CN102621233B - Large simulation test counter-force rack for multi field coupling coal mine dynamic disaster - Google Patents
Large simulation test counter-force rack for multi field coupling coal mine dynamic disaster Download PDFInfo
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- CN102621233B CN102621233B CN201210082377.7A CN201210082377A CN102621233B CN 102621233 B CN102621233 B CN 102621233B CN 201210082377 A CN201210082377 A CN 201210082377A CN 102621233 B CN102621233 B CN 102621233B
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Abstract
The invention discloses a large simulation test counter-force rack for a multi field coupling coal mine dynamic disaster, and the large simulation test counter-force rack comprises a bottom plate, wherein the bottom plate is provided with a plurality of bolt connection holes; the rear part of the bottom plate is provided with a vertical plate; the vertical plate is provided with a first opening; the rear part of the vertical plate is fixedly provided with a door frame; the door frame is provided with a second opening opposite to the first opening; the second opening of the door frame is provided with a left sliding door and a right sliding door which can plug the second opening; the left sliding door is connected with a left cylinder; the right sliding door is connected with a right cylinder; a first roller is respectively arranged between the upper part of the front door surfaces of the left sliding door and the right sliding door and the door frame and between the lower part of the front door surfaces and the door frame; a second roller is respectively arranged between the upper side surfaces of the left sliding door and the right sliding door and the door frame and between the lower side surfaces of the left sliding door and the right sliding door and the door frame; and the opposite surfaces of the left sliding door and the right sliding door are respectively provided with a left sealing plate and a right sealing plate. According to the large simulation test counter-force rack, the coal mine dynamic disaster process can be accurately simulated so as to more scientifically research a coal mine dynamic disaster forming mechanism.
Description
Technical field
The present invention relates to a kind of experimental reaction frame bridging of simulating colliery dynamic disaster process under many coupling mechanism.
Background technology
Colliery dynamic disaster is in process of coal mining, under high-stress state, gather coal or the rock mass of great number of elastic energy, destroy under certain conditions suddenly, inbreak or dish out, make energy sudden outburst, present the obviously extremely complicated dynamic phenomenon of dynamic effect such as the sound, vibrations and blast, it mainly contains coal and Gas Outburst, rock burst and large area roof fall three kinds of principal modes, the safety in production in serious threat colliery and miner's life security.Dynamic disaster be difficult to prediction and hold, action pathway and mechanism that it is inherent are not also thoroughly familiar with by the mankind, and along with the increase day by day of the coal mining degree of depth, colliery dynamic disaster occurrence frequency is more and more higher, intensity is also increasing, mine motive force disaster cause calamity mechanism, trigger condition, Evolution and becoming increasingly complex of presentation attributes, at present, also lack the breed-generation-evolution mechanism to dynamic disaster under Mining in Deep-lying Conditions, the systematic study of Basic Science Problem and early warning Preventing Countermeasures, therefore strengthen colliery dynamic disaster mechanism, the research of prediction and prophylactico-therapeutic measures thereof is extremely important.Coal and gas outburst mechanism aspect, scholar admits combined action hypothesis mostly, it thinks that coal petrography and Gas Outburst are the coefficient results of physico-mechanical properties by terrestrial stress, gas, coal, but how on earth still very unclear the percentage contribution of three in coal petrography and Gas Outburst be, and gas pressure, stress of coal seam and the coal temperature temporal and spatial evolution before and after coal and Gas Outburst is still very undistinct, therefore coal and gas outburst mechanism are still indefinite, and this has manufactured a difficult problem to the preventing and controlling of colliery dynamic disaster.
In prior art, mainly there is following problem in the test unit of simulation colliery dynamic disaster: the moulded dimension that (1) adopts is less, and the evolution of simulation dynamic disaster has certain space constraint; (2) automaticity that device is installed is lower; (3) device sealing is not high, and simulation gas pressure is little, and the pressure of test simulation gas can not approach field condition; (4) opening speed of aspis baffle plate is slow or have certain time delay, has affected to a certain extent the time and intensity of coal and Gas Outburst, and therefore realistic simulation situation is with truly underground coal and Gas Outburst still exist difference; (5) terrestrial stress of simulation can not simulate the stress raisers that the face of adopting causes due to mining activity completely; (6) the coal body parameter acquisition of outstanding mould inside is inadequate, and most cases is only to have gathered temperature and gas pressure, and collection point is comparatively single, can not analyze and research to stress and the temperature rule of development of coal body inside before and after the dynamic disaster of colliery.
Therefore those skilled in the art are devoted to develop a kind of pilot system that can accurately simulate colliery dynamic disaster process, with scientific research colliery dynamic disaster mechanism.
Summary of the invention
Because the above-mentioned defect of prior art, technical matters to be solved by this invention is to provide a kind of pilot system that can accurately simulate colliery dynamic disaster process.
For achieving the above object, the invention provides a kind of many coupling colliery dynamic disaster large scale mock up test systems, comprise frame and be placed in the test specimen case in described frame; Described test specimen case comprises casing; The top of described casing has been bolted to connection cover plate; On described cover plate, be provided with at least three Z-direction depression bar covers; In each Z-direction depression bar cover, be provided with Z-direction depression bar; On described Z-direction depression bar, be fixedly connected with Z-direction pressing plate; Described Z-direction pressing plate is positioned at described casing; On the right boxboard of described casing, be provided with at least three Y-direction depression bar covers; In each Y-direction depression bar cover, be provided with Y-direction depression bar; On described Y-direction depression bar, be fixedly connected with Y-direction pressing plate; Described Y-direction pressing plate is positioned at described casing; On the rearing-box plate of described casing, be provided with at least one X to depression bar cover; Each X is provided with X to depression bar in depression bar cover; Described X is fixedly connected with X to pressing plate on depression bar; Described X is positioned at described casing to pressing plate; The front boxboard of described casing is provided with aspis; The bottom of described casing is provided with air permeable steel plate and air flue; Described air permeable steel plate covers on described air flue; The import of described air flue is provided with interior plug; The outside interval of left boxboard of described casing is fixedly connected with the first backing plate; Described left boxboard is provided with sensor interface between the interval of each the first backing plate; In described sensor interface, be provided with sensor connector; Described frame comprises base; On described base, be fixed with left column and right column; The upper end of described left column and right column is fixed with crossbeam; Described test specimen case is placed on described base; On described crossbeam, be provided with the Z-direction pressurized cylinder corresponding with the quantity of described Z-direction depression bar and position; On described right column, be provided with the Y-direction pressurized cylinder corresponding with described Y-direction depression bar quantity and position; On described left column, be provided with second backing plate corresponding with described the first backing plate position; The rear end of described base is fixedly connected with and adds seat; Described adding, is provided with on seat with described X to the quantity of depression bar and the corresponding X in position to pressurized cylinder; This pilot system also comprises the reaction frame that can be fixedly connected with the front portion of described base; The rear portion of described reaction frame is provided with the first opening that can be relative with described aspis; The rear portion of described reaction frame is fixedly connected with doorframe; On described doorframe, be provided with second opening relative with described the first opening; Corresponding described the second opening part of described doorframe be provided with can shutoff described in left sliding door and the right sliding door of aspis and described the second opening; Described left sliding door is connected with left cylinder; Described right sliding door is connected with right cylinder; Two positions up and down of the front shop front of described left sliding door and right sliding door all and between described doorframe, be provided with the first roller; Two sides up and down of described left sliding door and right sliding door all and between described doorframe, be provided with the second roller; On the right opposite of described left sliding door and right sliding door, be respectively arranged with left seal pad and right seal pad; The end of the corresponding described left sliding door of described test specimen case and right sliding door is provided with the second O-ring seal.
For improving the sealing of test specimen case, the top of the left boxboard of described casing, right boxboard, front boxboard and rearing-box plate is staircase structure, described staircase structure is greater than the height away from described cabinets cavity near the height of described cabinets cavity, thereby makes the top of described casing form boss; Described cover plate and described casing fasten; At described boss place, between described cover plate and described casing, be provided with sealing gasket; Described cover plate and described casing are bolted to connection at described boss place.
For adapting to the different dimensional requirement of aspis, in described aspis, be bolted to connection outstanding cover; Between described outstanding cover and described front boxboard, be provided with the first O-ring seal; Described the second O-ring seal is arranged on the end that described outstanding cover is relative with right sliding door with described left sliding door.
For obtaining Coal and Gas Outburst Cavern forming process and coal and Gas Outburst evolution, provide direct data, studied the evolution of the spatial shape of hole, the temporal-spatial evolution phenomenon visual reproduction of realization to coal fracturing in coal and Gas Outburst, the spatial shape of the inner acoustic emission of research coal body, is provided with probe mounting hole on the boxboard of described casing; Described probe mounting hole is welded with plug near inner chamber one end of described casing, away from inner chamber one end of described casing, is combined with the first bolt; The arranged outside sound source probe of described plug; Between described sound source probe and the end face of described the first bolt, be pressed with spring; On described the first bolt, be provided with the first axially extending bore; In described the first axially extending bore, be combined with the second bolt; On described the second bolt, be provided with the second axially extending bore; The external wire of described sound source probe picks out from described the first axially extending bore and the second axially extending bore.
For improving the reliability of sound source probe, described the first axially extending bore comprises taper hole; The aperture of described taper hole diminishes gradually along the direction near described cabinets cavity; In described the first axially extending bore, be positioned at described taper hole place and be provided with cutting ferrule; Described the second bolt is arranged on the outside of described cutting ferrule; The front end of described cutting ferrule is coniform, and its tapering is less than the tapering of described taper hole; The front end edge of described cutting ferrule is axially provided with at least two open slots; Described open slot is uniform at circumferencial direction.
For ease of test specimen case, be placed on the base of frame, between described test specimen case and described base, Rolling base be set; Described Rolling base comprises the rolling seat being fixedly connected with described base and is arranged at the described rolling body rolling in seat.
For the complex distributions phenomenon of stress of coal seam during different top board operational phase in mining process under more real simulation well, on described cover plate, be fixedly connected with four described Z-direction depression bar covers; The front end of described casing is provided with four described Y-direction depression bar covers; The left end of described casing is provided with a described X to depression bar cover.
For avoiding mutually interfering between three-dimensional loading force, the corner of the Z-direction pressing plate that described X is adjacent to pressing plate is provided with the first anti-interference plate; The corner of the Y-direction pressing plate that described X is adjacent to pressing plate is provided with the second anti-interference plate; The corner of the Z-direction pressing plate that each described Y-direction pressing plate is adjacent is provided with the 3rd anti-interference plate.
For the parameter of coal and rock inside before and after collection of coal mine dynamic disaster more accurately, on the left boxboard of described casing, be arranged with sensor interface described in three row in parallel; In the close direction of described aspis, the distribution density of described sensor interface strengthens gradually.
Preferably, described sensor interface is provided with 18 at every row.
For further improving the load-bearing capacity of reaction frame, the left side of described base plate is fixed with the first left stiffening plate and the second left stiffening plate; Described the first left stiffening plate and the second left stiffening plate and described riser form right angle triangular structure; The right side of described base plate is fixed with the first right stiffening plate and the second right stiffening plate; Described the first right stiffening plate and the second right stiffening plate and described riser form right angle triangular structure.
The invention has the beneficial effects as follows: the present invention can monitor the temporal and spatial evolution of the acoustic emission signal of dynamic disaster generation front and back, colliery coal and rock gas pressure, terrestrial stress, temperature variation and coal and rock, reach inner link between research stress field, seepage field, temperature field and field, crack and the object of the mechanism of action that intercouples thereof in the dynamic disaster process of colliery, thereby disclose to a deeper level the mechanism that colliery dynamic disaster occurs, for dynamic disaster control in colliery is provided fundamental basis.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the invention.
Fig. 2 is the plan structure schematic diagram of Fig. 1.
Fig. 3 is the left TV structure schematic diagram of Fig. 1.
Fig. 4 is the partial enlarged drawing at A place in Fig. 1.
Fig. 5 is the structural representation of test specimen case in the embodiment of the invention.
Fig. 6 is the plan structure schematic diagram of Fig. 5.
Fig. 7 is the left TV structure schematic diagram of Fig. 5.
Fig. 8 is the partial enlarged drawing at I place in Fig. 5.
Fig. 9 is the partial enlarged drawing at II place in Fig. 5.
Figure 10 is the partial enlarged drawing at III place in Fig. 5.
Figure 11 is the partial enlarged drawing at IV place in Fig. 5.
Figure 12 is the mounting structure schematic diagram of sound source probe in the embodiment of the invention.
Figure 13 is the partial enlarged drawing at V place in Figure 12.
Figure 14 is the structural representation of cutting ferrule in the embodiment of the invention.
Figure 15 is the upward view of Figure 14.
Figure 16 is the structural representation of embodiment of the invention mid frame.
Figure 17 is the plan structure schematic diagram of Figure 16.
Figure 18 is the left TV structure schematic diagram of Figure 16.
Figure 19 is the structural representation of reaction frame in the embodiment of the invention.
Figure 20 is the plan structure schematic diagram of Figure 19.
Figure 21 is the left TV structure schematic diagram of Figure 19.
Figure 22 is the partial enlarged drawing at VI place in Figure 19.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
As shown in Figures 1 to 4, a kind of many coupling colliery dynamic disaster large scale mock up test systems, comprise frame 200 and are placed in the test specimen case 100 in frame 200.
As shown in Fig. 5 to Figure 11, cover plate 4 fastens with casing 1.At boss 48 places, between cover plate 4 and casing 1, be provided with sealing gasket 49, and cover plate 4 is bolted to connection at boss 48 places with casing 1.
In the present embodiment, be fixedly connected with four Z-direction depression bar covers 2 on cover plate 4, in each Z-direction depression bar cover 2, be provided with Z-direction depression bar 3, be fixedly connected with Z-direction pressing plate 11 on Z-direction depression bar 3, Z-direction pressing plate 11 is positioned at casing 1.In other embodiments, on cover plate 4, also can be fixedly connected with the Z-direction depression bar cover 2 of three other above quantity, as 3,5,6 etc., to reach essentially identical technique effect.
On the right boxboard of casing 1, be provided with four Y-direction depression bar covers 5, in each Y-direction depression bar cover 5, be provided with Y-direction depression bar 6, be fixedly connected with Y-direction pressing plate 12 on Y-direction depression bar 6, Y-direction pressing plate 12 is positioned at casing 1.In other embodiments, on right boxboard, also can be fixedly connected with the Y-direction depression bar cover 5 of three other above quantity, as 3,5,6 etc., to reach essentially identical technique effect.
On the rearing-box plate of casing 1, be provided with an X to depression bar cover 7, each X is provided with X to depression bar 8 in depression bar cover 7, and X is fixedly connected with X to pressing plate 13 on depression bar 8, and X is positioned at casing 1 to pressing plate 13.In other embodiments, the X that also can be fixedly connected with other quantity on rearing-box plate is to depression bar cover 7, as 2,3,4 etc., to reach essentially identical technique effect.
The corner of the Z-direction pressing plate 11 that X is adjacent to pressing plate 13 is provided with the first anti-interference plate 14, the corner of the Y-direction pressing plate 12 that X is adjacent to pressing plate 13 is provided with the second anti-interference plate 59, and the corner of the Z-direction pressing plate 11 that each Y-direction pressing plate 12 is adjacent is provided with the 3rd anti-interference plate 15.
In the present embodiment, between the depression bar cover of three directions and depression bar, be all disposed with F4 bronze compound substance guidance tape 55, ST oblique crank Z combination sealing box 56, J-shaped without bone dust ring 57, between depression bar cover and casing or cover plate, be provided with sealing gasket 58, in conjunction with other hermetically-sealed constructions in the present embodiment, make the impermeability of test specimen case reach the standard of 6MP simultaneously; Meanwhile, when this hermetically-sealed construction makes to load, friction force is very little, and easy for installation.
The front boxboard of casing 1 is provided with aspis 9, has been bolted to connection outstanding cover 10 in aspis 9, between outstanding cover 10 and front boxboard, is provided with the first O-ring seal 47.The highlight of test specimen case is designed to dismountable structure, therefore can meets different testing requirementss by the outstanding cover 10 of changing different inner diameters.
The bottom of casing 1 is provided with air permeable steel plate 16 and air flue 17, and air permeable steel plate 16 covers on air flue 17.The import of air flue 17 is provided with interior plug 54, and this interior plug 54 can be connected with external tracheae.
The outside interval of left boxboard of casing 1 is fixedly connected with four lines the first backing plate 28, and left boxboard is provided with a line sensor interface 18 between the interval of each the first backing plate 28, is provided with sensor connector 19 in sensor interface 18, and this sensor connector 19 is Aviation Connector.The quantity of every line sensor interface 18 is 18, and in the close direction of aspis 9, the distribution density of sensor interface 18 strengthens gradually.
In the present embodiment, each sensor connector 19 places can access methane gas pressure transducer, coal seam pressure transducer and coal seam temperature sensor simultaneously.Wherein, adopt 24 methane gas pressure transducers to measure pressure and the concentration of methane gas, specification is 10MPa, measuring accuracy ± 1%; 24 coal seam pressure transducers, specification is 10MPa, measuring accuracy ± 1%; 12 coal seam temperature sensors, specification is 0～100 ℃, measuring accuracy ± 1 ℃.Sensor is connected with 88 channel data collection plates, and 8 channel data collection plates communicate by hub and computer system, thereby composition data acquisition system realizes collection, transmission, demonstration and the preservation of data.
Each sensor can be uniform on test specimen case, also can regulate the measuring position of three kinds of sensors in test specimen case to meet the actual test request in different perturbation process.General, can comparatively intensive sensor be set in the front portion of test specimen case, to measure more accurately outstanding related data.
Front portion on the left and right boxboard of casing 1 arranges respectively four probe mounting holes 30, and rear portion is provided with two probe mounting holes 30, the rectangular arrangement of mounting hole of respectively popping one's head in.
As shown in Figure 12 to Figure 15, probe mounting hole 30 is welded with plug 31 near inner chamber one end of casing 1, away from inner chamber one end of casing 1, is combined with the first bolt 32.The arranged outside sound source probe 33 of plug 31, is pressed with spring 34 between sound source probe 33 and the end face of the first bolt 32.On the first bolt 32, be provided with the first axially extending bore 35, in the first axially extending bore 35, be combined with the second bolt 36, on the second bolt 36, be provided with the second axially extending bore 37, in the second axially extending bore 37, be provided with steel pipe 64, the steel pipe 64 of the external wire 62 of sound source probe 33 from the first axially extending bore 35 and the second axially extending bore 37 picks out.
The first axially extending bore 35 comprises taper hole 35a, and the aperture of taper hole 35a diminishes gradually along the direction near casing 1 inner chamber.In the first axially extending bore 35, be positioned at the outside that taper hole 35a place is provided with cutting ferrule 38, the second bolts 36 and is arranged on cutting ferrule 38.Cutting ferrule 38 adopts flexible material, and its front end is coniform, and tapering is less than the tapering of taper hole 35a.Therefore, when screwing the second bolt 36, the front end of cutting ferrule 38 is oppressed and is out of shape, thereby clamps the external wire 62 of sound source probe 33; When unclamping the second bolt 36, cutting ferrule 38 automatically reverts to original shape, thus the convenient sound source probe 33 that takes out.
In the present embodiment, when unclamping the second bolt 36, in order to make the cutting ferrule 38 can better reinstatement, cutting ferrule 38 adopts 9 chromium 18 molybdenum stainless steels, and the front end edge of cutting ferrule 38 is axially provided with three open slot 38a, and open slot 38a is uniform at circumferencial direction.
As shown in Figure 16 to 18, frame 200 comprises base 20, is fixed with left column 21 and right column 22 on base 20, and the upper end of left column 21 and right column 22 is fixed with crossbeam 23.Base 20, left column 21, right column 22 and crossbeam 23 are case structure, are all arranged at intervals with multiple stiffening plates 51 in it.
The rear end of base 20 is fixedly connected with and adds seat 26, adds seat and is provided with on 26 with X to the quantity of depression bar 8 and the corresponding X in position to pressurized cylinder 27.
As shown in Figure 19 to 22, this pilot system also comprises the reaction frame 63 that can be fixedly connected with the front portion of base 20.The rear portion of reaction frame 63 is provided with the first opening 43 that can be relative with aspis 9.The rear portion of reaction frame 63 is fixedly connected with doorframe 52, and doorframe 52 is provided with second opening 53 relative with described the first opening 43.Corresponding the second opening 53 places of doorframe 52 are provided with can shutoff aspis 9 and left sliding door 39 and the right sliding door 40 of the second opening 53, and left sliding door 39 is connected with left cylinder 41, and right sliding door 40 is connected with right cylinder 42.
All and between doorframe 52, be provided with the first roller 49, two sides up and down of left sliding door 39 and right sliding door 40 all and between doorframe 52, be provided with the second roller 50 at two positions up and down of the front shop front of left sliding door 39 and right sliding door 40.
The second opening 53 is step-like, and doorframe 52 is fixedly connected with the first baffle plate 60 at the second opening 53 near the endoporus of reaction frame 63 1 sides, is fixedly connected with second baffle 61 on the cascaded surface away from reaction frame 63 1 sides.The first roller 49 is arranged between the first baffle plate 60 and doorframe 52, and the second roller 50 arranges between second baffle 61 and doorframe 52.Second baffle 61 is fitted in left sliding door 39 and right sliding door 40 on doorframe 52 simultaneously.The face of cylinder of the first roller 49 contacts with left sliding door 39 or right sliding door 40 with doorframe 52; The face of cylinder of the second roller 50 with doorframe 52 with left sliding door 39 or there is sliding door 40 to contact.
On the right opposite of left sliding door 39 and right sliding door 40, be respectively arranged with left seal pad 44 and right seal pad 45, outstanding cover 10 ends relative with right sliding door 40 with left sliding door 39 are provided with the second O-ring seal 46.
Between test specimen case 100 and base 20, Rolling base is set, Rolling base comprises the rolling seat 3 being fixedly connected with base 20 and is arranged at the rolling body 65 rolling in seat 3.
In the time of need to doing experiment, operation according to the following steps:
(1) complete moulding and the assembling of test specimen case 100 interior coal petrographys, and the connection of each sensor and circuit; Interior plug 54 is joined with tracheae, and tracheae is connected with vacuum pump and gas cylinder, is provided with T-valve on tracheae;
(2) utilize movable base 300 that test specimen case is sent into Rolling base, then test specimen case is pushed into preposition;
(3) log-on data acquisition system, gathers the gas pressure in test specimen case before on-test, stress of coal seam and coal temperature;
(4) degassed: keep X to the pressurized cylinder pressure stability of, Y-direction and Z-direction in predetermined force value, check the impermeability of test specimen case, carry out degassedly with vacuum pump, the degassed time determines according to moulding coal petrography intensity, but at least degassed 24h, to guarantee good degasifying effect;
(5) inflation: keep X constant to the pressurized cylinder pressure of, Y-direction and Z-direction, switch three-way valve, fills gas by tracheae to moulding coal petrography, 48h is so that coal petrography adsorption gas reaches equilibrium state in inflation;
(6) outstanding: the left sliding door and the right sliding door that utilize left cylinder and right cylinder to throw open aspis place are given prominence to; Gas pressure, stress of coal seam and the coal temperature of whole process to test specimen case inside carries out free of discontinuities measurement.
In other embodiment, the gas being filled with can be one of methane, carbon dioxide, helium, nitrogen or its mixed gas; Also can carry out the test of rock burst process simulation.
In the present embodiment, the travelling car of described movable base 300 for being fixedly connected with the front end of base 20, the bottom of travelling car is provided with roller, and the rear and front end of bottom is provided with runners.The top of travelling car is provided with rolling body, and the rear of rolling body is provided with hydraulic cylinder, can utilize hydraulic cylinder that test specimen case is pushed on base 20 from rolling body.
In the present embodiment, four pressurized cylinder of Z-direction are evenly distributed in plane on test specimen case, can load simultaneously, also can load respectively, and for coal rock layer different pressures in imitation specimen case, coal seam pressure reaches as high as 10MPa; Four pressurized cylinder of Y-direction are evenly distributed in test specimen case right flank, also can load simultaneously, can load respectively, and for coal rock layer different pressures in imitation specimen case, coal seam pressure reaches as high as 10MPa; X is the coal seam pressure simulation that completes 10MPa with a 200T hydraulic cylinder to loading.Frame 200 is designed to three-dimensional 500T rigidity, the rigidity requirement in the time of can meeting test completely.
In the present embodiment, acoustic emission positioning system can be carried out the acoustic emission propagation attenuation mechanism research in the dynamic disaster process of colliery, for coal and gas outbursts Prediction provide basis;
The 16CHs SAMOS System Acoustic Emission Testing System of sound source probe access U.S. physical acoustics company (physical acoustics corporation), thereby form acoustic emission positioning system, this system positions the acoustic emission signal of coal and rock in the dynamic disaster process of colliery being destroyed to fracture generation, can realize the visual reproduction of temporal-spatial evolution phenomenon that coal and rock in the dynamic disaster process of colliery is broken; The space-time location of the acoustic emission signal that acoustic emission positioning system draws will for colliery dynamic disaster evolution, particularly coal petrography and Gas Outburst Void Formation and coal petrography and Gas Outburst evolution provide direct data, studied the evolution of the spatial shape of hole, for the research of coal and gas outburst mechanism provides approximate on-the-spot actual parameter support reliably.
In the present embodiment, aspect coal and Gas Outburst simulation, by overall process gas pressure, measure, can realize vacuumizing, inflate, give prominence to the monitoring of the gas pressure in different coal bodies position in stress-relief process, analyze under the conditions such as different ladder loads, different coal petrography physico mechanical characteristics, vacuumize with gas replenishment process in coal body in gas pressure distribute, and then obtain vacuumizing with gas replenishment process in the mobile direction of coal-bed gas and speed and with the relation of load distribution, coal petrography physico-mechanical properties; Before analysis coal and Gas Outburst, coal-bed gas pressure changes, thereby analyzes the desorption state of outstanding front gas; Analyze the gas pressure variation of coal seam diverse location in coal and Gas Outburst and the relation of time, for the formation mechanism of understanding Coal and Gas Outburst Cavern provides support.
By overall process temperature survey, the temperature variation in the time of can obtaining vacuumizing gas desorption and inflation in gas adsorption process and the relation between each factor; Analyze temperature variation characteristic outstanding and the front coal and rock of rock burst, for dynamic disaster prediction in colliery provides basis; Explore the variation that front and back coal temperature occurs colliery dynamic disaster; On the above basis of analyzing, inquire into the action rule of temperature to colliery dynamic disaster.
By omnidistance coal and rock stress monitoring, can analysis project disturbance under coal and rock stress distribution and and each factor between relation; Analyzing the stress of the disrumpent feelings front coal body of coal and rock concentrates situation and the disrumpent feelings rear concentrated stress of coal body toward interior shifting rule.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art just can design according to the present invention make many modifications and variations without creative work.Therefore, all technician in the art, all should be in by the determined protection domain of claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (2)
1. more than a coupling colliery dynamic disaster large scale mock up test reaction frame, is characterized in that: comprise base plate (66); On described base plate (66), be provided with multiple bolt connecting holes (67); The rear portion of described base plate (66) is provided with riser (68); On described riser (68), be provided with the first opening (43); The rear portion of described riser (68) is fixedly connected with doorframe (52); On described doorframe (52), be provided with second opening (53) relative with described the first opening (43); Corresponding described the second opening of described doorframe (52) (53) locate to be provided with can shutoff described in left sliding door (39) and the right sliding door (40) of the second opening (53); Described left sliding door (39) is connected with left cylinder (41); Described right sliding door (40) is connected with right cylinder (42);
Two positions up and down of the front shop front of described left sliding door (39) and right sliding door (40) all and between described doorframe (52), be provided with the first roller (49); Two sides up and down of described left sliding door (39) and right sliding door (40) all and between described doorframe (52), be provided with the second roller (50);
On the right opposite of described left sliding door (39) and right sliding door (40), be respectively arranged with left seal pad (44) and right seal pad (45).
2. many coupling colliery dynamic disaster large scale mock up test reaction frames as claimed in claim 1, is characterized in that: the left side of described base plate (66) is fixed with the first left stiffening plate (68) and the second left stiffening plate (69); Described the first left stiffening plate (68) and the second left stiffening plate (69) and described riser (67) form right angle triangular structure; The right side of described base plate (66) is fixed with the first right stiffening plate (70) and the second right stiffening plate (71); Described the first right stiffening plate (70) and the second right stiffening plate (71) and described riser (67) form right angle triangular structure.
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| CN201210082377.7A CN102621233B (en) | 2012-03-27 | 2012-03-27 | Large simulation test counter-force rack for multi field coupling coal mine dynamic disaster |
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| CN201210082377.7A CN102621233B (en) | 2012-03-27 | 2012-03-27 | Large simulation test counter-force rack for multi field coupling coal mine dynamic disaster |
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| CN102243223A (en) * | 2011-04-22 | 2011-11-16 | 河南理工大学 | Coal rock gas dynamic disaster simulation device |
| CN202101910U (en) * | 2011-06-10 | 2012-01-04 | 中国矿业大学 | Triaxial impact dynamic load and dead load combined tester |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243223A (en) * | 2011-04-22 | 2011-11-16 | 河南理工大学 | Coal rock gas dynamic disaster simulation device |
| CN202101910U (en) * | 2011-06-10 | 2012-01-04 | 中国矿业大学 | Triaxial impact dynamic load and dead load combined tester |
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