CN103543047A - Preparation method for standard manual simulated rock core test piece - Google Patents
Preparation method for standard manual simulated rock core test piece Download PDFInfo
- Publication number
- CN103543047A CN103543047A CN201310415297.3A CN201310415297A CN103543047A CN 103543047 A CN103543047 A CN 103543047A CN 201310415297 A CN201310415297 A CN 201310415297A CN 103543047 A CN103543047 A CN 103543047A
- Authority
- CN
- China
- Prior art keywords
- rock core
- test specimen
- manual simulation
- preparation
- test piece
- 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.)
- Pending
Links
Images
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a preparation method for a standard manual simulated rock core test piece. The preparation method for the standard manual simulated rock core test piece comprises the following steps: (1) selecting ratios of materials of the manual simulated rock core test piece and preparing the materials; (2) feeding mortar prepared from mixed manual simulated materials into a testing mould; (3) pressurizing a manual test piece which is filled into the mould, wherein a pressurizing pressure and pressurizing time depend on the mechanical property of a real rock core simulated by the test piece; (4) carrying out de-molding work on the pressurized manual simulated rock core test piece; and (5) drying the de-molded manual simulated rock core test piece in the shade naturally. The preparation method is simple and convenient to operate; three mechanical properties including compressive strength, elasticity modulus and Poisson ratio of a soft rock can be simulated; the manual simulated test piece is prepared by the preparation method provided by the invention.
Description
Technical field
The present invention relates to the preparation method of manual simulation's rock core test specimen, compressive strength, elastic modulus and three kinds of mechanical properties of Poisson ratio that particularly can simulate soft rock.
Background technology
Now, in the exploratory development process of the land and marine oil and gas of China, the situation that runs into crumbly rock is more and more.But because the mechanical strength of crumbly rock is little, distortion is large, thing followed problem is the difficult acquisition of test sample, or the excessive test sample that makes of disturbance has lost representativeness during sampling.For cementing a little less than these, stratiform or fissured rock, the success ratio of coring is extremely low, 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 the preparation method of manual simulation's rock core test specimen of the true soft rock of a kind of laboratory simulation for above-mentioned defect.
To achieve these goals, a first aspect of the present invention provides a kind of preparation standard manual simulation rock core test piece mould.
According to a set of standard manual simulation's rock core test piece mould of first aspect present invention, comprise test specimen pressure head, sleeve, rock core lobe, dress mould base, compacting instrument, wherein rock core lobe is that encapsulation is in sleeve, in the cylindrical space that test specimen pressure head encapsulation forms at rock core lobe, after rock core lobe and the combination of test specimen 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, pack test specimen pressure head into, from bottom, take out dress mould base.
Preferably, the quantity of described test specimen pressure head is two.
Preferably, the quantity of described rock core lobe is two
Preferably, the quantity of described sleeve is one.
Preferably, the quantity of described mold base is one.
Preferably, the quantity of described compacting instrument is one.
Preferably, within described rock core lobe is nested in sleeve, and can be free to slide.
Preferably, free endwisely slipping along cylindrical space in the cylindrical 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 cylindrical 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 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 a set of standard manual simulation's rock core test piece mould, 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 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.
L. 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 standard manual simulation's rock core test piece mould of first aspect present invention;
Fig. 2 is the complete mould schematic diagram of filled with mortar before precharge.
In Fig. 1, Fig. 2, numeral represents respectively:
1-test specimen pressure head 2-rock core lobe 3-sleeve
4-dress mould base 5-compacting instrument
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 standard manual simulation's rock core test piece mould of first aspect present invention, in this preparation method, a set of standard manual simulation's rock core test piece mould comprises test specimen pressure head 1, rock core lobe 2, sleeve 3, mold base 4, compacting instrument 5.
In this preparation method, the quantity of described test specimen pressure head 1 is two.
In this preparation method, the quantity of described rock core lobe 2 is two
In this preparation method, the quantity of described sleeve 3 is one.
In this preparation method, the quantity of described dress mould base 4 is one.
In this preparation method, the quantity of described compacting instrument 5 is one.
In this preparation method, within described rock core lobe 2 is nested in sleeve 3, and can be free to slide.
In this preparation method, free endwisely slipping along cylindrical space in the cylindrical space that described test specimen pressure head 1 can form at two rock core lobes 2.
In this preparation method, described dress mould base 5 is cylinder concave station, and the diameter of two rock core lobe 2 composition cylindrical spaces is identical with the minimum diameter of dress mould base 5.
In this preparation method, the maximum inner diameter of described dress mould base 5 is identical with the columniform maximum gauge that two rock core lobes 2 form, and two rock core lobe 2 combinations can be nested in certain depth in dress mould base.
In this preparation method, the maximum gauge of described dress mould base 5 is identical with sleeve 3 maximum gauges, sleeve can 3 nested by 2 combinations of rock core lobe, sleeve 3 can be stood upright on dress mould base 5.
In this preparation method, the maximum gauge of described compacting instrument 5 is slightly less than the diameter of the cylindrical space that two rock core lobes 3 form.
In this preparation method, being axially free to slide of the cylindrical space that described compacting instrument 5 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 described test specimen pressure head 1 and two rock core lobes 3 is clearance fit.
In this preparation method, described rock core lobe 3 is clearance fit with the fit system of sleeve 2.
In this preparation method, described mold base 4 is clearance fit with the fit system of rock core lobe 3, sleeve 2.
In this preparation method, described test specimen pressure head 1 wall surface is provided with scale mark.
In this preparation method, the material of described test specimen pressure head 1, sleeve 2, rock core lobe 3, mold base 4 and compacting instrument 5 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, 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 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 (9)
1. a standard 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.
L. 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. standard manual simulation rock core test material preparation method as claimed in claim 1, is characterized in that: adopt manual simulation's rock core test piece mould to prepare manual simulation's rock core test specimen.
3. standard manual simulation rock core test material preparation method as claimed in claim 2, is characterized in that: the mould of preparing of described manual simulation's rock core test specimen comprises test specimen pressure head, rock core lobe, sleeve, dress mould base and compacting instrument.
4. standard manual simulation rock core test material preparation method as claimed in claim 3, is characterized in that: being axially free to slide of the cylindrical space that described compacting instrument can form along two rock core lobes.
5. standard manual simulation rock core test material preparation method as claimed in claim 3, is characterized in that: the cylindrical space that described two rock core lobes form is for the filling of mortar.
6. standard manual simulation rock core test material preparation method 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.
7. standard manual simulation rock core test material preparation method as claimed in claim 4, is characterized in that: the fit system of described rock core lobe and sleeve is clearance fit.
8. standard manual simulation rock core test material preparation method as claimed in claim 1, is characterized in that: described test specimen pressure head wall surface is provided with scale mark.
9. standard manual simulation rock core test material preparation method as claimed in claim 1, is characterized in that: 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.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310415297.3A CN103543047A (en) | 2013-09-06 | 2013-09-06 | Preparation method for standard manual simulated rock core test piece |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310415297.3A CN103543047A (en) | 2013-09-06 | 2013-09-06 | Preparation method for standard manual simulated rock core test piece |
Publications (1)
Publication Number | Publication Date |
---|---|
CN103543047A true CN103543047A (en) | 2014-01-29 |
Family
ID=49966718
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201310415297.3A Pending CN103543047A (en) | 2013-09-06 | 2013-09-06 | Preparation method for standard manual simulated rock core test piece |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN103543047A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103543048A (en) * | 2013-09-06 | 2014-01-29 | 中国石油大学(北京) | Preparation mould for standard manual simulated rock core test piece |
CN104111189A (en) * | 2014-07-31 | 2014-10-22 | 中国石油天然气股份有限公司 | Rock core preparation method |
CN104198243A (en) * | 2014-08-29 | 2014-12-10 | 中国石油天然气股份有限公司 | Preparation method of artificial rock core for simulating permafrost region hydrate stratum skeleton |
CN105784450A (en) * | 2016-05-17 | 2016-07-20 | 重庆大学 | Manufacturing device and method for test pieces for coal rock engineering simulation experiment |
CN111855339A (en) * | 2019-04-29 | 2020-10-30 | 中国石油化工股份有限公司 | Frozen soil rock core preparation device and method |
CN114166614A (en) * | 2021-12-16 | 2022-03-11 | 广西大学 | Bidirectional movable manufacturing die and method for similar material rock sample in diagenetic geothermal environment |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2260432A1 (en) * | 1974-02-13 | 1975-09-05 | Gv Dorozh | Press for forming bitumen bound macadam samples - has mechanism adjusting eccentricity of load compensating shaft |
US4524604A (en) * | 1983-02-25 | 1985-06-25 | Vondran Gary L | Concrete permeability testing device and method |
CN201525076U (en) * | 2009-11-04 | 2010-07-14 | 青岛石大石仪科技有限责任公司 | Artificial cement core preparing device |
CN202208114U (en) * | 2011-08-09 | 2012-05-02 | 六盘水师范学院 | Simple hydraulic press-forming machine |
CN202599725U (en) * | 2012-04-25 | 2012-12-12 | 广西大学 | Disturbed soil cutting ring sample-pressing device |
JP5111673B1 (en) * | 2012-04-18 | 2013-01-09 | 株式会社フジコーポレーション | Form for creating test piece for test of elution of harmful substances contained in inorganic waste or soil, and method of using the same |
CN202741491U (en) * | 2012-06-15 | 2013-02-20 | 浙江吉利汽车研究院有限公司杭州分公司 | Flattening device |
CN202846660U (en) * | 2012-10-25 | 2013-04-03 | 中国海洋石油总公司 | Simple manufacture device for artificial cores |
CN203045939U (en) * | 2012-12-10 | 2013-07-10 | 中国石油大学(华东) | Annulated-column-shaped corestone preparing device |
CN203101653U (en) * | 2013-02-26 | 2013-07-31 | 珠海出入境检验检疫局检验检疫技术中心 | Jacket-type sample swager for radionuclide Gamma energy spectrum analysis |
CN103244113A (en) * | 2013-05-08 | 2013-08-14 | 常州大学 | Hollow core model manufacturing device |
CN103543048A (en) * | 2013-09-06 | 2014-01-29 | 中国石油大学(北京) | Preparation mould for standard manual simulated rock core test piece |
-
2013
- 2013-09-06 CN CN201310415297.3A patent/CN103543047A/en active Pending
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2260432A1 (en) * | 1974-02-13 | 1975-09-05 | Gv Dorozh | Press for forming bitumen bound macadam samples - has mechanism adjusting eccentricity of load compensating shaft |
US4524604A (en) * | 1983-02-25 | 1985-06-25 | Vondran Gary L | Concrete permeability testing device and method |
CN201525076U (en) * | 2009-11-04 | 2010-07-14 | 青岛石大石仪科技有限责任公司 | Artificial cement core preparing device |
CN202208114U (en) * | 2011-08-09 | 2012-05-02 | 六盘水师范学院 | Simple hydraulic press-forming machine |
JP5111673B1 (en) * | 2012-04-18 | 2013-01-09 | 株式会社フジコーポレーション | Form for creating test piece for test of elution of harmful substances contained in inorganic waste or soil, and method of using the same |
CN202599725U (en) * | 2012-04-25 | 2012-12-12 | 广西大学 | Disturbed soil cutting ring sample-pressing device |
CN202741491U (en) * | 2012-06-15 | 2013-02-20 | 浙江吉利汽车研究院有限公司杭州分公司 | Flattening device |
CN202846660U (en) * | 2012-10-25 | 2013-04-03 | 中国海洋石油总公司 | Simple manufacture device for artificial cores |
CN203045939U (en) * | 2012-12-10 | 2013-07-10 | 中国石油大学(华东) | Annulated-column-shaped corestone preparing device |
CN203101653U (en) * | 2013-02-26 | 2013-07-31 | 珠海出入境检验检疫局检验检疫技术中心 | Jacket-type sample swager for radionuclide Gamma energy spectrum analysis |
CN103244113A (en) * | 2013-05-08 | 2013-08-14 | 常州大学 | Hollow core model manufacturing device |
CN103543048A (en) * | 2013-09-06 | 2014-01-29 | 中国石油大学(北京) | Preparation mould for standard manual simulated rock core test piece |
Non-Patent Citations (5)
Title |
---|
于宝 等: ""混合泥质砂岩人造岩心的设计和制作"", 《大庆石油学院学报》 * |
张至丰 等: "《机械工程材料及成形工艺基础》", 30 April 2007, 北京:机械工业出版社 * |
机械工业部仪器仪表工业局: "《仪器仪表工人技术培训教材 宝石轴承加工》", 31 May 1988, 北京:机械工业出版社 * |
邱正松 等: ""泥页岩稳定性评价中人工模拟岩样的制备"", 《油田化学》 * |
高积强 等: "《无机非金属材料制备方法》", 30 September 2009, 西安:西安交通大学出版社 * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103543048A (en) * | 2013-09-06 | 2014-01-29 | 中国石油大学(北京) | Preparation mould for standard manual simulated rock core test piece |
CN104111189A (en) * | 2014-07-31 | 2014-10-22 | 中国石油天然气股份有限公司 | Rock core preparation method |
CN104111189B (en) * | 2014-07-31 | 2017-01-11 | 中国石油天然气股份有限公司 | Rock core preparation method |
CN104198243A (en) * | 2014-08-29 | 2014-12-10 | 中国石油天然气股份有限公司 | Preparation method of artificial rock core for simulating permafrost region hydrate stratum skeleton |
CN105784450A (en) * | 2016-05-17 | 2016-07-20 | 重庆大学 | Manufacturing device and method for test pieces for coal rock engineering simulation experiment |
CN111855339A (en) * | 2019-04-29 | 2020-10-30 | 中国石油化工股份有限公司 | Frozen soil rock core preparation device and method |
CN114166614A (en) * | 2021-12-16 | 2022-03-11 | 广西大学 | Bidirectional movable manufacturing die and method for similar material rock sample in diagenetic geothermal environment |
CN114166614B (en) * | 2021-12-16 | 2024-01-02 | 广西大学 | Two-way movable manufacturing die and method for rock sample of similar material in diagenetic geothermal environment |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN103543048A (en) | Preparation mould for standard manual simulated rock core test piece | |
CN103543047A (en) | Preparation method for standard manual simulated rock core test piece | |
CN105628470B (en) | A kind of preparation method of the perforation crack rock sample based on 3D printing technique | |
CN103926122B (en) | To shake out rock core and making apparatus thereof and method for making | |
CN105651571B (en) | A kind of preparation method of the intermittent fracture rock mass sample based on 3D printing technique | |
CN103543050A (en) | Preparation mould for manual simulated rock core test piece with central hole | |
CN101839831B (en) | Bond strength testing method of concrete rough aggregate interface | |
CN203045939U (en) | Annulated-column-shaped corestone preparing device | |
CN104198233B (en) | Three axle remoulded sample forming method and devices thereof | |
CN103868772A (en) | Preparation method of artificial rock core for rock drillability testing | |
CN110108529A (en) | A kind of rocks-concrete assembly preparation method of sample | |
CN105890961B (en) | A kind of method for making sample and pressure setting of raw-soil sill | |
CN107063808A (en) | A kind of compaction apparatus and drawing method for making rocks sample | |
CN103454127B (en) | Similar material for small and medium solid-fluid coupled model test and preparation method thereof | |
CN104502167A (en) | Multi-functional mold and method for preparing artificial core | |
CN108956273A (en) | Hydraulic Fracturing of Rock Mass extends visual experimental rig under a kind of simulation complex stress | |
CN108844799B (en) | Soil block sample preparation device | |
CN103543049A (en) | Method for preparing center-holed artificial simulation core sample | |
CN106018029B (en) | A kind of experimental provision and its experimental method making transparent rock mass cylinder sample | |
CN203965204U (en) | The making apparatus of rock core shakes out | |
CN104990839B (en) | A kind of sealing material permeability test device of mist containing sand | |
CN1854734B (en) | Testing mould system and its operating method for triaxial experimental disturbed soil testing piece | |
CN105758739A (en) | Method for obtaining duration curve of early age shear strength of concrete intermittent surface | |
CN103543046A (en) | Preparation mould for manual simulated rock core test piece with two plane sides | |
CN103543051A (en) | Preparation method for manual simulated rock core test piece with two plane sides |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140129 |