CN104775849B - Colliery stope gas and coal spontaneous combustion coupling disaster monitoring system and monitoring method thereof - Google Patents
Colliery stope gas and coal spontaneous combustion coupling disaster monitoring system and monitoring method thereof Download PDFInfo
- Publication number
- CN104775849B CN104775849B CN201510126291.3A CN201510126291A CN104775849B CN 104775849 B CN104775849 B CN 104775849B CN 201510126291 A CN201510126291 A CN 201510126291A CN 104775849 B CN104775849 B CN 104775849B
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- monitoring
- base station
- disaster
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 57
- 230000008878 coupling Effects 0.000 title claims abstract description 40
- 238000010168 coupling process Methods 0.000 title claims abstract description 40
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 40
- 239000003245 coal Substances 0.000 title claims abstract description 35
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 25
- 230000002269 spontaneous effect Effects 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 55
- 239000010959 steel Substances 0.000 claims abstract description 55
- 238000005070 sampling Methods 0.000 claims abstract description 26
- 238000010276 construction Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 208000002925 dental caries Diseases 0.000 claims abstract 2
- 238000006073 displacement reaction Methods 0.000 claims description 12
- 238000005516 engineering process Methods 0.000 claims description 6
- 238000004880 explosion Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims 4
- 239000007789 gas Substances 0.000 abstract description 63
- 238000012512 characterization method Methods 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000005065 mining Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000001320 hippocampus Anatomy 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- Geometry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Evolutionary Computation (AREA)
- Computer Hardware Design (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The invention discloses a kind of colliery stope gas and coal spontaneous combustion coupling disaster monitoring system and monitoring method thereof, relate to combine and put goaf space gases observation and gas and the foundation of coal spontaneous combustion coupling disaster characterization model, it includes stope gas sample instrument and monitoring base station, wherein, movable sleeve pipe is connected together by upper and lower two seamless steel pipes and is formed, the outside of upper seamless steel pipe and lower seamless steel pipe is provided with a rectangular-shaped breach, article two, rectangular-shaped breach is point-blank, sampling steel pipe it is laid with in rectangular-shaped breach, sampling steel pipe is hollow-core construction, sampling steel pipe inside the most evenly spaced be divided into three seal cavitys, one group of monitoring line it is laid with in each sealing cavity.Stope gas sample instrument is placed in goaf by the present invention, rebuilds based on true data measured and obtains the distribution of coupling disaster deathtrap space multistory, with strong points, practicality is high, is effectively used for such coupling disaster spatial character on-the-spot and describes and orientation preventing and treating.
Description
Technical field
The invention belongs to coal mine gas and coal spontaneous combustion coupling disaster Prevention Technique field, be specifically related to a kind of colliery stope gas and coal
Spontaneous combustion coupling disaster monitoring system and monitoring method thereof.
Background technology
Along with the exploitation that China is intensive to energy high intensity, superficial part resource reduces day by day, and domestic and international mine subsequently enters deep money
Source mining phase.The mechanical characteristics of deep coal and rock is more complicated, and coal petrography crushing is big, provides good for spontaneous combustion of coal
Oxygen, accumulation of heat condition；Meanwhile, along with the increase of mining depth, pit mining gas flowing in coal layer and geothermal gradient are also anxious
Increase severely big, high methane content band and the existence of methane accumulation band and motion, be mine generation gas explosion, pyrophoricity accident important
Factor, and coal spontaneous combustion is gas explosion provides burning things which may cause a fire disaster condition, the coupling symbiotic of two kinds of disasters, becomes mine severe and great casualty and sends out
Raw universal pattern.
Determine that coupling disaster deathtrap is the key of this kind of diaster prevention and control, and coupling disaster has spatiality, owing to lacking effectively
Monitoring means its space multistory regularity of distribution is monitored, it is impossible to well guide field diaster prevention and control work.At present, also
The most directly monitoring goaf space gases and Temperature Distribution instrument and equipment, be the most all to carry out pipe laying sight on two crossheading directions
Survey, and produce simple change curve with Excel, it is impossible to from space multistory, show goaf coupling disaster distribution.
Summary of the invention
It is an object of the invention to provide a kind of colliery stope gas and coal spontaneous combustion coupling disaster monitoring system and monitoring method thereof, logical
Crossing this monitoring method can utilize Monitoring Data to obtain stope gas and coal spontaneous combustion with real-time collecting goaf space gases and temperature value
Coupling disaster space multistory distribution.
One of task of the present invention is to provide a kind of colliery stope gas and monitors system, its technical scheme bag with coal spontaneous combustion coupling disaster
Include:
A kind of colliery stope gas monitors system with coal spontaneous combustion coupling disaster, and it includes stope gas sample instrument and monitoring base station, institute
State stope gas sample instrument include movable sleeve pipe, the top tray being positioned at described cannula tip and be positioned at the subiculum of described casing shoe
Dish, described movable sleeve pipe is connected together by upper and lower two seamless steel pipes and is formed, described upper seamless steel pipe and under seamless steel
The outside of pipe is provided with a rectangular-shaped breach, and two rectangular-shaped breach point-blank, are laid in described rectangular-shaped breach
Having sampling steel pipe, described sampling steel pipe is hollow-core construction, is divided into the inside of described sampling steel pipe is the most evenly spaced
Three seal cavity, are laid with one group of monitoring line in described each sealing cavity, and often group monitoring line is all by being fixed together
Beam tube and thermometric line form；
The length of described lower tray is more than the length of top tray, and described movable inside pipe casing is provided with spring, described lower tray sets
Being equipped with pressure transducer, the top of described spring withstands in described top tray, and bottom withstands on described pressure transducer；
Described monitoring base station is divided into the base station one for monitoring pressure and for monitoring the base station two of gas sample and temperature, described pressure sensing
Device is connected to described base station one, and described monitoring line is connected to described base station two.
As a preferred version of the present invention, when top tray compression spring to greatest extent, above-mentioned sampling steel pipe and top tray
Between leave gap.
When stope gas sample instrument is by goaf overburden pressure, spring can compress by stress deformation, now pressure transducer
Pressure value being shown and pass to base station one, can not contacting, in order to avoid affecting experiment analysis results between top tray with sampling steel pipe.
As another preferred version of the present invention, the above-mentioned a length of 800mm of upper seamless steel pipe, internal diameter is 150mm, and wall thickness is
3mm；The lower a length of 800mm of seamless steel pipe, internal diameter is 144mm, and wall thickness is 3mm；The a diameter of 250mm of lower tray is thick
Degree is 15mm；The a diameter of 160mm of top tray, thickness is 15mm；Sampling diameter of steel tube is 33mm, and wall thickness is 2mm.
The length of above-mentioned upper seamless steel pipe, internal diameter, wall thickness and the length of lower seamless steel pipe, internal diameter, wall thickness etc. are particularly well-suited to
In coal seam thickness fully mechanized coal face in 6m, it is possible to be adjusted according to field requirement.
The two of the task of the present invention are to provide the monitoring method of above-mentioned monitoring system, and it comprises the following steps:
Step 1, work surface is divided into three, upper, middle and lower part, in the advance of the face to First Weighting Interval of Main L01/2 time,
In goaf, move towards to select on direction five goaf measuring points along work surface, stope gas sample instrument be placed in goaf,
Lay three measuring points in the air return way side of work surface, two measuring points are laid in the air intake crossheading side of work surface；
Step 2, monitoring, record measuring point pressure and displacement information by base station one, take gas sample by base station two and record measuring point temperature
Degree；
Step 3, work surface continue to advance L0Time, goaf top plate is in presses gap, and now ore deposit pressure is relatively small, is beneficial to survey
Point is arranged vertically, and takes the mode identical with step one to arrange five measuring points in same position；
Step 4, screen effective measuring point according to described stope gas sample instrument display pressure change numerical value, and by base station one, base
Stand two record pressure and displacement informations, and gather gas sample, the numerical value of point position sensor when gas collected in record in time；
Step 5, data step 4 gathered are averaged, and utilize mathematical analysis software and bi-cubic interpolation technology, it is thus achieved that flat
Face coupling disaster distribution；
Step 6, by Computerized three-dimensional reconstruction software, reconstruct obtains the space multistory scattergram of gas and coal spontaneous combustion coupling disaster.
Preferably, it is calculated that what step 5 midplane coupling disaster was distributed is obtained by following method:
In formula, SeFor coupling disaster areal area,For meeting the O that disaster occurs2Concentration areal area, STFor meeting the temperature that disaster occurs
Degree district,For flammable can quick-fried gas density areal area；Wherein, Value be 8%,
The Advantageous Effects that the present invention is brought:
The present invention changes tradition and measures the pattern in goaf by pipe laying after two crossheadings and hydraulic support, can be by the stope of design
Gas sample instrument needs directly to be placed in goaf according to layout such that it is able to real-time collecting goaf gas and temperature information；And
And stope gas sample instrument can the most directly measure space, goaf differing heights；Distribution field the most of the present invention
Method for reconstructing, it is possible to rebuild and obtain gas and spontaneous combustion of remaining coal calamity danger regional space solid distribution, more meets on-the-spot actual
Situation, thus the preventing and treating of such disaster in more preferable guide field operation, use and orient prevention and control measure more targetedly.The present invention
Simple, device reliability is strong, technique is relatively easy, and different coal working thickness is had certain adaptability, has wide
General practicality.
Easy construction of the present invention is easy, technique is relatively easy, is manually disposed sampling instrument to goaf by the gap of hydraulic support,
It is capable of the method observation layouted completely along work surface, coal seam thickness fully mechanized coal face in 6m is had well adapting to property.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings the present invention is done the clearest, complete explanation:
Fig. 1 is that the present invention monitors system structure schematic diagram；
Fig. 2 is the top view of lower seamless steel pipe；
Fig. 3 is lower seamless steel pipe rectangular-shaped barbed portion structural representation；
Fig. 4 is that monitoring system arranges schematic diagram at work surface；
Fig. 5 is the embodiment of the present invention 1 coupling disaster deathtrap superposition schematic diagram；
Fig. 6 is the embodiment of the present invention 1 coupling disaster danger solid distribution schematic diagram；
In figure, 1 base station one；2 base stations two；3 pressure transducer circuits；4 monitoring lines；5 top tray；6 subiculums
Dish；7 displacement transducers；8-samples steel pipe；9 springs；10 times seamless steel pipes；11 pressure transducers；12 rectangles
Shape breach；L0-work surface First Weighting Interval of Main, L-work surface moves towards width；13,14,15 is the air return way side of work surface
Three measuring points；16,17 is two measuring points of air intake crossheading side of work surface；18, work surface bottom, 19, in the middle part of work surface,
20, work surface top；21, work surface；22, goaf.
Detailed description of the invention
The invention provides a kind of colliery stope gas and coal spontaneous combustion coupling disaster monitoring system and monitoring method, for making the present invention's
Purpose, technical scheme and advantage are definitely, the most detailed to the present invention by the application example with certain ore deposit work surface below
Explanation.
As shown in Figure 1 to Figure 3, the present invention system of monitoring includes stope gas sample instrument and monitoring base station, can from Fig. 1
Going out, the main body of stope gas sample instrument is to be connected together formed by two upper seamless steel pipes varied in size and lower seamless steel pipe 10
Sleeve pipe, and the top of this sleeve pipe is installed on top tray 5, and bottom is lower tray 6, and goaf overburden pressure directly acts on
In top tray 5, it is internally provided with spring 9 at sleeve pipe, the highest strong spring, to adapt to the different pressures of overlying rock,
In lower tray, i.e. sleeve bottom is provided with pressure transducer 11, is connected to monitoring base station by pressure transducer circuit 3；
It is provided with rectangular-shaped breach 12 in the outside of upper seamless steel pipe and lower seamless steel pipe, sampling steel pipe 8 inside it, can be installed,
Sampling steel pipe 8 is internal is hollow-core construction, primarily to lay monitoring line therein, this sampling steel duct is along short transverse
Upper the most evenly spaced being provided with three groups of monitoring lines 4, often group monitoring line is all made up of the beam tube being fixed together and thermometric line,
Often group monitoring line is connected to monitoring base station, and in sampling, steel duct is evenly spaced is provided with three apertures, passes through for monitoring line,
First installing one group of monitoring line of sampling steel pipe top, it penetrates sampling steel pipe through the bottom of sampling steel pipe by aperture
Top, then penetrate the monitoring line of middle part and bottom successively, after installation, aperture resin material is sealed, formed
Sealing cavity, each aperture is all sealed by resin material and forms a sealing cavity, and beam tube and thermometric line are connected respectively to monitoring
In base station, the present invention preferred thermometric line is armored temperature measuring line, and beam tube is armouring polyvinyl bundle tube for mine.
Monitoring base station of the present invention is divided into two, is base station 1 and base station 22 respectively, base station 1 and pressure transducer 11 and position
Displacement sensor 7 connects, and is used for monitoring pressure and displacement information, and base station 22 is connected with beam tube and thermometric line, is used for monitoring stope
Goaf gas concentration, i.e. spontaneous combustion index gas and methane gas concentration.
The length of lower tray 6 is more than the length of top tray 5, it is ensured that the stability of gas sample instrument, it is ensured that stope gas sample
Instrument erectility is to ensure that the important guarantee measuring accuracy, and in use, upper and lower seamless steel pipe is slided by under the pressure effect of ore deposit,
Spring can compress, by the change of pressure sensor readings, it is judged that the erectility of instrument, if the pressure data obtained
Disappearance or appearance are abnormal, then judge that this measuring point is as invalid measuring point.
It is as follows that the present invention monitors the optimum technology parameter of each parts in system embodiment:
The a length of 800mm of upper seamless steel pipe, internal diameter is 150mm, and wall thickness is 3mm；
The lower a length of 800mm of seamless steel pipe, internal diameter is 144mm, and wall thickness is 3mm；
The lower a diameter of 250mm of steel pipe trays, the upper a diameter of 160mm of seamless steel pipe pallet, thickness is 15mm；
Sampling diameter of steel tube is 33mm, and wall thickness is 2mm.
The present invention is utilized to monitor system as follows with the monitoring method of coal spontaneous combustion coupling disaster system to goaf gas:
The first step, as shown in Figure 4, is divided in the middle part of work surface top 20, work surface 19 and work surface bottom 18 by work surface 21
Three parts, in the advance of the face to 1/2 First Weighting Interval of Main L0Time, move towards to select 5 on direction along work surface in goaf
Three measuring points 13,14,15 of the air return way side of goaf measuring point, respectively work surface and the two of the air intake crossheading side of work surface
Individual measuring point 16,17；Manually stope gas sample instrument is placed in goaf by hydraulic support gap, the three of air return way side
Individual measuring point 13,14,15, the adjacent spacing between measuring point is 1/8L, between two measuring points 16 and 17 of air intake crossheading side
Spacing be 1/4L；
Second step, all stope gas sample instrument are respectively connecting to crossheading base station by data wire and armouring beam tube, armored temperature measuring line,
Wherein base station 1 record measuring point pressure and displacement information, base station 22 takes gas and record measuring point temperature；
3rd step, continues to advance L at work surface0Time, goaf 22 top board is in presses gap, and now ore deposit pressure is relatively small, profit
It is arranged vertically in measuring point, takes identical mode to arrange row's measuring point and stope sampling instrument in same position, and be respectively connecting to suitable
Groove base station；
4th step, according to crossheading pressure change numerical value screen effective measuring point, and record pressure transducer numerical value, displacement transducer sink
Depreciation, typically can gather once for two days, runs into that face propulsion speed is relatively slow or during gas exceptions area, can gather once for one day,
Or within one day, gather twice；Gather gas sample air bag to collect, and the numerical value of point position sensor when gas collected in record in time,
Gas sample is taken in time to ground assay；
5th step, collects displacement data, gas sample data and temperature data by base station, both data is averaged, profit
By mathematical analysis software and bi-cubic interpolation technology, calculate according to the following formula:
In formula, SeFor coupling disaster areal area,For meeting the O that disaster occurs2Concentration areal area, STOccur for meeting disaster
Humidity province,For flammable can quick-fried gas density areal area；Wherein, Value be 8%, Obtain the distribution of plane coupling disaster；
6th step, by Computerized three-dimensional reconstruction software, reconstruct obtains the space multistory distribution of gas and coal spontaneous combustion coupling disaster.
Embodiment 1:
Below by with the application example of certain ore deposit work surface, the present invention is described in more detail.
Parameters of mining face is strike length 100m, average coal thickness 6.3m, mining height 3m, caving radio average out to 1:1.1, work
Face water component 12m, with air intake crossheading side as 0m, air return way side is 100m.
Being computed, work surface rear portion Residual coal in goaf thickness is 1.01m, and mixed zone thickness is 0.58m, therefore, gas sample
Instrument parameter may be designed as:
The a length of 800mm of upper seamless steel pipe, internal diameter is 150mm, and wall thickness is 3mm；
The lower a length of 800mm of seamless steel pipe, internal diameter is 144mm, and wall thickness is 3mm；
The lower a diameter of 250mm of steel pipe trays, the upper a diameter of 160mm of seamless steel pipe pallet, thickness is 15mm；
Sampling diameter of steel tube is 33mm, and wall thickness is 2mm.
Utilize the present invention to monitor system to be monitored and decision method, goaf gas and coal spontaneous combustion coupling disaster including walking as follows
Rapid:
Step 1, work surface is divided into top, middle part, bottom three part, after work surface first weighting, along work in goaf
Make the face side of trend and set up 5 goaf measuring points, manually stope gas sample instrument is placed in mined out by hydraulic support gap
In district, air return way surveys three measuring points, and spacing is 1/8 work surface strike length, i.e. 12.5m, two, air intake crossheading side measuring point,
Spacing is 1/4 work surface strike length, i.e. 25m；
Step 2, all stope gas sample instrument are respectively connecting to crossheading base station by data wire, beam tube, armored temperature measuring line, its
Middle base station one records measuring point pressure and displacement information, and base station two takes gas and record measuring point temperature；
When step 3, work surface continue to advance 12m, goaf is in presses gap, and this roof weighting is relatively small, takes phase
Same mode arranges row's measuring point and stope sampling instrument at same position, and is respectively connecting to base station；
Step 4, foundation gas sample instrument display pressure change numerical value screen effective measuring point, record effective measuring point pressure transducer number
Value also gathers gas sample with air bag, gives up invalid measuring point；Within two days, gather once, run into face propulsion speed compared with slow or gas is different
Often during district, can gather once for one day；When gas collected in record in time, measuring point is away from goaf distance, and gas sample is taken in time and chemically examined to ground
Analyze；
Step 5, the data of two row monitoring points are averaged, utilize MATLAB mathematical analysis software to combine bi-cubic interpolation technology,
Carry out goaf based on measured data gas distribution field and reconstruction of temperature field, in conjunction with the decision condition of coupling disaster, obtain three
Superposition deathtrap, as shown in Figure 5；
Step 6, Fig. 5 superposition deathtrap being projected to plane, obtain its plane distributing scope, method obtains three respectively according to this
The scope of coupling disaster deathtrap in individual short transverse, finally by gold space in the three-dimensionalreconstruction software combination gram of designed, designed
Interpolation technique, reconstruct obtains the space multistory distribution of gas and coal spontaneous combustion coupling disaster, can will rebuild space by the poster processing soft
Data are extracted, and obtain bulk and the positional information of disaster, and as shown in Figure 6, coupling disaster deathtrap height is 2m,
On tendency direction 10～70m, move towards on direction 70～100m.
Claims (4)
1. stope gas in colliery monitors a system with coal spontaneous combustion coupling disaster, and it includes stope gas sample instrument and monitoring base station, described
Stope gas sample instrument includes movable sleeve pipe, the top tray being positioned at described cannula tip and is positioned at the lower tray of described casing shoe,
It is characterized in that: described movable sleeve pipe is connected together by upper and lower two seamless steel pipes and formed, described upper seamless steel pipe and
The outside of lower seamless steel pipe is provided with a rectangular-shaped breach, and two rectangular-shaped breach are point-blank, described rectangular-shaped scarce
Being laid with sampling steel pipe in Kou, described sampling steel pipe is hollow-core construction, is spaced from bottom to top uniformly in the inside of described sampling steel pipe
Be divided into three seal cavitys, be laid with in each sealing cavity one group monitoring line, often group monitoring line be all by being fixed on one
The beam tube risen and thermometric line form；
The length of described lower tray is more than the length of top tray, and described movable inside pipe casing is provided with spring, described lower tray sets
Being equipped with pressure transducer, the top of described spring withstands in described top tray, and bottom withstands on described pressure transducer；
Described monitoring base station is divided into the base station one for monitoring pressure and displacement and for monitoring the base station two of gas sample and temperature, described pressure
Force transducer is connected to described base station one, and monitoring line is connected to described base station two；When top tray compression spring to greatest extent,
Gap is left between described sampling steel pipe and top tray.
Colliery the most according to claim 1 stope gas monitors system with coal spontaneous combustion coupling disaster, it is characterised in that: described upper nothing
The seam a length of 800mm of steel pipe, internal diameter is 150mm, and wall thickness is 3mm；The lower a length of 800mm of seamless steel pipe, internal diameter is 144
Mm, wall thickness is 3mm；The a diameter of 250mm of lower tray, thickness is 15mm；The a diameter of 160mm of top tray, thickness is 15mm；
Sampling diameter of steel tube is 33mm, and wall thickness is 2mm.
Colliery the most according to claim 1 and 2 stope gas monitors the monitoring method of system, its feature with coal spontaneous combustion coupling disaster
It is: comprise the following steps:
Step 1, work surface is divided into three, upper, middle and lower part, in the advance of the face to First Weighting Interval of Main L01/2 time,
Move towards to select on direction five measuring points along work surface in goaf, stope gas sample instrument is placed in by hydraulic support gap and adopts
In dead zone, laying three measuring points in the air return way side of work surface, two measuring points are laid in the air intake crossheading side of work surface；
Step 2, monitoring, record measuring point pressure and displacement information by base station one, take gas sample by base station two and record measuring point temperature；
Step 3, work surface continue to advance L0Time, goaf top plate is in presses gap, and now ore deposit pressure is relatively small, and beneficially measuring point hangs down
Straight layout, takes the mode identical with step one to arrange five measuring points in same position；
Step 4, screen effective measuring point according to described stope gas sample instrument display pressure change numerical value, and record pressure by base station one
And displacement, monitor gas sample and temperature by base station two, and gather gas sample, point position sensor when gas collected in record in time
Numerical value；
Step 5, data step 4 gathered are averaged, and utilize mathematical analysis software and bi-cubic interpolation technology, it is thus achieved that plane coupling
Conjunction disaster is distributed；
Step 6, by Computerized three-dimensional reconstruction software, reconstruct obtains the space multistory scattergram of gas and coal spontaneous combustion coupling disaster.
Colliery the most according to claim 3 stope gas monitors the monitoring method of system with coal spontaneous combustion coupling disaster, it is characterised in that:
It is calculated that what step 5 midplane coupling disaster was distributed is obtained by following method:
In formula, SeFor coupling disaster areal area,For meeting the O that disaster occurs2Concentration areal area, STFor meeting the temperature that disaster occurs
Degree district,For flammable can quick-fried gas density areal area；Wherein, Value be 8%, The O that disaster occurs is met for what actual measurement obtained2Concentration limit,Obtain for actual measurement
CH4Concentration explosion limit,The CH obtained for actual measurement4Concentration,The CO concentration obtained for actual measurement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510126291.3A CN104775849B (en) | 2015-03-23 | 2015-03-23 | Colliery stope gas and coal spontaneous combustion coupling disaster monitoring system and monitoring method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510126291.3A CN104775849B (en) | 2015-03-23 | 2015-03-23 | Colliery stope gas and coal spontaneous combustion coupling disaster monitoring system and monitoring method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104775849A CN104775849A (en) | 2015-07-15 |
| CN104775849B true CN104775849B (en) | 2016-09-21 |
Family
ID=53617571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510126291.3A Expired - Fee Related CN104775849B (en) | 2015-03-23 | 2015-03-23 | Colliery stope gas and coal spontaneous combustion coupling disaster monitoring system and monitoring method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104775849B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319328A (en) * | 2015-11-26 | 2016-02-10 | 华北科技学院 | Device and method for comprehensively and continuously monitoring goaf disaster indexes |
| CN105842281A (en) * | 2016-04-28 | 2016-08-10 | 煤炭科学技术研究院有限公司 | Analog simulation test device for temperature field distribution rule in coal mine goaf |
| CN109145440B (en) * | 2018-08-21 | 2023-04-18 | 天地（常州）自动化股份有限公司 | Judgment method for multi-field coupling danger area of gas and coal spontaneous combustion in goaf |
| CN114460260A (en) * | 2021-12-29 | 2022-05-10 | 淮北矿业股份有限公司 | Method for monitoring spontaneous combustion danger area of residual coal in gob of fully mechanized caving mining face |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5141304B2 (en) * | 2008-03-07 | 2013-02-13 | 凸版印刷株式会社 | Gas concentration distribution measuring device |
| CN201391317Y (en) * | 2009-02-25 | 2010-01-27 | 西安森兰科贸有限责任公司 | Gas detecting device of coal mine actual mining mined out space |
| CN103267601B (en) * | 2013-05-07 | 2014-10-08 | 山东科技大学 | Goaf overlying stratum movement stability monitoring system and stability monitoring distinguishing method |
| CN203337586U (en) * | 2013-07-24 | 2013-12-11 | 大同煤矿集团有限责任公司 | Experiment table for natural coupling of gas and coal |
| CN103412095B (en) * | 2013-08-26 | 2015-02-11 | 重庆大学 | Multi-parameter device for monitoring coal and gas outburst under condition of multi-field coupling |
| CN204552819U (en) * | 2015-03-23 | 2015-08-12 | 山东科技大学 | Colliery stope gas and coal spontaneous combustion coupling disaster monitoring system |
-
2015
- 2015-03-23 CN CN201510126291.3A patent/CN104775849B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104775849A (en) | 2015-07-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Dai et al. | Deformation forecasting and stability analysis of large-scale underground powerhouse caverns from microseismic monitoring | |
| Meng et al. | Experimental study on the prediction of rockburst hazards induced by dynamic structural plane shearing in deeply buried hard rock tunnels | |
| Cheng et al. | A zoning model for coal mining-induced strata movement based on microseismic monitoring | |
| CN109655575A (en) | It is a kind of to simulate spontaneous combustion in goaf and three experimental systems and method with distribution | |
| CN104775849B (en) | Colliery stope gas and coal spontaneous combustion coupling disaster monitoring system and monitoring method thereof | |
| Cao et al. | Case study of seismic hazard assessment in underground coal mining using passive tomography | |
| Zhang et al. | Prediction of rockbursts in a typical island working face of a coal mine through microseismic monitoring technology | |
| Ma et al. | Stability analysis and reinforcement evaluation of high-steep rock slope by microseismic monitoring | |
| Zhou et al. | Test system for the visualization of dynamic disasters and its application to coal and gas outburst | |
| Xu et al. | Comprehensive evaluation of excavation-damaged zones in the deep underground caverns of the Houziyan hydropower station, Southwest China | |
| CN103114827B (en) | Multi-scenarios method coal bed gas extraction simulation experiment method | |
| CN104390537A (en) | Method for controlling damage of slope pre-splitting blasting digging based on blast vibration test | |
| CN106248672B (en) | The recognition methods of rock crack mode of extension and system in a kind of live hole based on DIC technology | |
| Li et al. | Rockburst occurrences and microseismicity in a longwall panel experiencing frequent rockbursts | |
| CN102606146A (en) | Salt cavern model test method for simulating multi-interbedded salt rock geological conditions | |
| CN104653226A (en) | Stress-gradient-based method for dividing coal impact ground pressure danger area | |
| Zhang et al. | Experimental study on intensity and energy evolution of deep coal and gas outburst | |
| CN101021570A (en) | Non-contact mine ground pressure observing and estimating method | |
| Liu et al. | Activation characteristics analysis on concealed fault in the excavating coal roadway based on microseismic monitoring technique | |
| CN109345140B (en) | Auxiliary method for early warning of water inrush disaster of coal mine | |
| CN107328551B (en) | Fully mechanized working face heterogeneous goaf flow field simulation experiment device | |
| CN104834012A (en) | Electromagnetic radiation monitoring early warning method of mine roof water inrush | |
| Hu et al. | Numerical simulations of the void distribution characteristics of crushed rock masses in mine gobs | |
| CN208075790U (en) | A kind of Novel tunnel convergent deformation continuous measuring device | |
| CN109655494A (en) | A kind of mining overburden solid-liquid coupling three dimensional lossless monitoring system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160921 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |