CN203688112U - Crustal stress testing apparatus - Google Patents
Crustal stress testing apparatus Download PDFInfo
- Publication number
- CN203688112U CN203688112U CN201420041802.2U CN201420041802U CN203688112U CN 203688112 U CN203688112 U CN 203688112U CN 201420041802 U CN201420041802 U CN 201420041802U CN 203688112 U CN203688112 U CN 203688112U
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- CN
- China
- Prior art keywords
- end cap
- polyurethane rod
- coupling shaft
- ring
- proving installation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
A crustal stress testing apparatus comprises a polyurethane rod, a connecting shaft, a left end cap, a right end cap, a high-pressure pipe and a liquid pressurization apparatus. The connecting shaft is positioned in the center of the polyurethane rod, and two ends of the connecting shaft stretch out from the polyurethane rod. The left end cap is fixed to a left end of the polyurethane rod and the right end cap is fixed to the right end of the polyurethane rod. The connecting shaft is provided with a liquid injection hole. The liquid pressurization apparatus is connected with one end of the liquid injection hole through the high-pressure pipe. The other end of the liquid injection hole is connected to the inside of the polyurethane rod. A pressure gauge is mounted on the liquid pressurization apparatus. The crustal stress testing apparatus is simple in structure and convenient to use, and can accurately measure the crustal stress in a coal body or a rock body without a power supply.
Description
Technical field
The utility model relates to a kind of stress test device, relates to specifically the proving installation of terrestrial stress in a kind of coal body, rock mass.
Background technology
Terrestrial stress refers to the stress that underground coal rock layer is subject to, and mainly includes superincumbent stratum the conduct oneself with dignity gravity stress causing and the tectonic stress being caused by geological structure.Along with the carrying out of coal mining activity, destroy original stress equilibrium, make to adopt the redistribution that stress has appearred in space, therefore, the digging space around stress of coal and rock also comprises mining-induced stress.Terrestrial stress size is the underlying parameter of the disaster preventions such as coal mining, supporting and Roof Control, coal and Gas Outburst, test and assessment coal and rock stress are the main contents that observation is pressed in ore deposit, are to solve the decision-making foundation that is subject to the key technical problems such as coal body safe working under strata behavior analysis of roadway control, mining sequence design, roadway position choose reasonable and maintenance, rock burst and the coal of mining influence and gas outbursts Prediction and control, piestic water.
Terrestrial stress test is a very complicated engineering.At present, be really applicable to working condition under coal mine, conveniently coal and rock stress test instrument is still less.
Utility model content
The purpose of this utility model is to provide a kind of terrestrial stress proving installation, and it is simple in structure, easy to use, and can accurately record the terrestrial stress in coal body, rock mass without power supply.
To achieve these goals, technical solution of the present utility model is: a kind of terrestrial stress proving installation, comprise polyurethane rod, coupling shaft, left end cap, right end cap, high-voltage tube, liquid pressing device, described coupling shaft is positioned at described polyurethane rod center and stretch out outside polyurethane rod at coupling shaft two ends, described left end cap is fixed on described polyurethane rod left end, described right end cap is fixed on described polyurethane rod right-hand member, on described coupling shaft, have liquid injection hole, described liquid pressing device connects one end of described liquid injection hole by described high-voltage tube, the other end of described liquid injection hole is connected in described polyurethane rod, described liquid pressing device is provided with tensimeter.
The utility model terrestrial stress proving installation, wherein, described left end cap is enclosed within the left end of described coupling shaft, and described right end cap is enclosed within described coupling shaft right-hand member, and is respectively equipped with two set nuts in described left and right end cap outside on described coupling shaft.
The utility model terrestrial stress proving installation, wherein, on described left and right end cap, be respectively equipped with ring-type installation end, the left and right two ends of described polyurethane rod are respectively equipped with ring-type mounting groove, ring-type installation end on described left end cap is located in the ring-type mounting groove of described polyurethane rod left end, and the ring-type installation end on described right end cap is located in the ring-type mounting groove of described polyurethane rod right-hand member.
The utility model terrestrial stress proving installation, wherein, described liquid injection hole comprises interconnective axial direction part and radial section.
The utility model terrestrial stress proving installation, wherein, is respectively equipped with O-ring seal between described coupling shaft and left and right end cap.
The utility model terrestrial stress proving installation, wherein, described liquid pressing device is Manual pressurization pump.
The utility model terrestrial stress proving installation, wherein, described polyurethane rod is rubber bar or sticking plaster.
Adopt after such scheme, because the utility model comprises polyurethane rod, coupling shaft, high-voltage tube, liquid pressing device, on coupling shaft, have liquid injection hole, liquid pressing device connects one end of liquid injection hole by high-voltage tube, the other end of liquid injection hole is connected to polyurethane Bang center, liquid pressing device is provided with tensimeter, therefore can adopt liquid pressing device that liquid is pressed into polyurethane rod by liquid injection hole, polyurethane rod internal pressure is raise, in the time that the pressure in polyurethane rod equates with the stress in rock mass, the shown force value of liquid pressing device pressure gauge is the terrestrial stress that institute's location is put, this apparatus structure is simple, easy to use, and do not need power supply.
Brief description of the drawings
Fig. 1 is the sectional view of polyurethane rod in the utility model terrestrial stress proving installation;
Fig. 2 is the overall diagram of the utility model terrestrial stress proving installation.
Embodiment
As Fig. 1, shown in 2, a kind of terrestrial stress proving installation, comprises polyurethane rod 11, coupling shaft 13, left end cap 15, right end cap 17, high-voltage tube 18, liquid pressing device 19, coupling shaft 13 is positioned at polyurethane Bang11 center and stretch out outside polyurethane rod 11 at coupling shaft 13 two ends, coupling shaft 13, left end cap 15, right end cap 17 all adopts stainless steel material, a left side, right end cap 15, on 17, be respectively equipped with ring- type installation end 151, 171, polyurethane rod 11 left sides, right two ends are respectively equipped with ring- type mounting groove 111, 113, ring-type installation end 151 on left end cap 15 is located in the ring-type mounting groove 111 of polyurethane rod 11 left ends, and left end cap 15 is enclosed within the left end of coupling shaft 13, ring-type installation end 171 on right end cap 17 is located in the ring-type mounting groove 113 of polyurethane rod 11 right-hand members, and right end cap 17 is enclosed within coupling shaft 13 right-hand members, coupling shaft 13 two ends are respectively equipped with acme thread, on coupling shaft 13 on a left side, right end cap 15, 17 outsides are bolted with respectively two set nuts 21, 22, 23, 24, coupling shaft 13 is with left, right end cap 15, between 17, be respectively equipped with O-ring seal 25, 27, on coupling shaft 13, have liquid injection hole 131, liquid injection hole 131 comprises interconnective axial direction part 132 and radial section 133, liquid pressing device 19 is connected with high-voltage tube 18, high-voltage tube 18 is threadedly connected to one end of the axial direction part 132 of liquid injection hole 131, one end of liquid injection hole 131 radial sections is connected in polyurethane rod 11, and liquid pressing device 19 is provided with tensimeter 191.The liquid being pressed in liquid injection hole 131 is hydraulic oil, and liquid pressing device 19 adopts Manual pressurization pump.
The liquid being pressed in liquid injection hole 131 can also be water, and polyurethane rod 11 also can adopt rubber bar or sticking plaster.
When use, in the test point that need to test terrestrial stress to coal body or rock mass internal bore, the utility model terrestrial stress proving installation put into hole, the Swelling and contraction of polyurethane is very competent, by Manual pressurization pump to the 11 interior pressurizations of polyurethane rod, in the time that tensimeter tends towards stability, stop pressurization, read pressure gauge reading and be the terrestrial stress that institute's location is put.
The above embodiment is described preferred implementation of the present utility model; not scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that the common engineering technical personnel in this area make the technical solution of the utility model, all should fall in the definite protection domain of claims of the present utility model.
Claims (7)
1. a terrestrial stress proving installation, it is characterized in that: comprise polyurethane rod (11), coupling shaft (13), left end cap (15), right end cap (17), high-voltage tube (18), liquid pressing device (19), described coupling shaft (13) is positioned at described polyurethane rod (11) center and stretch out outside polyurethane rod (11) at coupling shaft (13) two ends, described left end cap (15) is fixed on described polyurethane rod (11) left end, described right end cap (17) is fixed on described polyurethane rod (11) right-hand member, on described coupling shaft (13), have liquid injection hole (131), described liquid pressing device (19) connects one end of described liquid injection hole (131) by described high-voltage tube (18), the other end of described liquid injection hole is connected in described polyurethane rod (11), described liquid pressing device (19) is provided with tensimeter (191).
2. terrestrial stress proving installation as claimed in claim 1, it is characterized in that: described left end cap (15) is enclosed within the left end of described coupling shaft (13), described right end cap (17) is enclosed within described coupling shaft (13) right-hand member, and upper two set nuts (21,22,23,24) that are respectively equipped with outside described left and right end cap (15,17) of described coupling shaft (13).
3. terrestrial stress proving installation as claimed in claim 2, it is characterized in that: on described left and right end cap (15,17), be respectively equipped with ring-type installation end (151,171), the left and right two ends of described polyurethane rod (11) are respectively equipped with ring-type mounting groove (111,113), ring-type installation end (151) on described left end cap (15) is located in the ring-type mounting groove (111) of described polyurethane rod (11) left end, and the ring-type installation end (171) on described right end cap (17) is located in the ring-type mounting groove (113) of described polyurethane rod (11) right-hand member.
4. terrestrial stress proving installation as claimed in claim 3, is characterized in that: described liquid injection hole (131) comprises interconnective axial direction part (132) and radial section (133).
5. terrestrial stress proving installation as claimed in claim 4, is characterized in that: between described coupling shaft (13) and left and right end cap (15,17), be respectively equipped with O-ring seal (25,27).
6. terrestrial stress proving installation as claimed in claim 5, is characterized in that: described liquid pressing device (19) is Manual pressurization pump.
7. terrestrial stress proving installation as claimed in claim 6, is characterized in that: described polyurethane rod (11) is rubber bar or sticking plaster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420041802.2U CN203688112U (en) | 2014-01-22 | 2014-01-22 | Crustal stress testing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420041802.2U CN203688112U (en) | 2014-01-22 | 2014-01-22 | Crustal stress testing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203688112U true CN203688112U (en) | 2014-07-02 |
Family
ID=51009999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420041802.2U Withdrawn - After Issue CN203688112U (en) | 2014-01-22 | 2014-01-22 | Crustal stress testing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203688112U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776572A (en) * | 2014-01-22 | 2014-05-07 | 安徽理工大学 | Geostress measuring device |
| CN105841860A (en) * | 2016-04-29 | 2016-08-10 | 重庆大学 | Quantum dot crustal stress testing device, and preparation method and using method thereof |
-
2014
- 2014-01-22 CN CN201420041802.2U patent/CN203688112U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776572A (en) * | 2014-01-22 | 2014-05-07 | 安徽理工大学 | Geostress measuring device |
| CN103776572B (en) * | 2014-01-22 | 2016-08-17 | 安徽理工大学 | Detecting earth stress device |
| CN105841860A (en) * | 2016-04-29 | 2016-08-10 | 重庆大学 | Quantum dot crustal stress testing device, and preparation method and using method thereof |
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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: 20140702 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |