fixing slide block 202, front moving slider 203, rear moving slider 204, front dynamometry beam support 205 and rear dynamometry beam support 206, and described bearing 4 comprises pedestal 401, screw rod 402 is installed in front end and screw rod 403 is installed in rear end; Described air bag 3 is positioned on described pedestal 401, by rear and front end, screw rod 402 and rear end are installed with described front end respectively screw rod 403 is installed is fastened on described pedestal 401, described air bag 3, described front end installs screw rod 402 and rear end installation screw rod 403 is hollow structure; Described front fixing slide block 201 and described rear fixing slide block 202 are all fixed on described pedestal 401, described front moving slider 203 and described rear moving slider 204 are connected by check draw-in groove with described front fixing slide block 201 and described rear fixing slide block 202 respectively, and described front dynamometry beam support 205 is fixedly connected with described rear moving slider 204 with described front moving slider 203 respectively with described rear dynamometry beam support 206; Described dynamometry crossbeam 101 is fixedly connected with described rear dynamometry beam support 206 respectively with described front dynamometry beam support 205, and described optical fiber grating sensing core body 102 is fixed on described dynamometry crossbeam 101.
In the present embodiment, be fixedly connected with between described front dynamometry beam support 205 and described rear dynamometry beam support 206, form an one-piece construction.
In the present embodiment, described front dynamometry beam support 205 and described rear dynamometry beam support 206 upper end form groove, and described dynamometry crossbeam 101 is positioned in described groove, form simple beam structure.
In the present embodiment, described air bag 3 comprises utricule 301, front buckle 302 and rear buckle 303.
In the present embodiment, described utricule 301 adopts rubber manufacture, and described front buckle 302 and described rear buckle 303 adopt metal material manufacture.
Next hole multiple spot fiber grating drilling hole stress proving installation of described coal mine, comprise the underground coal mine fiber grating borehole stressmeter 5 described in some the present embodiment, some connecting links 6 and Transmission Fibers 7, described optical fiber grating sensing core body 102 grid size of underground coal mine fiber grating borehole stressmeter 5 described in each is not all etc., during connection, the little described underground coal mine fiber grating borehole stressmeter 5 of described optical fiber grating sensing core body 102 grid is front; Described connecting link 6 front and back end all forms screw thread, and install screw rod 402 and rear end respectively with the described front end of described underground coal mine fiber grating borehole stressmeter 5 and install screw rod 403 and be threaded, described connecting link 6 is hollow structure; Described Transmission Fibers 7 is connected with the described optical fiber grating sensing core body 102 of underground coal mine fiber grating borehole stressmeter 5 described in each successively, makes all described underground coal mine fiber grating borehole stressmeters 5 form series relationship.
In the present embodiment, described connecting link 6 is made up of the round steel pipe that some are connected with each other, and the total length of described connecting link is 1mo
In the present embodiment, described Transmission Fibers 7 periphery is coated with layer protective layer.
Described driving face dust collection method, use the driving face dust pelletizing system in the present embodiment to carry out dedusting, its step comprises:
Underground coal mine fiber grating borehole stressmeter number of assembling steps of the present invention is;
A () is smoothed out with the fingers described front end installation screw rod 402 and is installed to described support body 401 front end; Spiro rod rear end 403 is installed in described rear end and is installed to described support body 401 rear end;
B described air bag 3 is put into described support body 401 by (), described front buckle 302 and rear buckle 303 are installed respectively screw rod 402 with the described described front end stretched in described support body 401 and install screw rod 403 with described rear end and be connected respectively, fastening;
C described forward and backward fixing slide block 201,202 is installed on described support body 401 by (), and fixing;
D described forward and backward moving slider 203,204 is installed fixing by () respectively with described forward and backward dynamometry beam support 205,206;
E () smoothes out with the fingers described forward and backward moving slider 203, the check draw-in groove on 204 coincide then by described forward and backward dynamometry beam support 205 with the check draw-in groove on described forward and backward fixing slide block 201202 respectively, and 206 are fixed connection;
F (), by described dynamometry crossbeam 101, is installed to described forward and backward dynamometry beam support 205, in the groove in 206, and fixing;
G described optical fiber grating sensing core body 102 is finally installed on described dynamometry crossbeam 102 by (), described underground coal mine fiber grating borehole stressmeter has been assembled.
Next hole multiple spot fiber grating drilling hole stress proving installation of coal mine of the present invention installation steps in coal and rock boring are:
A () first assembles underground coal mine fiber grating borehole stressmeter 5 described in several by above-mentioned steps;
B the front end of a described mounting rod 6 is installed screw rod 403 with the described rear end of a described underground coal mine fiber grating borehole stressmeter 5 that will be connected and is alignd by (), connection is also fastening;
C () is smoothed out with the fingers described Transmission Fibers 7 and is connected with optical fiber grating sensing core body 102 rear end described in above-mentioned underground coal mine fiber grating borehole stressmeter 5;
D () smoothes out with the fingers above-mentioned mounting rod 6 and described underground coal mine fiber grating borehole stressmeter 5 loads in coal and rock boring to be monitored in the lump;
The described front end of e described underground coal mine fiber grating borehole stressmeter 5 that the rear end of above-mentioned mounting rod 6 will be connected with the next one by () is installed screw rod 402 and is alignd, connection is also fastening, guarantees that the grid in this above-mentioned underground coal mine fiber grating borehole stressmeter 5 of grid in described underground coal mine fiber grating borehole stressmeter 5 is large;
F above-mentioned Transmission Fibers 7 connects with optical fiber grating sensing core body 102 front end described in the next one be connected described underground coal mine fiber grating borehole stressmeter 5 by ();
G () repeats step (b)-(f), the number of the described underground coal mine fiber grating borehole stressmeter 5 that multiplicity connects as required is determined;
H airduct is connected with the rear end of mounting rod 6 described in last root by (), add blast, and under the effect of blast, described air bag 3 is heaved, and smoothes out with the fingers described soaring frame 2 and dynamometry beam 1 entirety pushes coal and rock the wall of a borehole to, laminating contact.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among protection scope of the present invention.
Claims (8)
1. underground coal mine fiber grating borehole stressmeter, it is characterized in that: comprise dynamometry beam (1), soaring frame (2), air bag (3) and bearing (4), described dynamometry beam (1) comprises dynamometry crossbeam (101) and optical fiber grating sensing core body (102), fixing slide block (201) before described soaring frame (2) comprises, rear fixing slide block (202), front moving slider (203), rear moving slider (204), front dynamometry beam support (205) and rear dynamometry beam support (206), described bearing (4) comprises pedestal (401), front end installs screw rod (402) and screw rod (403) is installed in rear end,
Described air bag (3) is positioned on described pedestal (401), by rear and front end, screw rod (402) and rear end are installed with described front end respectively screw rod (403) is installed is fastened on described pedestal (401), described air bag (3), described front end installs screw rod (402) and rear end installation screw rod (403) is hollow structure;
Described front fixing slide block (201) and described rear fixing slide block (202) are all fixed on described pedestal (401), described front moving slider (203) and described rear moving slider (204) are connected by check draw-in groove with described front fixing slide block (201) and described rear fixing slide block (202) respectively, and described front dynamometry beam support (205) is fixedly connected with described rear moving slider (204) with described front moving slider (203) respectively with described rear dynamometry beam support (206);
Described dynamometry crossbeam (101) is fixedly connected with described rear dynamometry beam support (206) respectively with described front dynamometry beam support (205), and described optical fiber grating sensing core body (102) is fixed on described dynamometry crossbeam (101).
2. underground coal mine fiber grating borehole stressmeter according to claim 1, is characterized in that: be fixedly connected with between described front dynamometry beam support (205) and described rear dynamometry beam support (206), form an one-piece construction.
3. underground coal mine fiber grating borehole stressmeter according to claim 2, it is characterized in that: described front dynamometry beam support (205) and described rear dynamometry beam support (206) upper end form groove, described dynamometry crossbeam (101) is positioned in described groove, forms simple beam structure.
4. underground coal mine fiber grating borehole stressmeter according to claim 3, is characterized in that: described air bag (3) comprises utricule (301), front buckle (302) and rear buckle (303).
5. underground coal mine fiber grating borehole stressmeter according to claim 4, it is characterized in that: described utricule (301) adopts rubber manufacture, described front buckle (302) and described rear buckle (303) adopt metal material manufacture.
6. next hole multiple spot fiber grating drilling hole stress proving installation of coal mine, it is characterized in that: comprise the arbitrary described underground coal mine fiber grating borehole stressmeter (5) of some claim 1-5, some connecting links (6) and Transmission Fibers (7), described optical fiber grating sensing core body (102) grid size of underground coal mine fiber grating borehole stressmeter (5) described in each is not all etc., during connection, the little described underground coal mine fiber grating borehole stressmeter (5) of described optical fiber grating sensing core body (102) grid is front;
Described connecting link (6) front and back end all forms screw thread, install screw rod (402) and rear end respectively to install screw rod (403) be threaded with the described front end of described underground coal mine fiber grating borehole stressmeter (5), described connecting link (6) is hollow structure;
Described Transmission Fibers (7) is connected with the described optical fiber grating sensing core body (102) of underground coal mine fiber grating borehole stressmeter (5) described in each successively, makes all described underground coal mine fiber grating borehole stressmeters (5) form series relationship.
7. next hole multiple spot fiber grating drilling hole stress proving installation of coal mine according to claim 6, it is characterized in that: described connecting link (6) is made up of the round steel pipe that some are connected with each other, the total length of described connecting link is 1m.
8. next hole multiple spot fiber grating drilling hole stress proving installation of coal mine according to claim 7, is characterized in that: described Transmission Fibers (7) periphery is coated with layer protective layer.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105784221B (en) * | 2016-04-08 | 2018-08-03 | 山东科技大学 | Lead abutment pressure monitoring method based on fiber bragg grating pressure sensor |
| CN108590628A (en) * | 2018-06-28 | 2018-09-28 | 中国矿业大学(北京) | A kind of device and method of monitoring coal body drilling transformation-temperature-gas flow |
| CN111764893B (en) * | 2020-07-07 | 2023-03-03 | 中煤科工集团西安研究院有限公司 | Coal mine underground horizontal deep hole fiber bragg grating strain sensor arrangement device and construction method thereof |
| CN115095316B (en) * | 2022-06-20 | 2025-01-28 | 山东道宽智能科技有限公司 | A waterproof mining optical fiber drilling stress sensor based on 5G fusion technology |
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| CN201532272U (en) * | 2009-11-17 | 2010-07-21 | 上海龙能自动化设备有限公司 | Opening force detecting device of coiler belt catch |
| CN202018351U (en) * | 2011-04-07 | 2011-10-26 | 郑州大学 | Pore edge stress detection system of composite open pore structure |
| CN103033297A (en) * | 2012-12-10 | 2013-04-10 | 中国船舶重工集团公司第七一一研究所 | Analysis meter for residual stress distribution along depth |
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| US8208767B2 (en) * | 2009-11-10 | 2012-06-26 | Baker Hughes Incorporated | Sensor array configuration for extending useful sensing length of a swept-wavelength interferometry based system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201532272U (en) * | 2009-11-17 | 2010-07-21 | 上海龙能自动化设备有限公司 | Opening force detecting device of coiler belt catch |
| CN202018351U (en) * | 2011-04-07 | 2011-10-26 | 郑州大学 | Pore edge stress detection system of composite open pore structure |
| CN103033297A (en) * | 2012-12-10 | 2013-04-10 | 中国船舶重工集团公司第七一一研究所 | Analysis meter for residual stress distribution along depth |
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