CN205720213U - Coal mine gas dynamic disaster analogue experiment installation under simulated environment - Google Patents

Abstract

The utility model discloses coal mine gas dynamic disaster analogue experiment installation under a kind of simulated environment, including loading frame, loading frame is provided with beche and two Z-direction loading hydraulic cylinders, and connecting between the piston rod bottom of two Z-direction loading hydraulic cylinders has Z-direction load plate；Connect bottom loading frame and have Y-direction guide rail and X direction guiding rail；Y-direction railcar is provided with prominent cylinder body and Y-direction loading hydraulic cylinder, and X is provided with X to loading hydraulic cylinder to railcar；Prominent cylinder body top is upwards provided with Z-direction load ports, and prominent cylinder side wall connects to have and offers aspis to cylinder, X to cylinder upper surface along Y-direction cylinder and X；X connects to cylinder the 4th pipeline of open ended；Prominent cylinder body connects pumped vacuum systems and gas loading system.The invention also discloses the experimental technique using said apparatus, it is possible to simulation coal mine rock burst, gas flow field, rock stratum crustal stress and horizontal structural s tress, improve the fidelity of experiment, improve experiment success rate and order of accuarcy.

Description

Coal mine gas dynamic disaster analogue experiment installation under simulated environment

Technical field

This utility model relates to coal mine gas dynamic disaster analogue experiment installation under a kind of simulated environment, particularly relates to simulation The experimental provision of the prominent process of bump induction.

Background technology

Coal and gas prominent is a kind of extremely serious Accidents Disasters during coal production, but coal and gas prominent occurs Mechanism never final conclusion, at present still in hypothesis interpretation phase.

At present, main hypothesis has gas effect hypothesis, crustal stress effect hypothesis, chemical nature effect hypothesis and comprehensive Effect hypothesis etc., the hypothesis backer that comprehensive function causes coal and gas prominent at present is more.

Comprehensive function hypothesis is thought in Mine Production, and mining work activities causes crustal stress suffered by coal seam and coal-bed gas Pressure change breaks poised state originally, and conclusively stress, gas pressure and other correlative factor comprehensive functions cause coal Rock mass failure instability, thus there is coal and gas prominent disaster.

Data statistics data shows, most prominent generation is being blown out and in getter program process, is being exactly specifically Most coal and gas prominent be all owing to blowing out, the factor such as seismic wave and roof caving cause the shock loading to coal and rock Induction causes.Therefore coal and gas prominent protrusion phenomenon is simulated experimentation, shock loading cannot be avoided Risk factor.

Although Chinese scholars is done a lot of work in terms of coal and gas prominent similar material simulation device and takes Obtained many achievements, but the analogue experiment installation developed there is also some problems and deficiency:

1) lateral load can not be applied and carry out dummy level tectonic stress.True coal body mainly includes hanging down at stress suffered by down-hole Nogata is to overlying rock crustal stress, horizontal direction tectonic stress and coal-bed gas pore pressure.Most simulations are prominent real Experiment device can only realize vertical stress and loads and supply certain gas pressure, it is impossible to realize side direction horizontal loaded load.

2) can not realize simulating the prominent process of shock loading induction.The factors such as downhole blasting, seismic wave and roof caving The bump caused is the main cause that induction is prominent, and most highlighting is to there occurs in this case, but the biggest portion Divide experimental provision to consider the stress effect of outer load, be all to be realized by the method that experiment coal sample is carried out static pressure loading, it is impossible to The dual function of simulation coal and rock the static pressure load born and the load that withstands shocks, can not simultaneously take account of in simulation experiment and bear Static pressure load and shock loading cause unstable failure both factors.

3) data statistics is except stone door punching coal, and the coal and gas prominent accident generation of 76% is in heading.Namely Saying, most coal and gas prominent all occurs after coal seam has been exposed to digging space, and coal-bed gas now is not In primitive coalbed gas pressure, release is also flowed, and there is gas flow field.And current coal and gas prominent simulation is real Experiment device can only carry out prominent experiment under the conditions of coal body is in confined space, it is impossible to carries out gas under Gas-Flow field condition and dashes forward Go out simulation experiment.

4) the most structure of equipment is complicated at present, and handling coal sample trouble, experimental period, long efficiency was low.

Utility model content

The purpose of this utility model is to provide one can simulate coal mine rock burst, gas flow field, answer rock stratum The coal mine gas dynamic disaster analogue experiment installation of power and horizontal structural s tress, makes experimental situation more fit the reality in colliery Environmental condition, make experimental result more accurately, have more directive function.

For achieving the above object, coal mine gas dynamic disaster analogue experiment installation under simulated environment of the present utility model, with In horizontal direction orthogonal both direction be respectively X to and Y-direction, with vertical direction as Z-direction；

This utility model includes that loading frame, loading frame include that four root posts, the horizontal cross-section of four root posts just surround Square；It is fixedly connected with beche installing rack between four root post tops, beche installing rack is provided with beche；Beche It is fixedly connected with hydraulic cylinder installing rack between described four root posts below installing rack, hydraulic cylinder installing rack is interval with two Z-direction loading hydraulic cylinder, the piston rod of two Z-direction loading hydraulic cylinders extends downwardly from hydraulic cylinder installing rack, two Z-direction loading hydraulic cylinders Piston rod bottom between be fixedly connected with horizontally disposed Z-direction load plate；

The center of the hydraulic cylinder installing rack between two Z-direction loading hydraulic cylinders is provided with the vertical through holes of up/down perforation, The extension bar slide downward of beche is through described vertical through holes and just to described Z-direction load plate；

Be fixedly connected with plummer bottom described loading frame, plummer be fixedly connected with along Y-direction arrange Y-direction underframe and Along X to the X arranged to underframe；

Plummer and Y-direction underframe are provided with Y-direction guide rail, and X is provided with X direction guiding rail to underframe；Y-direction guide rail is provided with Y-direction rail Road car, X direction guiding rail is provided with X to railcar, and Y-direction railcar is provided with prominent cylinder body and Y-direction loading hydraulic cylinder, and X is to railcar It is provided with X to loading hydraulic cylinder；

It is sliding that prominent cylinder body top is upwards provided with the prominent inboard wall of cylinder block at Z-direction load ports, Z-direction load plate and Z-direction load ports Movable sealing connects；Prominent cylinder side wall connects the Y-direction cylinder arranged along Y-direction, and the piston rod of Y-direction loading hydraulic cylinder stretches into Y-direction Cylinder connection have Y-direction load plate, Y-direction load plate to be connected with Y-direction cylinder slipper seal；The sidewall of prominent cylinder body removably connects Having X to cylinder, X is fixedly connected on X in railcar to cylinder, and X stretches into X to the piston rod of loading hydraulic cylinder and to cylinder and connects X is had to be connected to cylinder slipper seal with X to load plate to load plate, X；X closes on X table on the end of loading hydraulic cylinder to cylinder Face offers aspis；X between described aspis with prominent cylinder body is connected to cylinder has the 4th pipeline, the 4th pipeline to be provided with 3rd Pressure gauge, the 4th valve and effusion meter；4th line end is uncovered；

Along Y-direction guide rail, prominent cylinder body has experimental site and position of coalingging, and prominent cylinder body is positioned at Z-direction when experimental site The underface of load plate, prominent cylinder body is positioned at outside loading frame when coalingging position；Prominent cylinder body connects pumped vacuum systems With gas loading system.

Described prominent cylinder body and X are detachably connected by flange arrangement between cylinder.

Described Y-direction railcar and X are equipped with brake gear to railcar.

Described gas loading system includes high pressure gas tank, and high pressure gas tank is connected by the first valve the first pipeline, Along the gas flow direction in the first pipeline, the first pipeline is sequentially provided with air relief valve, the first Pressure gauge and the second valve；

Described pumped vacuum systems includes vacuum pump, and vacuum pump connects has the second pipeline, the second pipeline to be provided with the 3rd valve；

Prominent cylinder body connects has the 3rd pipeline, the 3rd pipeline to be provided with the second Pressure gauge；3rd pipeline connects three-way valve, Three interfaces of described three-way valve connect the first pipeline, the second pipeline and the 3rd pipeline respectively.

Device and method of the present utility model has the advantage that

Beche in this utility model can apply shock loading to coal sample, thus simulates coal mine rock burst；This reality Gas flow field (the Gas phenomenon that i.e. simulation coal seam has), this practicality can be simulated with four valves 19 in novel after opening Two Z-direction loading hydraulic cylinders in novel can simulate rock stratum crustal stress, and the X in this utility model is to loading hydraulic cylinder and Y Can be from the horizontal structural s tress of two mutually orthogonal direction simulation coal seam complexity to loading hydraulic cylinder, so that this practicality is new Type can simulate the actual environment condition in colliery more truly, improves experiment success rate and order of accuarcy, has more guidance work With.

This utility model can be to testing coal sample three directions (horizontal X, Y-direction and vertical Z by the way of static pressure loads Direction) above apply predetermined dead-load stress, rock stratum weight stress and horizontal structural s tress combination condition above simulation coal seam Under carry out coal and gas prominent simulation experiment；And can vertical direction to loaded coal sample give certain energy power punching Hit load, carry out the bump that in simulated field production process, the factor such as downhole blasting, seismic wave and roof caving causes, right The process simulation experimentation that bump induction is prominent.

This utility model arranges gas loading system, and gas can be made to flow out by the 4th pipeline, constitutes Gas-Flow A dynamic path, it is ensured that experiment is to carry out during Gas Flow, there is gas flow field rather than confined space, this with Occur prominent situation to more conform to during true coal seam digging, improve the emulator of experiment, improve experiment success rate and accurate journey Degree.

Additionally, this utility model is in the case of testing unsuccessful (coal and gas prominent does not occurs), it is not necessary to again enter Row airtight test, it is not necessary to recharge coal sample, it is only necessary to again coal sample is applied static pressure in three directions (X, Y, Z-direction) Load, can test again.The most only need to repeat the 3rd to the 8th step, it is not necessary to perform the first and second steps Suddenly, it has been achieved in that the function quickly repeating experiment of " fill a coal sample and do repeatedly prominent experiment ", has improved the use of equipment Efficiency, shortens experimental period, improves conventional efficient.

Accompanying drawing explanation

Fig. 1 is that prominent cylinder body is positioned at structural representation of the present utility model when coalingging position；

Fig. 2 is left view schematic diagram of the present utility model；

Fig. 3 is that prominent cylinder body is positioned at schematic top plan view of the present utility model during experimental site；

Fig. 4 is the schematic top plan view that prominent cylinder body, X combine to cylinder, Y-direction cylinder.

Detailed description of the invention

This is as in utility model, with both direction orthogonal in horizontal direction be respectively X to and Y-direction, with the most just To for Z-direction.

As shown in Figures 1 to 4, under simulated environment of the present utility model, coal mine gas dynamic disaster analogue experiment installation includes Loading frame 1, loading frame 1 includes that four root posts, the horizontal cross-section of four root posts surround square；Between four root post tops It is fixedly connected with beche installing rack 2, beche installing rack 2 is provided with beche 3；Described below beche installing rack 2 It is fixedly connected with hydraulic cylinder installing rack 4 between four root posts, hydraulic cylinder installing rack 4 is interval with two Z-direction loading hydraulic cylinders 5, the piston rod of two Z-direction loading hydraulic cylinders 5 extends downwardly from hydraulic cylinder installing rack 4, the piston rod of two Z-direction loading hydraulic cylinders 5 Bottom between be fixedly connected with horizontally disposed Z-direction load plate 6；

The center of the hydraulic cylinder installing rack 4 between two Z-direction loading hydraulic cylinders 5 is provided with the vertical logical of up/down perforation Hole, the extension bar slide downward of beche 3 is through described vertical through holes and just to described Z-direction load plate 6；

Being fixedly connected with plummer 7 bottom described loading frame 1, plummer 7 is fixedly connected with along at the bottom of the Y-direction of Y-direction setting Frame 8 and along X to arrange X to underframe 9；

Plummer 7 and Y-direction underframe 8 are provided with Y-direction guide rail 10, and X is provided with X direction guiding rail 11 to underframe 9；On Y-direction guide rail 10 Being provided with Y-direction railcar 12, X direction guiding rail 11 is provided with X to railcar 13, and Y-direction railcar 12 is provided with prominent cylinder body 14 and Y-direction adds Carrier fluid cylinder pressure 15, X is provided with X to loading hydraulic cylinder 16 to railcar 13；

Prominent cylinder body 14 top is upwards provided with Z-direction load ports 17, the prominent cylinder body at Z-direction load plate 6 and Z-direction load ports 17 14 inwall slipper seals connect；Prominent cylinder body 14 sidewall connects the Y-direction cylinder 18 arranged along Y-direction, Y-direction loading hydraulic cylinder 15 Piston rod stretch into Y-direction cylinder 18 and connect have Y-direction load plate 19, Y-direction load plate 19 to be connected with Y-direction cylinder 18 slipper seal； The sidewall of prominent cylinder body 14 is removably connected with X to cylinder 20, and X is fixedly connected on X in railcar 13 to cylinder 20, and X is to adding The piston rod of carrier fluid cylinder pressure 16 stretches into X has X to slide to cylinder 20 with X to load plate 21 to load plate 21, X to cylinder 20 connection It is tightly connected；X closes on X to cylinder 20 and offers aspis 22 to the end upper surface of loading hydraulic cylinder 16；Described aspis 22 Being connected to cylinder 20 with the X between prominent cylinder body 14 and have the 4th pipeline 23, the 4th pipeline 23 is provided with the 3rd Pressure gauge the 24, the 4th Valve 25 and effusion meter 26；4th pipeline 23 open ended；

Along Y-direction guide rail 10, prominent cylinder body 14 has experimental site and position of coalingging, prominent cylinder body 14 position when experimental site In the underface of Z-direction load plate 6, prominent cylinder body 14 is positioned at outside loading frame 1 when coalingging position；Prominent cylinder body 14 connects to be had Pumped vacuum systems and gas loading system.

Wherein, Z-direction loading hydraulic cylinder 5 is used for applying Z-direction power and simulating vertically stress, and X is to loading hydraulic cylinder 16 and Y-direction Loading hydraulic cylinder 15 applies horizontal force and for dummy level tectonic stress.

Described prominent cylinder body 14 and X is detachably connected by flange arrangement between cylinder 20.Described Y-direction track Car 12 and X is equipped with brake gear to railcar 13, it is possible to start brake gear when experiment, railcar is fixed on guide rail On.Brake gear is routine techniques, not shown.

Described gas loading system includes high pressure gas tank 30, and high pressure gas tank 30 is connected by the first valve 31 first Pipeline 32, along the gas flow direction in the first pipeline 32, the first pipeline 32 is sequentially provided with air relief valve the 33, first Pressure gauge 34 and Second valve 35；

Described pumped vacuum systems includes vacuum pump 36, and vacuum pump 36 connects has the second pipeline 37, the second pipeline 37 to be provided with 3rd valve 38；

Prominent cylinder body 14 connects has the 3rd pipeline 39, the 3rd pipeline 39 to be provided with the second Pressure gauge 40；3rd pipeline 39 is even Being connected to three-way valve 41, three interfaces of described three-way valve 41 connect the first pipeline the 32, second pipeline 37 and the 3rd pipeline 39 respectively.

This utility model can be supporting data monitoring and acquisition system, the shock loading energy of the prominent process of omnidistance record Amount, the data such as size of the stress in three directions and gas pore pressure, carry out facing of the various combinations that real time record causes highlighting Boundary's condition.

The invention also discloses and use the reality of coal mine gas dynamic disaster analogue experiment installation under above-mentioned simulated environment Proved recipe method, sequentially includes the following steps: successively

One, this step is by airtight test, including following sub-step: 1. make first valve the 31, second valve 35, Three valves 38 and the 4th valve 25 are closed；

Make Y-direction railcar 12 drive prominent cylinder body 14 to the experimental site of prominent cylinder body 14 the most again, then start Y-direction and load Hydraulic cylinder 15, X are to loading hydraulic cylinder 16 and Z-direction loading hydraulic cylinder 5, so that Y-direction load plate 19 stretches into Y-direction cylinder 18 and Y Connect to cylinder 18 slipper seal, make X stretch into X to load plate 21 to be connected to cylinder 20 slipper seal and make Z to cylinder 20 and with X It is connected with the prominent cylinder body 14 inwall slipper seal at Z-direction load ports 17 to load plate 6；

The most then open the second valve 35 and the first valve 31, in making prominent cylinder body 14, be filled with methane gas；

The most finally close the second valve 35 and the first valve 31, observe the reading of the second Pressure gauge 40 to determine prominent cylinder body 14 and the air-tightness of pipeline that connected.As there is gas leak phenomenon, then check air leakage point and carry out leak stopping process, being then back to Perform the of this step the 3. sub-step；Observe the air-tightness of container by Pressure gauge and check air leakage point and carry out at leak stopping Reason, is the conventional technical ability of those skilled in the art, the most no longer describes in detail.

If prominent cylinder body 14 and the pipeline connected thereof have air-tightness, then perform second step；

Two, this step is powder of coalingging, and is loaded by the granule coal dust sieved within highlighting cylinder body 14 by three entrances, bag Include following three sub-step:

1. Z-direction load ports 17 is coaling powder, is dismantled to cylinder 20 by X and come, by Y-direction railcar 12 from prominent cylinder body 14 Prominent cylinder body 14 is pulled out along Y-direction guide rail 10, and the piston rod controlling two Z-direction loading hydraulic cylinders 5 moves upward, and Z-direction is added Support plate 6 is extracted out from Z-direction load ports 17, is loaded by Z-direction load ports 17 by major part experiment coal dust；

2. Y-direction cylinder 18 is coaling powder, controls Y-direction loading hydraulic cylinder 15 and extracts Y-direction load plate 19 out Y-direction cylinder 18, then Coal dust is loaded to Y-direction cylinder 18；

3. aspis 22 is coaling powder, by Y-direction railcar 12, along Y-direction guide rail 10, prominent cylinder body 14 is sent into loading frame 1 To experimental site；X is linked together by flange arrangement with prominent cylinder body 14 to cylinder 20, then controls X to adding load hydraulic Cylinder 16 makes X stretch into X to load plate 21 to cylinder 20 and to be positioned at outside aspis 22 and (with the direction near prominent cylinder body 14 to be To, it is reversed extroversion), coaling powder to cylinder 20 to X by aspis 22；The coal dust that X loads in cylinder 20 is used for simulating now The coal body thickness in prominent front, field；

In this step the 1. with the 2. sub-step order in no particular order, the 3. sub-step the 1. with the 2. sub-step after Carry out；

Three, this step is that coal dust is pressed into moulded coal coal sample 42, specifically controls X to loading hydraulic cylinder 16 so that it is piston rod Promote X, to load plate 21, X coal dust in cylinder 20 is applied X to horizontal pressure force；Control Y-direction loading hydraulic cylinder 15 so that it is live Stopper rod promotes Y-direction load plate 19 that the coal dust in Y-direction cylinder 18 is applied Y-direction horizontal pressure force；Control two described Z-directions and add load hydraulic Cylinder 5 so that it is piston rod promotes the Z-direction load plate 6 coal dust to highlighting at Z-direction load ports 17 in cylinder body 14 to apply Z-direction pressure；X to Loading hydraulic cylinder 16, Y-direction loading hydraulic cylinder 15 and Z-direction loading hydraulic cylinder 5 jointly apply static pressure load to coal dust and are pressed into by coal dust Moulded coal coal sample 42；

Four, this step is evacuation；All devices are all installed after connection puts in place, it is ensured that all valves are in closedown shape State, opens the 3rd valve 38, utilizes vacuum pump 36 that coal sample 42 is carried out evacuation process.After evacuation, close vacuum pump 36 He 3rd valve 38.

Five, this step is to make coal sample 42 adsorption gas；

Opening the first valve 31 and the second valve 35, high pressure gas tank 30 is filled with methane gas in coal sample 42, leads to simultaneously Cross air relief valve 33 and control the pressure of the methane gas being filled with in coal sample 42；Coal sample 42 is made to fill under the conditions of predetermined gas pressure Divide absorption, and make coal sample 42 reach the state of adsorption-desorption balance；The pressure that the gas being filled with in coal sample 42 in this step is formed Power simulation methane gas pore pressure；

Six, this step is that coal sample 42 is applied static pressure load, proceeds as follows successively:

Keep the first valve 31 and the second valve 35 to be in opening, open the 4th valve 2519 simulated field gas certainly So gush out process, regulate the open degree of the 4th valve 2519 according to the reading of effusion meter 2620, Gas speed is regulated extremely Predetermined speed；Then keep X motionless to loading hydraulic cylinder 16 and Y-direction loading hydraulic cylinder 15, control said two Z-direction and add load hydraulic Cylinder 5 applies Z-direction load by Z-direction load plate 6 and stops after specifying load coal sample 42；

Control Y-direction loading hydraulic cylinder 15 again by Y-direction load plate 19, coal sample 42 to apply Y-direction load and stop after appointment load Only, control X simultaneously and coal sample 42 is applied X to load to specify load after stopping by X to load plate 21 to loading hydraulic cylinder 16；

Now, the horizontal pressure force dummy level structure that coal sample 42 is applied by X to loading hydraulic cylinder 16 and Y-direction loading hydraulic cylinder 15 Making stress, the Z-direction that coal sample 42 applies is defeated and is simulated vertically stress by Z-direction loading hydraulic cylinder 5；

Seven, X is controlled to loading hydraulic cylinder 16 so that it is piston rod drives X to move out outside aspis 22 to load plate 21 Side, now coal sample 42 connects with aspis 22 thus opens aspis 22；If there is coal and gas after Lian Tong at aspis 22 Protrusion phenomenon, then Success in Experiment, the vertically stress simulated in this experiment, horizontal structural s tress, methane gas Pore Pressure Power is exactly to exist to cause prominent marginal value under Gas phenomenon；If there is not coal and gas prominent phenomenon, then carry out Eight steps；

Eight, there is not coal and gas prominent phenomenon, show, under current Gas process condition, to be applied at present Static pressure load and gas pressure are not up to inrush critical value；Now operation beche 3(i.e. Z-direction dynamic pressure charger) make it Fall and impact Z-direction load plate 6, thus apply shock loading to experiment coal sample 42, observe whether have at aspis 22 coal with watt This protrusion phenomenon occurs；If it occur that protrusion phenomenon, then Success in Experiment, the vertically stress simulated in this experiment, level Tectonic stress, methane gas pore pressure and shock loading (energy being had) are exactly to exist to cause under Gas phenomenon Prominent marginal value；If there is not coal and gas prominent phenomenon, then carry out the 9th step；

Nine, X is controlled to loading hydraulic cylinder 16 so that it is X is again pushed in aspis 22 by piston rod to load plate 21 Side, thus close aspis 22；Repeat the 3rd to the 8th step, and in the 6th step, control X to loading hydraulic cylinder 16, Y-direction The pressure that coal sample 42 is applied by loading hydraulic cylinder 15 and two Z-direction loading hydraulic cylinders 5, thus change the vertically stress simulated And horizontal structural s tress；And in the 5th step, regulate air relief valve 33, thus regulate simulated methane gas pore pressure；Weight Multiple 3rd to the 8th step, until there is coal and gas prominent phenomenon in the 7th or the 8th step, obtaining there is gas accordingly and gushing Occur as the marginal value that lower initiation is prominent.

In described 5th step, it is judged that coal sample 42 reaches the method for adsorption-desorption balance and comprises following three sub-step: 1. After coal sample 42 adsorption gas 12 hours, close the second valve 35, then after waiting 2 hours, if the second Pressure gauge 40 and The reading of three Pressure gauges 24 is equal, then show that coal sample 42 has reached adsorption-desorption balance；If 2. the second Pressure gauge 40 and the 3rd The reading of Pressure gauge 24 is unequal, shows that coal sample 42 does not reaches adsorption-desorption balance, then needs to be again turned on the second valve 35, Continuing to be filled with gas in coal sample 42, after 12 hours, (being not necessarily 12 hours, this time interval can also be according to experiment experience Determine) it is again switched off the second valve 35, if the reading of the second Pressure gauge 40 and the 3rd Pressure gauge 24 is equal after waiting 2 hours, Then show that coal sample 42 has reached adsorption-desorption balance；If 3. coal sample 42 has reached adsorption-desorption balance, then carry out the 6th step Suddenly；If being also not up to adsorption-desorption balance, repeat the above-mentioned the 2. sub-step, until coal sample 42 reaches adsorption-desorption poised state.

In described 6th step, open the Y-direction the railcar 12 and X brake gear to railcar 13, fix Y further To railcar 12 and X to railcar 13.

Research and development explanation:

In order to simulate true stress residing for coal seam (vertically stress and horizontal structural s tress) environment, this utility model can Experiment coal sample 42 is realized vertical direction and the loading of horizontal direction upper stress in the way of static pressure loading, and can control Vertical direction impact stress charger (i.e. beche 3) to coal body apply dynamic load(loading), simulate downhole blasting, seismic wave with And the process that the bump induction that causes of the factor such as roof caving is prominent.Stand under load coal sample 42 can be filled with by gas loading system The methane gas of certain pressure, and carry out simulated field send out by arranging the 4th pipeline 23 for venting at X to cylinder 20 Give birth to the proper flow in coal body of the gas before highlighting and gush out.(X is to loading hydraulic cylinder 16 and Y for the hydraulic cylinder of horizontal direction To loading hydraulic cylinder 15) it is fixed in railcar, the hydraulic cylinder (Z-direction loading hydraulic cylinder 5) in vertical direction is fixed on hydraulic cylinder On installing rack 4.During experiment, hydraulic cylinder installing rack 4 provides reaction of bearing, Z-direction loading hydraulic cylinder 5 to pass through Z for Z-direction loading hydraulic cylinder 5 Downwards coal sample 42 is applied vertical static pressure load to load plate 6, under the static pressure load effect of vertical direction, the prominent cylinder body of carrying The Y-direction railcar 12 of 14 is pressed to be positioned on Y-direction guide rail 10.Open Y-direction railcar 12 and X to fill to the brake of railcar 13 Put, thus fixing Y-direction railcar 12 and X is to railcar 13.Control Y-direction load plate 19 by Y-direction loading hydraulic cylinder 15, make Y-direction Load plate 19 is positioned at inner side (now aspis 22 separates, and aspis 22 is closed) or outside (this of aspis 22 with coal sample 42 Time aspis 22 communicate with coal sample 42, aspis 22 is opened), it is possible to realize the repetition of " fill coal sample and do repeatedly prominent experiment " Experiential function.

This utility model can apply in Y-direction maximum static pressure load 5000kN, in the maximum static pressure load that X upwards applies For 1000kN, but X to loading, the speed of unloading want fast, its velocity of displacement 70mm/s can be realized by electro-hydraulic servo control.

Z-direction static pressure load is 20MN to the maximum；The loading of Z-direction dynamic pressure load is realized by beche 3.By regulation hydraulic pressure In cylinder, hydraulic oil rafting speed controls power loading speed and energy output size.

In order to simulate the gas ambient stress residing for coal seam, this utility model device is provided with gas loading system and evacuation System, and the 4th pipeline 23 for venting it is provided with in X position near the aspis 22 of cylinder 20, make experiment in Gas Flow During carry out, there is gas flow field rather than confined space, this occurs with true coal seam mining process prominent situation more to accord with Close, improve the emulator of experiment, improve experiment success rate and order of accuarcy.

It is provided with an aspis 22 at X to cylinder 20, is through specifically controlling X to loading hydraulic cylinder 16 piston The distance that moves forward and backward controls closedown and the opening of aspis 22 indirectly.When Preparatory work of experiment is complete, control X to carrier fluid Cylinder pressure 16 makes X slowly extract out until aspis 22 is opened to load plate 21.If it occur that prominent, Success in Experiment；Without prominent Go out, advance the X piston to loading hydraulic cylinder 16 until aspis 22 is closed, change outer stress and the gas pressure condition of carrying, fully Continue experiment after absorption, thus realize filling a coal sample and repeatedly highlight experiment, greatly improve conventional efficient.

Coal sample can be loaded and unloaded after taking out each load plate easily, coal sample, therefore this practicality at aspis 22, can also be loaded and unloaded Novel handling coal sample is very convenient.

Above example is only in order to illustrative not limiting the technical solution of the utility model, although with reference to above-described embodiment pair This utility model has been described in detail, and it will be understood by those within the art that: still can enter this utility model Row amendment or equivalent, without deviating from any modification or partial replacement of spirit and scope of the present utility model, it all should Contain in the middle of right of the present utility model.

Claims (4)

1. coal mine gas dynamic disaster analogue experiment installation under simulated environment, it is characterised in that: to be mutually perpendicular in horizontal direction Both direction be respectively X to and Y-direction, with vertical direction as Z-direction；

This utility model includes that loading frame, loading frame include that four root posts, the horizontal cross-section of four root posts surround square； It is fixedly connected with beche installing rack between four root post tops, beche installing rack is provided with beche；Beche is installed It is fixedly connected with hydraulic cylinder installing rack between described four root posts below frame, hydraulic cylinder installing rack is interval with two Z-directions Loading hydraulic cylinder, the piston rod of two Z-direction loading hydraulic cylinders extends downwardly from hydraulic cylinder installing rack, two Z-direction loading hydraulic cylinders Horizontally disposed Z-direction load plate it is fixedly connected with between the bottom of piston rod；

The center of the hydraulic cylinder installing rack between two Z-direction loading hydraulic cylinders is provided with the vertical through holes of up/down perforation, pneumatic The extension bar slide downward of hammer is through described vertical through holes and just to described Z-direction load plate；

Being fixedly connected with plummer bottom described loading frame, plummer is fixedly connected with the Y-direction underframe arranged along Y-direction and along X To the X arranged to underframe；

Plummer and Y-direction underframe are provided with Y-direction guide rail, and X is provided with X direction guiding rail to underframe；Y-direction guide rail is provided with Y-direction railcar, X direction guiding rail is provided with X to railcar, and Y-direction railcar is provided with prominent cylinder body and Y-direction loading hydraulic cylinder, and X is provided with to railcar X is to loading hydraulic cylinder；

Prominent cylinder body top is upwards provided with Z-direction load ports, and the prominent inboard wall of cylinder block slip at Z-direction load plate and Z-direction load ports is close Envelope connects；Prominent cylinder side wall connects the Y-direction cylinder arranged along Y-direction, and the piston rod of Y-direction loading hydraulic cylinder stretches into Y-direction cylinder And connection has Y-direction load plate, Y-direction load plate to be connected with Y-direction cylinder slipper seal；The sidewall of prominent cylinder body is removably connected with X To cylinder, X is fixedly connected on X in railcar to cylinder, and X stretches into X to the piston rod of loading hydraulic cylinder has X to cylinder connection To load plate, X is connected to cylinder slipper seal with X to load plate；X closes on the X end upper surface to loading hydraulic cylinder to cylinder Offer aspis；X between described aspis with prominent cylinder body is connected to cylinder the 4th pipeline, and the 4th pipeline is provided with Three Pressure gauges, the 4th valve and effusion meter；4th line end is uncovered；

Along Y-direction guide rail, prominent cylinder body has experimental site and position of coalingging, and prominent cylinder body is positioned at Z-direction and loads when experimental site The underface of plate, prominent cylinder body is positioned at outside loading frame when coalingging position；Prominent cylinder body connect have pumped vacuum systems and watt This loading system.

Coal mine gas dynamic disaster analogue experiment installation under simulated environment the most according to claim 1, it is characterised in that: institute State prominent cylinder body and X is detachably connected by flange arrangement between cylinder.

Coal mine gas dynamic disaster analogue experiment installation under simulated environment the most according to claim 2, it is characterised in that: institute State Y-direction railcar and X is equipped with brake gear to railcar.

4. according to coal mine gas dynamic disaster analogue experiment installation under the simulated environment according to any one of claim 1-3, its It is characterised by:

Described gas loading system includes high pressure gas tank, and high pressure gas tank is connected by the first valve the first pipeline, edge watt This flow direction in the first pipeline, the first pipeline is sequentially provided with air relief valve, the first Pressure gauge and the second valve；

Described pumped vacuum systems includes vacuum pump, and vacuum pump connects has the second pipeline, the second pipeline to be provided with the 3rd valve；

Prominent cylinder body connects has the 3rd pipeline, the 3rd pipeline to be provided with the second Pressure gauge；3rd pipeline connects three-way valve, described Three interfaces of three-way valve connect the first pipeline, the second pipeline and the 3rd pipeline respectively.