CN112443274A - Construction method of coal bunker cable hole - Google Patents
Construction method of coal bunker cable hole Download PDFInfo
- Publication number
- CN112443274A CN112443274A CN201910850045.0A CN201910850045A CN112443274A CN 112443274 A CN112443274 A CN 112443274A CN 201910850045 A CN201910850045 A CN 201910850045A CN 112443274 A CN112443274 A CN 112443274A
- Authority
- CN
- China
- Prior art keywords
- hole
- coal bunker
- cable hole
- drill
- diameter
- 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
- 238000010276 construction Methods 0.000 title claims abstract description 26
- 239000003245 coal Substances 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 239000002699 waste material Substances 0.000 claims abstract description 4
- 239000004568 cement Substances 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 6
- 238000003754 machining Methods 0.000 abstract 1
- 239000011435 rock Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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 OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a construction method of a coal bunker cable hole, which comprises the first step of vertically constructing a drill hole with the diameter of 28-32mm from bottom to top at the designed position of a coal bunker lower opening cable hole by using an anchor rod machine as a guide hole; secondly, pulling out the drill rod after the drill hole penetrates to the upper opening of the waste bin, and installing a hole expanding drill bit with the diameter of 73mm for expanding the hole; and thirdly, pre-burying a steel pipe with the diameter of 50mm in the hole after reaming is finished, and performing pipe fixing operation, wherein the construction of the cable hole is finished after the pipe is fixed. The cable hole machining method is simple to operate, the complex process of using a raise boring machine to open holes underground is omitted, the construction efficiency is improved, and the construction cost is effectively reduced.
Description
Technical Field
The invention relates to the technical field of underground coal mine construction, in particular to a construction method of a coal bunker cable hole.
Background
The conventional construction method needs to use a raise boring machine, so that the operation is inconvenient and the construction cost is high.
Disclosure of Invention
The invention aims to provide a construction method of a coal bunker cable hole suitable for underground, and the construction cost can be effectively reduced by adopting the method to construct the cable hole.
The technical scheme adopted by the invention is as follows:
a construction method of a coal bunker cable hole comprises the following steps:
firstly, vertically constructing a drill hole with the diameter of 28-32mm from bottom to top at the designed position of a cable hole at the lower opening of a coal bunker by using an anchor rod machine as a guide hole;
secondly, pulling out the drill rod after the drill hole penetrates to the upper opening of the waste bin, and installing a hole expanding drill bit with the diameter of 73mm for expanding the hole;
and thirdly, pre-burying a steel pipe with the diameter of 50mm in the hole after reaming is finished, and performing pipe fixing operation, wherein the construction of the cable hole is finished after the pipe is fixed.
Further, the operation of pipe fixing is to use a block to block the bottom of the hole enlargement, and cement slurry is poured into a gap between the steel pipe and the hole enlargement.
Further, the wall thickness of the steel pipe is 2 mm.
The invention has the following beneficial effects: the construction method of the cable hole is simple to operate, the complex process of using a raise boring machine to construct and drill the hole underground is omitted, the construction efficiency is improved, and the construction cost is effectively reduced.
Drawings
FIG. 1 is a schematic view of the present invention during punching;
FIG. 2 is a schematic structural view of the steel pipe of the present invention after installation;
in the figure: 1-coal bunker, 2-roadway, 3-guide hole, 4-reaming, 5-cable hole, 6-rock mass, 7-steel pipe and 8-cement slurry.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
The invention relates to a construction method of a coal bunker cable hole, which is applied to the construction of the cable hole under a coal mine or in a similar scene, and comprises the following steps:
firstly, as shown in figure 1, a rock mass 6 between an upper roadway 2 and a lower roadway 2 of a coal bunker 1 is vertically drilled with a bolting machine from bottom to top to form a drill hole with the diameter of 28-32mm as a guide hole 3;
secondly, pulling out a drill rod after the guide hole 3 penetrates into the upper opening roadway 2 of the waste bin, and installing a hole expanding drill bit with the diameter of 73mm for expanding holes 4;
thirdly, as shown in fig. 2, after the hole expansion is finished, a steel pipe 7 with the diameter of 50mm and the wall thickness of 2mm is pre-buried in the hole, the bottom of the hole expansion is blocked by a blocking block, cement slurry 8 is poured into a gap between the steel pipe 7 and the hole expansion 4 to carry out the pipe fixing operation, and after the pipe is fixed, the construction of the cable hole 5 is finished.
The method is simple to operate, the complex process of using the raise boring machine to construct and drill holes underground is omitted, the construction efficiency is improved, and the construction cost is effectively reduced.
Claims (3)
1. A construction method of a coal bunker cable hole is characterized by comprising the following steps:
firstly, vertically constructing a drill hole with the diameter of 28-32mm from bottom to top at the designed position of a cable hole at the lower opening of a coal bunker by using an anchor rod machine as a guide hole;
secondly, pulling out the drill rod after the drill hole penetrates to the upper opening of the waste bin, and installing a hole expanding drill bit with the diameter of 73mm for expanding the hole;
and thirdly, pre-burying a steel pipe with the diameter of 50mm in the hole after reaming is finished, and performing pipe fixing operation, wherein the construction of the cable hole is finished after the pipe is fixed.
2. The construction method of the coal bunker cable hole according to claim 1, characterized in that: and the pipe fixing operation is to plug the bottom of the reaming hole by adopting a plug block and pour cement slurry into a gap between the steel pipe and the reaming hole.
3. The construction method of the coal bunker cable hole according to claim 1, characterized in that: the wall thickness of the steel pipe is 2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910850045.0A CN112443274A (en) | 2019-08-27 | 2019-08-27 | Construction method of coal bunker cable hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910850045.0A CN112443274A (en) | 2019-08-27 | 2019-08-27 | Construction method of coal bunker cable hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112443274A true CN112443274A (en) | 2021-03-05 |
Family
ID=74733537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910850045.0A Pending CN112443274A (en) | 2019-08-27 | 2019-08-27 | Construction method of coal bunker cable hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112443274A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0202013A2 (en) * | 1985-04-05 | 1986-11-20 | Gas Research Institute | Steering and control system for percussion boring tools |
| CN105673934A (en) * | 2015-12-24 | 2016-06-15 | 上海神洁环保科技股份有限公司 | Non-excavation cable laying and pipe arranging method |
| CN109989710A (en) * | 2017-12-30 | 2019-07-09 | 中国人民解放军63653部队 | High-precision heavy-caliber horizontal resistance force method |
-
2019
- 2019-08-27 CN CN201910850045.0A patent/CN112443274A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0202013A2 (en) * | 1985-04-05 | 1986-11-20 | Gas Research Institute | Steering and control system for percussion boring tools |
| CN105673934A (en) * | 2015-12-24 | 2016-06-15 | 上海神洁环保科技股份有限公司 | Non-excavation cable laying and pipe arranging method |
| CN109989710A (en) * | 2017-12-30 | 2019-07-09 | 中国人民解放军63653部队 | High-precision heavy-caliber horizontal resistance force method |
Non-Patent Citations (2)
| Title |
|---|
| 李瑞群: "神东矿区井下各类常用钻孔的特点分析和施工工艺研究", 《煤炭工程》 * |
| 郭端英: "引黄入晋工程地下泵站电缆井施工设计", 《水利水电工程设计》 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210305 |
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| WD01 | Invention patent application deemed withdrawn after publication |