CN114776886B - Method for replacing filling pipe in vertical steel sleeve - Google Patents
Method for replacing filling pipe in vertical steel sleeve Download PDFInfo
- Publication number
- CN114776886B CN114776886B CN202210536065.2A CN202210536065A CN114776886B CN 114776886 B CN114776886 B CN 114776886B CN 202210536065 A CN202210536065 A CN 202210536065A CN 114776886 B CN114776886 B CN 114776886B
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- Prior art keywords
- filling pipe
- pipe
- vertical steel
- filling
- lifting
- Prior art date
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 61
- 239000010959 steel Substances 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000005520 cutting process Methods 0.000 claims abstract description 6
- 238000005553 drilling Methods 0.000 claims description 9
- 239000004519 grease Substances 0.000 claims description 8
- 239000000945 filler Substances 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 5
- 210000005069 ears Anatomy 0.000 claims description 4
- 230000001050 lubricating effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
- F16L1/032—Laying or reclaiming pipes on land, e.g. above the ground in the ground the pipes being continuous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/12—Driving gear incorporating electric motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D2700/00—Capstans, winches or hoists
- B66D2700/01—Winches, capstans or pivots
- B66D2700/0183—Details, e.g. winch drums, cooling, bearings, mounting, base structures, cable guiding or attachment of the cable to the drum
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Earth Drilling (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a method for replacing a filling pipe in a vertical steel sleeve, which comprises the following steps: the supporting pipe is inclined to be supported into the small chamber to serve as a supporting rod, the top end of the supporting rod is connected with the antiskid plate, the antiskid plate abuts against the side wall of the small chamber, and a bolt hole at the upper part of the supporting rod is connected with the hoisting hoist through a jack rope; lowering a lifting hook on a lifting hoist to the position above the pipe orifice of the filling pipe; the lifting jack rope connected with the lifting hook is connected with the lugs protruding from the two ends of the flange of the upper pipe orifice of the filling pipe, and the filling pipe is slowly pulled up to the maximum height which can be lifted by the electric hoist by the hoisting hoist; a flange is fastened below the exposed part of the filling pipe, and the filling pipe is cut along the upper part of the flange; the lifting, fastening and cutting processes are repeated until all the filling pipes are pulled out of the vertical steel casing. The invention stably takes out and replaces the plastic filling pipe in the steel sleeve in the limited underground working space, thereby ensuring the safe and efficient operation of the filling pipe.
Description
Technical Field
The invention relates to the technical field of construction of underground filling systems of metal mines, in particular to a method for replacing filling pipes in vertical steel sleeves.
Background
In recent years, with the environmental protection concept of high quality development and green development, underground mines exploited by a filling method are increasing, and an economic filling mode of the underground mines exploited by the filling method is self-flowing filling, and the self-flowing filling method conveys filling slurry to a working surface to be reached by utilizing gravity according to the height difference between exploitation levels. The vertical pipeline arrangement cost of the gravity flow filling method is the minimum form of drilling and arranging pipes, a steel sleeve is arranged in the drilling to ensure the stability of the drilling, and a wear-resistant plastic pipe is arranged in the steel sleeve to serve as a filling pipe. The filling pipe is increased along with the use time, and the filling pipe needs to be replaced in a certain period so as to ensure the smoothness and the safety of the pipeline. Therefore, a method for replacing the filling pipe (namely a longer plastic pipeline) in the vertical steel sleeve is required to be provided, the filling pipe in the steel sleeve is taken out, a new filling pipe is replaced, and safe and efficient operation of the filling pipe is ensured.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for replacing a filling pipe in a vertical steel sleeve, which aims at overcoming the defects of the prior art, and the plastic filling pipe in the steel sleeve is stably taken out and replaced in a limited underground working space, so that the safe and efficient operation of the filling pipe is ensured.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
a method of replacing a filler pipe within a vertical steel casing, comprising:
step (1), supporting the supporting pipe into the small chamber to serve as a supporting rod, wherein the top end of the supporting rod is fixedly connected with a antiskid plate, the antiskid plate abuts against the side wall of the small chamber, and a bolt hole is reserved at the upper part of the supporting rod and is connected with a hoisting hoist through a jack rope;
step (2), a lifting hook on the lifting hoist is lowered to the position above the pipe orifice of the filling pipe, and the lifting hook is connected with a jack rope;
step (3), selecting a flange matched with the filling pipe in the vertical steel sleeve, and fastening the flange on the upper pipe orifice of the filling pipe;
step (4), connecting a lifting rope connected with a lifting hook with lugs protruding from two ends of a flange of an upper pipe orifice of the filling pipe, and slowly lifting the filling pipe to the maximum height capable of being lifted by the lifting hoist by using the lifting hoist;
step (5), fastening a flange below the exposed part of the filling pipe lifted by the lifting hoist, cutting the filling pipe along the upper part of the flange, and separating the exposed filling pipe from the filling pipe in the vertical steel sleeve, wherein the ears protruding from the two ends of the flange of the pipe orifice of the filling pipe in the vertical steel sleeve are clamped on the vertical steel sleeve; the exposed filling pipe which is cut off is marked as a sub filling pipe;
step (6), loosening the flange of the upper pipe orifice of the sub filling pipe and the jack rope connected with the lifting hook, connecting the jack rope connected with the lifting hook with the lugs protruding from the two ends of the flange of the upper pipe orifice of the filling pipe in the vertical steel sleeve, and slowly lifting the filling pipe to the maximum height capable of being lifted by the lifting hoist by using the lifting hoist;
and (7) repeating the step (5) and the step (6) until all the filling pipes are pulled out of the vertical steel sleeve.
As a further improved technical scheme of the invention, the method further comprises the following steps:
step (8), the vertical steel sleeve is hollow, one end of a new filling pipe is pulled to a drilling position, and the whole filling pipe is horizontally placed along a working site;
step (9), smearing lubricating grease on the outer layer of the front part of the filling pipe, enabling the pipe orifice of the filling pipe to be downward, erecting the front end of the filling pipe, and manually keeping the rear end of the filling pipe fixed;
and (10) slowly lowering the pipe orifice of the filling pipe along the inner wall of the vertical steel sleeve by utilizing the self gravity of the filling pipe, manually forwarding the filling pipe according to the instruction, and finally loading a new filling pipe into the vertical steel sleeve.
As a further improved technical scheme of the invention, the length of the small chamber is 1.6m, the width is 1.6m, and the height is 7m; the supporting tube is a 5 inch seamless steel tube with the length of 5 m.
As a further improved technical scheme of the invention, the antiskid plate is a 0.2 m-0.2 m steel plate, and the top end of the supporting rod is connected with the antiskid plate in a welding mode.
As a further improved technical scheme of the invention, in the step (1), a bolt hole is reserved at the upper part of the supporting rod, the bolt is inserted into the bolt hole, circles at two ends of the jack rope are respectively connected to the bolt through a lock catch, and the hoisting hoist is hung on the jack rope.
As a further improved technical scheme of the invention, the flange is an internal thread type flange.
As a further improved technical solution of the present invention, the grease is a calcium grease.
As a further improved technical scheme of the invention, the hoisting hoist adopts an electric hoist.
The beneficial effects of the invention are as follows:
the invention uses the simple tool to take the filling pipe out of the steel sleeve, avoids potential safety hazards such as abrasion and blockage caused by long-term use of the filling pipe, and greatly improves the stability and reliability of the filling system. Therefore, the most economical self-flow conveying drilling type arrangement mode can be selected when the filling method is designed, and the method has important significance for underground mines exploited by domestic filling methods. The method has the advantages of simple principle, low cost, easy popularization, safety and reliability, strong adaptability and positive significance for guaranteeing the safe and reliable operation of the mine filling system.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention.
Fig. 2 is a schematic diagram showing connection of the bolt hole at the upper part of the support rod and the jack rope.
Fig. 3 is a state diagram of a new filling pipe being installed into a vertical steel casing.
Detailed Description
The following is a further description of embodiments of the invention, with reference to the accompanying drawings:
the embodiment provides a method for replacing a filling pipe in a vertical steel sleeve, which comprises the following steps:
step (1) is shown in fig. 1, a lifting facility is built by using a limited space, a small chamber with the upper length of 1.6m, the width of 1.6m and the total height of 7m is used for filling drilling construction, a supporting pipe 1 is obliquely supported into the small chamber to be used as a supporting rod, the top end of the supporting rod abuts against the side wall of the small chamber and faces to a filling pipe 8 to be lifted below, the top end of the supporting rod is welded with a antiskid plate 2, a bolt hole is reserved at the upper part of the supporting rod, a bolt 3 is inserted into the bolt hole, circles at two ends of a jack rope 4 (by adopting a jack steel wire rope) are respectively connected to the bolt 3 through a lock catch 9, the lifting hoist adopts an electric hoist 5, and the electric hoist 5 is hung on the jack rope 4; the support tube 1 is a 5 inch seamless steel tube with the total length of 5 m. The antiskid plate 2 adopts a 0.2 m-0.2 m steel plate.
And (2) calculating the total lifting weight according to the total length and the material of the pipeline to be replaced, wherein the filling pipe 8 to be lifted in the embodiment is a 4-inch plastic pipe, the total length is 50m, and the total weight is 1.5t, so that the 3t electric hoist 5 is selected. After the electric hoist 5 is fixed, the lifting hook on the electric hoist 5 is lowered to a proper position above the pipe orifice of the filling pipe 8, and the lifting hook is connected with the jack rope 4.
And (3) selecting an internal thread type flange 7 matched with the filling pipe 8 in the vertical steel sleeve 6, fastening the flange 7 on the upper pipe orifice of the filling pipe 8, and increasing friction force by internal threads to avoid sliding in the lifting process.
And (4) sleeving two ends of a lifting jack rope 4 connected with the lifting hook into protruding ears at two ends of a flange 7 at the upper pipe orifice of the filling pipe 8, and slowly pulling the filling pipe 8 to the maximum height capable of being lifted by the electric hoist 5 by using the electric hoist 5.
Step (5), fastening a flange 7 at the lowest part of the exposed part of the filling pipe 8 lifted by the electric hoist 5, cutting the filling pipe 8 along the upper part of the flange 7 by using a handheld cutter, so that the filling pipe 8 at the exposed part is separated from the filling pipe 8 in the vertical steel sleeve 6, and at the moment, the lugs protruding from the two ends of the flange 7 at the pipe orifice of the filling pipe 8 in the vertical steel sleeve 6 are clamped on the vertical steel sleeve 6, so that the filling pipe 8 does not fall down; the exposed filling tube 8 that is cut out is denoted as a sub filling tube 8.
Step (6), loosening the flange 7 of the upper pipe orifice of the sub filling pipe 8 and the lifting jack rope 4 connected with the lifting hook, sleeving two ends of the lifting jack rope 4 connected with the lifting hook into the protruding ears at two ends of the flange 7 of the upper pipe orifice of the filling pipe 8 in the vertical steel sleeve 6, and slowly pulling the filling pipe 8 to the maximum height capable of being lifted by the electric hoist 5 by using the electric hoist 5.
Step (7), repeating the process of lifting, fastening and cutting, i.e. repeating step (5) and step (6), until all filling pipes 8 are pulled out of the vertical steel casing 6.
And (8) at the moment, the vertical steel sleeve 6 is hollow, the surrounding site is cleaned, one end of a new filling pipe 8 with the length of 50m is pulled to a drilling position, and the whole filling pipe 8 is horizontally placed along the working site.
And (9) smearing lubricating grease on the front outer layer of a new filling pipe 8, namely smearing 3# lime grease on the front 2m outer layer of the new filling pipe 8, enabling the pipe orifice of the new filling pipe 8 to be downward, erecting the front end of the new filling pipe 8, manually fixing the rear end of the filling pipe 8, and forward conveying according to instructions, wherein the state of the new filling pipe 8 is that the front end is vertically downward, the rear end is horizontal, 90-degree smooth bending exists between the vertical section and the horizontal section of the filling pipe 8, and the arrow direction of the figure 3 is the moving direction of the new filling pipe 8.
And (10) slowly lowering the pipe orifice of the new filling pipe 8 along the inner wall of the vertical steel sleeve 6 by utilizing the self gravity of the new filling pipe 8, and forwarding the filling pipe 8 by a rear person according to a command, wherein the new filling pipe 8 is finally installed in the vertical steel sleeve 6. If the friction force in the steel sleeve 6 is larger, two ox-horn knots can be made by using hemp ropes on the vertical section of the new filling pipe 8, steel bars are inserted, and personnel can help the new filling pipe 8 to overcome the lowering friction force by pressing down the steel bars. The upper pipe orifice of the lowered filling pipe 8 is clamped with a flange for connecting with the upper horizontal filling pipe.
The underground filling pipe is arranged in a drilling mode, so that the cost and the space are saved, the space for replacing the pipeline is relatively narrow, and the mechanical hoisting equipment approach work cannot be met, so that when the filling pipe 8 is replaced, the alternative hoisting replacement tool can only be small electric hoist, jack wire rope, pipeline flange, hand-held cutting machine and other objects.
The scope of the present invention includes, but is not limited to, the above embodiments, and any alterations, modifications, and improvements made by those skilled in the art are intended to fall within the scope of the invention.
Claims (8)
1. A method of replacing a filler pipe in a vertical steel casing comprising:
step (1), supporting the supporting pipe into the small chamber to serve as a supporting rod, wherein the top end of the supporting rod is fixedly connected with a antiskid plate, the antiskid plate abuts against the side wall of the small chamber, and a bolt hole is reserved at the upper part of the supporting rod and is connected with a hoisting hoist through a jack rope;
step (2), a lifting hook on the lifting hoist is lowered to the position above the pipe orifice of the filling pipe, and the lifting hook is connected with a jack rope;
step (3), selecting a flange matched with the filling pipe in the vertical steel sleeve, and fastening the flange on the upper pipe orifice of the filling pipe;
step (4), connecting a lifting rope connected with a lifting hook with lugs protruding from two ends of a flange of an upper pipe orifice of the filling pipe, and slowly lifting the filling pipe to the maximum height capable of being lifted by the lifting hoist by using the lifting hoist;
step (5), fastening a flange below the exposed part of the filling pipe lifted by the lifting hoist, cutting the filling pipe along the upper part of the flange, and separating the exposed filling pipe from the filling pipe in the vertical steel sleeve, wherein the ears protruding from the two ends of the flange of the pipe orifice of the filling pipe in the vertical steel sleeve are clamped on the vertical steel sleeve; the exposed filling pipe which is cut off is marked as a sub filling pipe;
step (6), loosening the flange of the upper pipe orifice of the sub filling pipe and the jack rope connected with the lifting hook, connecting the jack rope connected with the lifting hook with the lugs protruding from the two ends of the flange of the upper pipe orifice of the filling pipe in the vertical steel sleeve, and slowly lifting the filling pipe to the maximum height capable of being lifted by the lifting hoist by using the lifting hoist;
and (7) repeating the step (5) and the step (6) until all the filling pipes are pulled out of the vertical steel sleeve.
2. The method of replacing a filler pipe within a vertical steel sleeve of claim 1, further comprising the steps of:
step (8), the vertical steel sleeve is hollow, one end of a new filling pipe is pulled to a drilling position, and the whole filling pipe is horizontally placed along a working site;
step (9), smearing lubricating grease on the outer layer of the front part of the filling pipe, enabling the pipe orifice of the filling pipe to be downward, erecting the front end of the filling pipe, and manually keeping the rear end of the filling pipe fixed;
and (10) slowly lowering the pipe orifice of the filling pipe along the inner wall of the vertical steel sleeve by utilizing the self gravity of the filling pipe, manually forwarding the filling pipe according to the instruction, and finally loading a new filling pipe into the vertical steel sleeve.
3. The method of replacing a filler pipe in a vertical steel casing of claim 1 wherein the chamber has a length of 1.6m, a width of 1.6m and a height of 7m; the supporting tube is a 5 inch seamless steel tube with the length of 5 m.
4. The method for replacing a filling pipe in a vertical steel sleeve according to claim 3, wherein the antiskid plate is a 0.2 x 0.2m steel plate, and the top end of the supporting rod is connected with the antiskid plate in a welding mode.
5. The method for replacing filling pipes in a vertical steel bushing according to claim 4, wherein in the step (1), a bolt hole is reserved at the upper part of the supporting rod, the bolt is inserted into the bolt hole, circles at two ends of the jack rope are respectively connected to the bolt through a lock catch, and the hoisting hoist is hung on the jack rope.
6. The method of replacing a filler pipe in a vertical steel sleeve of claim 1 wherein said flange is an internally threaded flange.
7. The method of replacing a filler pipe in a vertical steel casing according to claim 2, wherein the grease is a calcareous grease.
8. The method of replacing a filler pipe in a vertical steel casing of claim 1, wherein the hoist employs an electric hoist.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210536065.2A CN114776886B (en) | 2022-05-17 | 2022-05-17 | Method for replacing filling pipe in vertical steel sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210536065.2A CN114776886B (en) | 2022-05-17 | 2022-05-17 | Method for replacing filling pipe in vertical steel sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114776886A CN114776886A (en) | 2022-07-22 |
| CN114776886B true CN114776886B (en) | 2023-10-03 |
Family
ID=82437578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210536065.2A Active CN114776886B (en) | 2022-05-17 | 2022-05-17 | Method for replacing filling pipe in vertical steel sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114776886B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2826183A1 (en) * | 1978-06-15 | 1979-12-20 | Thyssen Industrie | Pipe connection for mine dust extraction system - has hydraulically actuated sliding hinge allowing tube to slide before swinging away |
| CN208347832U (en) * | 2018-05-21 | 2019-01-08 | 金川集团股份有限公司 | A kind of extension does not couple the structure of installation filling borehole service life |
| CN111456806A (en) * | 2020-05-27 | 2020-07-28 | 湖南辰州矿业有限责任公司 | A cup joint formula underground conveyor for tailing lotion fills |
| CN212154858U (en) * | 2020-05-27 | 2020-12-15 | 湖南辰州矿业有限责任公司 | A cup joint formula underground conveyor for tailing lotion fills |
| CN112302719A (en) * | 2020-11-19 | 2021-02-02 | 中冶北方（大连）工程技术有限公司 | Method for erecting underground gallery filling pipeline |
| CN113137271A (en) * | 2021-04-14 | 2021-07-20 | 北京科技大学 | Flexible cutting anti-blocking and bottom anti-friction integrated device for mine filling vertical drilling |
-
2022
- 2022-05-17 CN CN202210536065.2A patent/CN114776886B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2826183A1 (en) * | 1978-06-15 | 1979-12-20 | Thyssen Industrie | Pipe connection for mine dust extraction system - has hydraulically actuated sliding hinge allowing tube to slide before swinging away |
| CN208347832U (en) * | 2018-05-21 | 2019-01-08 | 金川集团股份有限公司 | A kind of extension does not couple the structure of installation filling borehole service life |
| CN111456806A (en) * | 2020-05-27 | 2020-07-28 | 湖南辰州矿业有限责任公司 | A cup joint formula underground conveyor for tailing lotion fills |
| CN212154858U (en) * | 2020-05-27 | 2020-12-15 | 湖南辰州矿业有限责任公司 | A cup joint formula underground conveyor for tailing lotion fills |
| CN112302719A (en) * | 2020-11-19 | 2021-02-02 | 中冶北方（大连）工程技术有限公司 | Method for erecting underground gallery filling pipeline |
| CN113137271A (en) * | 2021-04-14 | 2021-07-20 | 北京科技大学 | Flexible cutting anti-blocking and bottom anti-friction integrated device for mine filling vertical drilling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114776886A (en) | 2022-07-22 |
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