CN203705269U - Coal mine old mined-out area caving zone fractured rock mass secondary deformation compression simulation experiment device - Google Patents
Coal mine old mined-out area caving zone fractured rock mass secondary deformation compression simulation experiment device Download PDFInfo
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- CN203705269U CN203705269U CN201320783166.6U CN201320783166U CN203705269U CN 203705269 U CN203705269 U CN 203705269U CN 201320783166 U CN201320783166 U CN 201320783166U CN 203705269 U CN203705269 U CN 203705269U
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- hydraulic
- end cap
- hydraulic plunger
- cylinder body
- controller
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Abstract
The utility model discloses a coal mine old mined-out area caving zone fractured rock mass secondary deformation compression simulation experiment device which comprises a cylinder, a bracket, a first end cover, a second end cover, a valve, a hydraulic plunger, a displacement sensor, a plurality of pressure sensors, a controller and a hydraulic pump, wherein the cylinder is mounted on the bracket; the first end cover is mounted at one end of the cylinder; the hydraulic plunger is mounted at the other end of the cylinder; two ends of the cylinder are sealed by the first end cover and the hydraulic plunger so as to form a first sealed chamber for accommodating a rock mass to be simulated inside the cylinder; the pressure sensors are distributed on the rock mass to be simulated; leads of the pressure sensors penetrate through the first end cover and are connected with the controller; the valve is mounted on the first end cover; one end of the hydraulic plunger is accommodated inside the cylinder and is a sealed end; the second end cover is mounted on the other end of the hydraulic plunger; the hydraulic plunger is sealed by the second end cover so as to form a second sealed chamber inside the hydraulic plunger; the hydraulic pump is connected with the controller and is used for filling hydraulic oil into the second sealed chamber so as to provide oil pressure; the displacement sensor is mounted on the second end cover and is connected with the controller.
Description
Technical field
The utility model relates to a kind of analogue experiment installation, relates to a kind of colliery old gob caving band fragmented rock body secondary deformation compaction simulation experimental provision.
Background technology
The underground mining of coal resources must form the inbreak of goaf and upper overlying strata body.Facts have proved, coal seam is through long-time natural compacting after exploitation finishes, and goaf and upper overlying strata thereof are known from experience stabilization by compaction gradually, but in fact in caving zone, still has space, a large amount of residual crack.
When whole pit mining finish or ore deposit in the exploitation of certain mining level finish after, the underground water table in mining area can be recovered gradually.Some basicly stable goaf, bottom, Subsidence Area rock mass is because of the effect of underground water, likely can make the region under relative balance state originally occur " activation ", make the softening densification again of fissure zone rock mass, upper overlying strata body produces secondary deformation and causes above goaf earth's surface to occur secondary settlement, thereby jeopardizes the safety of old above goaf buildings or structures.Old goaf is one of the feature in old goaf " activation " because causing the softening rear compressive deformation of inbreak rock mass under later stage water-filling, load action.In order to study " activation " mechanism in old goaf, the rule of research goaf fragmented rock body secondary deformation under load and water-filling condition, for the old above goaf of reasonable utilization mining collapse area land resource, improve land utilization ratio, alleviate the nervous situation of Land Resource in Mining Area and ensure that earth's surface of the old goaf building safety aspect has great importance simultaneously.
Utility model content
The utility model provides a kind of colliery old gob caving band fragmented rock body secondary deformation compaction simulation experimental provision, it probes into the deformation rule of gob caving band fragmented rock body under different capacity values and water-filling condition, can study caving zone fragmented rock body secondary deformation rule by this analogue experiment installation, effectively instruct above goaf soil secondary to utilize work.The utility model belongs to the experimental facilities of a kind of simulation at overlying strata load and water-filling Coal Under ore deposit, old goaf old gob caving band fragmented rock body secondary deformation environment.
The utility model is to realize like this, old goaf, a kind of colliery secondary deformation compaction simulation experimental provision, it comprises cylinder body, support, the first end cap, valve, hydraulic plunger, the second end cap, displacement transducer, some pressure transducers, controller, hydraulic pump; This cylinder body is arranged on this support, one end of this cylinder body is provided with this first end cap, the other end of this cylinder body is provided with this hydraulic plunger, the two ends that this first end cap and this hydraulic plunger seal up this cylinder body make this cylinder interior form the first annular seal space, this first annular seal space is accommodated rock mass to be simulated, these some pressure transducers are distributed on this rock mass to be simulated, the lead-in wire of these some pressure transducers is electrically connected through this first end cap and this controller, and this valve installation covers with water filling in to this first annular seal space at this first end; One end of this hydraulic plunger is housed in this cylinder body and is blind end, the other end of this hydraulic plunger is provided with this second end cap, this this hydraulic plunger of the second end cap seal makes inner second annular seal space that forms of this hydraulic plunger, this second annular seal space is accommodated hydraulic oil, this hydraulic pump be electrically connected this controller and to this second sealing cavity liquid injecting force feed so that oil pressure to be provided, this displacement transducer is arranged on this second end cap dorsad in a side of this second annular seal space and be electrically connected this controller.
As the further improvement of such scheme, this cylinder body is column type and can rotates relative to this support 0-180 degree.
The utility model draws by simulation gob caving band fragmented rock body secondary deformation environment under load and water-filling condition: caving zone fragmented rock body ess-strain rule under different loads; Under same load after stabilization, fragmented rock body ess-strain rule under different injection amount condition.
Accompanying drawing explanation
The principle of work block diagram of old goaf, the colliery secondary deformation compaction simulation experimental provision that Fig. 1 provides for the utility model preferred embodiments.
The structural representation of old goaf, the colliery secondary deformation compaction simulation experimental provision that Fig. 2 provides for the utility model preferred embodiments.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
See also Fig. 1 and Fig. 2, old goaf, the colliery secondary deformation compaction simulation experimental provision that the utility model preferred embodiments provides comprises cylinder body 1, support 7, the first end cap 2, valve 3, hydraulic plunger 4, the second end cap 5, displacement transducer 8, some pressure transducer (not shown), controller (not shown), hydraulic pump (not shown).
1. sampler
One end of cylinder body 1 is provided with the first end cap 2, the other end of cylinder body 1 is provided with hydraulic plunger 4, this first end cap 2 makes inner first annular seal space that forms of this cylinder body 1 with the two ends that this hydraulic plunger 4 seals up this cylinder body 1, this first annular seal space is accommodated rock mass to be simulated, thereby cylinder body 1, the first end cap 2, the common formation sampler of hydraulic plunger 4, this the first annular seal space is exactly the object carrying area of this sampler, this sampler component model main body.Cylinder body 1 is arranged on support 7, and cylinder body 1 can be column type and can carry out rotating within the scope of 0-180 degree relative to this support 7.
2. water filling device
Valve 3 is arranged on the first end cap 2 with to water filling in this first annular seal space, and in present embodiment, valve 3 adopts fast-open type valve, is communicated with in this first annular seal space by water inlet pipe.The valve 3 being arranged on the first end cap 2 forms this water filling device, and this water filling device provides water by the fast-open type valve in the middle of the front end discharge cover (i.e. the first end cap 2) of cylinder body 1 to water inlet pipe.
3. pressure type device
One end of hydraulic plunger 4 is housed in cylinder body 1 and is blind end, the other end of hydraulic plunger 4 is provided with the second end cap 5, second end cap 5 these hydraulic plungers 4 of sealing make inner second annular seal space 6 that forms of this hydraulic plunger 4, this second annular seal space 6 is accommodated hydraulic oil, this hydraulic pump be electrically connected this controller and to the interior fluid injection force feed of this second annular seal space 6 so that oil pressure to be provided.Hydraulic plunger 4, the second end cap 5, this hydraulic pump form pressure type device.
4. displacement monitor
Displacement transducer 8 is arranged on the second end cap 5 dorsad in a side of this second annular seal space 6 and be electrically connected this controller.Displacement transducer 8 forms displacement monitor, moves the data of monitoring device and carries out information acquisition by this controller control bit displacement sensor 8.
5. pressure-detecting device
These some pressure transducers are distributed on this rock mass to be simulated, and the lead-in wire of these some pressure transducers is electrically connected through the first end cap 2 and this controller.These some pressure transducers form pressure-detecting device, and the data of pressure-detecting device are carried out information acquisition by these some pressure transducers of this controller control.
6. information collecting device
This controller is the core component of information collecting device, and the data acquisition of dress sample, compacting, the injecting process is carried out dynamic monitoring by this controller.Instrument box can be set to be connected with controller by serial communication.
The operating process of old goaf, the utility model colliery secondary deformation compaction simulation experimental provision is as follows.
1. open front end end cover (i.e. the first end cap 2) the dress sample of cylinder body 1, in dress sample process, once put into rock sample (i.e. this rock mass to be simulated) and pressure transducer according to design attitude, after dress sample EOP (end of program), front end end cover is installed.
2. use hydraulic pump to provide highly pressurised liquid to the hydraulic jack (i.e. this second annular seal space 6) in the hydraulic piston (being hydraulic plunger 4) of cylinder body 1, promote hydraulic piston, rock sample is exerted pressure.In pressure testing process, monitor rock mass total compression change in displacement by system for monitoring displacement, monitor the stressed variation of rock mass by pressure monitor system.
3. inject the required water yield by the water injection hole in the middle of the front end end cover of cylinder body 1 (water injection hole adopts valve 3 to realize) to cylinder body 1, in the injecting process, monitor rock mass total compression change in displacement by system for monitoring displacement, monitor the stressed variation of rock mass by pressure monitor system.
4. simulate the environment of gob caving band fragmented rock body secondary deformation by exert pressure size and water injection rate of control.
5. start to finish to experiment from experiment, by information collecting device, experimental data is carried out to dynamic acquisition.
Draw by simulation gob caving band fragmented rock body secondary deformation environment under load and water-filling condition: caving zone fragmented rock body ess-strain rule under different loads; Under same load after stabilization, fragmented rock body ess-strain rule under different injection amount condition.
Cylinder body 1 is that corrosion-resistant, high pressure resistant material is made, discharge end cap installs fast-open type valve on the first end cap 2, fast-open type valve can be made pressure transducer lead-in wire and portal, outlet removable and sealing, the other end is equipped with i.e. the second end cap 5 of hydraulic plunger 4, hydraulic cylinder end cover, between hydraulic plunger 4 and hydraulic cylinder end cover, have hermetically-sealed construction, hydraulic cylinder end cover has sealing adjustment structure outward.In hydraulic plunger 4, there is i.e. the second annular seal space 6 of hydraulic fluid chamber.Cylinder body 1 is installed on support 7, can realize 180 degree manual rotations, location.Support 7 is screwed on ground.Compaction apparatus comprises hydraulic power unit, to the hydraulic fluid chamber oiling in hydraulic plunger 4, provides oil pressure.Water filling is carried out water filling by the fast-open type valve on discharge end cap leading portion.Dress sample, compacting, the data acquisition of the injecting process is by information collecting device control.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (2)
1. the old gob caving band fragmented rock body in a colliery secondary deformation compaction simulation experimental provision, is characterized in that: it comprises cylinder body, support, the first end cap, valve, hydraulic plunger, the second end cap, displacement transducer, some pressure transducers, controller, hydraulic pump; This cylinder body is arranged on this support, one end of this cylinder body is provided with this first end cap, the other end of this cylinder body is provided with this hydraulic plunger, the two ends that this first end cap and this hydraulic plunger seal up this cylinder body make this cylinder interior form the first annular seal space, this first annular seal space is accommodated rock mass to be simulated, these some pressure transducers are distributed on this rock mass to be simulated, the lead-in wire of these some pressure transducers is electrically connected through this first end cap and this controller, and this valve installation covers with water filling in to this first annular seal space at this first end; One end of this hydraulic plunger is housed in this cylinder body and is blind end, the other end of this hydraulic plunger is provided with this second end cap, this this hydraulic plunger of the second end cap seal makes inner second annular seal space that forms of this hydraulic plunger, this second annular seal space is accommodated hydraulic oil, this hydraulic pump be electrically connected this controller and to this second sealing cavity liquid injecting force feed so that oil pressure to be provided, this displacement transducer is arranged on this second end cap dorsad in a side of this second annular seal space and be electrically connected this controller.
2. the old gob caving band fragmented rock body in colliery as claimed in claim 1 secondary deformation compaction simulation experimental provision, is characterized in that: this cylinder body is column type and can rotates relative to this support 0-180 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320783166.6U CN203705269U (en) | 2013-12-02 | 2013-12-02 | Coal mine old mined-out area caving zone fractured rock mass secondary deformation compression simulation experiment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320783166.6U CN203705269U (en) | 2013-12-02 | 2013-12-02 | Coal mine old mined-out area caving zone fractured rock mass secondary deformation compression simulation experiment device |
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| Publication Number | Publication Date |
|---|---|
| CN203705269U true CN203705269U (en) | 2014-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320783166.6U Withdrawn - After Issue CN203705269U (en) | 2013-12-02 | 2013-12-02 | Coal mine old mined-out area caving zone fractured rock mass secondary deformation compression simulation experiment device |
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| CN (1) | CN203705269U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616293A (en) * | 2013-12-02 | 2014-03-05 | 安徽理工大学 | Secondary deformation compaction simulation experiment device for fractured rocks in caving zone of old goaf of coal mine |
| CN104237019A (en) * | 2014-09-03 | 2014-12-24 | 黑龙江科技大学 | Coal mine dynamic disaster multi-parameter coupling and determining device |
| CN110441146A (en) * | 2019-08-30 | 2019-11-12 | 中国矿业大学 | A kind of CT scan is crushed the side pressure restraint-type compaction apparatus and method of rock sample hole in situ |
-
2013
- 2013-12-02 CN CN201320783166.6U patent/CN203705269U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616293A (en) * | 2013-12-02 | 2014-03-05 | 安徽理工大学 | Secondary deformation compaction simulation experiment device for fractured rocks in caving zone of old goaf of coal mine |
| CN103616293B (en) * | 2013-12-02 | 2015-10-28 | 安徽理工大学 | Colliery old gob caving band fragmented rock body secondary deformation compaction simulation experimental provision |
| CN104237019A (en) * | 2014-09-03 | 2014-12-24 | 黑龙江科技大学 | Coal mine dynamic disaster multi-parameter coupling and determining device |
| CN104237019B (en) * | 2014-09-03 | 2016-04-13 | 黑龙江科技大学 | Coal mine dynamic disaster Multi-parameter coupling determinator |
| CN110441146A (en) * | 2019-08-30 | 2019-11-12 | 中国矿业大学 | A kind of CT scan is crushed the side pressure restraint-type compaction apparatus and method of rock sample hole in situ |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140709 Effective date of abandoning: 20151028 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |