CN204899915U - Gas ket temperature field monitoring devices is transferred to mine tunnel country rock - Google Patents
Gas ket temperature field monitoring devices is transferred to mine tunnel country rock Download PDFInfo
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- CN204899915U CN204899915U CN201520284488.5U CN201520284488U CN204899915U CN 204899915 U CN204899915 U CN 204899915U CN 201520284488 U CN201520284488 U CN 201520284488U CN 204899915 U CN204899915 U CN 204899915U
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- temperature
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- measuring optical
- temperature measurement
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Abstract
The utility model relates to a coal mine safety monitoring technology field discloses a gas ket temperature field monitoring devices is transferred to mine tunnel country rock, and the mine tunnel lateral wall is provided with at least one drilling, monitoring devices includes surveillance center, temperature measurement host computer and the temperature measurement optical fiber that at least one is used for gathering the light signal, temperature measurement optical fiber has been put to the equipartition in the drilling, and temperature measurement optical fiber all links to each other with the temperature measurement host computer through the looped netowrk, and the temperature measurement host computer passes through RS232 or the RS485 bus links to each other with the surveillance center, the temperature measurement host computer is used for sending the laser signal to temperature measurement optical fiber, receives the laser signal that is returned by the temperature measurement optical fiber scattering to the sharp light signal conversion who returns the scattering is temperature signal, sends temperature signal to the surveillance center. The utility model discloses fail safe nature is good, positioning accuracy is high, anti -electromagnetic interference can just can carry out tunnel country rock accent gas ket temperature monitoring by the reinforce in real time, consecutively.
Description
Technical field
The utility model relates to coal mine safety monitoring technical field, belongs to coal mine downhole safety exploitation, is specifically related to a kind of mine laneway heat adjustment circle of wall rock thermal field monitoring device.
Background technology
Along with the increase of the pit mining degree of depth, ground temperature constantly increases, and causes temperature in ore deposit constantly to raise.Operation in high temperature environments, the volume of perspiration of people can reach 5 ~ 10 times of normal temperature operation, and a large amount of sodium nitrides, water soluble vitamin, mineral salt are discharged thereupon, and the normal water salt metabolism of human body is destroyed, thus occurs the pathologies such as heat cramps.People is long period work in warm air, heatstroke can occur, faint, vomit and the disease such as eczema.Because hygrothermal environment can cause certain dysfunction of people, as drowsy, disposition is irritated, cause accident to occur, affect personal safety.
Mine heat evil more and more becomes the urgent problem affecting mine safety High-efficient Production.In heat source of underground mine, rock heat accounts for sizable ratio, and in entry, distinguished and admirable increase that is dry, wet temp mainly causes due to rock heat.
In mine cooling engineering, roadway tune gas ket is an important concept.Research heat adjustment circle of wall rock distribution law of temperature field and radius size thereof are the bases that grasp country rock regulates to distinguished and admirable heat dissipation capacity, air flow in laneway thermal parameter prediction and calculation and mine air.The rock mass do not excavated is in a kind of thermal equilibrium state, and namely the temperature of rock mass is primitive rock temperature.When after rock excavation dash, heat balance is destroyed, and heat is constantly taken away by air-flow, and rock mass internal temperature is constantly reduced.Along with the increase of ventilation time, temperature near the rock mass in tunnel constantly reduces, and temperature reduces scope and constantly extends to rock mass inside, until reach new heat balance, this extends the tune gas ket that thickness is tunnel, generally, roadway adjusts gas ket just to refer to the comparatively significant region of roadway ambient temperature change.Have definition in document to adjust gas ket to be the region that roadway surrounding rock temperature reduction exceedes 0.1% of Virgin rock temperature, roadway ambient temperature meets the region of following formula for adjusting gas ket specifically:
In formula: t
iany point temperature in-country rock;
T-country rock original temperature.
Adjust gas ket radius from center, tunnel to adjusting the distance on circle border to be called, the many factors such as physical dimension, convection transfer rate, wall humidity coefficient, distinguished and admirable relative humidity in the thermophysical property of its size and Virgin rock temperature, rock, dash time, tunnel is in close relations.
The following two problems of gas ket researcher's major concern is adjusted to roadway:
(1) temperature of Surrounding Rock Masses of Roadway is how along with the change of roadway air temperature changes, i.e. so-called temperature-responsive problem.
(2) when air average temperature of the whole year is not equal to primitive rock temperature in roadway, gas ket scope is adjusted to be how time to time change, the i.e. so-called scaling problem adjusting gas ket.
Many scholars have done a large amount of research work in country rock heat Calculation, propose multiple calculating rock heat method, but most of computational methods all exist a little problem, or precision is on the low side or method complicated.Want clear above problem, need to be grasped the Characteristics of The Distribution of Temperature that roadway surrounding rock adjusts gas ket, method is that the temperature of directly exchanging gas ket measures the most accurately and effectively.
By arranging that in boring the Temperature Distribution that roadway surrounding rock adjusts gas ket monitored by thermistor at present, its drawback mainly contains 4 points: one be a heat adjustment circle of wall rock monitoring boring can only arrange a thermistor probe, realize the monitoring that roadway surrounding rock adjusts gas ket radius (being generally tens meters), need construction tens even up to a hundred borings, then at layout thermistor probe of holing one by one, install huge; Two is that monitoring point owing to arranging in whole mine is numerous, need monitoring point manual operation value repeatedly (every day at least needs to carry out three manual measurements), monitoring periods long (usually needing monitoring mine being carried out to the several years), daily monitoring labour intensity is large; Three is to reduce drilling construction quantity, can only increase the concentration gradient of boring, namely decrease the quantity of monitoring point, cause available monitored data limited thus; Four is that thermistor probe monitoring accuracy is poor, and its monitoring probe and monitoring wiring very easily damage, regular maintenance difficulty.
Summary of the invention
The purpose of this utility model is: overcome prior art deficiency, provides that a kind of security reliability is good, positioning precision is high, anti-electromagnetic interference capability is strong and can carry out the mine laneway heat adjustment circle of wall rock thermal field monitoring device that roadway surrounding rock adjusts gas ket temperature monitoring in real time, continuously.
The technical solution of the utility model is as follows:
Mine laneway heat adjustment circle of wall rock thermal field monitoring device, mine laneway sidewall is provided with at least one boring, and its special character is: described monitoring device comprises Surveillance center, thermometric main frame and at least one is for gathering the temperature-measuring optical fiber of optical signal;
All be furnished with temperature-measuring optical fiber in described boring, temperature-measuring optical fiber is all connected with thermometric main frame by looped network, and thermometric main frame is connected with Surveillance center by RS232 or RS485 bus;
Thermometric main frame is used for sending laser signal to temperature-measuring optical fiber, receives by the back scattered laser signal of temperature-measuring optical fiber, and back scattered laser signal is converted to temperature signal, temperature signal is sent to Surveillance center.
Above-mentioned temperature-measuring optical fiber is connected with looped network by optical Fiber Closure.
Above-mentioned thermometric main frame is that distribution type fiber-optic temperature-sensitive detects main frame EL2000-DTS-III.
Temperature-measuring optical fiber in boring and boring between be filled with sealing material.
Above-mentioned sealing material is yellow mud or gypsum.
Above-mentioned drillhole height is positioned at tunnel wall and hangs down high middle part.
Above-mentioned looped network is down-hole industry looped network.
The utility model has following technique effect:
(1) the utility model can monitor the temperature that temperature-measuring optical fiber is located continuously along the line, can carry out continual automatic measurement, and measurement category is wide, and positioning precision is high, and the spacing that on same temperature-measuring optical fiber, adjacent temperature monitoring is selected can reach 0.5-1 rice;
(2) the utility model adopts temperature-measuring optical fiber as sensor, does not have the signal of telecommunication, and essential safety is reliable, do not exist product itself anti-riot, cause the problems such as burning things which may cause a fire disaster;
(3) temperature-measuring optical fiber of the present utility model is made by quartzy material, and corrosion resistance is strong, can monitoring heat adjustment circle of wall rock thermal field several years even many decades continuously, durable in use;
(4) the utility model installation cycle is short, expense is little, installs, easy construction, advantage of lower cost when even can run, and is easy to promote.
Accompanying drawing explanation
Fig. 1 is layout schematic diagram of the present utility model;
Fig. 2 is the temperature-measuring optical fiber schematic diagram in the utility model boring;
Fig. 3 is embodiment system layout of the present utility model;
Fig. 4 is the flow chart based on mining heat adjustment circle of wall rock radium computing method of the present utility model.
Reference numeral: 1-temperature-measuring optical fiber, 2-coal and rock, 3-yellow mud, 4-fusion joining disk, 5-down-hole industry looped network, 10-1 ﹟ connection roadway, 11-auxiliary shaft detours, and 12-tri-ring sump detours, 13-1306 work plane.
Detailed description of the invention
The utility model provides a kind of mine laneway heat adjustment circle of wall rock thermal field monitoring device, mine laneway sidewall is provided with at least one boring, boring can be arranged in tunnel wall and to hang down high middle part, and monitoring device comprises Surveillance center, thermometric main frame and at least one is for gathering the temperature-measuring optical fiber 1 of optical signal.
All temperature-measuring optical fiber is furnished with in each boring of the present utility model, and the layout of temperature-measuring optical fiber is applied to boring from boring bottom always, temperature-measuring optical fiber is all connected with thermometric main frame by looped network, and thermometric main frame is connected with Surveillance center by RS232 or RS485 bus; Looped network specifically can be down-hole industry looped network 5.
Thermometric main frame is used for sending laser signal to temperature-measuring optical fiber, receive by the back scattered laser signal of temperature-measuring optical fiber, and back scattered laser signal is converted to temperature signal, and temperature signal is sent to Surveillance center, Surveillance center shows monitoring the information obtained in real time and records.
Temperature-measuring optical fiber is specifically connected with looped network by optical Fiber Closure; Thermometric main frame can adopt distribution type fiber-optic temperature-sensitive to detect main frame EL2000-DTS-III.Temperature-measuring optical fiber in boring and boring between be filled with sealing material, sealing material can carry out shutoff to boring, sealing material can adopt yellow mud 3 or gypsum, uses sealing material that hell is carried out shutoff, and preventing ambient atmos from entering boring affects the accuracy of monitor temperature.
The utility model in a distributed manner temperature-measuring optical fiber is temperature sensing device, according to optical time domain reflection and the backward Raman scattering temperature effect of optical fiber, by adjusting gas ket construction drill at the different roadway surrounding rock of underground coal mine, temperature-measuring optical fiber is layed in boring, laser beam is transmitted in temperature-measuring optical fiber by thermometric main frame, and real-time reception is returned along temperature-measuring optical fiber scattering, the Raman diffused light of gas ket real time temperature information is adjusted with roadway surrounding rock, thermometric main frame carries out treatment and analysis to these optical signals, draw the temperature distribution information on whole piece optical fiber, again by gained Signal transmissions to ground monitoring center, realize the Real-Time Monitoring to underworkings heat adjustment circle of wall rock and online record.For the prediction of down-hole airflow temperature and the measure of formulation mine cooling provide important reference.
The thermometric of temperature-measuring optical fiber and humidity range are respectively-10 DEG C ~ 60 DEG C and 0 ~ 100%, are arranged in the boring of mine laneway heat adjustment circle of wall rock, the temperature information of diverse location country rock in Real-time Collection boring;
Thermometric Selection of chiller flame-proof mine optic fiber thermometer, temperature-responsive scope is not less than the monitoring range of temperature-measuring optical fiber, and sampling interval is less than 1 meter, and positioning precision is less than 1 meter, and temperature resolution is less than ± and 0.05 DEG C, be connected with temperature-measuring optical fiber;
Implementation method of the present utility model, comprises the following steps:
Step 1, temperature-measuring optical fiber are demarcated: adopt thermostatic water-bath method or temperature control box temperature-raising method to demarcate temperature-measuring optical fiber in laboratory, ensure accuracy time temperature-measuring optical fiber is tested at the scene and precision;
Step 2, monitoring boring are arranged: at roadway surrounding rock monitoring point place construction drill, aperture is determined according to construction technology;
Step 3, temperature-measuring optical fiber are installed: be fit in boring by methods such as wooden stick cuttings by temperature-measuring optical fiber;
Step 4, sealing of hole: use sealing material that hell is carried out shutoff, preventing ambient atmos from entering boring affects the accuracy of monitor temperature;
Step 5, system connect: temperature-measuring optical fiber, down-hole industry looped network 5, ground multi-route measuring temperature main frame are connected according to annexation of the present utility model with Surveillance center, realize Real-Time Monitoring and the record of heat adjustment circle of wall rock temperature.
Based on the computational methods of mining heat adjustment circle of wall rock radius of the present utility model, when the heat adjustment circle of wall rock radius precision that requirement calculates is ε, the thermometric range resolution ratio of temperature control main frame is r, gas ket radius is adjusted to be R, the original country rock temperature of mine is T, from monitoring hell, the temperature value of i-th fiber-optic monitoring point is t
[i], the flow chart of computational methods is shown in Fig. 4.
Below in conjunction with accompanying drawing, the utility model is further described, but therefore the utility model is not limited among described practical range.
East China underground thermal pollution is particularly serious, annual mine laneway country rock and down-hole is distinguished and admirable there is exchange heat, know that different time sections mine heat adjustment circle of wall rock is to distinguished and admirable long-term " heating " or " cooling " effect, needs the temperature variations of exchanging gas ket to measure to study.Be arranged in mine country rock tunnel using temperature-measuring optical fiber as temperature element, by down-hole industry looped network, monitor signal is transferred to ground thermometric main frame, after signal receiving, temperature information is transferred on the Industrial Personal Computer (IPC) of Surveillance center, realize real time on-line monitoring and preservation that roadway surrounding rock adjusts gas ket.Detailed description of the invention is as follows:
As shown in Figure 3, select testing location to be respectively: auxiliary shaft end opening 1., main shaft end opening 2., southern 1# large lane air measuring station one 3. (apart from auxiliary shaft mouth 450m), southern 2# large lane air measuring station two 4. (apart from auxiliary shaft mouth 300m), parking lot, top 5. (apart from auxiliary shaft mouth 900m), middle yard 6. (apart from auxiliary shaft mouth 1500m), parking lot, bottom 7. (apart from auxiliary shaft mouth 2000m), 1306 air intake lanes 8., 1307 driving faces 9..
On tunnel coal and rock 2 wall in above 9 monitoring places, construction diameter is the monitoring boring of Φ respectively, and drilling depth is L, and its design parameter value is determined by parameters such as coal bed texture type, coal seam thickness, the original country rock temperature of mine.
Temperature-measuring optical fiber selects 125 microns/2 (heart yearn/covering) gradient index communication multimode fibre, decay <0.6 decibel/kilometer, wavelength 1300 nanometer, to be sent into by optical fiber in the monitoring of having constructed holes by wooden stick groove engraving.
Use yellow mud 3 as sealing material, yellow mud extruding is entered boring, until the remaining space whole fill of whole boring is full.
To be connected with wire jumper with flange or fusion joining disk 4 and industrial to the optical fiber of boring outer end and down-hole looped network is connected.
The thermometric Selection of chiller distribution type fiber-optic temperature-sensitive on ground detects main frame EL2000-DTS-III, by signal demodulation in thermometric main frame of down-hole industry looped network transmission, adopt RS485 bus to connect Industrial Personal Computer (IPC) and thermometric main frame, the temperature data of the most each monitoring boring is presented on Industrial Personal Computer (IPC) display screen.
Protection domain of the present utility model is not limited to detailed description of the invention of the present utility model, and under the prerequisite not departing from inventive concept, any deduction do the utility model or alternative, all should be considered as belonging to protection domain of the present utility model.
Claims (7)
1. mine laneway heat adjustment circle of wall rock thermal field monitoring device, mine laneway sidewall is provided with at least one boring, it is characterized in that: described monitoring device comprises Surveillance center, thermometric main frame and at least one is for gathering the temperature-measuring optical fiber of optical signal;
All be furnished with temperature-measuring optical fiber in described boring, temperature-measuring optical fiber is all connected with thermometric main frame by looped network, and thermometric main frame is connected with Surveillance center by RS232 or RS485 bus;
Thermometric main frame is used for sending laser signal to temperature-measuring optical fiber, receives by the back scattered laser signal of temperature-measuring optical fiber, and back scattered laser signal is converted to temperature signal, temperature signal is sent to Surveillance center.
2. mine laneway heat adjustment circle of wall rock thermal field according to claim 1 monitoring device, is characterized in that: described temperature-measuring optical fiber is connected with looped network by optical Fiber Closure.
3. mine laneway heat adjustment circle of wall rock thermal field according to claim 2 monitoring device, is characterized in that: described thermometric main frame is that distribution type fiber-optic temperature-sensitive detects main frame EL2000-DTS-III.
4. according to the arbitrary described mine laneway heat adjustment circle of wall rock thermal field monitoring device of claims 1 to 3, it is characterized in that: the temperature-measuring optical fiber in boring and be filled with sealing material between boring.
5. mine laneway heat adjustment circle of wall rock thermal field according to claim 4 monitoring device, is characterized in that: described sealing material is yellow mud or gypsum.
6. mine laneway heat adjustment circle of wall rock thermal field according to claim 5 monitoring device, is characterized in that: drillhole height is positioned at tunnel wall and hangs down high middle part.
7. mine laneway heat adjustment circle of wall rock thermal field according to claim 6 monitoring device, is characterized in that: described looped network is down-hole industry looped network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520284488.5U CN204899915U (en) | 2015-05-05 | 2015-05-05 | Gas ket temperature field monitoring devices is transferred to mine tunnel country rock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520284488.5U CN204899915U (en) | 2015-05-05 | 2015-05-05 | Gas ket temperature field monitoring devices is transferred to mine tunnel country rock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204899915U true CN204899915U (en) | 2015-12-23 |
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ID=54922101
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520284488.5U Expired - Fee Related CN204899915U (en) | 2015-05-05 | 2015-05-05 | Gas ket temperature field monitoring devices is transferred to mine tunnel country rock |
Country Status (1)
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| CN (1) | CN204899915U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888651A (en) * | 2016-04-28 | 2016-08-24 | 安徽蓝海之光科技有限公司 | Mining online pressure-measuring device based on optical fiber |
| CN107101743A (en) * | 2017-04-24 | 2017-08-29 | 安徽理工大学 | The monitoring system and method for comprehensive distributed prevention spontaneous combustion of coal gangue hill |
-
2015
- 2015-05-05 CN CN201520284488.5U patent/CN204899915U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888651A (en) * | 2016-04-28 | 2016-08-24 | 安徽蓝海之光科技有限公司 | Mining online pressure-measuring device based on optical fiber |
| CN107101743A (en) * | 2017-04-24 | 2017-08-29 | 安徽理工大学 | The monitoring system and method for comprehensive distributed prevention spontaneous combustion of coal gangue hill |
| CN107101743B (en) * | 2017-04-24 | 2019-07-19 | 安徽理工大学 | The monitoring system and method for comprehensive distributed prevention spontaneous combustion of coal gangue hill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20210505 |