CN103543049A - Method for preparing center-holed artificial simulation core sample - Google Patents
Method for preparing center-holed artificial simulation core sample Download PDFInfo
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- CN103543049A CN103543049A CN201310415324.7A CN201310415324A CN103543049A CN 103543049 A CN103543049 A CN 103543049A CN 201310415324 A CN201310415324 A CN 201310415324A CN 103543049 A CN103543049 A CN 103543049A
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- rock core
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Abstract
The invention provides a method of preparing a center-holed artificial simulation core sample. The preparing steps comprises: (1) choosing the ratio of materials for the artificial simulation core sample and compounding the materials; (2) putting mortar prepared from the compound artificial simulation materials into a test mold; (3) pressurizing the molded artificial sample, wherein the applied pressure and pressurizing time depend on experiment setting requirements; (4) demolding the center-holed artificial simulation core sample which is subjected to pressurization; (5) performing nature drying treatment in shade for the demoulded enter-holed artificial simulation core sample. The method provided by the invention is easy and convenient to operate and the center-holed artificial simulation core sample is prepared by the preparing method aforementioned.
Description
Technical field
The present invention relates to a kind of preparation method of manual simulation's rock core test specimen, particularly the preparation method of hole, a kind of preparing centre manual simulation's rock core test specimen.
background technology
The true core that scene is fetched is processed into key rock mechanical property test test specimen, and its process of coring is larger on the impact of got test specimen, even if obtain complete rock core, the impact of damage is also very remarkable to the change of rock property.
Summary of the invention
The present invention provides a kind of laboratory simulation true core defect for above-mentioned defect, the preparation method of center pit manual simulation rock core test specimen.
To achieve these goals, a first aspect of the present invention provides a kind of preparing centre manual simulation's rock core test piece mould with holes.
The manual simulation rock core test piece mould with holes according to a set of center of first aspect present invention comprises test specimen top pressure head, test specimen bottom pressure head, rock core lobe, sleeve, center pit post, limit orifice plate, compacting instrument, dress mould base, wherein rock core lobe is that encapsulation is in sleeve, in the cylindrical space that test specimen bottom pressure head encapsulation forms at rock core lobe, center pit post is inserted in the pressure head of test specimen bottom, by coordinating of orifice plate making center pit post vertical with limit, after rock core lobe and the combination of test specimen bottom pressure head, be nested in dress mould base, mortar is inserted in the formed cylindrical space of rock core lobe, mortar is inserted in process and is needed to carry out simple compacting with compacting instrument, mortar is inserted to certain altitude, put into another limit orifice plate, test specimen top pressure head is installed, then, from bottom, take out dress mould base.
Preferably, the quantity of described test specimen bottom pressure head is one.
Preferably, the quantity of described test specimen top pressure head is one.
Preferably, the quantity of described rock core lobe is two
Preferably, the quantity of described center pit post is one
Preferably, the quantity of described limit orifice plate is two
Preferably, the quantity of described sleeve is one.
Preferably, the quantity of described dress mould base is one.
Preferably, the quantity of described compacting instrument is one.
Preferably, the right cylinder of (hole depth certain depth) with holes centered by the pressure head of described test specimen bottom.
Preferably, centered by the pressure head of described test specimen top with the right cylinder of through hole.
Preferably, described limit orifice plate is the cylindrical thin plate with through hole.
Preferably, centered by the compressing tablet of described compacting instrument with the right cylinder of through hole.
Preferably, the enclosure space that described rock core lobe forms is right cylinder.
Preferably, within described rock core lobe is nested in sleeve, and can be free to slide.
Preferably, described limit orifice plate can be free to slide along center pit post.
Preferably, described center pit post is inserted in the pressure head of test specimen bottom, by coordinating of orifice plate making center pit post vertical with limit.
Preferably, free endwisely slipping along enclosure space in the enclosure space that described test specimen pressure head can form at two rock core lobes.
Preferably, described dress mould base is cylinder concave station, and the diameter of two rock core lobe composition cylindrical spaces is identical with the minimum diameter of dress mould base.
Preferably, the maximum inner diameter of described dress mould base is identical with the columniform maximum gauge that two rock core lobes form, and two rock core lobe combinations can be nested in certain depth in dress mould base.
Preferably, the maximum gauge of described dress mould base is identical with sleeve maximum gauge, and it is nested that sleeve can combine by rock core lobe, and sleeve can be stood upright on dress mould base.
Preferably, the maximum gauge of described compacting instrument is slightly less than the diameter of the cylindrical space that two rock core lobes form.
Preferably, being axially free to slide of the enclosure space that described compacting instrument can form along two rock core lobes.
Preferably, the cylindrical space that described two rock core lobes form is for the filling of mortar.
Preferably, the fit system of described test specimen pressure head and two rock core lobes is clearance fit.
Preferably, the fit system of described center pit post and two rock core lobes is clearance fit.
Preferably, the fit system of described test specimen top pressure head and center pit post is clearance fit.
Preferably, described center pit post is clearance fit with the fit system of limit orifice plate.
Preferably, the fit system of described rock core lobe and sleeve is clearance fit.
Preferably, described test specimen pressure head wall surface is provided with scale mark.
Preferably, the material of described manual simulation's test piece mould is 304 stainless steels.
Second aspect present invention provides the using method of the artificial simulation core test piece mould of a set of both sides plane, and it comprises the following steps:
A. according to the material mixture ratio setting, carry out material weighing;
B. mortar evenly mixes;
C. mortar is inserted test piece mould;
D. insert in mortar process and constantly with compacting instrument, carry out simple compacting;
E. mortar is filled into after predetermined depth, and limit orifice plate and test specimen top pressure head are installed;
F. the dress mould base of bottom is unloaded;
G. mould parts being installed is put into add and is presented a theatrical performance as the last item on a programme;
H. mould is loaded to preset pressure;
I. constantly supplement hydraulic pressure, after tensimeter is stable, not in pressurization;
J. after pressure-loaded certain hour, take apart a die;
K. test specimen pressure head is taken off, after test specimen solidifies certain hour, carry out the test specimen demoulding.
1. after the demoulding, test specimen is put in the cool and naturally dried in the shade a period of time.
Preferably, above step is carried out successively, and in completing steps j, step k, step 1, repeating step a～step I, to improve the preparation efficiency of manual simulation's rock core test specimen.
Preferably, a set of standard manual simulation's rock core mould that described test piece mould provides for first aspect present invention.
Preferably, in the preparation flow of described manual simulation's rock core test specimen, total many covers standard manual simulation rock core mould carries out test material preparation operation.
Preferably, described test specimen pressure head wall surface is provided with scale mark.
Preferably, described manual simulation's rock core height of specimen is controlled within the specific limits by the scale mark of test specimen pressure head.
More multioperation is all known for those of ordinary skills, repeats no more.
The technical scheme of manual simulation's rock core test material preparation method that second aspect present invention provides comprises the combination in any of each part mentioned above, and the simple change of each part mentioned above assembly or combination are still protection scope of the present invention.
Accompanying drawing explanation
Fig. 1 is according to the structural representation of a set of center of first aspect present invention manual simulation's rock core test piece mould with holes;
Fig. 2 is the complete mould schematic diagram of filled with mortar before precharge.
In Fig. 1, Fig. 2, numeral represents respectively:
Pressure head 2-test specimen top, 1-test specimen bottom pressure head
3-rock core lobe 4-sleeve
5-center pit post 6-limits orifice plate
7-compacting instrument 8-dress mould base
Embodiment
For technical characterictic of the present invention, object and effect being had more clearly, understand, now contrast accompanying drawing explanation the specific embodiment of the present invention.
Fig. 1 is according to the structural representation of a set of center of first aspect present invention manual simulation's rock core test piece mould with holes, in this preparation method, a set of standard manual simulation's rock core test piece mould comprises test specimen bottom pressure head 1, test specimen top pressure head 2, rock core lobe 3, sleeve 4, center pit post 5, limit orifice plate 6, compacting instrument 7, dress mould base 8.
In this preparation method, the quantity of described test specimen bottom pressure head 1 is one.
In this preparation method, the quantity of described test specimen top pressure head 2 is one.
In this preparation method, the quantity of described rock core lobe 3 is two
In this preparation method, the quantity of described sleeve 4 is one.
In this preparation method, the quantity of described center pit post 5 is one.
In this preparation method, the quantity of described limit orifice plate 6 is one.
In this preparation method, the quantity of described compacting instrument 7 is one.
In this preparation method, the quantity of described dress mould base 8 is one.
In this preparation method, within described rock core lobe 3 is nested in sleeve 4, and can be free to slide.
In this preparation method, free endwisely slipping along enclosure space in the enclosure space that described test specimen bottom pressure head 1 can form at two rock core lobes 3.
In this preparation method, free endwisely slipping along enclosure space in the enclosure space that described test specimen top pressure head 2 can form at two rock core lobes 3.
In this preparation method, described center pit post 5 can pass through the through hole of test specimen top pressure head 2, can axially be free to slide along through hole.
In this preparation method, described center pit post 5 coordinates with the hole post of test specimen bottom pressure head 1, by coordinating of orifice plate 6 making center pit post 5 vertical with limit.
In this preparation method, free endwisely slipping along enclosure space in the enclosure space that described limit orifice plate 6 can form at two rock core lobes 3.
In this preparation method, described limit orifice plate 6 can be free to slide along center pit post 5.
In this preparation method, described dress mould base 8 is cylinder concave station, and the diameter of two rock core lobe 3 composition cylindrical spaces is identical with the minimum diameter of dress mould base 8.
In this preparation method, the maximum inner diameter of described dress mould base 8 is identical with the columniform maximum gauge that two rock core lobes 3 form, and two rock core lobe 3 combinations can be nested in certain depth in dress mould base.
In this preparation method, the maximum gauge of described dress mould base 8 is identical with sleeve 3 maximum gauges, and it is nested that sleeve 4 can combine by rock core lobe 3, and sleeve 4 can be stood upright on dress mould base 8.
In this preparation method, the maximum gauge of described compacting instrument 7 is slightly less than the diameter of the enclosure space that two rock core lobes 3 form.
In this preparation method, being axially free to slide of the enclosure space that described compacting instrument 7 can form along two rock core lobes 3.
In this preparation method, the cylindrical space that described two rock core lobes 3 form is for the filling of mortar.
In this preparation method, the fit system of 1,2 and two rock core lobes 3 of described test specimen pressure head is clearance fit.
In this preparation method, the fit system of described center pit post 5 and two rock core lobes 3 is clearance fit.
In this preparation method, described test specimen top pressure head 2 is clearance fit with the fit system of center pit post 5.
In this preparation method, described center pit post 5 is clearance fit with the fit system of limit orifice plate 6.
In this preparation method, described rock core lobe 3 is clearance fit with the fit system of sleeve 4.
In this preparation method, described test specimen pressure head wall surface is provided with scale mark.
In this preparation method, the material of described manual simulation's test piece mould is 304 stainless steels.
Fig. 2 is the complete mould schematic diagram of filled with mortar before precharge.In this preparation method, pressure is carried in respectively on two test specimen pressure heads 1,2, and the mortar in rock core lobe 3 is carried out to compacting.Moisture unnecessary in test specimen can flow out the gap between test specimen pressure head 1,2 and rock core lobe 3.
The technical scheme of the drilled dry coring crown with pressure described in the present embodiment comprises the combination in any of each part mentioned above, and the simple change of each part mentioned above assembly or combination are still protection scope of the present invention.
The invention provides a kind of preparation method of manual simulation's rock core test specimen, the preparation method of described manual simulation's rock core test specimen for example comprises: step 1,2,3,4,5,6,7,8.
1, according to the consumption of the proportioning material of manual simulation's rock core test specimen of design, carry out the weighing of material.
2, after weighing, dusty material is dry mixed and is closed, after dusty material stirs, add 1% BAS to carry out wet mixing and close.
3, the mortar being stirred is packed into two cover standard manual simulation rock core moulds, put into after suitable mortar at every turn, with compacting instrument, carry out tamping, in tamping process, by press setter tool rotating down pressing, mortar is spread uniformly into mould.(during tamping, should note: tamping object is to occur bubble in the rock core in order not make to prepare, in order to avoid affect test specimen intensity)
4, filled with mortar to test specimen pressure head is entered after mould certain depth, hold mould, take off dress mould base.
5, in test specimen pressure process, compacting along with test specimen, until reach in abundant consolidation process, need the relatively constant on-load pressure of maintenance, in whole on-load pressure process, the size of on-load pressure and duration are all to determine according to the relevant nature of manual simulation's rock core test specimen.(noting: in on-load pressure process, along with the increase of the on-load pressure value of initial designs, the fixed time also postpones thereupon completely, should guarantee that complete monitoring pressure changes, and keeps relatively constant on-load pressure)
6, after test specimen loads certain hour, repeating step 1～4, carries out the test specimen filling work of next group.When the test specimen filling work of next group completes, the load time reaches one hour.Mould is unloaded, and after test specimen pressure head is screwed out, next group mould repeats step and plays 4.By the mould unloading, place on one side, after fully solidifying, test specimen (while solidifying, should note: place certain hour, note avoiding solar radiation), carry out next step demoulding work.
7, after the test specimen demoulding, first, record the demould time of test specimen, then, place shady and cool place and maintain, wait for when test specimen surface has not had moisture, test specimen is carried out to label.Mould after the demoulding is cleaned up, for the test specimen filling process of next group is prepared.
8, after test specimen is made the demoulding, lucifuge is carried out maintenance in the cool.
More multioperation is all known for those of ordinary skills, repeats no more.
Manual simulation's rock core test piece mould described in this preparation method, for the preparation of manual simulation's rock core test specimen, operation is simple, and prepared rock core test specimen Reality simulation rock core is comparatively similar.
The technical scheme of the manual simulation's rock core test material preparation method described in this preparation method comprises the combination in any of each part mentioned above, and the simple change of each part mentioned above assembly or combination are still protection scope of the present invention.
Claims (16)
1. a center pit manual simulation rock core test material preparation method, it comprises the steps:
A. according to the material mixture ratio setting, carry out material weighing;
B. mortar evenly mixes;
C. mortar is inserted test piece mould;
D. insert in mortar process and constantly with compacting instrument, carry out simple compacting;
E. mortar is filled into after predetermined depth, and top test specimen pressure head is installed;
F. the dress mould base of bottom is unloaded;
G. mould parts being installed is put into add and is presented a theatrical performance as the last item on a programme;
H. mould is loaded to preset pressure;
I. constantly supplement hydraulic pressure, after tensimeter is stable, not in pressurization;
J. after pressure-loaded certain hour, take apart a die;
K. test specimen pressure head is taken off, after test specimen solidifies certain hour, carry out the test specimen demoulding.
1. after the demoulding, test specimen is put in the cool and naturally dried in the shade a period of time.
It is characterized in that, above step is carried out successively.
2. center pit manual simulation rock core test material preparation method as claimed in claim 1, is characterized in that: adopt center pit manual simulation rock core test piece mould to prepare manual simulation's rock core test specimen.
3. center pit manual simulation rock core test material preparation method as claimed in claim 2, is characterized in that: described center pit post is inserted in the pressure head of test specimen bottom, by coordinating of orifice plate making center pit post vertical with limit.
4. center pit manual simulation rock core test material preparation method as claimed in claim 2, is characterized in that: free endwisely slipping along enclosure space in the enclosure space that described test specimen pressure head can form at two rock core lobes.
5. center pit manual simulation rock core test material preparation method as claimed in claim 2, is characterized in that: described dress mould base is cylinder concave station, and the diameter that two rock core lobes form cylindrical spaces is identical with the minimum diameter that fills mould base.
6. center pit manual simulation rock core test material preparation method as claimed in claim 2, it is characterized in that: the maximum inner diameter of described dress mould base is identical with the columniform maximum gauge that two rock core lobes form, two rock core lobe combinations can be nested in certain depth in dress mould base.
7. center pit manual simulation rock core test material preparation method as claimed in claim 5, is characterized in that: the maximum gauge of described dress mould base is identical with the simple maximum gauge of cover, and it is nested that sleeve can combine by rock core lobe, and sleeve can be stood upright on dress mould base.
8. center pit manual simulation rock core test material preparation method as claimed in claim 5, is characterized in that: the maximum gauge of described compacting instrument is slightly less than the diameter of the cylindrical space that two rock core lobes form.
9. center pit manual simulation rock core test material preparation method as claimed in claim 2, is characterized in that: being axially free to slide of the enclosure space that described compacting instrument can form along two rock core lobes.
10. center pit manual simulation rock core test material preparation method as claimed in claim 2, is characterized in that: the cylindrical space that described two rock core lobes form is for the filling of mortar.
11. center pit manual simulation rock core test material preparation methods as claimed in claim 4, is characterized in that: the fit system of described test specimen pressure head and two rock core lobes is clearance fit.
12. center pit manual simulation rock core test material preparation methods as claimed in claim 4, is characterized in that: the fit system of described center pit post and two rock core lobes is clearance fit.
13. center pit manual simulation rock core test material preparation methods as claimed in claim 4, is characterized in that: the fit system of described test specimen top pressure head and center pit post is clearance fit.
14. center pit manual simulation rock core test material preparation methods as claimed in claim 4, is characterized in that: described center pit post is clearance fit with the fit system of limit orifice plate.
15. center pit manual simulation rock core test material preparation methods as claimed in claim 1, is characterized in that: the fit system of described rock core lobe and sleeve is clearance fit.
16. center pit manual simulation rock core test material preparation methods as claimed in claim 2, is characterized in that: described test specimen pressure head wall surface is provided with scale mark.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310415324.7A CN103543049A (en) | 2013-09-06 | 2013-09-06 | Method for preparing center-holed artificial simulation core sample |
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| CN201310415324.7A CN103543049A (en) | 2013-09-06 | 2013-09-06 | Method for preparing center-holed artificial simulation core sample |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103543050A (en) * | 2013-09-06 | 2014-01-29 | 中国石油大学(北京) | Preparation mould for manual simulated rock core test piece with central hole |
| CN103926122A (en) * | 2014-04-11 | 2014-07-16 | 中国石油大学(北京) | Sand rock core as well as manufacture device and manufacture method thereof |
| CN111707555A (en) * | 2020-06-24 | 2020-09-25 | 重庆大学 | Experimental method and experimental device for visualization of hydraulic fracture expansion of particle test piece |
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| CN103543050A (en) * | 2013-09-06 | 2014-01-29 | 中国石油大学(北京) | Preparation mould for manual simulated rock core test piece with central hole |
| CN103926122A (en) * | 2014-04-11 | 2014-07-16 | 中国石油大学(北京) | Sand rock core as well as manufacture device and manufacture method thereof |
| CN111707555A (en) * | 2020-06-24 | 2020-09-25 | 重庆大学 | Experimental method and experimental device for visualization of hydraulic fracture expansion of particle test piece |
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