CN115199275A - Method for treating suspended roof by using geological drilling - Google Patents
Method for treating suspended roof by using geological drilling Download PDFInfo
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- CN115199275A CN115199275A CN202210946186.4A CN202210946186A CN115199275A CN 115199275 A CN115199275 A CN 115199275A CN 202210946186 A CN202210946186 A CN 202210946186A CN 115199275 A CN115199275 A CN 115199275A
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- drilling
- suspended
- fan
- holes
- row
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- 238000005553 drilling Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000010276 construction Methods 0.000 claims abstract description 18
- 238000005422 blasting Methods 0.000 claims abstract description 17
- 239000002360 explosive Substances 0.000 claims description 7
- 239000011241 protective layer Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000000839 emulsion Substances 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 4
- 239000011435 rock Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000005065 mining Methods 0.000 abstract description 5
- 238000012790 confirmation Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000008262 pumice Substances 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/22—Methods of underground mining; Layouts therefor for ores, e.g. mining placers
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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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/16—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using gaseous fluids
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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
-
- 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
- E21B7/04—Directional drilling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Remote Sensing (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a method for treating a suspended roof by geological drilling, which comprises suspended roof positioning, confirmation of drilling construction position, drilling construction, drilling charging, blasting and ore removal, wherein a deep hole trolley cannot be used for constructing downward large-angle deep holes, the method utilizes the characteristic that the geological drilling can be carried out by drilling 360 degrees, uses the geological drilling to construct the deep holes from the side upper part of the suspended roof according to the design parameters approved by the normal mining method of an ore body, and carries out charging blasting treatment on the suspended roof.
Description
Technical Field
The invention belongs to the technical field of mining, and particularly relates to a method for treating a suspended ceiling by geological drilling.
Background
In the open stope mining method, if the blasting effect does not well produce the suspended ceiling, the stope lower part has produced the open stope, and the roof pumice can't be handled, has the risk of the sudden whereabouts of suspended ceiling moreover, and the safe construction condition of handling the suspended ceiling from the stope next step has not possessed yet, causes the ore volume loss of suspended ceiling, can't retrieve. And the open stope mining method hangs the top region, generally only has 2 free faces, 4 connection faces, and the method of blasting vibrations hardly has obvious effect, and the processing degree of difficulty is great.
Disclosure of Invention
It is an object of the present invention to provide a method of treating a suspended roof using geological drilling to solve the above problems.
In order to achieve the purpose, the invention adopts the technical scheme that:
a method of treating a suspended roof using geological drilling, comprising the steps of:
(1) Suspended ceiling positioning:
scanning and measuring the suspended ceiling by using a three-dimensional scanner, and accurately positioning a suspended ceiling area and the shape of the suspended ceiling;
(2) Confirming the drilling construction position:
selecting adjacent stope rock drilling roadways of the suspended ceiling area, observing whether a fault joint exists nearby and the sliding risk exists, wherein the distance between a construction position and the suspended ceiling area is more than or equal to 5m;
(3) Drilling construction:
arranging fan-shaped suspended top processing holes above the side of the suspended top area according to the shape of the suspended top, and constructing by using a geological drilling machine, wherein the fan-shaped suspended top processing holes comprise a single row of fan-shaped holes and a plurality of rows of fan-shaped holes, the opening interval of each row of drilling holes is 0.1-1.0 m, when the distance of Kong Jiankai is less than 0.1m, the adjacent drilling holes constructed in advance are damaged, so the recommended drilling hole opening interval is more than 0.1m, the moving workload of the drilling machine is not reduced, and the interval is not too large, in sum, the drilling hole opening interval is preferably in the range of 0.1-1 m, the reserved thickness of a hole bottom protective layer is 0.5-1.6 m, mainly aiming at reducing the perforation phenomenon during drilling construction, so that the blasting effect is not good, the reserved thickness of the hole bottom can be adjusted according to the lithology condition, the free surface condition, the measurement precision and the drilling machine construction precision, but is not more than the hole bottom interval and the row distance between 0.5m and the row distance, preferably between 0.6 m and the row bottom of the single row of the fan-1.6 m, and the row of the multiple rows of the holes are 2.2.2.6 m; because the shapes of the suspended ceiling ore blocks are different, the drilling opening positions are different, the drilling construction angle is changed, and the technical scheme can be realized as long as the hole bottom spacing, the hole bottom row spacing and the thickness of the hole bottom protective layer are ensured to meet the requirements;
(4) Drilling and charging:
cleaning accumulated water, filling an emulsion explosive, and filling stemming at an orifice; because the opening of the drill hole is upward, a small amount of residual water can be left in the hole, and the accumulated water in the hole must be blown clean by using an air pipe, so that the failure of the expanded explosive caused by the water stored in the hole is prevented; the emulsion explosive is fully filled;
(5) Blasting:
detonating the bottom of the hole, wherein the single row of fan-shaped holes are detonated from the middle to two sides at one time, the multiple rows of fan-shaped holes are detonated from the lower part to the upper part in sequence, and a digital detonator is adopted for half-second differential blasting; the differential blasting avoids the clamping operation;
(6) Ore removal:
and (4) ore removal is carried out at the bottom of the chamber after the blasting is finished, and the ore recovery amount in the suspended ceiling area is counted.
In order to further realize the invention, the opening distance of each row of the drill holes in the step (3) is 0.3m.
In order to further realize the invention, the length of the stemming for filling the hole opening in the step (4) is 0.5m-1.0m.
Compared with the prior art, the invention has the beneficial effects that:
because the deep hole trolley can not construct downward large-angle deep holes, the invention utilizes the characteristic that the geological drill can be constructed by drilling holes at 360 degrees, and the geological drill is used for constructing the deep holes from the side upper part of the suspended roof according to the design parameters approved by the normal mining method of the ore body, so as to carry out explosive loading blasting treatment on the suspended roof.
The invention breaks through the traditional thinking of treating the suspended roof from the lower part, utilizes the angle selectivity of the geological drill and the blasting treatment mode of filling the explosive in the geological drill from the side upper part of the suspended roof chamber to treat the suspended roof, recovers the suspended roof ore, and has the recovery rate of 90 percent and excellent effect.
Drawings
FIG. 1 is a cross sectional view of a drilling site of the present invention;
FIG. 2 is a schematic longitudinal sectional view of a drilling site according to the present invention;
FIG. 3 is a schematic construction plan view of a single row of fan-shaped holes;
FIG. 4 is a schematic construction cross-sectional view of a plurality of rows of fan-shaped holes;
the reference numerals have the following meanings: 1. a suspended ceiling region; 2. drilling a rock roadway in a stope; 3. a single row of fan-shaped holes; 4. multiple rows of fan-shaped holes; 5. a hole bottom protective layer; 6. suspended ceiling lump boundaries.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
1-4, a method of treating a suspended roof using geological drilling, comprising the steps of:
(1) Suspended ceiling positioning:
scanning and measuring the suspended ceiling by using a three-dimensional scanner, and accurately positioning the suspended ceiling region 1 and the suspended ceiling shape;
(2) Confirming the drilling construction position:
selecting rock drilling roadways 2 of adjacent stopes of the cantilever top area 1, observing whether fault joints exist nearby and the sliding risk exists, wherein the distance (A) between a construction position and the cantilever top area 1 is more than or equal to 5m;
(3) Drilling construction:
arranging fan-shaped suspended ceiling treatment holes above the side of the suspended ceiling region 1 according to the shape of the suspended ceiling, and constructing by using a geological drilling machine, wherein the fan-shaped suspended ceiling treatment holes comprise single-row fan-shaped holes 3 and multiple rows of fan-shaped holes 4, the opening distance (B) of each row of drilled holes is 0.1-1.0 m, the reserved thickness (C) of the hole bottom protective layer 5 is 0.5-1.6 m, the hole bottom distance (D) of the single-row fan-shaped holes 3 is 2.0-2.2 m, and the hole bottom row distance (E) of the multiple rows of fan-shaped holes 4 is 1.6-1.8m; because the shapes of the suspended ceiling ore blocks are different, the drilling opening positions are different, the drilling construction angle is changed, and the technical scheme can be realized as long as the hole bottom spacing, the hole bottom row spacing and the thickness of the hole bottom protective layer are ensured to meet the requirements;
(4) Drilling and charging:
cleaning accumulated water, filling emulsion explosive, filling stemming at an orifice, wherein the length of the stemming is 0.5-1.0 m;
(5) Blasting:
the hole bottom is detonated, the single row of the fan-shaped holes 3 are detonated from the middle to two sides at one time, the multiple rows of the fan-shaped holes 4 are detonated from the lower part to the upper part in sequence, and digital detonators are adopted for half-second differential blasting;
(6) Ore removal:
and (4) ore removal is carried out at the bottom of the chamber after blasting is finished, and the ore recovery amount of the suspended ceiling area is counted.
This patent practical effect contrast:
Claims (3)
1. a method of treating a suspended roof using geological drilling, comprising the steps of:
(1) Positioning the suspended roof:
scanning and measuring the suspended ceiling by using a three-dimensional scanner, and accurately positioning a suspended ceiling area and the shape of the suspended ceiling;
(2) Confirming the drilling construction position:
selecting adjacent stope rock drilling roadways of the suspended ceiling area, observing whether a fault joint exists nearby and has a slippage risk, wherein the distance between a construction position and the suspended ceiling area is more than or equal to 5m;
(3) Drilling construction:
arranging fan-shaped suspended top treatment holes above the side of the suspended top area according to the shape of the suspended top, and constructing by using a geological drilling machine, wherein the fan-shaped suspended top treatment holes comprise single-row fan-shaped holes and multiple rows of fan-shaped holes, the opening interval of each row of drilled holes is 0.1-1.0 m, the reserved thickness of a hole bottom protective layer is 0.5-1.6 m, the hole bottom interval of the single-row fan-shaped holes is 2.0-2.2 m, and the hole bottom row interval of the multiple rows of fan-shaped holes is 1.6-1.8m;
(4) Drilling and charging:
cleaning accumulated water, filling an emulsion explosive, and filling stemming at an orifice;
(5) Blasting:
detonating the bottom of the hole, wherein the single row of fan-shaped holes are detonated from the middle to two sides at one time, the multiple rows of fan-shaped holes are detonated from the lower part to the upper part in sequence, and a digital detonator is adopted for half-second differential blasting;
(6) Ore removal:
and (4) ore removal is carried out at the bottom of the chamber after the blasting is finished, and the ore recovery amount in the suspended ceiling area is counted.
2. The method of treating a suspended roof using geologic drilling as defined in claim 1, wherein: and (4) in the step (3), the opening distance of each row of drill holes is 0.3m.
3. The method of treating a suspended roof using geologic drilling as defined in claim 1, wherein: and (4) the length of the stemming filled in the orifice in the step (4) is 0.5m-1.0m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210946186.4A CN115199275A (en) | 2022-08-09 | 2022-08-09 | Method for treating suspended roof by using geological drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210946186.4A CN115199275A (en) | 2022-08-09 | 2022-08-09 | Method for treating suspended roof by using geological drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115199275A true CN115199275A (en) | 2022-10-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210946186.4A Pending CN115199275A (en) | 2022-08-09 | 2022-08-09 | Method for treating suspended roof by using geological drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115199275A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5634691A (en) * | 1994-07-13 | 1997-06-03 | Sungkyong Engineering & Construction Limited | Method for excavating a working face by blasting |
| JPH11350899A (en) * | 1998-06-10 | 1999-12-21 | Shimizu Corp | Digging method for underground cavity having large cross section and rough stone digging place employing the method |
| CN104847350A (en) * | 2015-05-15 | 2015-08-19 | 西北矿冶研究院 | Method for treating suspended roof by medium-length hole blasting |
| CN109029168A (en) * | 2018-08-20 | 2018-12-18 | 河北钢铁集团矿业有限公司 | A kind of blast processing method on the outstanding top in underground |
| CN109974545A (en) * | 2019-04-04 | 2019-07-05 | 中南大学 | A kind of medium-length hole blasting outstanding top processing method in sublevel caving method |
| CN211977724U (en) * | 2020-04-21 | 2020-11-20 | 张�杰 | Fan-shaped stoping medium-length hole for treating suspended top of cutting groove |
| CN113605895A (en) * | 2021-09-15 | 2021-11-05 | 长沙矿山研究院有限责任公司 | Safe and efficient mining method for sectional medium-length hole stope |
| CN114812314A (en) * | 2022-06-15 | 2022-07-29 | 甘肃镜铁山矿业有限公司 | Broaching and blasting hole distribution method for medium-length hole auxiliary cutting well |
-
2022
- 2022-08-09 CN CN202210946186.4A patent/CN115199275A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5634691A (en) * | 1994-07-13 | 1997-06-03 | Sungkyong Engineering & Construction Limited | Method for excavating a working face by blasting |
| JPH11350899A (en) * | 1998-06-10 | 1999-12-21 | Shimizu Corp | Digging method for underground cavity having large cross section and rough stone digging place employing the method |
| CN104847350A (en) * | 2015-05-15 | 2015-08-19 | 西北矿冶研究院 | Method for treating suspended roof by medium-length hole blasting |
| CN109029168A (en) * | 2018-08-20 | 2018-12-18 | 河北钢铁集团矿业有限公司 | A kind of blast processing method on the outstanding top in underground |
| CN109974545A (en) * | 2019-04-04 | 2019-07-05 | 中南大学 | A kind of medium-length hole blasting outstanding top processing method in sublevel caving method |
| CN211977724U (en) * | 2020-04-21 | 2020-11-20 | 张�杰 | Fan-shaped stoping medium-length hole for treating suspended top of cutting groove |
| CN113605895A (en) * | 2021-09-15 | 2021-11-05 | 长沙矿山研究院有限责任公司 | Safe and efficient mining method for sectional medium-length hole stope |
| CN114812314A (en) * | 2022-06-15 | 2022-07-29 | 甘肃镜铁山矿业有限公司 | Broaching and blasting hole distribution method for medium-length hole auxiliary cutting well |
Non-Patent Citations (1)
| Title |
|---|
| 高志斌;潘健;秦超;: "无底柱分段崩落采矿法悬顶产生原因及预防处理措施", 黄金, vol. 38, no. 09, 15 September 2017 (2017-09-15), pages 35 - 39 * |
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