CN108489797A - A kind of high inclination-angle coal bearing seams Mechanical Characters of Composite Ground physical analogy and test device - Google Patents

A kind of high inclination-angle coal bearing seams Mechanical Characters of Composite Ground physical analogy and test device Download PDF

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Publication number
CN108489797A
CN108489797A CN201810540752.5A CN201810540752A CN108489797A CN 108489797 A CN108489797 A CN 108489797A CN 201810540752 A CN201810540752 A CN 201810540752A CN 108489797 A CN108489797 A CN 108489797A
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China
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force application
test device
inner frame
application board
composite ground
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CN201810540752.5A
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CN108489797B (en
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解盘石
段建杰
田双奇
罗生虎
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Xian University of Science and Technology
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Xian University of Science and Technology
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02Details
    • G01N3/06Special adaptations of indicating or recording means

Abstract

The invention discloses a kind of high inclination-angle coal bearing seams Mechanical Characters of Composite Ground physical analogy and test devices, including driving wheel and a pair of semicircle turntable of driven wheel support are equipped in support, and driving wheel and driven wheel are connected to the motor;It is respectively equipped with the inner frame vertical beam that inside casing is set a roof beam in place and connected up and down between a pair of of semicircle turntable;It sets a roof beam in place along inside casing and is connected with the removable steel column of several row's parallelly distribute ons on vertical and inner frame vertical beam, each row moves and is connected with the force application board connected by several hydraulic jacks on steel column;The hydraulic jack by moving steel column connection is supported by the force application board front-back of front and rear row, similar materials are filled between adjacent force application board, it is embedded with the pressure sensor for being connected to test device in similar coal rock layer simulation material, similar coal rock layer simulation material stress variation between each force application board obtained by test device, obtains the Mechanical Characters of Composite Ground of simulation coal rock layer.The device can realize three-dimensional varied angle load, more analyze to accurate system coal bearing seams Mechanical Characters of Composite Ground.

Description

A kind of high inclination-angle coal bearing seams Mechanical Characters of Composite Ground physical analogy and test device
Technical field
The present invention relates to a kind of mine seam mining experimental method, especially a kind of high inclination-angle coal bearing seams Mechanical Characters of Composite Ground object Reason simulation and test device.
Background technology
In China, with continually developing for coal resources, large-inclination-angle coal bed equal hard-to-recovery reserves become nowadays so that after The emphasis of coal resources in China exploitation.In the case where mining requires the situation of safety and high efficiency, for physical simulation Study on Coal The stability of rock mass produces great demand, and physical simulation experiment is that the actual zoom model in scene is placed in experiment body It is interior, real processes main feature is simulated, the rule between certain tittle obtained by the experiment on model pushes back prototype again On, to obtain the experimental method to the regularity cognition of prototype.Experiment exceeds existing teachings, and the scene of capable of studying does not allow The project with indeterminacy rule is tested or do not observed, mathematically indeterminable problem can be explored, it can be apparent It intuitively embodies and imagines, can effectively help to conceive, reflect physical essence to the maximum extent, therefore be mine, ground, geology One of equal subjects important research means.
With being constantly progressive for coal mining and Detection Techniques, people gradually recognize the mechanical character of surrounding rock of different directions Equally the stability of country rock is had a major impact, there are many mining circle scholars to propose different hypothesis and the sight by demonstration Point, such as " maximum horizontal stress is theoretical ", but at us when doing physical simulation, vertical stress is only considered mostly to lane The stability influence of road roof and floor, few people consider influence of the stress loading characteristic of different directions to surrounding rock stability, This is a urgent problem.For the mine that some ocurrences of coal seam are poor, in the progradation for excavating tunnel or working face In, mine pressure shows more serious, some mine disasters, such as impulsion pressure, top plate large area often occur to press, are all people For coal rock layer Mechanical Characters of Composite Ground Scientific Cognition be short of, do not accomplish the prediction and prevention of science, cause a large amount of personnel and Equipment damage produces huge economic loss, so can intuitively simulate exploitation and excavation by physical simulation experiment Whole process, when doing simulated experiment, researcher focuses more on influence of the overlying rock to face surrounding rock stability, needs more Mechanical Characters of Composite Ground between the Study of Strata that refinement causes and inside rock stratum, also waits improving, office to the simulation of partial 3 d concentrated stress It being studied when portion region, mining circle scholars only study the mechanical characteristics of sillar mostly, lack the research to entire rock mass and cognition, When to research mine disaster damage, the research of the Mechanical Characters of Composite Ground of rock stratum seems even more important for predicting and preventing mine disaster, The problem of Mechanical Characters of Composite Ground of Study of Strata and rock mass is physical simulation experiment urgent need to resolve.
Invention content
To solve drawbacks described above existing in the prior art, the purpose of the present invention is to provide a kind of high inclination-angle coal bearing seams Mechanical Characters of Composite Ground physical analogy and test device, the device can realize the load of three-dimensional varied angle, can preferably simulate between rock stratum With the interaction inside rock stratum, such as:Skid force, concentration of local stress between rock stratum, can make whole simulator varied angle, The coal petrography occurrence status of accurate simulation different angle, by a kind of test method of science, which can more accurate, system Analyze coal bearing seams Mechanical Characters of Composite Ground in ground.
The present invention is realized by following technical proposals.
A kind of high inclination-angle coal bearing seams Mechanical Characters of Composite Ground physical analogy and test device include a pedestal with support, Be equipped with a pair of semicircle turntable in each support, set on each turntable there are two slot rolling, two slot rollings respectively in support Driving wheel and driven wheel connect, and driving wheel and driven wheel are connected to the motor;In being respectively equipped with up and down between a pair of of semicircle turntable Vierendeel girder, upper and lower inside casing are connected with four inner frame vertical beams between setting a roof beam in place;It is connected with on inner frame vertical beam if setting a roof beam in place along inside casing The removable steel column of dry row's parallelly distribute on, each row move and are connected with the force application board connected by several hydraulic jacks on steel column; The hydraulic jack by moving steel column connection is supported by the force application board front-back of front and rear row, adjacent force application board surrounds just It is filled with similar materials between cube inside, the pressure for being connected to test device is embedded in similar coal rock layer simulation material Sensor is changed by the similar coal rock layer simulation material stress between each force application board of test device acquisition, obtains simulation coal The Mechanical Characters of Composite Ground of rock stratum.
For above-mentioned technical proposal, the present invention also has further preferred scheme:
Further, it is provided with square trepanning among semicircle turntable in front.
Further, the inside casing is set a roof beam in place connects into rectangular frame by two inner frame longerons and two inner frame crossbeams, and four Root inner frame vertical beam is connected on four angles of inner frame longeron and inner frame crossbeam;Several removable steel column parallelly distribute ons In interior frame rails and inner frame vertical beam.
Further, the force application board of multiple removable steel column connections is equally spaced, and similar coal rock layer simulation material is along adjacent It is in tilted layout between force application board.
Further, the hydraulic jack of equidistantly distributed, each hydraulic jack and length are each connected on removable steel column Cube force application board connects.
Further, it is spherical shape at the hydraulic jack top, force application board and the hydraulic jack junction of front and rear row are Spherical groove.
Further, the removable steel column on force application board front-back can move or rotate along inner frame longeron, interior force application board On removable steel column only along inner frame longeron rotate.
The beneficial effects of the present invention are:
The present invention is laid with coal rock layer simulation by being laid with the coal rock layer of simulation between the force application board for surrounding a square Mine coal rock layer is driven the movement and rotation for moving steel column by motor rotation, so that hydraulic jack varied angle is loaded, and lead to The coal rock layer stress change information for crossing the pressure sensor acquisition being embedded in the coal rock layer laying coal rock layer of simulation is transferred to survey Trial assembly is set, and the Mechanical Characters of Composite Ground of coal rock layer is obtained by test device.The device can be simulated out intuitively by physical simulation experiment Influence of the whole process and overlying rock adopted and excavated to face surrounding rock stability, Study of Strata that can be more careful Between and rock stratum inside Mechanical Characters of Composite Ground, to by the research of the Mechanical Characters of Composite Ground of rock stratum predict and prevent the calamity that mine is brought Evil.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and is constituted part of this application, not Inappropriate limitation of the present invention is constituted, in the accompanying drawings:
Fig. 1 is front view of the present invention;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the vertical view of Fig. 1.
In figure:1, inner frame longeron;2, hydraulic jack;3, semicircle turntable;4, inner frame vertical beam;5, driving wheel;6、 Pedestal;7, driven wheel slot rolling;8, force application board;9, driving wheel slot rolling;10, inner frame crossbeam;11, driven wheel;12, bearing;13, electric Machine;14, steel column is moved.
Specific implementation mode
Below in conjunction with attached drawing and specific embodiment, the present invention will be described in detail, herein illustrative examples of the invention And explanation is used for explaining the present invention, but it is not as a limitation of the invention.
As shown in Figure 1, 2, 3, high inclination-angle coal bearing seams Mechanical Characters of Composite Ground physical analogy of the present invention and test device, including one The pedestal 6 of support device, there are four supports for distribution on pedestal 6, wherein driving wheel 5 and driven wheel 11 are carried in each support, Driving wheel 5 is connect with the motor 13 on pedestal 6, and motor 13 is fixed on by bearing 12 on pedestal 6.Driving wheel 5 and driven wheel 11 It is equipped with a pair of semicircle turntable 3, two slot rollings is respectively equipped on a pair of of semicircle turntable 3, is driving wheel slot rolling 9 and driven wheel Slot rolling 7, driving wheel slot rolling 9 and driven wheel slot rolling 7 are separately connected driving wheel 5 and driven wheel 11;In semicircle turntable 3 in front Between be provided with square trepanning.Inside casing is respectively equipped between a pair of semicircle turntable 3 up and down to set a roof beam in place, inside casing is set a roof beam in place by two inside casings Frame longeron 1 and two inner frame crossbeams 10 connect into rectangular frame, and upper and lower inside casing is connected with four inner frame vertical beams between setting a roof beam in place 4;4 parallelly distribute ons have several removable steel columns 14 along inner frame longeron 1 and inner frame vertical beam, as shown in Figure 2.Each row is removable The force application board 8 connected by several hydraulic jacks 2 is connected on steel column 14.It is supported by 8 front-back of force application board of front and rear row The hydraulic jack 2 connected by moving steel column 14;Wherein, the removable steel column 14 of front and rear row can be moved along inner frame longeron 1 It moves or rotates, the removable steel column 14 on interior force application board 8 is only rotated along inner frame longeron 1.Hydraulic jack is ball at 2 top Shape, force application board 8 and 2 joint of hydraulic jack of front and rear row are spherical groove.
It is filled with similar materials between adjacent force application board 8, is embedded with and is connected in similar coal rock layer simulation material The pressure sensor of test device passes through the similar coal rock layer simulation material stress between each force application board 8 of test device acquisition Variation obtains the Mechanical Characters of Composite Ground of simulation coal rock layer.
One is given below by concrete structure principle to further illustrate the present invention.
1. frame
Outer framework structure is former and later two semicircle turntables 3.Inner frame is inner frame vertical beam 4, inner frame longeron 1, interior Cruciform bracing 10.Internal structure is removable steel column 14, hydraulic jack 2, force application board 8.The whole outer framework of experiment be 2.6m × 2.6m × 2.6m, inside load force application board inside is 2.0m × 2.0m × 2.0m.
Outside is successively each one semicircle turntable 3, has driving wheel slot rolling 9 and driven wheel slot rolling 7 on each turntable, point Not Lian Jie driving wheel 5 and driven wheel 11, each one of the left and right that two idler wheels are arranged in turntable is drawn among the turntable of front Sky, shape are square, from tapping can easily from force application board 8 and similar coal rock layer simulation material stress change feelings Condition.
Removable steel column 14 is in inside, and the force application board 8 that multiple removable steel columns 14 connect is equally spaced, each face five Row, before 14 inside middle of removable steel column on face be to be threadedly coupled, can move to both sides, each move and connect on steel column Five equidistant hydraulic jacks 2 are connect, a cuboid force application board 8 is connected under each hydraulic jack, force surface is pros Shape, hydraulic jack junction are spherical shape, and force application board junction is spherical groove.Similar coal rock layer simulation material is along adjacent force It is in tilted layout between plate 8.
2. transmission
Motor drives driving wheel rotation by bearing, and to drive semicircle turntable to rotate, driven wheel auxiliary rotation maintains Balance.With the movement and rotation of removable steel column, hydraulic jack varied angle is made to load.By being adjusted and being supervised with hydraulic device Control the size of hydraulic jack loading force.
3. test device
The stress intensity of the coal rock layer of rock mass inside analog simulation can be measured by a kind of test device.
When work, the coal rock layer that simulation is laid between the force application board for surrounding a square is laid with coal rock layer, simulates mine Mountain coal rock layer is driven the movement and rotation for moving steel column by motor rotation, hydraulic jack varied angle is made to load.And pass through The coal rock layer stress change information for the pressure sensor acquisition being embedded in the coal rock layer laying coal rock layer of simulation is transferred to test Device is obtained the Mechanical Characters of Composite Ground of coal rock layer by test device.
The invention is not limited in above-described embodiments, on the basis of technical solution disclosed by the invention, the skill of this field For art personnel according to disclosed technology contents, one can be made to some of which technical characteristic by not needing performing creative labour A little to replace and deform, these are replaced and deformation is within the scope of the invention.

Claims (7)

1. a kind of high inclination-angle coal bearing seams Mechanical Characters of Composite Ground physical analogy and test device include a pedestal (6) with support, Be equipped with a pair of semicircle turntable (3) in each support, set on each turntable there are two slot rolling, two slot rollings respectively in support Driving wheel (5) and driven wheel (11) connect, driving wheel (5) and driven wheel (11) are connected with motor (13);A pair of semicircle turn Inside casing is respectively equipped between disk (3) up and down to set a roof beam in place, upper and lower inside casing is connected with four inner frame vertical beams (4) between setting a roof beam in place;Along inside casing The removable steel column (14) set a roof beam in place and be connected with several row's parallelly distribute ons on inner frame vertical beam (4), each row move steel column (14) On be connected with the force application board (8) connected by several hydraulic jacks (2);It is supported by force application board (8) front-back of front and rear row By moving the hydraulic jack (2) of steel column (14) connection, phase is filled between adjacent the surrounded square inside of force application board (8) Like simulation material, it is embedded with the pressure sensor for being connected to test device in similar coal rock layer simulation material, passes through test device Similar coal rock layer simulation material stress variation between each force application board (8) obtained, obtains the Mechanical Characters of Composite Ground of simulation coal rock layer.
2. high inclination-angle coal bearing seams Mechanical Characters of Composite Ground physical analogy according to claim 1 and test device, which is characterized in that It is provided with square trepanning among semicircle turntable (3) in front.
3. high inclination-angle coal bearing seams Mechanical Characters of Composite Ground physical analogy according to claim 1 and test device, which is characterized in that The inside casing is set a roof beam in place connects into rectangular frame, four inner frames by two inner frame longerons (1) and two inner frame crossbeams (10) Vertical beam (4) is connected on four angles of inner frame longeron (1) and inner frame crossbeam (10);Several removable steel columns (14) are flat Row is distributed on inner frame longeron (1) and inner frame vertical beam on (4).
4. high inclination-angle coal bearing seams Mechanical Characters of Composite Ground physical analogy according to claim 1 and test device, which is characterized in that The force application board (8) of multiple removable steel column (14) connections is equally spaced, and similar coal rock layer simulation material is along adjacent force application board (8) Between be in tilted layout.
5. high inclination-angle coal bearing seams Mechanical Characters of Composite Ground physical analogy according to claim 1 and test device, which is characterized in that The hydraulic jack (2) of equidistantly distributed is connected on each removable steel column (14), each hydraulic jack (2) is applied with cuboid Power plate (8) connects.
6. high inclination-angle coal bearing seams Mechanical Characters of Composite Ground physical analogy according to claim 1 and test device, which is characterized in that It is spherical shape at the top of the hydraulic jack (2), force application board (8) and hydraulic jack (2) junction of front and rear row are spherical female Slot.
7. high inclination-angle coal bearing seams Mechanical Characters of Composite Ground physical analogy according to claim 1 and test device, which is characterized in that Removable steel column (14) on force application board (8) front-back can be mobile along inner frame longeron (1) or be rotated, on interior force application board (8) Removable steel column (14) only along inner frame longeron (1) rotate.
CN201810540752.5A 2018-05-30 2018-05-30 Large-dip-angle coal rock stratum mechanical property physical simulation and test device Active CN108489797B (en)

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Cited By (4)

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CN109855974A (en) * 2019-02-27 2019-06-07 重庆大学 Cover stress and deformation characteristic test method based on analog simulation pilot system
CN110196316A (en) * 2019-06-19 2019-09-03 中国平煤神马能源化工集团有限责任公司 Pit mining crack evolvement analog simulation testing stand
CN111812022A (en) * 2020-06-16 2020-10-23 重庆大学 Coal rock three-dimensional strain field visualization system and method under complex geological structure
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