CN105781607A - Method for sealing large-dip-angle downward gas pressure determination drill hole - Google Patents
Method for sealing large-dip-angle downward gas pressure determination drill hole Download PDFInfo
- Publication number
- CN105781607A CN105781607A CN201610118221.8A CN201610118221A CN105781607A CN 105781607 A CN105781607 A CN 105781607A CN 201610118221 A CN201610118221 A CN 201610118221A CN 105781607 A CN105781607 A CN 105781607A
- Authority
- CN
- China
- Prior art keywords
- hole
- angle
- high inclination
- disk
- sealing
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
Abstract
The invention discloses a method for sealing a large-dip-angle downward gas pressure determination drill hole. Through multiple plugging means, the phenomena of gas leakage and liquid leakage caused by that a downward hole is not tightly sealed can be avoided, the hole sealing quality can be improved, and the accuracy of determining gas pressure of a coal seam is guaranteed. The method comprises the following steps that firstly a large-dip-angle drill hole of which the diameter is 75mm is constructed towards a downward target coal seam from a tunnel; two discs are connected to the tail part of an antipriming pipe with bolts, and crude cotton yarns are clamped between the two discs so that a mop shape is formed; a pressure measuring pipe is conveyed into a specified drill hole position, and pebbles and coarse sand, with different particle diameters, are sequentially stuffed in the drill hole; finally the drill hole is filled with hole sealing slurry so that the drill hole is sealed. According to the method disclosed by the invention, the difficult problems that when polyurethane is used for blocking the slurry, the polyurethane is very fast to expand and is not easy to convey to a specified point and the hole sealing length is short are solved, and the difficult problems that the slurry blocking effect is not good, so that the slurry leaks into the hole bottom of the downward hole, and gas pressure measurement or extraction and exploitation of gas are influenced are also solved. The method disclosed by the invention has the advantages that the processes are simple, the reliability is high, the slurry blocking effect is good, the construction efficiency is high, the prices of the hole sealing materials are low, and the method is suitable for being widely used in mines.
Description
Technical field
The present invention relates to a kind of closure under high inclination-angle to the construction technology of pressure measuring drill hole, it is adaptable to underground coal mine measures the sealing of hole work of gas pressure boring.
Background technology
Mine gas is one of big disaster of China's coal-mine five, and gas explosion, coal and gas prominent easily cause the serious accident of the dead group's wound of group, and mine safety production has great threat.2014 editions country's " safety regulations in coal mine " regulations, first coal seam have to measure the gas pressure in coal seam before exploitation, and construction pressure measuring drill hole generally selects upward hole, but owing to condition restriction can only be constructed down to hole pressure measurement in a lot of situation.Under construction after boring, there is many difficulties in drilling and sealing, easily produce gas leakage, the phenomenon of leakage because sealing of hole effect does not reach requirement, if making pressure measurement air chamber by crack equal to external world's connection because closure is not tight, the gas pressure causing measuring of will leaking gas is on the low side, brings huge hidden danger to shaft production；If because of at the bottom of hole block pulp effect official post serosity penetrate into pressure measurement air chamber, it is possible to block end antipriming pipe and affect normal pressure measurement operation, need to change the outfit suction pump by hole prime cement liquid extract out just can normally pressure measurement, add extra work amount.Therefore, can the lower sealing quality to hole be largely fixed and measure coal-bed gas pressure accurately and efficiently, it is necessary to assure its sealing, it is prevented that gas leakage, the phenomenon of leakage.
Specify according to industry standard (" Direct Determination of the coal mine underground coal bed gas pressure of AQ/T1047-2007 "), the hole sealing depth of pressure measuring drill hole should be lengthened as far as possible.At present, time under Coal Exploitation to drilling-draining coal-bed gas or mensuration coal-bed gas pressure, many use materials such as polyurethane or cement mortar carry out sealing of hole.But, during use polyurethane, closing length is general shorter, seals depth ratio shallower, it is impossible to close crack well, it is easy to gas leakage, and operates requirement height for sealing of hole, and sealing of hole cost is high.When using the fluent materials such as cement mortar to carry out sealing of hole, need to be positioned in boring with the charges such as capsule or Thallus Laminariae (Thallus Eckloniae) and carry out block pulp liquid, complicated operation, especially easy hydrops at the bottom of dry Thallus Laminariae (Thallus Eckloniae) filling hole when is used, need to carrying out extra drainage measure, block pulp effect is unstable, affects pressure measurement work.
Therefore, generally not ideal enough to the sealing of hole effect in hole under mine.
Summary of the invention
For prior art above shortcomings, the invention provides under a kind of high inclination-angle to gas pressure measurement drilling and sealing method, the method working procedure is simple, quickness and high efficiency, material is cheap and easy to get, can effectively to carrying out sealing of hole under mine to hole, it is ensured that the precise and high efficiency of gas pressure measurement, it is suitable for promoting the use of in colliery.
In order to solve above-mentioned technical problem, present invention employs following technical scheme:
To gas pressure measurement drilling and sealing method under a kind of high inclination-angle, the method comprises the steps:
1) the high inclination-angle boring of one diameter 75mm of target coal seam construction downwards from tunnel, stops when drilling construction to seat earth 2m place creeping into, exits drilling rod, with the scum silica frost in pressure wind method cleaning high inclination-angle boring；
2) weld the disk I of a diameter 50mm in the 2m position, end of pressure-measuring pipe, the edge of disk I is uniformly arranged the bolt hole of 8 aperture 6mm；
3) another movable disc II identical with disk I in the upper cover of disk I, disk I and movable disc II are bolted, with the coarse cotton yarn of long 40cm through the space bolt, nut on tighting a bolt again makes disk I and movable disc II clamp coarse cotton yarn so that it is in mop shape；
4) pressure-measuring pipe is sent into high inclination-angle boring, and the end antipriming pipe to pressure-measuring pipe stops sending pipe when entering 1m position, coal seam, more outwards extracts 5～10cm out；
5) putting into the stone of particle diameter 15～20mm to high inclination-angle in holing, it is long that stone accounts for 1m hole in high inclination-angle is holed；
6) putting into the stone of particle diameter 5～10mm to high inclination-angle in holing, it is long that stone accounts for 1m hole in high inclination-angle is holed；
7) put into coarse sand, injected volume and step 5 to high inclination-angle in holing) in the weight of stone identical；
8) on high inclination-angle is holed, Grouting Pipe is installed, by grouting pump, high inclination-angle boring is filled sealing of hole serosity, after grout cures, namely complete sealing of hole.
As a preferred embodiment of the present invention, the coarse cotton yarn of clamping 30～40 root length 40cm between the disk I and the movable disc II that are connected with in pressure-measuring pipe, bolt between disk I and movable disc II walked around by coarse cotton yarn, and the free end of coarse cotton yarn is placed in the side of movable disc II.
Compared with prior art, the present invention has the following technical effect that
1, the present invention by pressure-measuring pipe with the fixing coarse cotton yarn of two disks, then filling stone, coarse sand, it is achieved block pulp, last injection hole sealing, so that it is guaranteed that the sealing effectiveness that high inclination-angle is holed.
2, the present invention works to the sealing of hole of gas pressure measuring drill hole suitable in lower, the method adopting " disk fixes coarse cotton yarn+filling stone, coarse sand+injection sealing of hole serosity ", sealing of hole is realized by the means of multiple closure, the airtight quality of boring can be improved, operation is simple, workable, and sealing material is cheap；Expand the shortcoming comparatively fast not easily sending to appointed place when the invention solves by polyurethane block pulp, also overcome that to cause that because block pulp effect is bad serosity leaks into lower to the problem affecting pressure measurement at the bottom of hole, hole.
3, the method quickness and high efficiency, it is possible to effectively to carrying out sealing of hole under mine to hole, it is ensured that the precise and high efficiency of gas pressure measurement, be suitable for promoting the use of in colliery.
Accompanying drawing explanation
Fig. 1 is the schematic diagram under a kind of high inclination-angle to gas pressure measurement drilling and sealing；
Fig. 2 is the top view of integrated disc portions；
The structural representation that Fig. 3 is disk I and movable disc II is bolted.
In accompanying drawing: 1 high inclination-angle boring；2 pressure-measuring pipes；3 antipriming pipes；4 disks I；5 coarse cotton yarns；6 stones；7 stones；8 coarse sands；9 Grouting Pipe；10 grouting pumps；11 sealing of hole serosity；12 Pressure gauges；13 target coal seam；14 movable disc II；15 bolts.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
To gas pressure measurement drilling and sealing method under a kind of high inclination-angle, the schematic diagram of sealing of hole is as it is shown in figure 1, the method comprises the steps:
1) from tunnel, target coal seam 13 is constructed the high inclination-angle boring 1 of a diameter 75mm downwards, stops when drilling construction to seat earth 2m place creeping into, exits drilling rod, clears up high inclination-angle by pressure wind method and holes the scum silica frost in 1.
2) weld the disk I 4 of a diameter 50mm in the 2m position, end of pressure-measuring pipe 2, the edge of disk I 4 is uniformly arranged the bolt hole of 8 aperture 6mm, as shown in Figure 2.
3) another movable disc II 14 identical with disk I 4 in the upper cover of disk I 4, disk I 4 and movable disc II 14 are bolted, as shown in Figure 3, with the coarse cotton yarn 5 of long 40cm through the space bolt, the nut on 15 that tights a bolt again makes disk I 4 and movable disc II 14 clamp coarse cotton yarn 5 so that it is in mop shape.In the present embodiment, the coarse cotton yarn 5 of clamping 30～40 root length 40cm between the disk I 4 and the movable disc II 14 that are connected with in pressure-measuring pipe 2, bolt between disk I 4 and movable disc II 14 walked around by coarse cotton yarn 5, and the free end of coarse cotton yarn 5 is placed in the side of movable disc II 14.
4) every section of 2m of pressure-measuring pipe 2, front end is an antipriming pipe 3, pressure-measuring pipe 2 is sent into high inclination-angle boring 1, stop when end antipriming pipe 3 to pressure-measuring pipe 2 enters 1m position, coal seam sending pipe, outwards extract 5～10cm again out, now disk I 4 and movable disc II 14 and high inclination-angle hole the gap between 1 hole wall by coarse cotton yarn 5 filling, and the top of pressure-measuring pipe 2 is provided with Pressure gauge 12.
5) putting into the stone 6 of particle diameter 15～20mm in high inclination-angle boring 1, it is long that stone accounts for 1m hole in high inclination-angle boring 1.
6) putting into the stone 7 of particle diameter 5～10mm in high inclination-angle boring 1, it is long that stone accounts for 1m hole in high inclination-angle boring 1.
7) hole to high inclination-angle put into coarse sand 8, injected volume and step 5 in 1) in the weight of stone identical.
8) in high inclination-angle boring 1, Grouting Pipe 9 is installed, by grouting pump 10, high inclination-angle boring 1 is filled sealing of hole serosity 11, after grout cures, namely complete sealing of hole.
Under this high inclination-angle to gas pressure measurement drilling and sealing method mainly include boring (such as step 1)), prepare (such as step 2) and step 3)), send pipe (such as step 4)), feed intake (such as step 5), step 6) and step 7)) and slip casting (such as step 8)), before the construction that feeds intake, determine injected volume by test, make two kinds of stones respectively account for about 1m boring long.The natural repose angle of blinding is 40～45 °, therefore can guarantee that work stone rolls into boring bottom more than the boring at 45 ° of inclination angles, rather than gets lodged in boring upper position；Then a certain amount of coarse sand 8 is put into boring.
What finally illustrate is, above example is only in order to illustrate technical scheme and unrestricted, although the present invention being described in detail with reference to preferred embodiment, it will be understood by those within the art that, technical scheme can be modified or equivalent replacement, without deviating from objective and the scope of technical solution of the present invention, it all should be encompassed in the middle of scope of the presently claimed invention.
Claims (2)
1. to gas pressure measurement drilling and sealing method under a high inclination-angle, it is characterised in that the method comprises the steps:
1) high inclination-angle boring (1) of one diameter 75mm of target coal seam (13) construction downwards from tunnel, stop when drilling construction to seat earth 2m place creeping into, exit drilling rod, with the scum silica frost in pressure wind method cleaning high inclination-angle boring (1)；
2) weld the disk I (4) of a diameter 50mm in the 2m position, end of pressure-measuring pipe (2), the edge of disk I (4) is uniformly arranged the bolt hole of 8 aperture 6mm；
3) another movable disc II (14) identical with disk I (4) in the upper cover of disk I (4), disk I (4) and movable disc II (14) are bolted, with the coarse cotton yarn (5) of long 40cm through the space bolt, the nut on (15) that tights a bolt again makes disk I (4) and movable disc II (14) clamp coarse cotton yarn (5) so that it is in mop shape；
4) pressure-measuring pipe (2) being sent into high inclination-angle boring (1), the end antipriming pipe (3) to pressure-measuring pipe (2) stops sending pipe when entering 1m position, coal seam, more outwards extracts 5～10cm out；
5) putting into the stone (6) of particle diameter 15～20mm in holing (1) to high inclination-angle, it is long that stone accounts for 1m hole in high inclination-angle holes (1)；
6) putting into the stone (7) of particle diameter 5～10mm in holing (1) to high inclination-angle, it is long that stone accounts for 1m hole in high inclination-angle holes (1)；
7) hole to high inclination-angle put into coarse sand (8), injected volume and step 5 in (1)) in the weight of stone identical；
8) on high inclination-angle holes (1), Grouting Pipe (9) is installed, by grouting pump (10), high inclination-angle boring (1) is filled sealing of hole serosity (11), after grout cures, namely complete sealing of hole.
2. to gas pressure measurement drilling and sealing method under a kind of high inclination-angle according to claim 1, it is characterized in that, the coarse cotton yarn (5) of clamping 30～40 root length 40cm between the disk I (4) and the movable disc II (14) that are connected with in pressure-measuring pipe (2), bolt between disk I (4) and movable disc II (14) walked around by coarse cotton yarn (5), and the free end of coarse cotton yarn (5) is placed in the side of movable disc II (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610118221.8A CN105781607A (en) | 2016-03-02 | 2016-03-02 | Method for sealing large-dip-angle downward gas pressure determination drill hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610118221.8A CN105781607A (en) | 2016-03-02 | 2016-03-02 | Method for sealing large-dip-angle downward gas pressure determination drill hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105781607A true CN105781607A (en) | 2016-07-20 |
Family
ID=56387733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610118221.8A Pending CN105781607A (en) | 2016-03-02 | 2016-03-02 | Method for sealing large-dip-angle downward gas pressure determination drill hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105781607A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225973A (en) * | 2016-09-12 | 2016-12-14 | 山东科技大学 | Protected seam stress monitoring method based on protective coat extracted and device |
| CN108361002A (en) * | 2018-01-28 | 2018-08-03 | 湖南科技大学 | Drilling cement mortar hole sealing method for gas pressure test of large-depression-angle long-distance coal seam |
| CN111927529A (en) * | 2020-09-11 | 2020-11-13 | 中煤科工集团重庆研究院有限公司 | Hole sealing device and external member for downlink pressure measurement drilling and use method of hole sealing device and external member |
| CN113338847A (en) * | 2021-06-08 | 2021-09-03 | 中国矿业大学(北京) | Hole sealing aggregate, filling bag and hole sealing method for overburden three-zone detection drilling |
| CN114439412A (en) * | 2021-12-30 | 2022-05-06 | 陕西正通煤业有限责任公司 | Rapid hole sealing device and method for large-inclination 75 mm-diameter pressure measuring drill hole in well |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1398600A (en) * | 1972-02-08 | 1975-06-25 | Bergwerksverband Gmbh | Bore-hole closure for a bore hole |
| CN102071961A (en) * | 2010-12-24 | 2011-05-25 | 陕西陕煤韩城矿业有限公司 | Downward gas drainage drill hole and pressure testing drill hole sealing method |
| CN103015984A (en) * | 2012-12-19 | 2013-04-03 | 河南焦煤能源有限公司科学技术研究所 | Method for measuring gas pressure of coal seam by casing high-pressure hole sealing method |
| CN103742129A (en) * | 2013-12-30 | 2014-04-23 | 中国矿业大学 | Method for drilling holes on soft coal seam to measure coal seam gas pressure |
| CN104358561A (en) * | 2014-10-16 | 2015-02-18 | 山东科技大学 | Gas pressure observation system for downstream drill hole in aqueous coal rock |
-
2016
- 2016-03-02 CN CN201610118221.8A patent/CN105781607A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1398600A (en) * | 1972-02-08 | 1975-06-25 | Bergwerksverband Gmbh | Bore-hole closure for a bore hole |
| CN102071961A (en) * | 2010-12-24 | 2011-05-25 | 陕西陕煤韩城矿业有限公司 | Downward gas drainage drill hole and pressure testing drill hole sealing method |
| CN103015984A (en) * | 2012-12-19 | 2013-04-03 | 河南焦煤能源有限公司科学技术研究所 | Method for measuring gas pressure of coal seam by casing high-pressure hole sealing method |
| CN103742129A (en) * | 2013-12-30 | 2014-04-23 | 中国矿业大学 | Method for drilling holes on soft coal seam to measure coal seam gas pressure |
| CN104358561A (en) * | 2014-10-16 | 2015-02-18 | 山东科技大学 | Gas pressure observation system for downstream drill hole in aqueous coal rock |
Non-Patent Citations (1)
| Title |
|---|
| 张智峰 等: "下向穿层测压钻孔排水与封孔方法", 《煤矿安全》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225973A (en) * | 2016-09-12 | 2016-12-14 | 山东科技大学 | Protected seam stress monitoring method based on protective coat extracted and device |
| CN106225973B (en) * | 2016-09-12 | 2017-06-23 | 山东科技大学 | Protected seam stress monitoring method and device based on protective coat extracted |
| CN108361002A (en) * | 2018-01-28 | 2018-08-03 | 湖南科技大学 | Drilling cement mortar hole sealing method for gas pressure test of large-depression-angle long-distance coal seam |
| CN111927529A (en) * | 2020-09-11 | 2020-11-13 | 中煤科工集团重庆研究院有限公司 | Hole sealing device and external member for downlink pressure measurement drilling and use method of hole sealing device and external member |
| CN111927529B (en) * | 2020-09-11 | 2022-03-25 | 中煤科工集团重庆研究院有限公司 | Hole sealing device and external member for downlink pressure measurement drilling and use method of hole sealing device and external member |
| CN113338847A (en) * | 2021-06-08 | 2021-09-03 | 中国矿业大学(北京) | Hole sealing aggregate, filling bag and hole sealing method for overburden three-zone detection drilling |
| CN113338847B (en) * | 2021-06-08 | 2022-02-25 | 中国矿业大学(北京) | Filling bag for overburden three-zone detection drilling and hole sealing method |
| US11459849B1 (en) | 2021-06-08 | 2022-10-04 | China University Of Mining And Technology, Beijing | Filling bag and sealing method for drilled hole for detection in three zones of overburden |
| CN114439412A (en) * | 2021-12-30 | 2022-05-06 | 陕西正通煤业有限责任公司 | Rapid hole sealing device and method for large-inclination 75 mm-diameter pressure measuring drill hole in well |
| CN114439412B (en) * | 2021-12-30 | 2024-03-12 | 陕西正通煤业有限责任公司 | Quick hole sealing device and method for hole opening of underground large-dip-angle 75 mm-diameter pressure measurement drilling hole |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105781607A (en) | Method for sealing large-dip-angle downward gas pressure determination drill hole | |
| AU2020101047A4 (en) | Method for filling underground cavity in bedrock by grouting and hydraulic filling device | |
| CN103924945B (en) | The high-pressure slip-casting technique of rich water weathering fissures rock stratum under the Moderate and Thick Unconsolidated Formation of colliery | |
| CN103742129B (en) | The method of weak seam measuring gas pressure of coal bed by drilling hole | |
| CN104763428B (en) | Grading And Zoning grouting and reinforcing karst collapse col umn makes the method for the fully mechanized coal face soft karst collapse col umn of straight mistake | |
| CN102071961B (en) | Downward gas drainage drill hole and pressure testing drill hole sealing method | |
| CN104652496B (en) | A kind of diaphram wall percolating water detection method | |
| CN103015984A (en) | Method for measuring gas pressure of coal seam by casing high-pressure hole sealing method | |
| CN102536158B (en) | Uphole sealing method | |
| CN210396723U (en) | Gas pressure measuring device for double-hole pressure measurement | |
| CN109915070A (en) | The down-hole coal bed test gas pressure hole sealing device of one kind and method | |
| CN110469332B (en) | Advanced support consolidation method for tunnel penetrating through debris flow accumulation body | |
| CN110107284B (en) | Drilling and testing system and method for detecting height of water flowing fractured zone through water pressure | |
| CN111456721B (en) | Multistage airbag rapid hole sealing gas pressure measuring device and measuring method | |
| CN106050302A (en) | Constructing system and method for coal mine permanent sealing wall | |
| CN103939143B (en) | The assay method of heading zone of fracture influence basin and device thereof | |
| CN109138904A (en) | Twin packer delamination pour slurry antipriming and its application method | |
| CN104389587A (en) | Quick measurement method of coal seam gas pressure | |
| CN105952492A (en) | A method for high-gas coal seam working surface drilling and exploitation gas pre-drainage | |
| CN108756910A (en) | A kind of intelligent early-warning formula earth pressure balanced shield, EPBS pre-grouting device and construction method | |
| CN114108609B (en) | Construction method for multistage segmented precise filling and deep pile forming in goaf | |
| CN209195349U (en) | Twin packer delamination pour slurry antipriming | |
| CN105781606A (en) | Method for sealing large-dip-angle downward coal-seam-penetrating gas extraction-drainage drill hole | |
| CN205605165U (en) | A slip casting pipe for gushing prevent string thick liquid and overfall in gushing water slip casting punishment | |
| CN203035203U (en) | Pressure-isolating, permeating and cementing grouting device of borehole casing for roadway water-surrounded broken rock |
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 |
Application publication date: 20160720 |
|
| RJ01 | Rejection of invention patent application after publication |