CN103776572A - Geostress measuring device - Google Patents

Geostress measuring device Download PDF

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Publication number
CN103776572A
CN103776572A CN201410032090.2A CN201410032090A CN103776572A CN 103776572 A CN103776572 A CN 103776572A CN 201410032090 A CN201410032090 A CN 201410032090A CN 103776572 A CN103776572 A CN 103776572A
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CN
China
Prior art keywords
cap
coupling shaft
polyurethane rod
ring
injection hole
Prior art date
Application number
CN201410032090.2A
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Chinese (zh)
Other versions
CN103776572B (en
Inventor
李尧斌
戚良好
陈捷
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安徽理工大学
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Application filed by 安徽理工大学 filed Critical 安徽理工大学
Priority to CN201410032090.2A priority Critical patent/CN103776572B/en
Publication of CN103776572A publication Critical patent/CN103776572A/en
Application granted granted Critical
Publication of CN103776572B publication Critical patent/CN103776572B/en

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Abstract

A geostress measuring device comprises a polyurethane bar, a connecting shaft, a left end cover, a right end cover, a high-pressure tube and a liquid pressurizing device. The connecting shaft is located at the center of the polyurethane bar, the two ends of the connecting shaft extend out of the polyurethane bar, the left end cover is fixed at the left end of the polyurethane bar, the right end cover is fixed at the right end of the polyurethane bar, the connecting shaft is provided with a liquid injection hole, the liquid pressurizing device is connected to one end of the liquid injection hole through the high-pressure tube, the other end of the liquid injection hole is connected into the polyurethane bar, and a pressure gage is arranged on the liquid pressurizing device. The geostress measuring device is simple in structure, convenient to use and capable of accurately measuring geostress in coals and rocks without power sources.

Description

Terrestrial stress proving installation
Technical field
The present invention relates to a kind of stress test device, relate 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.
Summary of the invention
The object of this invention is to provide a kind of terrestrial stress proving installation, 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 invention 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.
Terrestrial stress proving installation of the present invention, 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.
Terrestrial stress proving installation of the present invention, 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.
Terrestrial stress proving installation of the present invention, wherein, described liquid injection hole comprises interconnective axial direction part and radial section.
Terrestrial stress proving installation of the present invention, wherein, is respectively equipped with O-ring seal between described coupling shaft and left and right end cap.
Terrestrial stress proving installation of the present invention, wherein, described liquid pressing device is Manual pressurization pump.
Terrestrial stress proving installation of the present invention, wherein, described polyurethane rod is rubber bar or sticking plaster.
Adopt after such scheme, owing to the present invention includes 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.
Accompanying drawing explanation
Fig. 1 is the sectional view of polyurethane rod in terrestrial stress proving installation of the present invention;
Fig. 2 is the overall diagram of terrestrial stress proving installation of the present invention.
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, terrestrial stress proving installation of the present invention 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 the preferred embodiment of the present invention; not scope of the present invention is limited; design under the prerequisite of spirit not departing from the present invention; various distortion and improvement that the common engineering technical personnel in this area make technical scheme of the present invention, all should fall in the definite protection domain of claims of the present invention.

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.
CN201410032090.2A 2014-01-22 2014-01-22 Detecting earth stress device CN103776572B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410032090.2A CN103776572B (en) 2014-01-22 2014-01-22 Detecting earth stress device

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Application Number Priority Date Filing Date Title
CN201410032090.2A CN103776572B (en) 2014-01-22 2014-01-22 Detecting earth stress device

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CN103776572A true CN103776572A (en) 2014-05-07
CN103776572B CN103776572B (en) 2016-08-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107817069A (en) * 2017-09-23 2018-03-20 韩少鹏 Exploration engineering soft rock detecting earth stress device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0440012A1 (en) * 1990-02-01 1991-08-07 Pfister Messtechnik GmbH Force measuring device
JP2010174559A (en) * 2009-01-30 2010-08-12 Sanko Consultant Kk Method for hydraulic fracture test and measuring device therefor
CN201622211U (en) * 2010-03-30 2010-11-03 深圳市优宝惠新材料科技有限公司 Stress loading device for detecting environment stress cracking indexes
CN102589767A (en) * 2012-02-24 2012-07-18 山东大学 Rock core internal stress field test instrument and use method thereof
CN202628024U (en) * 2012-06-04 2012-12-26 浙江华东工程安全技术有限公司 Hyperpressure packer device
CN203688112U (en) * 2014-01-22 2014-07-02 安徽理工大学 Crustal stress testing apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0440012A1 (en) * 1990-02-01 1991-08-07 Pfister Messtechnik GmbH Force measuring device
JP2010174559A (en) * 2009-01-30 2010-08-12 Sanko Consultant Kk Method for hydraulic fracture test and measuring device therefor
CN201622211U (en) * 2010-03-30 2010-11-03 深圳市优宝惠新材料科技有限公司 Stress loading device for detecting environment stress cracking indexes
CN102589767A (en) * 2012-02-24 2012-07-18 山东大学 Rock core internal stress field test instrument and use method thereof
CN202628024U (en) * 2012-06-04 2012-12-26 浙江华东工程安全技术有限公司 Hyperpressure packer device
CN203688112U (en) * 2014-01-22 2014-07-02 安徽理工大学 Crustal stress testing apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107817069A (en) * 2017-09-23 2018-03-20 韩少鹏 Exploration engineering soft rock detecting earth stress device
CN107817069B (en) * 2017-09-23 2020-05-22 广东建瀚工程管理有限公司 Exploration engineering soft rock ground stress testing device

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