CN205192452U - A test device for $monitoring vertical compressing deformation volume of coal column - Google Patents
A test device for $monitoring vertical compressing deformation volume of coal column Download PDFInfo
- Publication number
- CN205192452U CN205192452U CN201521045327.7U CN201521045327U CN205192452U CN 205192452 U CN205192452 U CN 205192452U CN 201521045327 U CN201521045327 U CN 201521045327U CN 205192452 U CN205192452 U CN 205192452U
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- CN
- China
- Prior art keywords
- hydraulic cylinder
- multistage hydraulic
- coal column
- limiting valve
- multistage
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- Withdrawn - After Issue
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Abstract
The utility model discloses a test device for $monitoring vertical compressing deformation volume of coal column includes hydraulic pump, voltage limiting valve, graduated flask, Y type feed pipe way, horizontal connecting rod, fixing clip fast knot structure, multistage hydraulic cylinder and cone drill bit, multistage hydraulic cylinder places perpendicularly, cone drill bit and multistage hydraulic cylinder's last one -level plunger top fixed connection, multistage hydraulic cylinder all is provided with the fixing clip fast knot except that last one -level plunger constructs, horizontal connecting rod is fixed in multistage hydraulic cylinder's bottom, multistage hydraulic cylinder, hydraulic pump and voltage limiting valve entrance point are connected respectively to the three port that Y type feed pipe was said, voltage limiting valve exit end and graduated flask intercommunication. The utility model discloses it is fixed as an organic whole with cone drill bit and multistage hydraulic cylinder's last one -level plunger, drive cone drill bit through hydraulic pump drive multistage hydraulic cylinder and carry out vertical drilling to the coal column, at coal column lateral deformation volume prison time measuring, through measuring the liquid volume in the graduated flask of discharging among the multistage hydraulic cylinder, obtain the vertical deflection of coal column indirectly, simple structure, the operation is swift, and the security is high.
Description
Technical field
The utility model relates to coal column deformation monitoring device field, specifically a kind of test unit for monitoring the vertical compress variation of coal column.
Background technology
In recent years, due to the restriction of monitoring technology and the deficiency of equipment research and development, for the research of coal column distortion, mostly only focus is placed on and the correlation parameter in coal column transversely deforming is observed, and observational study is not carried out to the vertical distortion of coal column.This kind of research method has certain limitation, can not reflect coal column bulk deformation rule completely, because which limit further developing of stability of coal pillar research.
Summary of the invention
For solving the technical matters of above-mentioned existence, the utility model provides a kind of test unit for monitoring the vertical compress variation of coal column, and structure is simple, easy to operate, measurement result for the vertical compress variation of coal column is precisely reliable, for the vertical Study on Deformation of coal column provides reliable supplementary means.
For achieving the above object, the technical scheme that the utility model adopts is:
A kind of test unit for monitoring the vertical compress variation of coal column, include hydraulic pump, pressure limiting valve, graduated cylinder, Y type feed liquid pipeline, waling stripe, fixing stuck structure, multistage hydraulic cylinder and taper bit, described multistage hydraulic cylinder is vertically placed, described taper bit is fixedly connected with the afterbody plunger head of multistage hydraulic cylinder, described multistage hydraulic cylinder is provided with fixing stuck structure except afterbody plunger, described waling stripe is fixed on the bottom of multistage hydraulic cylinder, three ports of described Y type feed liquid pipeline connect multistage hydraulic cylinder respectively, hydraulic pump and pressure limiting valve entrance point, described pressure limiting valve endpiece is communicated with graduated cylinder.
Shutoff valve is respectively arranged with between described Y type feed liquid pipeline and hydraulic pump, pressure limiting valve.
The afterbody plunger of taper bit and multistage hydraulic cylinder is fixed as one by the utility model, taper bit is driven to carry out vertical boring to coal column by hydraulic pump drive multistage hydraulic cylinder, when coal column transversely deforming amount is monitored, by measuring in multistage hydraulic cylinder the liquid volume be discharged in graduated cylinder, the vertical deflection of indirect acquisition coal column, structure is simple, and swift to operate, security is high.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail:
As shown in Figure 1, this is used for the test unit of monitoring the vertical compress variation of coal column, include hydraulic pump 1, pressure limiting valve 2, graduated cylinder 3, Y type feed liquid pipeline 4, waling stripe 6, fixing stuck structure 7, multistage hydraulic cylinder 8 and taper bit 9, described multistage hydraulic cylinder 8 is vertically placed, described taper bit 9 is fixedly connected with the afterbody plunger head of multistage hydraulic cylinder 8, described multistage hydraulic cylinder 8 is provided with fixing stuck structure 7 except afterbody plunger, described waling stripe 6 is fixed on the bottom of multistage hydraulic cylinder 8, three ports of described Y type feed liquid pipeline 4 connect multistage hydraulic cylinder 8 respectively, hydraulic pump 1 and pressure limiting valve 2 entrance point, described pressure limiting valve 2 endpiece is communicated with graduated cylinder 3.
As preferred mode, between described Y type feed liquid pipeline 4 and hydraulic pump 1, pressure limiting valve 2, be respectively arranged with shutoff valve 5.
Specific operation process of the present utility model is as follows:
The vertical boring of coal column comprises the steps:
(1) the coal column deformation position needing monitoring is determined; Adopt conventional method to be drilled with horizontal drilling to assigned address, horizontal drilling diameter is greater than multistage hydraulic cylinder 8(containing taper bit 9) full-size;
(2) by waling stripe 6 by multistage hydraulic cylinder 8(containing taper bit 9) and Y type feed liquid pipeline 4 push in horizontal drilling, after multistage hydraulic cylinder 8 arrives and is drilled with the assigned address of vertical boring, stop advancing;
(3) open the shutoff valve between Y type feed liquid pipeline 4 and hydraulic pump 1, close the shutoff valve between Y type feed liquid pipeline 4 and pressure limiting valve 2, primer fluid press pump 1, injects highly pressurised liquid in multistage hydraulic cylinder 8;
(4) multistage hydraulic cylinder 8 is under hydraulic action, stretch out successively from first order plunger, the taper bit 9 promoting afterbody plunger head pierces coal body, except afterbody plunger, namely be stuck after every grade of plunger stretches out completely, have in cylinder body when fluid and can not return;
(5) after multistage hydraulic cylinder 8 plunger all stretches out, close hydraulic pump 1, close the shutoff valve between Y type feed liquid pipeline 4 and hydraulic pump 1.
The monitoring of the vertical deflection of coal column comprises the following steps:
(1) arranging pressure limiting valve 2 opening pressure value is the minimum pressure values P that all plungers of multistage hydraulic cylinder 8 keep all stretching out, when pressure limiting valve 2 entrance point pressure is higher than this value, pressure limiting valve 2 is opened, in Y type feed liquid pipeline 4 and multistage hydraulic cylinder 8, liquid flows out, when pressure limiting valve 2 entrance point pressure is lower than this value, pressure limiting valve 2 cuts out, P value computation process is as follows: suppose that in multistage hydraulic cylinder 8, the liquid biggest quality is M, multistage hydraulic cylinder 8 all the other plunger gross masses except outermost layer cylinder barrel are m, outermost layer cylinder barrel interior diameter is D, then P value computing formula is
;
(2) shutoff valve between Y type feed liquid pipeline 4 and pressure limiting valve 2 is opened, discharge the pressure in conduit under fluid pressure and multistage hydraulic cylinder 8, the liquid now flowed out does not enter in graduated cylinder 3, and when pressure limiting valve 2 entrance point pressure is lower than pressure limiting valve opened by pressure value, pressure limiting valve 2 cuts out;
(3) be communicated with pressure limiting valve 2 endpiece by graduated cylinder 3, the liquid flowed out by pressure limiting valve 2 since then enters graduated cylinder 3, counts the monitoring of coal column deflection;
(4) when vertical distortion occurs coal column, compressing multistage hydraulic cylinder 8 plunger retraction, in multistage hydraulic cylinder 8 cylinder body and feed liquid pipeline, pressure raises, and pressure limiting valve 2 is opened and liquid is flowed out, and when pressure is lower than pressure limiting valve 2 opening pressure value, pressure limiting valve 2 cuts out;
(5) because multistage hydraulic cylinder 8 only has afterbody plunger to bounce back, afterbody ram compression amount is the vertical deflection of coal column, and afterbody ram compression amount can be obtained divided by afterbody plunger overall diameter by liquid volume in graduated cylinder 3, concrete computation process is as follows: suppose that in graduated cylinder, liquid volume is V, multistage hydraulic cylinder afterbody plunger overall diameter is d, multistage hydraulic cylinder maximum height is h, then the vertical Deformation calculation formula of coal column is
, the vertical strain calculation formula of coal column is
;
(6) after to be monitored, close the shutoff valve between Y type feed liquid pipeline 4 and pressure limiting valve 2, open the shutoff valve between Y type feed liquid pipeline 4 and hydraulic pump 1, primer fluid press pump 1, extract Y type feed liquid pipeline 4 and liquid in multistage hydraulic cylinder 8 out, now the stuck structure of multistage hydraulic cylinder 8 plunger at different levels exits, and plunger falls after rise step by step, after afterbody plunger falls after rise completely, by waling stripe 6, multistage hydraulic cylinder 8 and Y type feed liquid pipeline 4 are taken out from horizontal drilling.
Certainly; above-mentioned explanation is not to restriction of the present utility model; the utility model is also not limited in above-mentioned citing, the change that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement, also should belong to protection domain of the present utility model.
Claims (2)
1. one kind for monitoring the test unit of the vertical compress variation of coal column, it is characterized in that, include hydraulic pump (1), pressure limiting valve (2), graduated cylinder (3), Y type feed liquid pipeline (4), waling stripe (6), fixing stuck structure (7), multistage hydraulic cylinder (8) and taper bit (9), described multistage hydraulic cylinder (8) is vertically placed, described taper bit (9) is fixedly connected with the afterbody plunger head of multistage hydraulic cylinder (8), described multistage hydraulic cylinder (8) is provided with fixing stuck structure (7) except afterbody plunger, described waling stripe (6) is fixed on the bottom of multistage hydraulic cylinder (8), three ports of described Y type feed liquid pipeline (4) connect multistage hydraulic cylinder (8) respectively, hydraulic pump (1) and pressure limiting valve (2) entrance point, described pressure limiting valve (2) endpiece is communicated with graduated cylinder (3).
2. a kind of test unit for monitoring the vertical compress variation of coal column according to claim 1, is characterized in that, is respectively arranged with shutoff valve (5) between described Y type feed liquid pipeline (4) and hydraulic pump (1), pressure limiting valve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521045327.7U CN205192452U (en) | 2015-12-16 | 2015-12-16 | A test device for $monitoring vertical compressing deformation volume of coal column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521045327.7U CN205192452U (en) | 2015-12-16 | 2015-12-16 | A test device for $monitoring vertical compressing deformation volume of coal column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205192452U true CN205192452U (en) | 2016-04-27 |
Family
ID=55785431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521045327.7U Withdrawn - After Issue CN205192452U (en) | 2015-12-16 | 2015-12-16 | A test device for $monitoring vertical compressing deformation volume of coal column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205192452U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387821A (en) * | 2015-12-16 | 2016-03-09 | 山东科技大学 | Test device for monitoring vertical compression deformation amount of coal pillar |
| CN110648504A (en) * | 2019-09-30 | 2020-01-03 | 中南大学 | Landslide disaster monitoring device and method |
-
2015
- 2015-12-16 CN CN201521045327.7U patent/CN205192452U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387821A (en) * | 2015-12-16 | 2016-03-09 | 山东科技大学 | Test device for monitoring vertical compression deformation amount of coal pillar |
| CN105387821B (en) * | 2015-12-16 | 2017-11-07 | 山东科技大学 | A kind of experimental rig for being used to monitor the vertical compress variation of coal column |
| CN110648504A (en) * | 2019-09-30 | 2020-01-03 | 中南大学 | Landslide disaster monitoring device and method |
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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: 20160427 Effective date of abandoning: 20171107 |
|
| AV01 | Patent right actively abandoned |