CN203688412U - Novel true triaxial rock seepage holder - Google Patents
Novel true triaxial rock seepage holder Download PDFInfo
- Publication number
- CN203688412U CN203688412U CN201320677054.2U CN201320677054U CN203688412U CN 203688412 U CN203688412 U CN 203688412U CN 201320677054 U CN201320677054 U CN 201320677054U CN 203688412 U CN203688412 U CN 203688412U
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- core
- rock core
- plungers
- duct
- plunger
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Abstract
The utility model discloses a novel true triaxial rock seepage holder. The novel true triaxial rock seepage holder is a cylindrical closed combined body consisting of axial compression plungers, a holder cylinder, a rock core and a pressure hose, wherein two axial compression plungers are symmetrically arranged on two end faces of the rock core, and fluid channels are respectively formed along the axes positions and off-axis positions of the plungers; a hole is drilled in the axis position of the rock core to penetrate through the bottom surfaces at two ends, the pressure hose is inserted into the channels of the rock core, and two ends of the hose are connected with axis channels of the plungers; the rock core and the two axial compression plungers are wrapped with a sealing cover; three metering pumps are respectively communicated with the axial compression plungers to apply the maximum main stress to two ends of the rock core, are communicated with an external annular pressure cavity to apply middle main stress to the side face of the rock core and are communicated with an internal pressure hose to apply the minimum main stress to the inner hole of the rock core; another metering pump is arranged to be connected with the off-axis channels of the plungers to inject liquid into the rock core. The test requirement on pore gas/liquid seepage of the rock core in a true triaxial stress state under multiple boundary conditions can be met, and the seepage holder has the characteristics of simple structure, convenient operation and simplicity in rock core processing implementation.
Description
Technical field
The utility model relates to a kind of resident fluid migration proving installation, relates in particular to the proving installation of blowhole deformation effect gas/liquid seepage flow characteristics under true condition of triaxial stress.
Background technology
At present the stress loading mode of most true three axle rock seepage flow proving installations be by be to three directions of six end faces of cube or rectangular parallelepiped core respectively load applications realize.The true Three-phase stress state of the better simulation rock of which, but for making a big impact of other physical parameters outside de-stress: (1), because six end faces of core are to be all subject to rigidity to load, core compress variation can only be according to the displacement calculation of rigid pressure head.If simulate stressed uninstall process, conventionally adopt the pressure head of a direction to realize with the mode that its loading end face separates, the displacement that unloads in this case pressure head can not have been served as the true strain of core.(2) even paste foil gauge on core surface, in loading procedure, the friction effect of pressure head and core end face also affects the Measurement accuracy of foil gauge.In this external loading procedure, be easy to occur that foil gauge lead-in wire is squeezed and occurs foil gauge breakage problem with resistance grid.(3) square core has high requirements to machining precision, once deviation appears in the verticality of six end faces of core, will occur the problem such as eccentric compression and nonaffine deformation.Therefore, be necessary that a kind of novel true three axle seepage flow clampers of invention overcome in current equipment to have drawback, more closing to reality Work condition analogue resident fluid migration, obtains more comprehensively physical and mechanical parameter data reliably.
Summary of the invention
The utility model object is to provide a kind of novel true three axle rock clampers, be applied to cylindrical core is applied to three-dimensional anisobaric stress, also can inject various fluids to stand under load core, while simulating fluid current stabilization under true/false three Spindle Status Stress Control or displacement control boundary condition, stress unloading, rock mass breaks and causes flow field change problem simultaneously.
The true three axle rock seepage flow clamper composition structures that the utility model relates to, its left end is provided with left axial compression plunger, left plunger bushing; Right-hand member is provided with right axial compression plunger, right plunger bushing.It is characterized in that respectively there are two ducts in two end axles hydraulic plunger center, left and right, wherein a pair of duct is laid in plunger center, and a pair of duct is arranged near central duct in addition.Plunger nested enter in plunger bushing, between plunger and its sleeve, cavity is hydraulic chamber, plunger bushing embeds clamper cylindrical shell.The test sample that the utility model relates to is cylindric core, runs through two end faces along the boring of core axial location.In duct, insert pneumatic hose, be communicated with respectively two end plug.
True three axle rock seepage flow clampers described in the utility model are followed successively by axial compression (major principal stress), external rings pressure (intermediate principal stress) and inner loop pressure (least principal stress) for the suffered three-dimensional unequal pressure of cylindric core, and core carrying three-dimensional unequal pressure and pore pressure are achieved in that
1) the suffered major principal stress of core namely axle pressure be existing to the compacting of left/right axial compression plunger note by a high-pressure metering pump;
2) the suffered intermediate principal stress of core namely external rings to press be existing to the hydraulic cavities note compacting of gum cover by a high-pressure metering pump;
3) the suffered least principal stress of core namely inner loop to press be existing to the pneumatic hose note compacting of core inside by a high-pressure metering pump;
4) inject the fluid of core inside by being positioned at the duct of departing from left plunger center, flow out from right plunger duct after entering core;
5) paste foil gauge in the orthogonal laying in core outside surface middle part, wire is drawn from the data-interface end at clamper middle part.
By change the output pressure of each volume pump or flow can simulated formation in different stress boundary or displacement boundary conditions and pore pressure, monitor core strain simultaneously.
Brief description of the drawings
Fig. 1 is the structural representation of true three axle rock clampers of the present utility model;
Wherein, 1 is fluid injection pump, 2 is inner loop press pump, 3 is left plunger, 4 is left end plunger bushing, 5 is clamper cylindrical shell, 6 is inner loop pressure injection side, 7 is fluid injection side, 8 is sealing shroud, 9 is strain acquirement instrument, 10 is core, 11 is right-hand member plunger bushing, 12 is right plunger, 13 is external rings press pump, 14 is flowmeter, 15 is inner loop pressure pressure relief vent, 16 is right-hand member axial compression chamber, 17 is pore fluid tap hole, 18 is external rings pressure chamber, 19 is left end axial compression chamber, 20 is axial compression pump, 21 is inner loop moulding cover, 22 is strain rosette, 23 is external rings pressure injection side, 24 is external rings pressure-controlled valve, 25 is pore fluid injection valve, 26 is inner loop pressure injection pressure valve, 27 is inner loop pressure pressure relief valve, 28 is the emptying valve of pore fluid, 29 is axial compression by-pass valve control.
Embodiment
In conjunction with Figure of description, embodiment of the present utility model is described.
As shown in Figure 1, true three axle rock clampers of the present utility model are that left end plunger bushing 4 connects left plunger 3 and clamper cylindrical shell 5, right-hand member plunger bushing 11 connects right plunger 12 and clamper cylindrical shell 5, left plunger 3 is nested in left end plunger bushing 4, in the nested right-hand member plunger bushing 11 of right plunger 12, between left end plunger bushing 4 and left plunger 3, there is left end axial compression chamber 19, between right-hand member plunger bushing 11 and right plunger 12, there is right-hand member axial compression chamber 16, core 10 is wrapped in sealing shroud 10, its left and right end contacts respectively left plunger 3 and right plunger 12, between sealing shroud 10 and clamper cylindrical shell 5, there is external rings to press chamber 18, external rings press pump 13 is communicated with external rings and presses chamber 18, leave inner loop in the center of left plunger 3 and press injection side 6, leave inner loop in the center of right plunger 12 and press pressure relief vent 15, inner loop moulding cover 21 is communicated with inner loop and presses injection side 6 and inner loop to press pressure relief vent 15, near pressing injection side 6, inner loop leaves pore fluid injection side 7, near pressing pressure relief vent 15, inner loop leaves pore fluid tap hole 17, inner loop presses injection side 6 to be communicated with inner loop press pump 2, pore fluid injection side 7 open pore fluid injection pumps 1, pore fluid tap hole 17 is communicated with flowmeter 14.
Claims (2)
1. novel true three axle rock seepage flow clampers, is characterized in that forming a tubular assembly by axial compression plunger, clamper cylindrical shell, core and the pressure hose of inserting core inside thereof; Wherein, described axial compression plunger is made up of two plungers, is arranged symmetrically in core two ends, along axial location and the off-axis position thereof of two plungers, duct is set respectively, and a pair of duct is used for applying inner loop and presses, and another is used for injecting pore fluid to duct; Core is processed into column, runs through two bottom surfaces along its axis boring, pressure hose is inserted in core duct, flexible pipe two ends connect plunger central duct; Sealing shroud parcel core and two axial compression plungers, insert in clamper cylindrical shell, is external rings pressure chamber between sealing shroud and clamper sidewall; Arrange three volume pumps respectively the hydraulic cavities of connection shaft hydraulic plunger end core is applied major principal stress, is communicated with external rings and presses chamber to apply intermediate principal stress, be communicated with inner pressure hose core endoporus is applied to least principal stress core; A volume pump connection plunger off-axis line duct is separately set core is injected to fluid.
2. true three axle rock seepage flow clampers as claimed in claim 1, it is characterized in that, along the axial location boring of column core, and pressure hose is inserted in duct, flexible pipe two ends are provided with O-ring seal, are communicated with the central duct of two end plug, flexible tube wall expansion contact core hole wall after pressure hose note is pressed, realize core is applied to least principal stress function, reach the seal request of gas/liquid seepage flow in core simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320677054.2U CN203688412U (en) | 2013-10-31 | 2013-10-31 | Novel true triaxial rock seepage holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320677054.2U CN203688412U (en) | 2013-10-31 | 2013-10-31 | Novel true triaxial rock seepage holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203688412U true CN203688412U (en) | 2014-07-02 |
Family
ID=51010299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320677054.2U Withdrawn - After Issue CN203688412U (en) | 2013-10-31 | 2013-10-31 | Novel true triaxial rock seepage holder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203688412U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103543092A (en) * | 2013-10-31 | 2014-01-29 | 山东科技大学 | Rock core clamp holder capable of simulating complex migration process of formation fluid and using method of rock core clamp holder |
| CN106706499A (en) * | 2017-01-16 | 2017-05-24 | 中国科学院武汉岩土力学研究所 | True triaxial test device and system |
| CN107748127A (en) * | 2017-11-20 | 2018-03-02 | 中南大学 | Rock crusher band seepage flow test device |
| CN110595905A (en) * | 2019-10-21 | 2019-12-20 | 安徽理工大学 | Portable rock core multi-parameter comprehensive testing device and testing method |
-
2013
- 2013-10-31 CN CN201320677054.2U patent/CN203688412U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103543092A (en) * | 2013-10-31 | 2014-01-29 | 山东科技大学 | Rock core clamp holder capable of simulating complex migration process of formation fluid and using method of rock core clamp holder |
| CN103543092B (en) * | 2013-10-31 | 2016-02-17 | 山东科技大学 | The rock core fastener of the complicated migration process of a kind of simulated formation fluid and using method thereof |
| CN106706499A (en) * | 2017-01-16 | 2017-05-24 | 中国科学院武汉岩土力学研究所 | True triaxial test device and system |
| CN107748127A (en) * | 2017-11-20 | 2018-03-02 | 中南大学 | Rock crusher band seepage flow test device |
| CN110595905A (en) * | 2019-10-21 | 2019-12-20 | 安徽理工大学 | Portable rock core multi-parameter comprehensive testing device and testing 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: 20140702 Effective date of abandoning: 20160217 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140702 Effective date of abandoning: 20160217 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |