CN105143875A - Ensuring working conditions along a longwall face - Google Patents
Ensuring working conditions along a longwall face Download PDFInfo
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- CN105143875A CN105143875A CN201480013732.2A CN201480013732A CN105143875A CN 105143875 A CN105143875 A CN 105143875A CN 201480013732 A CN201480013732 A CN 201480013732A CN 105143875 A CN105143875 A CN 105143875A
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- Prior art keywords
- longwell
- diluents
- methane gas
- nozzle
- face
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 202
- 238000009434 installation Methods 0.000 claims abstract description 45
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000003085 diluting agent Substances 0.000 claims description 169
- 230000001681 protective effect Effects 0.000 claims description 64
- 238000009423 ventilation Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000010790 dilution Methods 0.000 abstract description 5
- 239000012895 dilution Substances 0.000 abstract description 5
- 239000003245 coal Substances 0.000 description 9
- 238000005259 measurement Methods 0.000 description 8
- 238000005065 mining Methods 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 5
- 238000000605 extraction Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000007865 diluting Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
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- 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
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/006—Ventilation at the working face of galleries or tunnels
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C27/00—Machines which completely free the mineral from the seam
- E21C27/02—Machines which completely free the mineral from the seam solely by slitting
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/24—Remote control specially adapted for machines for slitting or completely freeing the mineral
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
-
- 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
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The present disclosure relates to a method and device for ensuring working conditions along a longwall face of a longwall mine. A longwall installation unit (5; 16) configured to form a longwall installation assembly (4; 17) together with a plurality of longwall installation units (5; 16) of the same kind may comprise a dilution gas nozzle (30, 30') installed in the longwall installation unit (5; 16) and configured to be fluidly connected to a compressor device. Dilution gas provided by dilution gas nozzle (30) may locally dilute methane gas, for example, in response to a measured methane gas concentration or concentration trend, and thereby ensure working conditions for man and machine.
Description
Technical field
The present invention relates to a kind of method and apparatus for guaranteeing condition of work, and particularly relate to a kind of method and apparatus for guaranteeing along the condition of work in longwell face in underground mine.
Background technology
In the broadwall in coal seam, known problem is the discharge of methane gas.The discharge of methane gas from gas during coal mining process naturally flow out and both producing.Along with extractor cuts along coal seam, the methane gas of kapillary constraint discharges from coal.The methane gas of release has the risk of methane gas blast.
Usually, mine ventilation allows gas concentration to be in acceptable level.Such as, ventilate from air inlet side and air is provided, guide air along longwell, and at exhaust side release air, thus take away any methane gas discharged thereupon.
But safety rule requires to want test constantly concentration of methane gas in underground mining.If the concentration of methane gas recorded reaches critical value, then stop whole longwell mine, comprise such as extractor, protective stent and trailer system, until concentration of methane gas is lower than legal level.In the mining process of Methane Emission with increase, most operation stopping and operating troubles are stopped by those and caused by longwell mine start-up course subsequently even especially, because this is situation about usually occurring in the broadwall of thin seam.
DE102007014662A1 discloses the gas measurement device with multiple gas sensor for longwell mine.If the extraction ratio of the extractor calculated is uncorrelated with the gas concentration recorded, then provide alarm signal.
The present invention is intended to, and at least in part, improves one or more aspect of existing system or overcomes the problem of the one or more aspect of existing system.
Summary of the invention
According to a first aspect of the invention, disclose longwell installation unit, it is configured to form longwell installation component to extend along longwell face in the longwell mine with compressor set together with the longwell installation unit of multiple identical type.Described longwell installation unit can comprise and is arranged in longwell installation unit and is configured to the diluents nozzle that is connected with compressor set fluid.
According to a further aspect in the invention, mine ventilation is provided for guaranteeing to comprise along a kind of method of the condition of work in longwell face in underground mine, and except mine ventilation, at least one from multiple diluents feed units that the position spatially separated along longwell face is arranged provides diluents to longwell face.
By the following description and accompanying drawing, further feature of the present invention and aspect high-visible.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of exemplary longwell mine; And
Fig. 2 is the schematic diagram of exemplary protection support and exemplary operation face conveyor sections.
Embodiment
It is hereafter detailed description of illustrative embodiments of the present invention.Described herein and be intended to instruct principle of the present invention in exemplary embodiment shown in the drawings, enable those skilled in the art at different environment and use the present invention for different application implementations.Therefore, exemplary embodiment is not intended to and should be considered as the restricted description to scope of patent protection.But the scope of patent protection should be limited by the accompanying claims.
Part of the present invention is based on following understanding: in broadwall, and conventional ventilating system may be not enough to the methane gas that discharges and be guided leave longwell face.Such as, increase if ventilated, along with the condition of work of people and machine reduces, if exploitation thin seam, then the region that section is less can limit draft.If this especially can meet the situation that the concentration of methane gas of local temporarily, locally increases.
Longwell installation unit disclosed herein can specifically for region desired on longwell face provides diluents, thus specifically dilutes the concentration of methane gas peak value that records and guarantees people and the acceptable condition of work of machine.
Exemplary longwell mine 1 illustrates at Fig. 1.In order to mine along longwell face 2, longwell mine 1 comprises the working face conveyor 4 with main driving 6 and process auxiliary drive 8 and the extractor 10 delivered by working face conveyor 4.
In operation, extractor 10 cuts to extract coal 3 along longwell face 2 in a reciprocal manner.Such as, extractor 10 can be shearer or plough.The material exploited by extractor 10 fall the stone of extraction and mineral are transported to main road face 12 (also referred to as tunnel) working face conveyor 4 on.Therefore, the fragment of extraction is transferred into and transmits conveyor or road surface conveyor 14.The fragment of conveying can be crush and carry further through such as belt conveyor.
Working face conveyor 4 is arranged along longwell face 2, and comprises several working face conveyor sections 5.Adjacent working face conveyor sections 5 is connected to each other, and such as, so that opposing is separated when applying tensile force, and moves to limit relative angle.Such as, working face conveyor sections 5 is set up in a row between two websites, holds sprocket wheel respectively and uses these sprocket wheels to be redirected the conveyer chain of working face conveyor 4.
In order to keep longwell face 2 can be accessed by, protective stent assembly 17 is arranged along longwell face 2.Protective stent assembly 17 comprises the several protective stents 16 arranged along longwell face 2.At each protective stent 16 place, be supported with mobile device (not shown), it in each case can by loading a push rod in the two directions or walking rod forms by hydraulic pressure,, optionally to push the work forward section by section face conveyor 4 or at operative orientation pull-up protective stent 16 separately at operative orientation (arrow A).Longwell face 2 stays open further by protective cover, forms the upper unit of each protective stent 16.After protective stent 16 advances, country rock only can break and form so-called old workings.
Longwell mine 1 is equipped with multiple diluents feeding unit 20, diluents feeding unit 20 is connected to control module 24 via control linkage pipeline 22 (representing with dot-and-dash line in FIG), and is connected to source of diluent gas 27 via pressurization diluents pipeline 26 (indicated by the solid line in FIG).
Each diluents feeding unit 20 comprises diluents nozzle 30.Diluents valve 28 can between source of diluent gas 27 and diluents nozzle 30 fluid interconnection.Each diluents valve can be associated with diluents feeding unit 20 or can be arranged in diluents pipeline 26.As shown in exemplary in Fig. 1, diluents nozzle 30 is arranged on every three protective stents 16 regularly.Thus diluents nozzle 30 is spatially separating along the position in longwell face 2.Diluents nozzle 30 can be oriented, and such as, towards longwell face 2, if to make diluents valve 28 open, diluents can discharge towards longwell face 2, and allows diluents to flow out corresponding gas nozzle 30 thus.
Diluents valve 8 is such as stop valves, and described stop valve is configured to allow or stop diluents to flow into diluents nozzle 30 from diluents pipeline 26.Alternatively, diluents valve 28 can be operation valve, and described operation valve is configured to control the amount by described diluent gas flow herein.
Control module 24 provides the signal making diluents valve 28 adopt its state via control linkage pipeline 22.Control module 24 can be single microprocessor or multi-microprocessor, and described microprocessor can comprise control especially, the parts of each operation of components of longwell mine 1.Control module 24 can comprise run application required all parts, such as storer, secondary storage device, and the processor of such as CPU (central processing unit) for controlling longwell mine 1 known in the art or other parts any and various parts thereof.Other known circuit various can be associated with control module 24, comprise power circuit, circuit for signal conditioning, telecommunication circuit, and other suitable circuit.Control module 24 can analyze and compare receive and store data, and based on store in memory or user input data or instruction, determine whether that needs are taken measures.Such as, reception value and desired value or pre-set threshold and storage trend in memory can compare by control module 24, and result based on the comparison, signal can be sent to one or more parts to change its duty by control module 24.
Control module 24 can comprise any memory device known in the art, for storing the data relevant with the operation of longwell mine 1 and parts thereof.Data can store with the form of one or more figure, and described figure describes and/or relates to such as valve opening timing.Each figure can be form, chart, and/or equational form, and comprises the data compilation collected from longwell mine 1 laboratory and/or field operation.When changing its correlation parameter under different operating conditionss, these figure can carry out instrumentation Self-adaptive by the operation of longwell mine 1.Control module 24 can with reference to these figure and the operation controlling parts to respond the action required of another assembly.
As used herein, the term be combined with control module " is connected " operation that refers to and there are control linkage pipeline and control module control linkage parts and/or the ability from link reception control signal or measured value.
Source of diluent gas 27 can be arranged on any place on underground mine and/or surface and can be connected to control module 24.Usually, source of diluent gas 27 is substantially free of methane gas.In order to diluents being supplied to the diluents pipeline 26 of the pressure had higher than environmental pressure, source of diluent gas 27 can be such as compressor set.Source of diluent gas 27 can provide the air extracted from surface and/or the draughty region of underground mine (such as, track 12).
In the implementation shown in fig. 1, every 3rd protective stent 16 is equipped with diluents nozzle 30 to be arranged to be spaced apart from each other along longwell face 2 to make diluents nozzle 30.In other embodiments, the distance between adjacent diluents nozzle 30 can be less or comparatively large, and this depends on various influence factor, includes but not limited to the size of protective stent 16, air flux (being indicated by arrow V), coal seam 3 height.Such as, diluents nozzle 30 can along longwell face 2 every 10 meters to 30 meters layouts.
The invention is not restricted to wherein only protective stent 16 embodiment of diluents nozzle 30 is equipped with.Usually, any longwell installation unit (such as, working face conveyor sections 5 or protective stent 16) the multiple longwell installation units 5,16 be configured to together with identical type form longwell installation component (such as, working face conveyor 4 or protective stent assembly 17) to extend along the longwell face 2 in longwell mine 1, diluents nozzle 30 can be comprised.Diluents nozzle 30 can be arranged in longwell installation unit 5,16 and to be configured to fluid and be connected to compressor set 27.It should be pointed out that the source of diluent gas relevant with the feature that combinative prevention support 16 or working face conveyor sections 5 describe can also be applied to other longwell installation units.Working face conveyor sections 5 and protective stent 16 are only the exemplary embodiments of longwell installation unit.
In certain embodiments, each longwell installation unit 5,16 can comprise one or more corresponding diluents nozzle 30, and in other embodiments, every second to the 15 longwell installation unit 5,16 can comprise one or more diluents nozzle 30.In other words, at least one subgroup of multiple longwell installation units 5,16 of multiple longwell installation unit 5,16 can have diluents nozzle 30.
Although shown in Figure 1, diluents nozzle 30 can without the need to equidistant placement.Such as, the distance between adjacent diluents nozzle 30 can be successively decreased towards the central area in longwell face 2, or can successively decrease along the direction of mine ventilation (V).
Refer again to Fig. 1, the methane gas sensor 32 distributed along longwell face 2 is installed in longwell mine 1.In shown configuration, some protective stents 16 are equipped with the region place being configured to spatially be separated to measure the methane gas sensor 32 of concentration of methane gas.Alternatively, at least some working face conveyor sections 5 can be equipped with methane gas sensor 32.
Because each methane gas sensor 32 is connected to control module 24 via control linkage pipeline 22, therefore indicate the signal of the concentration of methane gas at corresponding methane gas sensor 32 place can be supplied to control module 24 in the form of a signal.Such as, methane gas sensor 32 can arrange to make adjacent methane gas sensor 32 being spaced apart from each other from (such as, in the scope of 10 meters to 30 meters) in the scope of 5 meters to 50 meters along longwell face 2.
Each methane gas sensor 32 can have the minor increment apart from adjacent diluents nozzle 30.Described minor increment can be set to guarantee that methane gas sensor does not directly contact with described diluents when being provided diluents by corresponding diluents feeding unit 20, can not be tampered as will no longer represent those measurements of respective regions to make the measurement of methane gas sensor 32.Minor increment used herein refers to the combination of the distance along each spatial axes, and this at least guarantees the minimizing of " short circuit " effect between diluents nozzle and methane gas sensor.Such as, between adjacent methane gas sensor 32 and diluents nozzle 30, can be at least 1 meter along the minor increment in the direction in longwell face 2, and/or can be greater than along the distance between the adjacent diluents nozzle 30 of operative orientation A and longwell face 2 along the distance between the methane gas sensor 32 and longwell face 2 of operative orientation A.
User input apparatus 34 and display device 36 such as can sentence interchangeable mode and arrange in approximated position at longwell mine 1.User input apparatus 34 and display device 36 are connected to control module 24 via corresponding connecting line 38,40.
Use user input apparatus 34 and optional display device 36, miner can control the operation of longwell mine 1, includes but not limited to depth of cut, cutting speed, fltting speed, conveyor speed and/or diluents supply.In order to user can be allowed to input, user input apparatus 34 is configured to receive user's input, such as, via keyboard or touch pad.Display device 36 is configured to the visual information received from control module 24.
The ventilating system in ore deposit provide air by track 12 and by shown in direction arrow V along longwell face 2.Ventilating system can be created as the mine ventilation usually can adjusted by control module 24.
Fig. 2 shows the exemplary embodiment of protective stent 16 to be held open longwell face 2 and working face conveyor section 5.
Protective stent 16 comprises and slides part 42, hydraulic cylinder 44, protective cover 46, and tear drop guard shield 50 be equipped with diluents nozzle 30.
Protective stent 16 has two and mutually contiguously slides part 42, because they rest on the ground on the ground forming workplace, its in underground mining also referred to as ground taxi part.On each ground taxi part 42, how telescopic strong hydraulic cylinder 44 (also referred to as hydraulic prop in underground mining) is supported.The cylinder cover of hydraulic cylinder 44 presses from below and is close to protective cover 46.Be in protective cover 46 in underground mining also referred to as top board lid, be pressed against the rock of the top board (so-called top) forming workplace.
Distance between ground taxi part 42 and protective cover 46 can adjust by shrinking or extending hydraulic cylinder 44.Bindiny mechanism 48 by tear drop guard shield 50, and guarantees ground taxi part 42 and protective cover 46 by corner cylinder 52, and in each state of the extension of hydraulic cylinder 44, plane is parallel and stand haply each other.Bindiny mechanism 48 is exemplarily configured to lemniscate bindiny mechanism.Bindiny mechanism 48 has front rod 54 and back link 56, both can support to the segment distance with two stud receptacle 58 and 60 and ground taxi part 42 interval.
Stud receptacle 58,60 is arranged, respectively on the side plate 62 of tear drop guard shield 50, in hinged way protective cover 46 is connected to tear drop guard shield 50 by link bolt.Corner cylinder 52 is attached to the bracing frame on tear drop guard shield 50 by its one end, and its other end is near protective cover 46, this corner cylinder 52 also can as required by hydraulic pressure loading or unloading for the extra support be articulated and connected between tear drop guard shield 50 and protective cover 46.In addition, protective cover 64 can be connected to protective cover 46 in hinged way.
As mentioned above, diluents nozzle 30 can be installed in protective stent 16.In the configuration of Fig. 2, diluents nozzle 30 is installed to protective cover 64, particularly, is arranged on below protective cover 64.Alternatively, diluents feeding unit 20 can have the different installation site on protective stent 16.Such as, diluents nozzle 30 can be incorporated in protective cover 64, maybe can be installed to or be attached in protective cover 46.
In configuring as shown in Figure 2, the working face conveyor sections 5 of working face conveyor 4 also comprises diluents nozzle 30 '.Described diluents nozzle 30 ' is installed in spill plate 66.Spill plate 66 is arranged in the goaf side of working face conveyor sections 5.Spill plate 66 can be formed by multiple parts and maybe can form as one.According to coal seam height, the height of spill plate 66 can be selected.Along working face conveyor 4, multiple spill plate 66 can be installed, be connected to each other to make contiguous spill plate 66.Such as, spill plate can have such width, and it is substantially equal to the width of the working face conveyor sections 5 along longwell face 2.
Working face conveyor sections 5 may further include material conveying linear chain 68 and reverse stroke linear chain 70.In display configuration, material conveying linear chain 68 is arranged on above reverse stroke linear chain 70.Two material conveying linear chains 68,70 are configured to guide the endless conveyor with transport carrier (not shown).In other embodiments, two material conveying linear chains 68,70 can be arranged side by side.
In certain embodiments, diluents nozzle 30 ' can be arranged on spill plate 66 place or be attached in spill plate 66, such as, is arranged on the top of spill plate 66 or is attached in the top of spill plate 66.
As described in composition graphs 1, extractor 10 is directed at working face conveyor 4 place.
In certain embodiments, diluents nozzle 30,30 ' can comprise the installing mechanism being disposed for being reequiped by diluents nozzle 30,30 ' to protective stent 16 and/or working face conveyor sections 5.Existing protective stent and/or working face conveyor sections can be equipped with diluents nozzle 30,30 '.Diluents supply nozzle 30 can be equipped with it will be understood by those skilled in the art that exemplary disclosed protective stent 16 has specific type as above, but any known protective stent type.
Diluents nozzle 30,30 ' can so that the adjustable way that direction regulates be arranged on protective stent 16 and/or working face conveyor sections 5, and wherein said direction is the directed direction of the jet expansion of diluents nozzle 30.Such as, diluents nozzle 30,30 ' can be pivotally mounted on protective stent 16 and/or working face conveyor sections 5.
Although not shown in Fig. 2, protective stent 16 and/or working face conveyor sections 5 can be equipped with methane gas sensor (see 32 in Fig. 1) further.Such as, diluents nozzle 30 and methane gas sensor 32 interval minor increment as above can be arranged side by side at protective cover 64 place.
In certain embodiments, protective stent 16 and/or working face conveyor sections 5 may further include the diluents valve 28 (not shown in Fig. 2) as composition graphs 1 describes.
In certain embodiments, diluents pipeline 26 (not shown in Fig. 2) can guide below protective cover 46 (such as in the lower rear of protective cover 46, or at working face conveyor 4 place) directed.
Industrial applicibility
Hereinafter, the function of diluents feeding unit is described.
In leaching process, longwell face 2 particular elements (such as protective stent 16, working face conveyor 4 and extractor 10) that moves (also referred to as operative orientation and direction of propulsion) and longwell mine 1 along the direction of arrow A enters seam along the direction of arrow A.
Along with coal 3 is extracted from longwell face 2 by extractor 10, kapillary constraint methane gas can discharge from coal 3.But, be not only leaching process itself and produce methane gas, and methane gas also discharges owing to naturally flowing out.
Mine ventilation (in Fig. 1 shown in arrow V) is provided in order to dilute methane gas along longwell face 2.Except providing mine ventilation, diluents can be supplied to longwell face 2 from least one of multiple diluents nozzles 30 being arranged on position spaced apart along longwell face 2.Such as, control module 24 can make compressor set 27 pairs of diluents (such as air) pressurizations, and diluents can be provided by diluents nozzle 30.It should be noted that provides diluents for from diluents feeding unit 20, and the measurement of concentration of methane gas is not to perform.
Control module 24 can from methane gas sensor 32 Received signal strength, and methane gas sensor 32 is for measuring the concentration of methane gas along the region place multiple spaced apart in longwell face 2 around each methane gas sensor 32.Control module 24 can determine the concentration of methane gas value in each region, and can determine that concentration of methane gas value is greater than at least one region of pre-set threshold.Except mine ventilation, the diluents from least one gas nozzle of multiple diluents nozzle 30 can be supplied to those regions that concentration of methane gas value is greater than pre-set threshold.
Such as, methane gas sensor 32 measurement is greater than the concentration of methane gas of pre-set threshold and corresponding signal is supplied to control module 24.Then control module 24 identifies at least one diluents feeding unit 20 adjacent with each methane gas sensor.Then, described in control module 4 is determined/those diluents feeding units 20 can provide diluents via diluents supply nozzle 30.In order to promote the flowing of diluents, control signal can be supplied to (multiple) each diluents valve 28 by control module 24.In other words, each diluents feeding unit 20 is associated with at least one methane gas sensor 32, and control module 24 is configured to the diluents valve 28 controlling each diluents feeding unit 20 based on the signal received from relevant methane gas sensor 32.Association between methane gas sensor 32 and diluents valve 28 can based on minor increment between the two.
Such as, diluents can be the surrounding air from surface and/or the underground not region extraction of methane-containing gas.Under the state of activation of diluents feeding unit 20, source of diluent gas 27 can guarantee that diluents exists with pressurized state (in the pressure limit such as between 5 bar and 6 bar) in diluents pipeline 26.
If the value of the regional concentration of methane gas measured by each methane gas sensor 32 is back to lower than presetting safe concentration threshold value, then the supply of diluents can be stopped.
In certain embodiments, except the mine ventilation along arrow V, relative to the direction of motion of the cutting zone around to-and-fro movement extractor, can provide before, during and/or after cutting zone from the diluents of at least one in multiple diluents feeding unit 20.Such as, due to preliminary surveying (diluting before cutting zone), directly measure (dilution of cutting zone) and measurement (diluting after cutting zone) subsequently, the high concentration methane gas produced during cutting can be lowered.Note that the diluents for providing before, during and/or after cutting zone from diluents feeding unit 20, the measurement of concentration of methane gas is not necessary.
Alternatively or extraly, control module 24 can based on the depth of cut of the cutting speed of extractor 10, extractor 10, and/or the conveyor speed of the fltting speed of protective stent 16 and/or conveyor device 4 affects the concentration of the methane gas of measurement.Such as, if methane gas value is greater than pre-set threshold, then cutting speed, depth of cut, conveyor speed and/or fltting speed can reduce.
In certain embodiments, control module 24 can be configured to control mine ventilation (such as Fig. 1 is along arrow V) in its usable range, to increase or reduce ventilation by passage 20 along longwell face 2 based on the concentration of methane gas measured.
As mentioned above, control module 24 can also be configured to the propelling controlling protective stent 16 further, and this control module can contribute to controlling venting area, and it can be limited by longwell face 2, top board, protective stent 16 and ground.Before known protective stent 16 advanced in order itself can be decelerated or be parked in the measured region of the concentration of methane gas of increase or this region, this can keep this zonal ventilation cross section large as far as possible, to discharge methane gas.
Alternatively or extraly, control module 24 can be connected to working face conveyor 4 to control its operation.The control of working face conveyor 4 speed can have such effect: the conveying sooner of the extraction material on working face conveyor 4 can reduce the external flux of kapillary constraint methane gas, and this kapillary constraint methane gas is the material extracted that contiguous longwell face 2 is carried towards conveyor 4.Alternately, then the kapillary constraint methane gas of the material extracted can flow out in a large number after walking road surface conveyor 14.
In addition, diluents feeding unit 20 can be assisted by the duster system (not shown) based on water.Duster system based on water can be connected to control module 24, and control module 24 also can control the operation of the duster system based on water based on the signal received from methane gas sensor 32.Such as, multiple (operating) water nozzle can be provided along longwell face 2 at protective stent 16 place.
In certain embodiments, diluents nozzle 30 may be incorporated into the nozzle unit (not shown) of protective stent, and nozzle unit also comprises the spray nozzle of the above-mentioned duster system based on water.
Based on the time sequencing of the concentration of methane gas recorded at regional by respective methane gas sensor 32, control module 24 can be configured to the temporal evolution determining the concentration of methane gas in each region further.Therefore, control module 24 can be derived from the concentration of methane gas for each region.Control module 24 can determine that concentration of methane gas trend is greater than at least one region of pre-set threshold trend further, and except mine ventilation, the region that control module 24 can be greater than pre-set threshold trend to those concentration of methane gas trend provides diluents.
As mentioned above, in certain embodiments, diluents nozzle 30 can be mounted or be incorporated in protective stent 16 or working face conveyor sections 5 in an adjustable way, to make the direction of diluents nozzle 30 tube nozzle outlet be directed can be regulated by control module 24, such as, based on the concentration of methane gas measured.Such as, the orientable region measured to the concentration of methane gas increased of the jet expansion of diluents nozzle 30.There is provided diluents nozzle 30 can contribute to further reducing the overall quantity along the diluents nozzle 30 in longwell face 2 with adjustable way.Its reason is, compared with uncontrollable diluents nozzle 30, adjustable diluents nozzle 30 can provide diluents to larger region.
In certain embodiments, control module 24 determines the concentration of methane gas curve in longwell face 2 based on the signal received from methane gas sensor 32.Based on the concentration of methane gas curve determined, the multiple different operational scenario of longwell mine 1 can be determined by control module 24.At least one that can relate in cutting speed, depth of cut, transporting velocity, diluents supply, ventilation and fltting speed of those operational scenario changes.Such as, when methane gas sensor 32 can measure cumulative concentration of methane gas, first operational scenario can comprise the cutting speed of reduction, second operational scenario can comprise the depth of cut of reduction, 3rd operational scenario can comprise the startup of at least one diluents feeding unit 20, and the 3rd operational scenario can be the combination of first, second, and third operational scenario.Those operational scenario can output to display device 36 from control module 24.There, different operational scenario can present to user.User can select one of operational scenario proposed by user input apparatus 34.Based on the operational scenario that user selects, control module 24 then can control longwell mine 1.
Multiple presetting diluents supply program can be stored in control module 24.The example of diluents supply program can be that diluents heavy curtain, continuously sprinkling and focus spray.Diluents heavy curtain can refer to such program, and wherein at least two adjacent diluents unit 20 may be used for supplying diluents.Continuous sprinkling can refer to such program, and wherein the diluents unit of at least two vicinities starts continuously, and focus sprinkling can refer to such program, and wherein at least one diluents unit is for supplying diluents.Such as, based on the concentration of methane gas measured by methane gas sensor 32, control module 24 can determine one of multiple presetting diluents supply program, and can control diluents feeding unit 20 based on the diluents supply program determined.Alternatively, control module 24 can determine diluents supply according to user's input.
Contrary with traditional mine ventilation, diluents feeding unit 20 is specifically designed to and allows to provide diluents to concentration of methane gas peak region, for diluting methane gas.In addition, diluents feeding unit 20 and mine ventilation can be cooperated by the impact increased each other.Such as, the dilution methane gas that diluents feeding unit 20 dilutes can pass through mine ventilation (along arrow V in Fig. 1) and discharge from longwell face 2.
Concentration of methane gas peak value can move (flowing) along longwell face 1 in mine ventilation V (along arrow v in Fig. 1) direction.Control module 24 can monitor the movement of concentration of methane gas peak value, because this can be indicated to move from the signal of methane gas sensor 32 reception.Control module 24 can be configured to control diluents supply with the gas concentration peak value of " expulsion " movement and/or the premeasuring that performed before the concentration of methane gas peak value of movement reaches specific region by diluents nozzle 30.Premeasuring can be moved at this before (flowing) concentration of methane gas peak value arrives described specific region provides diluents to specific region.
Therefore, concentration of methane gas peak value greatly reduces, and this may increase running time of longwell mine 1 and throughput rate and security, guarantees the condition of work of people and machine, because diluents is only supplied to specific presumptive area simultaneously.
According to another aspect, diluents feeding unit 20 is configured to use in the longwell mine 1 with longwell face 2.Diluents feeding unit 20 comprises diluents pipeline 26, the diluents valve 28 be arranged in diluents pipeline 26, and diluents nozzle 30 fluid is connected to diluents pipeline 26, and is configured to be arranged on the position towards longwell face 2.
In certain embodiments, the diluents nozzle 30 of diluents feeding unit 20 is configured to the diluents providing adjustable direction and/or quantity.
Although there have been described herein the preferred embodiments of the present invention, can make when not deviating from following Claims scope and improving and amendment.
Claims (15)
1. a longwell installation unit (5; 16), it is configured to the longwell installation unit (5 together with multiple identical type; 16) be formed in together in the longwell mine (1) with compressor set (27) along the longwell installation component (4 that described longwell face (2) extends; 17), described longwell installation unit (5; 16) comprising:
Diluents nozzle (30), it is arranged on described longwell installation unit (5; 16) be configured to fluid and be connected to described compressor set (27) in.
2. longwell installation unit (5 according to claim 1; 16), wherein said longwell installation unit (5; 16) protective stent (16) is configured to.
3. longwell installation unit (5 according to claim 2; 16), wherein said protective stent (16) comprises further:
Protective cover (64), and wherein said diluents nozzle (30) is arranged on described protective cover (64) place or is attached in described protective cover (64); And/or
Protective cover (46), and wherein said diluents nozzle (30) is arranged on described protective cover (46) place or is attached in described protective cover (46).
4. longwell installation unit (5 according to claim 1; 16), wherein said longwell installation unit (5; 16) working face conveyor sections (5) is configured to.
5. longwell installation unit (5) according to claim 4, wherein said working face conveyor sections (5) comprises the spill plate (66) at the goaf side place being arranged on described working face conveyor sections (5) further, and wherein said diluents nozzle (30) is arranged on described spill plate (66) place or is combined in described spill plate (66).
6. according to longwell installation unit (5 in any one of the preceding claims wherein; 16), wherein said diluents nozzle (30) is configured to provide the diluents that can regulate direction and/or quantity, and/or
Wherein said longwell installation unit (5; 16) comprise fluid to be further connected to described diluents nozzle (30) and to be configured to be connected to the diluents valve (28) of described compressor set (27).
7. one kind is configured in longwell mine (1) along the longwell installation component (4 that longwell face (2) install; 17), described longwell installation component (4; 17) comprising:
Be configured to the multiple longwell installation units (5 arranged along described longwell face (2); 16), be configured to according to any one in claim 1 to 6 the multiple longwell installation units (5 comprising corresponding diluents nozzle (30); 16) at least one subgroup,
Compressor set (27), its fluid is connected to corresponding diluents nozzle (30) to provide compression diluents; And
Control module (24), it is configured to control from described compressor set (27) to the diluent gas flow of corresponding diluents nozzle (30).
8. longwell installation component (4 according to claim 7; 17), wherein said control module (24) is configured to control described multiple longwell installation unit (5 further; 16) diluents valve (28).
9. the longwell installation component (4 according to claim 7 or 8; 17), comprise further:
Multiple methane gas sensor (32), it is installed on the disconnected position place, space along described longwell face (2), and each methane gas sensor (32) is connected to described control module (24), and
Wherein said control module (24) is configured to control described diluents valve (28) and/or described compressor set (27) based on the signal received from described methane gas sensor (32) further.
10. longwell installation component (4 according to claim 9; 17), wherein said control module (24) is configured to the signal based on receiving from described methane gas sensor (32) further, control the propelling of the cutting speed of extractor (10), the depth of cut of described extractor (10), multiple protective stent (16), and/or at least one in the conveyor speed of working face conveyor (4).
Longwell installation component (4 according to any one of 11. according to Claim 8 to 10; 17), wherein at described multiple longwell installation unit (5; 16) in, every second to each longwell installation unit (5 in every 15 scope; 16) be configured to comprise corresponding diluents nozzle (30) according to any one in claim 1 to 6, and/or
Described multiple methane gas sensor (32) is arranged along described longwell face (2), is separated by the scope of 10 meters to 30 meters to make contiguous methane gas sensor (32).
12. 1 kinds for guaranteeing the method along the condition of work of longwell face (2) in longwell mine (1), described method comprises:
Mine ventilation is provided; And,
Except described mine ventilation is provided, diluents is supplied to described longwell face (2) from least one in multiple diluents feeding units (20) of the space disconnected position layout along described longwell face (2).
13. methods according to claim 12, comprise further:
The region place monitoring concentration of methane gas separated along multiple spaces of described longwell face (2), determines the concentration of methane gas in each region thus; And
Determine that described concentration of methane gas value is greater than at least one region of pre-set threshold, and
Wherein said diluents is supplied to from least one described multiple diluents feeding unit (20) region that described methane gas value is greater than described pre-set threshold.
14. methods according to claim 12 or 13, comprise further:
Along cutting material in the reciprocating cutting zone of described longwell face (2), and
Before, during and/or after wherein said diluents is provided in cutting zone relative to the moving direction of described cutting zone.
15., according to claim 12 to the method according to any one of 14, comprise further:
Atomizing of liquids to described concentration of methane gas value is greater than the described region of described pre-set threshold; And/or
If concentration of methane gas value is greater than pre-set threshold, then reduce cutting speed, depth of cut, conveyor speed, and/or at least one in fltting speed.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP13159606.6 | 2013-03-15 | ||
| EP13159606.6A EP2778676A1 (en) | 2013-03-15 | 2013-03-15 | Ensuring working conditions along a longwall face |
| PCT/EP2014/000649 WO2014139671A1 (en) | 2013-03-15 | 2014-03-11 | Ensuring working conditions along a longwall face |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105143875A true CN105143875A (en) | 2015-12-09 |
Family
ID=47913064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480013732.2A Pending CN105143875A (en) | 2013-03-15 | 2014-03-11 | Ensuring working conditions along a longwall face |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20160024922A1 (en) |
| EP (1) | EP2778676A1 (en) |
| CN (1) | CN105143875A (en) |
| AU (1) | AU2014231213A1 (en) |
| WO (1) | WO2014139671A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106290743A (en) * | 2016-10-08 | 2017-01-04 | 安徽理工大学 | A kind of coal mine gas concentration detection and safety early warning device |
| CN107923243A (en) * | 2015-07-28 | 2018-04-17 | 安德烈·范·戴克 | Tunnel excavator |
| CN109339833A (en) * | 2018-12-05 | 2019-02-15 | 贵州大学 | A kind of coal mining protective device that anti-waste residue falls |
| CN113356914A (en) * | 2021-07-20 | 2021-09-07 | 福州大学 | Shield support for thin-layer inclined ore body mining support and construction method |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2905422A1 (en) * | 2014-02-07 | 2015-08-12 | Caterpillar Global Mining Europe GmbH | Device and method for longwall mining installation course determination |
| CN104131829B (en) * | 2014-06-25 | 2016-05-04 | 中国矿业大学 | A kind of solid filling coal mining hydraulic supporting building and withdrawing frame method |
| JP2017096703A (en) * | 2015-11-20 | 2017-06-01 | 大成建設株式会社 | Gas measuring device and gas concentration visualization system, and monitoring method for excavation site |
| PL235094B1 (en) * | 2017-11-17 | 2020-05-18 | Instytut Mech Gorotworu Polskiej Akademii Nauk | Method and the control system of the mining winning machine in the methane longwalls |
| US20210348988A1 (en) * | 2020-05-06 | 2021-11-11 | West Virginia University Board of Governors on behalf of West Virginia University | Methane watchdog system, a cost effective approach to longwall methane monitoring and control |
| US12000284B1 (en) * | 2023-01-10 | 2024-06-04 | Swanson Industries, Inc. | Swing arm plow apparatuses and methods |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4084855A (en) * | 1975-12-24 | 1978-04-18 | United States Steel Corporation | Water-driven air pumping and dust-suppressing apparatus |
| GB2129035A (en) * | 1982-10-22 | 1984-05-10 | Pitcraft Summit Ltd | Mineral cutting machine |
| DE3639452A1 (en) * | 1986-11-18 | 1988-05-19 | Gewerk Eisenhuette Westfalia | Plough-track spraying system |
| DE19537448A1 (en) * | 1994-11-03 | 1996-05-15 | Tiefenbach Gmbh | Water nozzle supply installation for mine walling machines |
| CN2881102Y (en) * | 2006-03-10 | 2007-03-21 | 吴金南 | Combined device for explosion-proof, dust proof and use of coal mine gas |
| CN201513192U (en) * | 2009-08-24 | 2010-06-23 | 吴江市宏达通风制冷设备厂 | Air returning device for mine |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1433193A (en) * | 1972-04-29 | 1976-04-22 | Gewerk Eisenhuette Westfalia | Dust suppression method and a mining installation including dust suppression apparatus |
| GB1452862A (en) * | 1974-01-18 | 1976-10-20 | Coal Industry Patents Ltd | Apparatus for ventilating cutter heads of mineral mining machines |
| DE2550049C2 (en) * | 1975-11-07 | 1983-11-03 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Device for precipitating dust in mining and extraction operations |
| US4382633A (en) * | 1981-02-24 | 1983-05-10 | Foster-Miller Associates, Inc. | Longwall mining system |
| GB2107757B (en) * | 1981-10-13 | 1985-04-17 | Coal Ind | Rotary cutter heads for mining machines |
| GB2129466B (en) * | 1982-10-15 | 1985-06-26 | Coal Ind | Mining installation equipment |
| GB2133435B (en) * | 1983-01-11 | 1985-11-13 | Coal Ind | Rotary cutter heads for mineral mining machines |
| US5161857A (en) * | 1991-04-29 | 1992-11-10 | The United States Of America, As Represented By The Secretary Of The Interior | Teleoperated control system for underground room and pillar mining |
| DE102005057693A1 (en) * | 2005-12-01 | 2007-06-06 | Dbt Gmbh | Press water application device for use in underground mining, has sprinkling valve block provided with connection for water pipe, and arranged as unit at plate extension frame, where unit is separated from hydraulic valve block |
| DE102007014662B4 (en) | 2007-03-27 | 2010-07-29 | Marco Systemanalyse Und Entwicklung Gmbh | Method for operating a mining device, longwall construction for carrying out the method and control for such a longwall construction |
| DE202007006122U1 (en) * | 2007-04-26 | 2008-06-26 | Bucyrus Dbt Europe Gmbh | Device for determining the cutting horizon of a mining plant and channel element for this purpose |
-
2013
- 2013-03-15 EP EP13159606.6A patent/EP2778676A1/en not_active Withdrawn
-
2014
- 2014-03-11 CN CN201480013732.2A patent/CN105143875A/en active Pending
- 2014-03-11 US US14/775,874 patent/US20160024922A1/en not_active Abandoned
- 2014-03-11 AU AU2014231213A patent/AU2014231213A1/en not_active Abandoned
- 2014-03-11 WO PCT/EP2014/000649 patent/WO2014139671A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4084855A (en) * | 1975-12-24 | 1978-04-18 | United States Steel Corporation | Water-driven air pumping and dust-suppressing apparatus |
| GB2129035A (en) * | 1982-10-22 | 1984-05-10 | Pitcraft Summit Ltd | Mineral cutting machine |
| DE3639452A1 (en) * | 1986-11-18 | 1988-05-19 | Gewerk Eisenhuette Westfalia | Plough-track spraying system |
| DE19537448A1 (en) * | 1994-11-03 | 1996-05-15 | Tiefenbach Gmbh | Water nozzle supply installation for mine walling machines |
| CN2881102Y (en) * | 2006-03-10 | 2007-03-21 | 吴金南 | Combined device for explosion-proof, dust proof and use of coal mine gas |
| CN201513192U (en) * | 2009-08-24 | 2010-06-23 | 吴江市宏达通风制冷设备厂 | Air returning device for mine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107923243A (en) * | 2015-07-28 | 2018-04-17 | 安德烈·范·戴克 | Tunnel excavator |
| CN106290743A (en) * | 2016-10-08 | 2017-01-04 | 安徽理工大学 | A kind of coal mine gas concentration detection and safety early warning device |
| CN109339833A (en) * | 2018-12-05 | 2019-02-15 | 贵州大学 | A kind of coal mining protective device that anti-waste residue falls |
| CN113356914A (en) * | 2021-07-20 | 2021-09-07 | 福州大学 | Shield support for thin-layer inclined ore body mining support and construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| US20160024922A1 (en) | 2016-01-28 |
| EP2778676A1 (en) | 2014-09-17 |
| AU2014231213A1 (en) | 2015-10-29 |
| WO2014139671A1 (en) | 2014-09-18 |
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