CN104990758A - Production method of artificial cores having different stratification angles - Google Patents
Production method of artificial cores having different stratification angles Download PDFInfo
- Publication number
- CN104990758A CN104990758A CN201510038315.XA CN201510038315A CN104990758A CN 104990758 A CN104990758 A CN 104990758A CN 201510038315 A CN201510038315 A CN 201510038315A CN 104990758 A CN104990758 A CN 104990758A
- Authority
- CN
- China
- Prior art keywords
- rock
- core
- stratification
- sillar
- angle
- 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
- 238000013517 stratification Methods 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title abstract 4
- 239000011435 rock Substances 0.000 claims abstract description 59
- 238000000034 method Methods 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 22
- 238000005266 casting Methods 0.000 claims abstract description 6
- 230000001276 controlling effect Effects 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000002474 experimental method Methods 0.000 abstract description 4
- 238000005553 drilling Methods 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 16
- 239000004568 cement Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 10
- 239000004576 sand Substances 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000011398 Portland cement Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 235000014121 butter Nutrition 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 230000003020 moisturizing effect Effects 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000011044 quartzite Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000005477 standard model Effects 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
Abstract
The present invention provides a production method of artificial cores having different stratification angles. According to the method, the interface formed by controlling two adjacent material casting is adopted as the rock stratification surface, the strength of the stratification surface is controlled by controlling the time interval between the two adjacent material casting, the casted rock is placed onto the core drilling machine base, and the cores containing different stratification angles can be drilled by adjusting the inclination angle of the core drilling machine base. According to the present invention, the time interval between the previous casting and the next casting is controlled to form the rock block having the horizontal stratification surface, a plurality of the horizontal stratification surfaces can be prefabricated in the same rock block, and the distances between the adjacent stratification surfaces can be unequal; and the disadvantages of difficult natural core production and less number are overcome, especially the natural cores having different stratification angles can be drilled, and the method has advantages of simple core production, and strong experiment repeatability.
Description
Technical field
The present invention relates to a kind of method for making with the synthetic core at different bedding angle.
Background technology
Beded rock mass is that in engineering construction, rock body types is deposited in ubiquitous one tax, owing to experiencing various geological structure in forming process, analysis of stratified rock mass structure and other rock mass have marked difference, and the rock mass containing bed plane shows strong bedding architecture effect.Especially bedded deposit rock, owing to being subject to the impact of bedding architecture, makes its mechanical characteristic and deformation behaviour have obvious anisotropic character, and this feature usually stablizes the important impact of generation to safety of rock engineering.Chinese scholars started to carry out anisotropic shop experiment to containing complete or directed joint fissure rock material since the 20 actual fifties.Research adopts rock material or indoors artificial synroc material or plaster cast to carry out processing the experiment test specimen that acquisition has different bedding angle θ (angle of major principal stress and bed plane normal), with the Changing Pattern of the intensity anisotropy feature of study of rocks material with bedding angle usually.
Owing to there is the structural planes such as bedding, crack, tomography in beded rock mass, thus make Mechanical property show strong heterogeneous body, uncontinuity and anisotropy, the differences of mechanical properties with different structure face rock mass is very large.When bedding angle θ is different, its mechanics parameter such as compressive strength, elastic modulus, Poisson ratio, cohesion, angle of internal friction etc. there will be certain anisotropy.
The impact of research bedding architecture on mechanical properties of rock needs a large amount of standard rock core test piece, mainly large rock mass is transported to indoor, and then carries out producing of standard model when present stage produces the rock core needed for indoor Rock Mechanics Test.Coring in the method scene, cost is high, difficulty of coring is high, and cannot ensure original state and the integrality of sample in rock core transportation.And indoor also depend on the size of rock, lithology and sampling method when drilling through standard rock core, and be difficult to the standard rock core obtaining any bedding angle continuously, quantity of sampling quantity and position are restricted.There is stronger anisotropy in the rock core inside obtained from scene, causes the repeatability of experiment poor.When therefore studying different bedding angle to the affecting of mechanical properties of rock, need the standard rock core using a large amount of physical property close, the features such as the inner fissured structure except bed plane of rock core are close, could control this unitary variant of bedding angle like this.
Summary of the invention
The invention provides a kind of method for making with the synthetic core at different bedding angle, the first prefabricated sillar containing several horizontal stratification faces of the method, spacing between horizontal stratification face can not wait, and then sillar is fixed on rock core drills through on machine base, the angle of inclination of adjusting base drills through rock core, and the inclination angle size of base is the bedding angle of rock core.
For this reason, the technical solution adopted in the present invention is:
The invention provides a kind of method for making with the synthetic core at different bedding angle.The method is by controlling the bed plane of interface as rock mass of adjacent two-step pouring material formation, control the length in the time interval of adjacent twice casting material to control the intensity of bed plane, finally the sillar of building being placed in rock core drills through on machine base, can drill through the rock core containing different bedding angle by the inclination angle regulating rock core to drill through machine base.The method is formed have the sillar in horizontal stratification face by building the time interval before and after controlling, can prefabricated multiple horizontal stratification face in same sillar, and the spacing between adjacent bed plane can not wait.
A kind of method for making with the synthetic core at different bedding angle of the present invention comprises the following steps:
(1) material is selected:
The material of prefabricated sillar is made up of silica sand and cement, and 20-40 object purity quartzite selected by quartz, and cement selects model to be the common portland cement of P.S.A32.5, and water is tap water.
(2) mould is selected:
Mould is made up of a base plate, two side plates and two end plates, and the material of each plate is steel, with bolts between side plate and end plate, each plate is assembled complete after can form rectangular parallelepiped inner chamber.
(3) prefabricated sillar:
By silica sand and cement 1: 1 Homogeneous phase mixing by weight, add water and stir.One deck butter or lubricating oil is smeared at mould inner surface before building, so that the sillar demoulding, then the sand-cement slurry configured is injected mould, carry out fully vibrations to get rid of the gas in mortar, finally move around in the horizontal direction in mould with stragith edge, wherein sand-cement slurry does not fill mould.At ambient temperature maintenance is carried out to sillar, carry out covering with Polypropylence Sheet or tarpaulin and constantly spray watering carrying out moisturizing, moist maintenance regular hour Δ t.
And then repeat said process, so just define bed plane in the interface of two-step pouring material.Repeatable operation said process fills up mould until build material, just can form several horizontal stratification faces in such sillar.
Preferably, the number in described horizontal stratification face is 1-3.
(4) rock core is drilled through:
Be fixed on by prefabricated sillar on the base of rock core machine for placing, regulate rock core to drill through the angle of inclination of machine base, then drill through the rock core under this angle of inclination, the bedding angle of gained rock core is the angle of inclination of base; The inclination angle of adjusting base again, can drill through the rock core at different bedding angle.
Preferably, described rock core drills through the range of tilt angles of machine base is 0 °-90 °.
Compared with prior art, the invention has the beneficial effects as follows: the interface that the present invention is formed by the time interval Δ t controlling adjacent two-step pouring material is as the bed plane of rock mass, and control variable is single, the repeatability of prefabricated sillar high.The present invention can for same bedding angle θ, produce difference build Δ t interval time under sillar; Build Δ t interval time for same, produce the sillar under different bedding angle θ.Then the standard rock core got under both of these case carries out Rock Mechanics Test, analyzes bedding angle θ and builds interval time Δ t to the anisotropic impact of rock material.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the present invention and explain, not delimit the scope of the invention.Wherein,
Fig. 1 be according to of the present invention a kind of there is different bedding angle the method for making of synthetic core and the schematic diagram of prefabricated sillar;
Fig. 2 to be bedding angle of coring of the present invention be schematic diagram of 0 °;
Fig. 3 to be bedding angle of coring of the present invention be schematic diagram of 15 °;
Fig. 4 is the schematic diagram that three bed planes of the present invention are equidistant, bedding of coring angle is 0 °;
Fig. 5 is the schematic diagram of the sillar of bed plane in a certain angle of the present invention;
Drawing reference numeral illustrates:
1, rock stratum 2, bed plane
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated, and sillar is of a size of 20 × 20 × 20cm, and core diameter is 25mm, is highly the right cylinder of 50mm, and its method for making comprises the following steps:
Embodiment 1: Fig. 1 be according to of the present invention a kind of there is different bedding angle the method for making of synthetic core and the schematic diagram of prefabricated sillar, be below the prefabricated process with the sillar in three horizontal stratification faces.
(1) material is selected:
Select silica sand and cement as the material of prefabricated sillar, silica sand selects 20-40 object purity quartzite, and cement selects model to be the common portland cement of P.S.A32.5, and water is tap water;
(2) mould is selected:
Mould is made up of a base plate, two side plates and two end plates, and each sheet material matter is steel, with bolts between side plate and end plate, each plate is assembled complete after can form the square inner chamber of 20 × 20 × 20cm;
(3) prefabricated sillar:
By silica sand and cement 1: 1 Homogeneous phase mixing by weight, add water and stir.One deck butter or lubricating oil is smeared at mould inner surface before building, then the sand-cement slurry configured is injected in mould, the height injecting sand-cement slurry is 8cm, carries out fully vibrations and, to get rid of the gas in mortar, finally moves around in the horizontal direction in mould with stragith edge.At ambient temperature maintenance is carried out to sillar, carry out covering with Polypropylence Sheet or tarpaulin and constantly spray watering carrying out moisturizing, moist maintenance regular hour Δ t, and then be the sand-cement slurry of 4cm to injecting height in mould, repeat said process again, so just define bed plane in the interface of two-step pouring material.And then repeatable operation said process, difference is the height of twice injection cement is 2cm and 6cm, finally can be formed there are three bed planes sillar as shown in Figure 1;
(4) rock core is drilled through:
Be fixed on by prefabricated sillar on the base of rock core machine for placing, the angle of inclination regulating rock core to drill through machine base is 0 °, can drill through the rock core that bedding angle is 0 °, core schematic diagram as shown in Figure 2.
The inclination angle of any adjusting base can drill through the rock core at different bedding angle, and the scope at bedding angle is 0 °-90 °, and can a prefabricated 1-3 bed plane in sillar.
Embodiment 2: a kind of method for making with the synthetic core at different bedding angle, with embodiment 1, difference is, the angle of inclination of adjusting base is 15 °, drills through the rock core that bedding angle is 15 °, cores schematic diagram as shown in Figure 3.
Embodiment 3: a kind of method for making with the synthetic core at different bedding angle, with embodiment 1, difference is, sillar inside has three horizontal stratification faces, and is equally spaced between bed plane, gets core schematic diagram as shown in Figure 4.
Embodiment 4: a kind of method for making with the synthetic core at different bedding angle, with embodiment 1, difference is, sillar inside has two bed planes, and not parallel between two bed planes, gets core schematic diagram as shown in Figure 5.
The foregoing is only the schematic embodiment of the present invention, and be not used to limit scope of the present invention.Any those skilled in the art, equivalent variations done under the prerequisite not departing from design of the present invention and principle and amendment, all should belong to the scope of protection of the invention.
Claims (5)
1. the invention provides a kind of method for making with the synthetic core at different bedding angle.The method is by controlling the bed plane of interface as rock mass of adjacent two-step pouring material formation, control the length in the time interval of adjacent twice casting material to control the intensity of bed plane, finally the sillar of building being placed in rock core drills through on machine base, can drill through the rock core containing different bedding angle by the inclination angle regulating rock core to drill through machine base.The method is formed have the sillar in horizontal stratification face by building the time interval before and after controlling, can prefabricated multiple horizontal stratification face in same sillar, and the spacing between adjacent bed plane can not wait.
2. a kind of method for making with the synthetic core at different bedding angle as claimed in claim 1, is characterized in that, in described same sillar, the time interval of adjacent two-step pouring material can be different.
3. a kind of method for making with the synthetic core at different bedding angle as claimed in claim 1, is characterized in that, the number in described horizontal stratification face is 1-3.
4. a kind of method for making with the synthetic core at different bedding angle as claimed in claim 1, is characterized in that, described in drill through rock core bedding angular region be 0 °-90 °.
5. a kind of method for making with the synthetic core at different bedding angle as claimed in claim 1, is characterized in that, can be not parallel between the bed plane of described sillar inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510038315.XA CN104990758A (en) | 2015-01-22 | 2015-01-22 | Production method of artificial cores having different stratification angles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510038315.XA CN104990758A (en) | 2015-01-22 | 2015-01-22 | Production method of artificial cores having different stratification angles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104990758A true CN104990758A (en) | 2015-10-21 |
Family
ID=54302600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510038315.XA Pending CN104990758A (en) | 2015-01-22 | 2015-01-22 | Production method of artificial cores having different stratification angles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104990758A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092644A (en) * | 2016-06-12 | 2016-11-09 | 三峡大学 | One is two-way rotates freely rock corning machine base and sampling method |
| CN106813979A (en) * | 2017-02-08 | 2017-06-09 | 东北石油大学 | The experimental rig of cracking initiation evolution and connectedness in simulation bedded rock |
| CN108518209A (en) * | 2018-02-14 | 2018-09-11 | 中联煤层气有限责任公司 | Consider that the azimuthal design method of well track is adopted in the coal measures payzone combination of intermediate zone |
| CN108519259A (en) * | 2018-03-12 | 2018-09-11 | 中国石油大学(北京) | A kind of artificial core and its preparation method and application |
| CN108680381A (en) * | 2018-05-16 | 2018-10-19 | 中国地质大学（武汉） | A kind of cylindrical specimens sampling method in the face containing coarse structure |
| CN112177590A (en) * | 2020-08-24 | 2021-01-05 | 山东大学 | Indoor large-scale comprehensive simulation drilling test platform and method for predicting engineering geological parameters |
| CN112504801A (en) * | 2020-11-24 | 2021-03-16 | 河南理工大学 | Device and method for rapidly preparing variable-section layered rock-like material |
| CN114252312A (en) * | 2021-12-03 | 2022-03-29 | 西南石油大学 | Preparation method of grained lamellar shale artificial core |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879548A (en) * | 2012-09-29 | 2013-01-16 | 重庆大学 | Three-direction loading large-scale three-dimensional analog simulation test sampling method |
| CN103048178A (en) * | 2013-01-22 | 2013-04-17 | 中国石油大学(华东) | Method for preparing artificial rock core of simulated carbonate rock for acoustics experiment |
| CN103175720A (en) * | 2013-03-16 | 2013-06-26 | 蒲成志 | Processing technique of irregular rock during indoor drilling coring |
| CN203432816U (en) * | 2013-09-24 | 2014-02-12 | 三峡大学 | Arbitrary dip angle jointed rock specimen coring chassis adjusting device |
| CN103616270A (en) * | 2013-12-01 | 2014-03-05 | 东北石油大学 | Preparation method of lateral accretion interlayer artificial core and special tool |
| CN103910514A (en) * | 2014-03-25 | 2014-07-09 | 中国石油大学(北京) | Artificial conglomerate core as well as preparation method and application thereof |
| CN103983494A (en) * | 2014-06-09 | 2014-08-13 | 中南大学 | Test device of model for manufacturing rock masses containing interlayers and test method thereof |
| CN104034563A (en) * | 2014-06-12 | 2014-09-10 | 中国石油大学(北京) | Preparation method of artificial rock core of jointing shale |
-
2015
- 2015-01-22 CN CN201510038315.XA patent/CN104990758A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879548A (en) * | 2012-09-29 | 2013-01-16 | 重庆大学 | Three-direction loading large-scale three-dimensional analog simulation test sampling method |
| CN103048178A (en) * | 2013-01-22 | 2013-04-17 | 中国石油大学(华东) | Method for preparing artificial rock core of simulated carbonate rock for acoustics experiment |
| CN103175720A (en) * | 2013-03-16 | 2013-06-26 | 蒲成志 | Processing technique of irregular rock during indoor drilling coring |
| CN203432816U (en) * | 2013-09-24 | 2014-02-12 | 三峡大学 | Arbitrary dip angle jointed rock specimen coring chassis adjusting device |
| CN103616270A (en) * | 2013-12-01 | 2014-03-05 | 东北石油大学 | Preparation method of lateral accretion interlayer artificial core and special tool |
| CN103910514A (en) * | 2014-03-25 | 2014-07-09 | 中国石油大学(北京) | Artificial conglomerate core as well as preparation method and application thereof |
| CN103983494A (en) * | 2014-06-09 | 2014-08-13 | 中南大学 | Test device of model for manufacturing rock masses containing interlayers and test method thereof |
| CN104034563A (en) * | 2014-06-12 | 2014-09-10 | 中国石油大学(北京) | Preparation method of artificial rock core of jointing shale |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092644A (en) * | 2016-06-12 | 2016-11-09 | 三峡大学 | One is two-way rotates freely rock corning machine base and sampling method |
| CN106092644B (en) * | 2016-06-12 | 2018-11-02 | 三峡大学 | One kind is two-way to rotate freely rock coring machine base and sampling method |
| CN106813979A (en) * | 2017-02-08 | 2017-06-09 | 东北石油大学 | The experimental rig of cracking initiation evolution and connectedness in simulation bedded rock |
| CN108518209A (en) * | 2018-02-14 | 2018-09-11 | 中联煤层气有限责任公司 | Consider that the azimuthal design method of well track is adopted in the coal measures payzone combination of intermediate zone |
| CN108518209B (en) * | 2018-02-14 | 2020-06-26 | 中联煤层气有限责任公司 | Design method for coal-series production layer combined well hole track azimuth angle considering transition zone |
| CN108519259A (en) * | 2018-03-12 | 2018-09-11 | 中国石油大学(北京) | A kind of artificial core and its preparation method and application |
| CN108680381A (en) * | 2018-05-16 | 2018-10-19 | 中国地质大学（武汉） | A kind of cylindrical specimens sampling method in the face containing coarse structure |
| CN112177590A (en) * | 2020-08-24 | 2021-01-05 | 山东大学 | Indoor large-scale comprehensive simulation drilling test platform and method for predicting engineering geological parameters |
| CN112177590B (en) * | 2020-08-24 | 2022-05-17 | 山东大学 | Indoor large-scale comprehensive simulation drilling test platform and method for predicting engineering geological parameters |
| CN112504801A (en) * | 2020-11-24 | 2021-03-16 | 河南理工大学 | Device and method for rapidly preparing variable-section layered rock-like material |
| CN114252312A (en) * | 2021-12-03 | 2022-03-29 | 西南石油大学 | Preparation method of grained lamellar shale artificial core |
| CN114252312B (en) * | 2021-12-03 | 2023-10-24 | 西南石油大学 | Preparation method of artificial shale core with lamellar shape |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104990758A (en) | Production method of artificial cores having different stratification angles | |
| CN102289980B (en) | Method for preparing preset cracks in hydrofracture simulation specimen | |
| CN104374619B (en) | A kind of preparation method of irregular prismatical joint Fracture Networks model core sample | |
| Zareiyan et al. | Effects of interlocking on interlayer adhesion and strength of structures in 3D printing of concrete | |
| CN103983494B (en) | A kind of containing interlayer class rock mass analogue formation test unit and test method thereof | |
| CN103331817A (en) | 3D (Three-dimensional) printing method of engineering structure | |
| CN106769753B (en) | The trace structure column joint samples preparation method containing chisel for seepage tests | |
| CN109946147B (en) | Preparation method of coal-series composite reservoir fracturing physical simulation test piece | |
| CN110057639B (en) | Sample preparation mold for simulating rock mass with multilayer interlayer dislocation zone and sample preparation method thereof | |
| CN106840800B (en) | A kind of rocks preparation method of sample of the Joint network simulation containing polygonal | |
| CN110907247A (en) | Preparation method of unconventional natural gas well fracturing physical simulation sample | |
| CN110005380B (en) | Heterogeneous shale heterogeneous clustering perforation optimization method | |
| CN105486555A (en) | Method for preparing columnar jointed rock mass model containing blind joints and interlayer shear belts | |
| CN108519259A (en) | A kind of artificial core and its preparation method and application | |
| CN105946090A (en) | Test device for printing model of pile foundation above tunnel or goaf in 3D printing mode and printing method | |
| CN110967237A (en) | Concrete test piece with three-dimensional built-in cracks and manufacturing method thereof | |
| CN105388047A (en) | Preparation method of columnar joint fissure network model rock core samples | |
| Zhang et al. | Research on the fracture grouting mechanism and PFC numerical simulation in loess | |
| CN106948600A (en) | Core column type is without the slurry accurate block masonry of air entrained concrete and its construction method | |
| CN108518209A (en) | Consider that the azimuthal design method of well track is adopted in the coal measures payzone combination of intermediate zone | |
| CN109883789A (en) | A kind of production method of random microfissure rock mass physical model | |
| US20240076885A1 (en) | Additive manufacturing of concrete construction elements | |
| CN106747109B (en) | The method that wet spraying concrete constructs special-shaped mass concrete | |
| CN105223117A (en) | Many gap set geologic unit simulation of infiltration material and preparation method thereof | |
| CN108414335B (en) | Wrapped artificial rock core with different bedding angles and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151021 |