CN106403740A - Method for accurately controlling direction of obliquely downward smooth blasting hole in excavating of structural surface - Google Patents
Method for accurately controlling direction of obliquely downward smooth blasting hole in excavating of structural surface Download PDFInfo
- Publication number
- CN106403740A CN106403740A CN201611051482.9A CN201611051482A CN106403740A CN 106403740 A CN106403740 A CN 106403740A CN 201611051482 A CN201611051482 A CN 201611051482A CN 106403740 A CN106403740 A CN 106403740A
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- China
- Prior art keywords
- straight line
- point
- actual
- blasthole
- design
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Classifications
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Earth Drilling (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
A method for accurately controlling direction of an obliquely downward smooth blasting hole in excavating of a structural surface is characterized by comprises the following specific steps: 1, determining the distance from an actual blasting hole opening point C to a design blasting hole; 2, drawing a straight line CE to be vertical to a design smooth surface opening line AB; and 3, hanging a vertical ball F at a point D on the straight line CE, wherein the plane where a point CDF is positioned is the plane where the actual blasting hole opening point C is positioned. The method is simple and easy to operate; the straight line CE is drawn from the actual blasting hole opening point C through an instrument, then the vertical ball is hung or erected on the straight line CE, and an operator can visually observe to ensure that a drilling rod is on the same plane with the straight line of the vertical ball, thus the blasting hole direction can be accurately controlled, and as a result, the construction can be accelerated while the construction quality is ensured, and both manpower and materials can be saved.
Description
Technical field
The present invention relates to blasting technique field is and in particular to a kind of precise control structural plane excavates photoface exploision diagonally downward
The method in hole direction.
Background technology
Photoface exploision is a kind of Controlled blasting technique of reasonable utilization explosive energy.When carrying out cubic meter of stone structural plane excavation,
Last Zhu Bao area explosion simultaneously, by intensive boring, is lacked powder charge, is obtained more smooth outline excavation along design profile line,
After work surface explosion, substantially conforming to the profile requirements of design section, periphery crag is smooth, become for the shape and size of drift section
Type is regular, rock keeps stable, do not produce or seldom produce big gun shatters gap.Photoface exploision not only excavates wall in vertical, inclination
On be used widely；It is also adopted by photoface exploision to control excavation wheel in regular curved surface, warp surface and horizontal foundation plane etc.
Wide.
Control outline excavation the deep hole blasting of photoface exploision diagonally downward in it is ensured that blasting quality can be summarized as three will
Element：Photoface exploision hole drill hole precision, blasting parameter, blasting circuit, wherein blasting parameter include photoface exploision hole, bench hole and delay
Punching parameter.For photoface exploision, wherein quality about 70% depends on borehole accuracy, mainly boring direction.Many works
Cheng Zhong, photoface exploision why poor quality, it is excessive and retain basement rock and destroyed to cause to retain scar out-of-flatness, out break,
Caused by its main cause does not often control bright finish boring direction very well.Therefore, take effective measures guarantee diagonally downward
Photoface exploision hole drilling directional precision, has great importance.
In design of smooth blasting, each diagonally downward photoface exploision axially bored line be a space directed line line segment, its
Geometric element is made up of orifice position, the deflection in hole, the inclination angle in hole and hole depth.The deflection drilling axiss of its mesopore any
Projection in level for some tangent lines, the angle turning clockwise with meridian north pointer direction, referred to as hole this point or this hole depth
The bore direction angle at place.Boring does not have drift angle under plumbness, does not just have azimuth yet.Only after boring deviation vertical line
Create drift angle, boring also will present azimuth.
The requirement of photoface exploision hole drill hole precision, mainly according to good to the requirement retaining bedrock surface out break and acquisition
Bright finish wall determine., all less than 1 degree, rise of flight is based on 10m for many engine request boring direction angles and inclination deviation
Calculate, hole depth deviation is less than 15cm.In the geometric parameter in above-mentioned photoface exploision hole, the most rambunctious is boring direction angle.
Content of the invention
The present invention is directed to the deficiencies in the prior art, proposes a kind of easy to operate, realizes easily, boring direction angular accuracy is high
The method that precise control structural plane excavates photoface exploision hole direction diagonally downward, concrete technical scheme is as follows：
Step one：Determine actual blasthole opening point C with a distance from design blasthole；
Step 2：Make straight line CE perpendicular to design bright finish aperture lines AB；
Step 3：D point on described straight line CE hangs plumb bob F, and point CDF point place plane is actual blasthole opening point C institute
In plane.
To better implement the present invention, may further be：
In described step 1, calculating with a distance from design blasthole for the actual blasthole opening point CMethod is,
In formula, △ S is the distance of actual blasthole opening point C off-design bright finish aperture lines, and △ H is actual blasthole elevation ratio
The higher distance of design altitude, θ is photoface exploision hole inclination angle.
On described straight line CE, the distance at least 6m of CD.
Described vertical line DF deviates straight line CE and is less than 3cm.
Beneficial effects of the present invention are：Operation is simple, only need to adopt instrument from actual blasthole opening point C point,
Draw straight line CE, then on this straight line CE hang or set up plumb bob, then operator can be observed by the way of visual so as to
Drilling rod and plumb bob place straight line in a plane, just can accurately controlled blasting hole direction, while ensureing construction quality, can
Accelerate the duration, use manpower and material resources sparingly.
Brief description
Fig. 1 calculates schematic diagram for the present invention；
Fig. 2 is the application scenario diagram of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings presently preferred embodiments of the present invention is described in detail, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, thus protection scope of the present invention is made apparent clearly defining.
As depicted in figs. 1 and 2：A kind of method that precise control structural plane excavates photoface exploision hole direction diagonally downward, tool
Body step is,
Step one：Determine actual blasthole opening point C from designing with a distance from blasthole, computing formula is,
In formula, △ S is the distance of actual blasthole opening point C off-design bright finish aperture lines, and △ H is actual blasthole elevation ratio
The higher distance of design altitude, θ is photoface exploision hole inclination angle.
Step 2：After determining actual blasthole opening point C, make straight line CE perpendicular to design bright finish aperture lines AB；
Step 3：D point on described straight line CE hangs plumb bob F, and point C, D, F place plane is actual blasthole opening point C institute
In plane, after the visual plumb bob messenger wire of E point is overlapped with actual blasthole mouth point, borer drill rod is adjusted to by messenger wire commander observer
In the plane determining with point C.While adjusting drilling rod direction, also should take into account orifice position and drilling rod inclination angle, make this 3 parameters
Reach required precision, drilling rod inclination angle is measured with geologic compass and controls simultaneously.Wherein the distance of CD is 6m, visually controls drilling rod
It is desirable to messenger wire and the deviation of the drill rod axis depth of parallelism during direction, reach in the range of piece run of steel 3.6m of CM351 rig not
Exceed drill pipe diameter 45mm, i.e. direction angular displacement is less than △ θ1=0.045/3.6=0.716., when hanging vertical line it is desirable to point D
Deviate CE and be less than 3cm.The direction angular displacement △ θ causing therefrom2=0.03/6=0.286 °.Under extreme case, deflection
Total error △ θ=△ θ1+△θ2=1.0 °, the required precision that direction angular displacement is less than 1 ° can be met.If increasing CD length,
Can further improve the precision at boring direction angle.
Claims (4)
1. a kind of precise control structural plane excavates the method in photoface exploision hole direction diagonally downward it is characterised in that concrete steps
For：
Step one：Determine actual blasthole opening point C with a distance from design blasthole；
Step 2：Make straight line CE perpendicular to design bright finish aperture lines AB；
Step 3：D point on described straight line CE hangs plumb bob F, and point CDF point place plane is that actual blasthole opening point C place is flat
Face.
2. the method that precise control structural plane excavates photoface exploision hole direction diagonally downward according to claim 1, its feature
It is：In described step 1, actual blasthole opening point C from design blasthole with a distance from computational methods be,
In formula, △ S is the distance of actual blasthole opening point C off-design bright finish aperture lines, and △ H is actual blasthole
The elevation distance more higher than design altitude, θ is photoface exploision hole inclination angle.
3. the method that precise control structural plane excavates photoface exploision hole direction diagonally downward according to claim 1, its feature
It is：On described straight line CE, the distance at least 6m of CD.
4. the method that precise control structural plane excavates photoface exploision hole direction diagonally downward according to claim 1, its feature
It is：Described vertical line DF deviates straight line CE and is less than 3cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611051482.9A CN106403740B (en) | 2016-11-25 | 2016-11-25 | Accurately control the method that structural plane excavates photoface exploision hole direction diagonally downward |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611051482.9A CN106403740B (en) | 2016-11-25 | 2016-11-25 | Accurately control the method that structural plane excavates photoface exploision hole direction diagonally downward |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106403740A true CN106403740A (en) | 2017-02-15 |
| CN106403740B CN106403740B (en) | 2018-08-31 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611051482.9A Active CN106403740B (en) | 2016-11-25 | 2016-11-25 | Accurately control the method that structural plane excavates photoface exploision hole direction diagonally downward |
Country Status (1)
| Country | Link |
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| CN (1) | CN106403740B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113503833A (en) * | 2021-06-06 | 2021-10-15 | 成远矿业开发股份有限公司 | Blast hole angle measuring method and system based on light spot projection |
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| CN103410519A (en) * | 2013-08-06 | 2013-11-27 | 重庆地质矿产研究院 | Rock burst-proof tunnel face structure for tunneling and rock burst-proof tunneling method |
| CN104806249A (en) * | 2015-04-03 | 2015-07-29 | 核工业井巷建设公司 | Guiding and tunneling construction method of short silo |
| CN104949591A (en) * | 2015-07-21 | 2015-09-30 | 武汉大学 | Construction control method for reducing bench blasting toe output rate |
| CN105953670A (en) * | 2016-04-27 | 2016-09-21 | 杨毅 | Rectangular tunnel full-section blasting excavation construction method |
| CN106193046A (en) * | 2016-07-06 | 2016-12-07 | 中国电建集团华东勘测设计研究院有限公司 | What weak counter-tilt slope discharged surrouding rock deformation in advance allows pressure construction method |
-
2016
- 2016-11-25 CN CN201611051482.9A patent/CN106403740B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410519A (en) * | 2013-08-06 | 2013-11-27 | 重庆地质矿产研究院 | Rock burst-proof tunnel face structure for tunneling and rock burst-proof tunneling method |
| CN104806249A (en) * | 2015-04-03 | 2015-07-29 | 核工业井巷建设公司 | Guiding and tunneling construction method of short silo |
| CN104949591A (en) * | 2015-07-21 | 2015-09-30 | 武汉大学 | Construction control method for reducing bench blasting toe output rate |
| CN105953670A (en) * | 2016-04-27 | 2016-09-21 | 杨毅 | Rectangular tunnel full-section blasting excavation construction method |
| CN106193046A (en) * | 2016-07-06 | 2016-12-07 | 中国电建集团华东勘测设计研究院有限公司 | What weak counter-tilt slope discharged surrouding rock deformation in advance allows pressure construction method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113503833A (en) * | 2021-06-06 | 2021-10-15 | 成远矿业开发股份有限公司 | Blast hole angle measuring method and system based on light spot projection |
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| Publication number | Publication date |
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| CN106403740B (en) | 2018-08-31 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20170829 Address after: 401122 Chongqing City, the new Northern District of starlight Road No. five, No. 2 Applicant after: CHINA GEZHOUBA GROUP EXPLOSIVE CO., LTD. Address before: 610000 Sichuan province Chengdu Wuhou District Road 19, 3 floor of building 31 3101-3120 Applicant before: Yi Puli Sichuan, Ge Zhou Ba Explo Engineering GmbH |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190617 Address after: 610000 3101-3120, 31st Building, No. 19 Changhua Road, Wuhou District, Chengdu City, Sichuan Province Patentee after: Yi Puli Sichuan, Ge Zhou Ba Explo Engineering GmbH Address before: 401122 No. 2 Xingguang Five Road, North New District of Chongqing Patentee before: CHINA GEZHOUBA GROUP EXPLOSIVE CO., LTD. |
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| TR01 | Transfer of patent right |