CN107328551A - Fully mechanized coal face inhomogeneous goaf flow field simulation experimental provision - Google Patents
Fully mechanized coal face inhomogeneous goaf flow field simulation experimental provision Download PDFInfo
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- CN107328551A CN107328551A CN201710740937.6A CN201710740937A CN107328551A CN 107328551 A CN107328551 A CN 107328551A CN 201710740937 A CN201710740937 A CN 201710740937A CN 107328551 A CN107328551 A CN 107328551A
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/08—Aerodynamic models
Abstract
The present invention relates to fully mechanized coal face inhomogeneous goaf flow field simulation experimental provision, technical scheme is, being horizontally disposed with casing has the track that casing is stretched out along coaster gateway, coaster is provided with track, the jack for driving it to be slided along track is provided with coaster, the similar rock stratum in bottom is filled with casing below side shield lower surface, working face baffle plate, it is higher than the coal seam of cover top surface between side shield and cabinet wall filled with top surface, the coal seam of the raised area extends to cover top surface and covers cover top surface, the similar rock stratum in top is filled with casing above coal seam, top plate, working face baffle plate, side shield rock stratum similar with bottom surrounds simulation coal seam space jointly, the present invention simulates coal mining process by push-and-pull coaster, overlying coal rock layer is after coaster support is lost, destruction is deformed by deadweight until inbreak, whole process is natural caving, the similarity of the inhomogeneous goaf of formation and scene is greatly improved.
Description
Technical field
The present invention relates to flow field in goaf analogue experiment installation, particularly a kind of fully mechanized coal face inhomogeneous goaf flow field
Analogue experiment installation.
Background technology
China is coal spontaneous combustion more serious country, and the resource and environmental loss that annual coal spontaneous combustion is caused are difficult to estimate, by
In the reason such as the rate of extraction is low, fltting speed is slow, comprehensive coal-face of putting is more easy to coal spontaneous combustion problem occur.According to statistics, more than 95%
Coal spontaneous combustion occur inside the goaf that personnel can not look at straight or reach, join so as to be difficult to accurately to obtain coal spontaneous combustion burning things which may cause a fire disaster physics and chemistry
Number, causes extinguishing effect not good, therefore, it is necessary to set up certain technical method research fully mechanized coal face goaf coal spontaneous combustion
Rule is distributed and spread, the coal spontaneous combustion fire extinguishing of live goaf is instructed.
In recent years, scholar is main mined out to fully mechanized coal face in terms of numerical simulation and physical analogy two under lab
Area's coal spontaneous combustion problem is studied.There is more estimate in the selection of parameters for numerical simulation, so that analog result is inclined
From reality, it is necessary to be modified by physical model or field data.Because field data is restricted by many factors, acquisition is difficult
And there is error, therefore, build goaf physical model and carry out side of the physical analogy as the coal spontaneous combustion of relatively reliable solution goaf
Method.At present, existing goaf physical model is mostly to fill to form goaf with rubble, broken coal and other artificial materials, these
Filler top does not load overlying rock formation pressure, and the goaf physical model that these hand packings are formed is loaded with overlying
After pressure, result of study can not coincide with live reality well.
In order to form the goaf physical model high with live similarity, the patent that inventor applied and authorized in 2014
Number be ZL201410453668.1 " comprehensive to put/adopt coal wall flow field in goaf simulation test device and method ", after
The research of phase finds that the device has problems with：1. it is not high with live similarity.For example, during hydraulic lifting arm declines
Overlying coal rock layer can together decline with sliding block, it is difficult to form the high inhomogeneous goaf of similarity；Sliding block even width is set, and is made
Obtain the progress mined every time equal；The comprehensive plenum height for putting coal-face in scene is the plenum height in support height, device
For support and caving coal height；The face goaf direction that worked in device does not have a baffle plate, and overlying coal rock layer, which emits to fall behind to exist, blocks work
The situation in face.2. hydraulic lifting arm is more, complex management, easily damages, it is difficult to change.For example, a length of 3800mm of this device, is removed
Rib length 400mm is protected at two ends, according to each simulation coal mining 50mm, then 68 row's hydraulic lifting arms are needed, by each sliding block
There are two hydraulic lifting arms below, then need 136 hydraulic lifting arms；Each hydraulic lifting arm needs oil pipe or tracheae, manages
It is complicated；There is inferior rate in hydraulic stem, one of to damage, and experiment can be influenceed to be normally carried out；Consider lower safety and size,
The electronic components such as hydraulic lifting arm, thermocouple are difficult to change after damaging.3. device control is complicated, and cost is high, prior art condition
Under be difficult realize.For example, needing two hydraulic lifting arm synchronism stabilities to decline during the decline of 68 row's sliding blocks so that installation cost is significantly
Degree increases；The frictional force between sliding block can be increased when there is inclination and debris between sliding block, so that it is specified to prevent sliding block from dropping to
Position；Sliding block is metal material, and device does not consider sliding block bottom heat dissipation problem；During sliding block declines, stope flow field can be disturbed,
Influence the accuracy of measurement data；Because the live progress of coal mining daily difference is, it is necessary to narrow sliding block, this becomes hydraulic lifting arm
Obtain more, and in the market is not readily available suitable hydraulic lifting arm.Therefore, it improves and innovated imperative.
The content of the invention
For above-mentioned situation, to overcome the defect of prior art, the purpose of the present invention is just to provide a kind of fully mechanized coal face
Inhomogeneous goaf flow field simulation experimental provision, can effectively solve to mine using coaster pull simulation working face, by overlying coal
Rock stratum deadweight natural caving formation inhomogeneous goaf, it is higher with live similarity, and experimentation is reliably easy to operate, acquisition
The problem of experimental data confidence level is higher.
The technical scheme that the present invention is solved is：
A kind of fully mechanized coal face inhomogeneous goaf flow field simulation experimental provision, the analogue experiment installation includes casing, case
Body is to be horizontally disposed with to have along coaster in the coaster gateway for being provided with inside and outside insertion on hollow structure, the front panel of casing, casing
The track of casing is stretched out in gateway, be provided with track be provided with coaster, coaster for drive its along track slide it is very heavy
Horizontal top plate is provided with the top of top, coaster, top plate front end is provided with the working face baffle plate extended downwardly from, and top plate both sides are provided with
The similar rock stratum in bottom, working face baffle plate, side are filled with casing below the side shield vertically extended downwards, side shield lower surface
It is higher than the coal seam of cover top surface between baffle plate and cabinet wall filled with top surface, the coal seam of the raised area extends to top plate upper table
Face simultaneously covers cover top surface, and the similar rock stratum in top, top plate, working face baffle plate, side shield are filled with the casing above coal seam
Rock stratum similar with bottom surrounds simulation coal seam space jointly；
The bottom being provided with the bottom plate of casing along coaster glide direction above multigroup uniform bottoming hole, bottoming hole is similar
The heating passage being connected with simulation coal seam space is provided with rock stratum, heating passage is built with heating tube, and bottoming hole surrounding exists
It is provided with the similar rock stratum in bottom above uniform multiple pumping thermometer holes, pumping thermometer hole and is provided with and simulation coal on bottom plate
Thermocouple and exhaust tube are respectively arranged with the pumping thermometric passage that sheaf space is connected, pumping thermometric passage；
Longitudinally arranged intake and return aircourse, working face gear are respectively arranged with the side shield medial surface of both sides
The roadway workface being arranged along the horizontal, the two ends phase of intake and return aircourse respectively with roadway workface are provided with the inside of plate
Connection, constitutes U-shaped aeration structure, working face baffle plate bottom is evenly equipped with multiple holes of leaking out being connected with roadway workface, air intake
The simulation that tunnel, return aircourse, roadway workface and hole of leaking out constitute goaf is leaked out system.
Pumping thermometer hole, the output end and Temperature sampler of thermocouple are stretched out in described thermocouple and the lower end of exhaust tube
It is connected, the lower end of exhaust tube is connected with vavuum pump, sealing is provided between thermocouple, exhaust tube and pumping thermometer hole.
Covered with the girdle that 5mm is thick on the similar rock stratum top surface in described bottom.
The method have the benefit that：
1st, according to live coal rock layer situation, similar coal rock layer is laid on casing and coaster, plant bulk design can be met
Geometric similarity, coal mining process is simulated by push-and-pull coaster, and coaster moving parameter can be regulated and controled according to actual conditions, overlying coal petrography
Layer is deformed destruction until inbreak after coaster support is lost by deadweight, and whole process is natural caving, formation it is non-
The similarity in matter goaf and scene is high；
2nd, U-shaped ventilation shaft is laid in coaster bottom, realizes exhaust ventilation using air blower, device meets dynamic similarity
And kinematic similitude, in roadway workface goaf direction, uniform multigroup casement that leaks out is intended leaking out, stope space ventilator and leak out with
Live similarity is high；
3rd, using bottom half arrangement heating tube heating float coal spontaneous combustion of simulated coal high temperature dot, while goaf air leaking is simulated,
Float coal heats up under anaerobic environment to be produced gas heat and migration is spread inside inhomogeneous goaf, and goaf internal gas spreads fortune
Move environment and live similarity is high, the lower goaf gas thermal field changing rule obtained in basis preferably can instruct scene to adopt herein
The identification and prevention and control of dead zone coal spontaneous combustion burning things which may cause a fire disaster；
4th, by the use of bottom half preformed hole as gas source of release, other bottom preformed holes can be obtained as aspirating hole
Gas Concentration Distribution Rules in Goaf under different gas source of releases and ventilation condition, has to preventing and treating goaf gas disaster and refers to
Lead meaning；
5th, device rapidoprint is easily chosen, and cost is low, and structure is reliably easy to operate, and heating tube, thermocouple and exhaust tube are the bottom of from
Plate is arranged, and is easily changed after breaking-up.Generally, device meets geometric similarity, dynamic similarity, kinematic similitude, obtained reality
Test credible result degree high, goaf coal spontaneous combustion burning things which may cause a fire disaster physical and chemical parameter and goaf gas concentration distribution rule are obtained available for accurate
Rule, experimental result can preferably instruct the positioning and goaf gas diaster prevention and control of live goaf coal spontaneous combustion burning things which may cause a fire disaster.
Brief description of the drawings
Fig. 1 is the sectional front view of experimental provision of the present invention.
Fig. 2 is the sectional front view (being not filled by similar rock stratum) of experimental provision of the present invention.
Fig. 3 is the top view (be not filled by similar rock stratum, do not install coaster) of experimental provision of the present invention.
Fig. 4 is the cross sectional side view of experimental provision of the present invention.
Fig. 5 is the cross sectional side view (being not filled by similar rock stratum) of experimental provision of the present invention.
Fig. 6 is the partial enlarged drawing at experimental provision sectional front view working face baffle plate of the present invention.
Fig. 7 is the scheme of installation of heating tube of the present invention.
Fig. 8 is the scheme of installation of thermocouple of the present invention and exhaust tube.
Fig. 9 is the structural representation of working face baffle plate of the present invention.
Figure 10 is the structural representation of coaster of the present invention.
Figure 11 is the structural representation of U-shaped ventilating system of the invention.
Figure 12-14 is erecting dense individual props process diagrammatic cross-section in present invention simulation exploitation
Embodiment
The embodiment of the present invention is described in further detail below in conjunction with accompanying drawing.
Provided by Fig. 1 to Figure 14：
A kind of fully mechanized coal face inhomogeneous goaf flow field simulation experimental provision, the analogue experiment installation includes casing 1, case
Body 1 is to be horizontally disposed with to have in the coaster gateway 29 for being provided with inside and outside insertion on hollow structure, the front panel 11a of casing, casing
Stretch out to be provided with coaster 2, coaster 2 on the track 7 of casing, track 7 along coaster gateway 29 and be provided with for driving it along rail
The jack 14 that road is slided, the top of coaster 2 is provided with horizontal top plate 10, and the front end of top plate 10 is provided with the working face extended downwardly from
Baffle plate 19, the both sides of top plate 10 are provided with the casing below the side shield 30 vertically extended downwards, the lower surface of side shield 30 Nei and filled
There is the similar rock stratum 3a in bottom, be higher than the coal of cover top surface between working face baffle plate, side shield and cabinet wall filled with top surface
Layer 4, the coal seam of the raised area extends to cover top surface and covers cover top surface, filled with top in the casing of the top of coal seam 4
The similar rock stratum 3b in portion, top plate, working face baffle plate, side shield rock stratum similar with bottom surrounds simulation coal seam space 31 jointly；
It is provided with the bottom plate 6 of casing 1 along coaster glide direction above multigroup uniform bottoming hole 20a, bottoming hole 20a
The heating passage 32a being connected with simulation coal seam space 31 is provided with the similar rock stratum in bottom, passage 32a is built with heating for heating
Pipe 25, bottoming hole 20a surroundings are provided with the bottom above uniform multiple pumping thermometer hole 20b, pumping thermometer hole 20b on bottom plate
It is provided with the pumping thermometric passage 32b being connected with simulation coal seam space 31, pumping thermometric passage 32b and divides in the similar rock stratum in portion
Thermocouple 22 and exhaust tube 23 are not provided with；
Longitudinally arranged intake 9a and return aircourse 9b, work are respectively arranged with the medial surface of side shield 30 of both sides
Make the inner side of face baffle plate 19 and be provided with the roadway workface 18 being arranged along the horizontal, intake 9a and return aircourse 9b respectively with work
The two ends in face tunnel 18 are connected, and constitute U-shaped aeration structure, and the bottom of working face baffle plate 19 is evenly equipped with multiple with roadway workface phase
The hole 21 of leaking out of connection, the simulation that intake, return aircourse, roadway workface and hole of leaking out constitute goaf is leaked out system；
The direction that the glide direction of coaster is set on longitudinal direction, horizontal plane perpendicular to coaster glide direction is set to transverse direction.
To ensure using effect, pumping thermometer hole 20b, thermoelectricity are stretched out in described thermocouple 22 and the lower end of exhaust tube 23
Even output end is connected with Temperature sampler, and the lower end of exhaust tube 23 is connected with vavuum pump, and thermocouple 22, exhaust tube are surveyed with pumping
Sealing 24 is provided between warm hole.Described pumping thermometric passage 32b can be arranged using steel pipe 26.The inwall of steel pipe 26 and thermoelectricity
Sealing 24 is provided between even, exhaust tube.
Described coaster 2 includes fixing muscle 33, the supporting plate 34 being welded in fixing muscle, is horizontally installed in supporting plate
Rotating shaft 35 and the pulley 8 being arranged on by bearing in rotating shaft, top plate 10 are horizontally set at the top of fixing muscle and supporting plate.
Described top plate 10 is linked together with working face baffle plate 19 by connector 27.
Described casing 1 be by the alternate setting of level bottom plate 6 and cover plate 12 and be vertically arranged in bottom plate 6 and top plate 12
Between front panel 11a, rear board 11b and arranged on left and right sides the cuboid hollow structures that constitute of side plate 11c, set on casing 1
There is reinforcement 17, reinforcement 17 can be made using channel-section steel, and front panel 11a, rear board 11b and side plate 11c can use transparent Asia
Gram force plate makes, situation that can clearly in inspection box body.
The cross-brace 16 corresponding with jack, the base of jack 14 are provided with the front panel of described casing 1
It is fixed together with the vertical baffle 13 of coaster front end, the piston rod of jack is vertical with the surface of cross-brace 16 just right, it is horizontal
To the lumps of wood 15 being provided between support 16 and the piston rod of jack for extending support distances.
Described casing 1 and track 7 is arranged on pillar 5.
Every group of bottoming hole 20a has along bottom plate laterally uniform 3.
Covered with the girdle that 5mm is thick on the similar rock stratum 3a top surfaces in described bottom.
A kind of fully mechanized coal face inhomogeneous goaf flow field simulation experimental method, comprises the following steps：
A, installation analogue experiment installation
Described analogue experiment installation includes casing 1, and casing 1 is in being provided with hollow structure, the front panel 11a of casing
It is horizontally disposed with to have in the coaster gateway 29 of outer insertion, casing and is set on the track 7 that casing is stretched out along coaster gateway 29, track 7
The jack 14 being provided with coaster 2, coaster 2 for driving it to be slided along track is equipped with, the top of coaster 2 is provided with horizontal top
Plate 10, the front end of top plate 10 is provided with the working face baffle plate 19 extended downwardly from, and the both sides of top plate 10 are provided with the side vertically extended downwards
The similar rock stratum 3a in bottom, working face baffle plate, side shield and casing are filled with casing below baffle plate 30, the lower surface of side shield 30
It is higher than the coal seam 4 of cover top surface between inwall filled with top surface, the coal seam of the raised area extends to cover top surface and covered
The similar rock stratum 3b in top, top plate, working face baffle plate, side shield and bottom are filled with cover top surface, the casing of the top of coal seam 4
Similar rock stratum surrounds simulation coal seam space 31 jointly；
Longitudinally arranged intake 9a and return aircourse 9b, work are respectively arranged with the medial surface of side shield 30 of both sides
Make the inner side of face baffle plate 19 and be provided with the roadway workface 18 being arranged along the horizontal, intake 9a and return aircourse 9b respectively with work
The two ends in face tunnel 18 are connected, and constitute U-shaped aeration structure, and the bottom of working face baffle plate 19 is evenly equipped with multiple with roadway workface phase
The hole 21 of leaking out of connection, the simulation that intake, return aircourse, roadway workface and hole of leaking out constitute goaf is leaked out system,
Return aircourse 9b air outlet is connected with air blower；
Coaster glide direction (longitudinal direction) is provided with multigroup uniform bottoming hole 20a, bottoming hole 20a on the bottom plate 6 of casing 1
The heating passage 32a being connected with simulation coal seam space 31 is provided with the similar rock stratum in bottom of top, heating passage 32a is built-in
There is heating tube 25, bottoming hole 20a surroundings are provided with bottom plate on uniform multiple pumping thermometer hole 20b, pumping thermometer hole 20b
The pumping thermometric passage 32b being connected with simulation coal seam space 31 is provided with the similar rock stratum in bottom of side, thermometric passage is evacuated
Thermocouple 22 and exhaust tube 23 are respectively arranged with 32b；
Pumping thermometer hole 20b, output end and the temperature of thermocouple are stretched out in described thermocouple 22 and the lower end of exhaust tube 23
Spend collector to be connected, the lower end of exhaust tube 23 is connected with vavuum pump, be provided between thermocouple 22, exhaust tube and pumping thermometer hole
Sealing 24；
Described coal seam is the dry scattered coal of field test working face mining, and described similar rock stratum is sand, land plaster, carbon
Sour calcium powder, borax and water carry out laying by different proportion mixing and formed.
During installation, coaster is pulled out from casing first, heating tube, thermocouple, exhaust tube, heat are arranged on box bottom
Galvanic couple is arranged in a hole with exhaust tube together with water pipe precaution, using being screwed；Coaster is shifted onto in casing so that plus
Coaster, is pulled out casing, the bottom of at by heat pipe, thermocouple, lower surface of the upper end less than working face baffle plate and side shield of exhaust tube
The similar rock stratum 3a in bottom is laid on plate, and in coal seam thick similar rock stratum upper berth 5mm, coaster is moved back and forth in casing, made
Obtain the thick coal seams of similar rock stratum top 5mm and the lower surface of working face baffle plate and side shield to be in close contact, coaster is pushed into case
Body innermost end, then fills the coal seam 4 that top surface is higher than cover top surface between working face baffle plate, side shield and cabinet wall,
The coal seam of the raised area extends to cover top surface and covers cover top surface, then on coal seam filling at the top of similar rock stratum 3b；
B, simulation exploitation
According to design step pitch and design interval time, by jack movable block, the goaf of simulation is formed, is opened simultaneously
Air blower is opened, it is distinguished and admirable to enter from intake 9a, discharged by roadway workface 18 from return aircourse 9b, by working face lane
During road, it is distinguished and admirable by hole 21 of leaking out to goaf air leaking, form goaf air leaking flow field；With the movement of coaster, top is similar
Rock stratum loses the support of top plate, and the effect of ore deposit pressure is incrementally increased, and when reaching the limit of rupture of the similar rock stratum in top, that is, is deformed
Destruction, until being caving, so as to simulate the scene of erecting dense individual props, the similar rock stratum in top starts to emit backwardness, opens under inbreak region
The heating tube of side, is warming up to 200-300 DEG C, while goaf real time temperature is monitored by thermocouple, and separated in time is (such as
Interval 5-10 minutes) air suction sampling is carried out to inbreak region by exhaust tube, and number and remark information, the gas sample of collection is transported
Gas componant is chemically examined to use for laboratory gas chromatograph, O is analyzed2、N2、CO、CO2、CH4、C2H6、C2H4、C3H8、C2H2Deng gas
Volume fraction, you can complete the acquisition of goaf temperature and gas experiment data.The temperature monitoring information of acquisition and pumping are analyzed
Data summarization is obtained to together, you can obtain the changing rule of goaf coal spontaneous combustion burning things which may cause a fire disaster physical and chemical parameter, disclose heterogeneous goaf
During goaf gas thermal field changing rule, the result of analog simulation is for recognizing spontaneous combustion state, the gaseous product in goaf
And migration rule and preventing and treating goaf coal spontaneous combustion catastrophe are significant.
If the changing rule in goaf gas flow field under the conditions of Cold simulating test is studied, using preformed hole on box bottom
As gas source of release, other preformed holes carry out pumping analytical test as exhaust tube, so as to obtain different gas releases
The flow field in goaf mash gas concentration regularity of distribution under source and ventilation condition.
It is well known by those skilled in the art that for analog simulation experimental device, the raising experiment that seeks to of most critical is filled
The similarity with scene is put, it is of the invention according to live coal rock layer situation so that the experimental result made just has a reference significance,
Similar coal rock layer is laid on casing and coaster, plant bulk design meets geometric similarity, coal mining process is simulated by push-and-pull coaster,
Coaster moving parameter can be regulated and controled according to actual conditions, and overlying coal rock layer produces change after coaster support is lost by deadweight
Shape destruction is until inbreak, whole process is natural caving, and the similarity of the inhomogeneous goaf and scene of formation is greatly improved；
U-shaped ventilation shaft is laid in coaster bottom, realizes exhaust ventilation using air blower, device meets dynamic similarity and kinematic similitude,
In roadway workface goaf direction, uniform multigroup casement that leaks out is intended leaking out, and stope space ventilator and leaks out and live similarity
It is high；Using bottom half arrangement heating tube heating float coal spontaneous combustion of simulated coal high temperature dot, while simulating goaf air leaking, float coal is lacking
Heating produces gas heat and simultaneously spreads migration inside inhomogeneous goaf under oxygen environment, goaf internal gas spread migration environment and
Live similarity is high, and the lower goaf gas thermal field changing rule obtained in basis can preferably instruct live goaf coal certainly herein
Fire the identification and prevention and control of burning things which may cause a fire disaster；By the use of bottom half preformed hole as gas source of release, other bottom preformed holes as aspirating hole,
The Gas Concentration Distribution Rules in Goaf under different gas source of releases and ventilation condition can be obtained, to preventing and treating goaf gas calamity
Evil has directive significance；Device rapidoprint is easily chosen, and cost is low, and structure is reliably easy to operate, heating tube, thermocouple and exhaust tube
It is arranged, is easily changed after breaking-up from bottom plate.Generally, device meets geometric similarity, dynamic similarity, kinematic similitude, obtains
Reliable experiment result degree it is high, obtain goaf coal spontaneous combustion burning things which may cause a fire disaster physical and chemical parameter and goaf gas concentration distribution available for accurate
Rule, experimental result can preferably instruct the positioning and goaf gas diaster prevention and control of live goaf coal spontaneous combustion burning things which may cause a fire disaster, be
Innovation on flow field in goaf analogue experiment installation and method, there is good social and economic benefit.
Claims (8)
1. a kind of fully mechanized coal face inhomogeneous goaf flow field simulation experimental provision, it is characterised in that the analogue experiment installation bag
Casing (1) is included, casing (1) is the coaster gateway that inside and outside insertion is provided with hollow structure, the front panel (11a) of casing
(29), being horizontally disposed with casing has the track (7) that casing is stretched out along coaster gateway (29), and track is provided with coaster on (7)
(2), it is provided with coaster (2) at the top of the jack (14) for driving it to be slided along track, coaster (2) and is provided with horizontal top
Plate (10), top plate (10) front end is provided with the working face baffle plate (19) extended downwardly from, and top plate (10) both sides are provided with vertical downwards
The similar rock stratum in bottom (3a), working face gear are filled with casing below the side shield (30) of stretching, side shield (30) lower surface
It is higher than the coal seam (4) of cover top surface between plate, side shield and cabinet wall filled with top surface, the coal seam of the raised area is extended to
Cover top surface simultaneously covers cover top surface, and the similar rock stratum in top (3b), top plate, work are filled with the casing above coal seam (4)
Make face baffle plate, side shield rock stratum similar with bottom and surround simulation coal seam space (31) jointly；
It is provided with the bottom plate (6) of casing (1) along coaster glide direction on multigroup uniform bottoming hole (20a), bottoming hole (20a)
The heating passage (32a) being connected with simulation coal seam space (31), heating passage (32a) are provided with the similar rock stratum in bottom of side
Built with heating tube (25), bottoming hole (20a) surrounding is provided with uniform multiple pumping thermometer holes (20b) on bottom plate, pumping
The pumping thermometric passage being connected with simulation coal seam space (31) is provided with the similar rock stratum in bottom above thermometer hole (20b)
Thermocouple (22) and exhaust tube (23) are respectively arranged with (32b), pumping thermometric passage (32b)；
Longitudinally arranged intake (9a) and return aircourse (9b) is respectively arranged with side shield (30) medial surface of both sides,
It is provided with the roadway workface (18) being arranged along the horizontal on the inside of working face baffle plate (19), intake (9a) and return aircourse (9b)
The two ends with roadway workface (18) are connected respectively, constitute U-shaped aeration structure, working face baffle plate (19) bottom is evenly equipped with multiple
The hole of leaking out (21) being connected with roadway workface, intake, return aircourse, roadway workface and hole of leaking out constitute goaf
Simulation leak out system.
2. flow field simulation experimental provision in fully mechanized coal face inhomogeneous goaf according to claim 1, it is characterised in that institute
Pumping thermometer hole (20b) is stretched out in the thermocouple (22) stated and the lower end of exhaust tube (23), and output end and the temperature of thermocouple are adopted
Storage is connected, and the lower end of exhaust tube (23) is connected with vavuum pump, and sealing is provided between thermocouple, exhaust tube and pumping thermometer hole
(24)。
3. flow field simulation experimental provision in fully mechanized coal face inhomogeneous goaf according to claim 1, it is characterised in that institute
The coaster (2) stated includes fixing muscle (33), the supporting plate (34) being welded in fixing muscle, the rotating shaft being horizontally installed in supporting plate
(35) pulley (8) in rotating shaft and by bearing is arranged on, top plate (10) is horizontally set at the top of fixing muscle and supporting plate.
4. flow field simulation experimental provision in fully mechanized coal face inhomogeneous goaf according to claim 1, it is characterised in that institute
The casing (1) stated be by the alternate setting of level bottom plate (6) and cover plate (12) and be vertically arranged in bottom plate (6) and top plate (12)
Between front panel (11a), the cuboid hollow structure that constitutes of the side plate (11c) of rear board (11b) and arranged on left and right sides.
5. flow field simulation experimental provision in fully mechanized coal face inhomogeneous goaf according to claim 1, it is characterised in that institute
The cross-brace (16) corresponding with jack, the base and cunning of jack (14) are provided with the front panel for the casing (1) stated
The vertical baffle (13) at Chinese herbaceous peony end is fixed together, and the piston rod of jack is vertical with the surface of cross-brace (16) just right, horizontal
The lumps of wood (15) for extending support distances is provided between the piston rod of jack to support (16).
6. flow field simulation experimental provision in fully mechanized coal face inhomogeneous goaf according to claim 1, it is characterised in that institute
The casing (1) and track (7) stated are arranged on pillar (5).
7. flow field simulation experimental provision in fully mechanized coal face inhomogeneous goaf according to claim 1, it is characterised in that every
Group bottoming hole (20a) has along bottom plate laterally uniform 3.
8. flow field simulation experimental provision in fully mechanized coal face inhomogeneous goaf according to claim 1, it is characterised in that institute
Covered with the girdle that 5mm is thick on the similar rock stratum in bottom (3a) top surface stated.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088978A (en) * | 2017-12-13 | 2018-05-29 | 中国矿业大学 | A kind of three-dimensional analog simulation experimental rig for adopting strata movement and gas migration |
| CN108333291A (en) * | 2018-02-01 | 2018-07-27 | 山东科技大学 | A kind of experimental provision and test method of simulation spontaneous combustion in goaf |
| CN109083677A (en) * | 2018-11-05 | 2018-12-25 | 河南工程学院 | A kind of coal seam goaf gas drainage spontaneous combustion imitative experimental appliance |
| CN111312052A (en) * | 2020-04-02 | 2020-06-19 | 中国矿业大学(北京) | Experiment platform and experiment method for simulating movement of mining rock stratum |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1308655A (en) * | 1970-05-14 | 1973-02-21 | Joy Mfg Co Ltd | Method of and machine for use in the construction of the gates in long-wall coal mining |
| CN103758538A (en) * | 2014-01-26 | 2014-04-30 | 山东科技大学 | Cracked roof caving region grouting filling similar simulation method |
| CN104296956A (en) * | 2014-09-09 | 2015-01-21 | 中国矿业大学 | Sublevel caving/mining longwall face goaf flow filed simulation test device and method |
| CN106703867A (en) * | 2017-01-23 | 2017-05-24 | 中国矿业大学 | Coal mine goaf coal spontaneous combustion flow field simulation experiment table |
| CN207570757U (en) * | 2017-08-25 | 2018-07-03 | 河南工程学院 | A kind of fully mechanized coal face inhomogeneous goaf flow field simulation experimental provision |
-
2017
- 2017-08-25 CN CN201710740937.6A patent/CN107328551B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1308655A (en) * | 1970-05-14 | 1973-02-21 | Joy Mfg Co Ltd | Method of and machine for use in the construction of the gates in long-wall coal mining |
| CN103758538A (en) * | 2014-01-26 | 2014-04-30 | 山东科技大学 | Cracked roof caving region grouting filling similar simulation method |
| CN104296956A (en) * | 2014-09-09 | 2015-01-21 | 中国矿业大学 | Sublevel caving/mining longwall face goaf flow filed simulation test device and method |
| CN106703867A (en) * | 2017-01-23 | 2017-05-24 | 中国矿业大学 | Coal mine goaf coal spontaneous combustion flow field simulation experiment table |
| CN207570757U (en) * | 2017-08-25 | 2018-07-03 | 河南工程学院 | A kind of fully mechanized coal face inhomogeneous goaf flow field simulation experimental provision |
Non-Patent Citations (1)
| Title |
|---|
| 杨永良等: "利用顶板冒落规律研究采空区自燃"三带"分布", 《采矿与安全工程学报》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088978A (en) * | 2017-12-13 | 2018-05-29 | 中国矿业大学 | A kind of three-dimensional analog simulation experimental rig for adopting strata movement and gas migration |
| CN108333291A (en) * | 2018-02-01 | 2018-07-27 | 山东科技大学 | A kind of experimental provision and test method of simulation spontaneous combustion in goaf |
| CN109083677A (en) * | 2018-11-05 | 2018-12-25 | 河南工程学院 | A kind of coal seam goaf gas drainage spontaneous combustion imitative experimental appliance |
| CN109083677B (en) * | 2018-11-05 | 2023-08-25 | 河南工程学院 | Coal seam goaf gas extraction spontaneous combustion simulation experiment device |
| CN111312052A (en) * | 2020-04-02 | 2020-06-19 | 中国矿业大学(北京) | Experiment platform and experiment method for simulating movement of mining rock stratum |
| CN111312052B (en) * | 2020-04-02 | 2023-09-15 | 中国矿业大学(北京) | Experimental platform and experimental method for simulating mining rock stratum movement |
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