CN114001606A - Method for expanding and distributing holes of circular shaft - Google Patents
Method for expanding and distributing holes of circular shaft Download PDFInfo
- Publication number
- CN114001606A CN114001606A CN202111252155.0A CN202111252155A CN114001606A CN 114001606 A CN114001606 A CN 114001606A CN 202111252155 A CN202111252155 A CN 202111252155A CN 114001606 A CN114001606 A CN 114001606A
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- China
- Prior art keywords
- shaft
- hole
- well
- expanding
- holes
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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
- 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
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Abstract
The invention relates to the technical field of shaft expanding, in particular to a circular shaft expanding and hole distributing method, which adopts the technical scheme that: the method comprises the following specific steps: s1: firstly, a hole 1 for expanding a well, a hole 2 for expanding a well and a hole 3 for expanding a well are sequentially formed on the periphery of a shaft needing to be expanded by drilling equipment, wherein the hole 1 for expanding the well is positioned on the left side part of the shaft, the hole 2 for expanding the well is positioned on the right side part of the shaft, the hole 3 for expanding the well is positioned at the front end part of the right side end of the shaft, and S2: and then, drilling equipment is utilized to form an auxiliary No. 4 hole and an auxiliary No. 5 hole around the shaft, the auxiliary No. 4 hole is formed in the rear end part of the right side end of the shaft, and the auxiliary No. 5 hole is formed in the rear end part of the left side end of the shaft.
Description
Technical Field
The invention relates to the technical field of shaft expansion, in particular to a circular shaft expansion hole distribution method.
Background
Because the round shaft has no angle, the acting force generated by blasting can be uniformly dispersed on the inner wall of the shaft, so that the bearing capacity of the round shaft is greatly increased compared with that of a square shaft. The well bores adopting the mechanical well forming method are all round, the stress and the strain of the structure are axisymmetric, and if the structure has no rigid translational displacement, the displacement is also axisymmetric stress; the shaft such as cutting raise and the like takes the round raise as a free surface, the blasting difficulty is increased, and the blasting damage bearing capacity is enhanced.
Therefore, the invention of the method for expanding and distributing the holes in the circular shaft is necessary.
Disclosure of Invention
Therefore, the invention provides a method for expanding and distributing holes of a circular shaft, which aims to solve the problems that shafts which adopt mechanical well forming are circular, the stress and the strain of the structure are axisymmetric, if the structure has no rigid translational displacement, the displacement is also axisymmetric stress, shafts such as cutting patios and the like use the circular patios as free surfaces, the blasting difficulty is increased, and the blasting failure bearing capacity is enhanced.
In order to achieve the above purpose, the invention provides the following technical scheme: the method for expanding and distributing the holes of the round shaft comprises the following specific steps:
s1: firstly, sequentially forming a hole 1 for expanding a well, a hole 2 for expanding a well and a hole 3 for expanding a well on the periphery of a shaft needing well expansion by using drilling equipment, wherein the hole 1 for expanding the well is positioned on the left side part of the shaft, the hole 2 for expanding the well is positioned on the right side part of the shaft, and the hole 3 for expanding the well is positioned at the front end part of the right side end of the shaft;
s2: then, drilling equipment is utilized to form auxiliary No. 4 holes and auxiliary No. 5 holes around the shaft, the auxiliary No. 4 holes are formed in the rear end part of the right side end of the shaft, and the auxiliary No. 5 holes are formed in the rear end part of the left side end of the shaft;
s3: respectively filling blasting detonators for blasting into the No. 1-3 enlarged boreholes by using an explosive filling device;
s4: then, controlling the detonator to explode through the detonating device, wherein the explosion can enable blasting micro-fractures of rock walls on two sides of the inner diameter of the shaft to be generated in an approximately symmetrical state, and after the micro-fractures are connected and communicated, parent bodies of the shaft wall can be separated, and approximately symmetrical V-shaped damage inner domains are formed;
s5: when the shaft is symmetrically microcracked to damage a V-shaped area of a well wall and the microcracks are broken and extend outwards and inwards, and the microcracks are formed by tensioning type cracks, detonating detonators can be respectively filled into No. 4-5 auxiliary holes through an explosive filling device, and then the detonating detonators are detonated by the detonating device, so that the damage degree of the rock wall of the well wall is increased, and the strength of the rock wall for resisting stress and strain is reduced;
s6: then, drilling equipment is utilized to form a peripheral No. 6 hole, a peripheral No. 7 hole, a peripheral No. 8 hole and a peripheral No. 9 hole on the periphery of the shaft, the formed peripheral No. 6-9 holes are respectively arranged at four diagonal positions of the shaft, then an explosive filling device is utilized to respectively fill blasting detonators for blasting into the peripheral No. 6-9 holes, then the blasting detonators are controlled to explode through the blasting device, and further a square shaft outline is formed;
s7: cleaning the periphery of the expanded shaft by using cleaning equipment, and detecting the expanded shaft by using a detection device.
As a preferable aspect of the method for charging blasting upward hole mixed explosive and primary explosive according to the present invention, the method comprises: in the step S1, the types of drilling equipment are specifically KD70 and SKD100 down-the-hole drill or 100 geological drill, and drilling is performed from top to bottom.
As a preferable aspect of the method for charging blasting upward hole mixed explosive and primary explosive according to the present invention, the method comprises: in the step S1, the distance between the opened hole for enlarging the well 1 and the shaft is 0.3m, the distance between the opened hole for enlarging the well 2 and the shaft is 0.3m, and the distance between the opened hole for enlarging the well two and the shaft is 0.4 m.
As a preferable aspect of the method for charging blasting upward hole mixed explosive and primary explosive according to the present invention, the method comprises: in the step S2, the distance between the opened auxiliary No. 4 hole and the shaft is 0.7m, and the distance between the opened auxiliary No. 5 hole and the shaft is 0.8 m.
As a preferable aspect of the method for charging blasting upward hole mixed explosive and primary explosive according to the present invention, the method comprises: in the step S5, the distance between the number 6-9 peripheral holes is 4 m.
As a preferable aspect of the method for charging blasting upward hole mixed explosive and primary explosive according to the present invention, the method comprises: in the step S2, the type of the arranged priming cap is 70 #.
The invention has the beneficial effects that:
according to the invention, the shaft can be expanded by blasting through the opened hole expanding holes, the damage degree of the hole expanding holes to the rock wall of the shaft can be enhanced through the opened auxiliary holes, the resistance stress and the strain strength of the rock wall are reduced at the same time, and finally the round shaft can form a square shaft outline through the opened peripheral holes.
Drawings
Fig. 1 is a schematic view of a hole distribution structure in a top view direction provided by the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation. Referring to the attached figure 1, the circular shaft hole expanding and distributing method provided by the invention comprises the following specific steps:
s1: firstly, sequentially forming a hole 1 for expanding a well, a hole 2 for expanding a well and a hole 3 for expanding a well on the periphery of a shaft needing to be expanded by utilizing drilling equipment, wherein the hole 1 for expanding the well is positioned on the left side part of the shaft, the hole 2 for expanding the well is positioned on the right side part of the shaft, and the hole 3 for expanding the well is positioned at the front end part of the right side end of the shaft;
s2: then, drilling equipment is utilized to form an auxiliary No. 4 hole and an auxiliary No. 5 hole around the shaft, the auxiliary No. 4 hole is formed in the rear end part of the right side end of the shaft, the auxiliary No. 5 hole is formed in the rear end part of the left side end of the shaft, specifically, the distance between the formed auxiliary No. 4 hole and the shaft is 0.7m, and the distance between the formed auxiliary No. 5 hole and the shaft is 0.8 m;
s3: respectively filling blasting detonators for blasting into the No. 1-3 enlarged boreholes by using an explosive filling device, wherein the model of the blasting detonators is 70 #;
s4: then, controlling the detonator to explode through the detonating device, wherein the explosion can enable blasting micro-fractures of rock walls on two sides of the inner diameter of the shaft to be generated in an approximately symmetrical state, and after the micro-fractures are connected and communicated, parent bodies of the shaft wall can be separated, and approximately symmetrical V-shaped damage inner domains are formed;
s5: when the shaft is symmetrically microcracked to damage a V-shaped area of a well wall and the microcracks are broken and extend outwards and inwards, and the microcracks are formed by tensioning type cracks, detonating detonators can be respectively filled into No. 4-5 auxiliary holes through an explosive filling device, and then the detonating detonators are detonated by the detonating device, so that the damage degree of the rock wall of the well wall is increased, and the strength of the rock wall for resisting stress and strain is reduced;
s6: then, drilling equipment is utilized to form a peripheral No. 6 hole, a peripheral No. 7 hole, a peripheral No. 8 hole and a peripheral No. 9 hole on the periphery of the shaft, the formed peripheral No. 6-9 holes are respectively arranged at four diagonal positions of the shaft, then an explosive filling device is utilized to respectively fill blasting detonators for blasting into the peripheral No. 6-9 holes, then the blasting detonators are controlled to explode through the blasting detonators, and further a square shaft contour is formed, wherein specifically, the distance between the formed peripheral No. 6-9 holes is 4 m;
s7: cleaning the periphery of the expanded shaft by using cleaning equipment, and detecting the expanded shaft by using a detection device.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solution described above. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.
Claims (6)
1. The method for expanding and distributing the holes of the round shaft is characterized by comprising the following steps: the method comprises the following specific steps:
s1: firstly, sequentially forming a hole 1 for expanding a well, a hole 2 for expanding a well and a hole 3 for expanding a well on the periphery of a shaft needing well expansion by using drilling equipment, wherein the hole 1 for expanding the well is positioned on the left side part of the shaft, the hole 2 for expanding the well is positioned on the right side part of the shaft, and the hole 3 for expanding the well is positioned at the front end part of the right side end of the shaft;
s2: then, drilling equipment is utilized to form auxiliary No. 4 holes and auxiliary No. 5 holes around the shaft, the auxiliary No. 4 holes are formed in the rear end part of the right side end of the shaft, and the auxiliary No. 5 holes are formed in the rear end part of the left side end of the shaft;
s3: respectively filling blasting detonators for blasting into the No. 1-3 enlarged boreholes by using an explosive filling device;
s4: then, controlling the detonator to explode through the detonating device, wherein the explosion can enable blasting micro-fractures of rock walls on two sides of the inner diameter of the shaft to be generated in an approximately symmetrical state, and after the micro-fractures are connected and communicated, parent bodies of the shaft wall can be separated, and approximately symmetrical V-shaped damage inner domains are formed;
s5: when the shaft is symmetrically microcracked to damage a V-shaped area of a well wall and the microcracks are broken and extend outwards and inwards, and the microcracks are formed by tensioning type cracks, detonating detonators can be respectively filled into No. 4-5 auxiliary holes through an explosive filling device, and then the detonating detonators are detonated by the detonating device, so that the damage degree of the rock wall of the well wall is increased, and the strength of the rock wall for resisting stress and strain is reduced;
s6: then, drilling equipment is utilized to form a peripheral No. 6 hole, a peripheral No. 7 hole, a peripheral No. 8 hole and a peripheral No. 9 hole on the periphery of the shaft, the formed peripheral No. 6-9 holes are respectively arranged at four diagonal positions of the shaft, then an explosive filling device is utilized to respectively fill blasting detonators for blasting into the peripheral No. 6-9 holes, then the blasting detonators are controlled to explode through the blasting device, and further a square shaft outline is formed;
s7: cleaning the periphery of the expanded shaft by using cleaning equipment, and detecting the expanded shaft by using a detection device.
2. The circular wellbore well-expanding and hole-distributing method according to claim 1, characterized in that: in the step S1, the types of drilling equipment are specifically KD70 and SKD100 down-the-hole drill or 100 geological drill, and drilling is performed from top to bottom.
3. The circular wellbore well-expanding and hole-distributing method according to claim 1, characterized in that: in the step S1, the distance between the opened hole for enlarging the well 1 and the shaft is 0.3m, the distance between the opened hole for enlarging the well 2 and the shaft is 0.3m, and the distance between the opened hole for enlarging the well two and the shaft is 0.4 m.
4. The circular wellbore well-expanding and hole-distributing method according to claim 1, characterized in that: in the step S2, the distance between the opened auxiliary No. 4 hole and the shaft is 0.7m, and the distance between the opened auxiliary No. 5 hole and the shaft is 0.8 m.
5. The circular wellbore well-expanding and hole-distributing method according to claim 1, characterized in that: in the step S5, the distance between the number 6-9 peripheral holes is 4 m.
6. The circular wellbore well-expanding and hole-distributing method according to claim 1, characterized in that: in the step S2, the type of the arranged priming cap is 70 #.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111252155.0A CN114001606B (en) | 2021-10-27 | 2021-10-27 | Method for enlarging and distributing holes of circular shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111252155.0A CN114001606B (en) | 2021-10-27 | 2021-10-27 | Method for enlarging and distributing holes of circular shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114001606A true CN114001606A (en) | 2022-02-01 |
| CN114001606B CN114001606B (en) | 2023-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111252155.0A Active CN114001606B (en) | 2021-10-27 | 2021-10-27 | Method for enlarging and distributing holes of circular shaft |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007309019A (en) * | 2006-05-19 | 2007-11-29 | Kotegawa Sangyo Kk | Method of excavating vertical shaft or inclined shaft by long hole blasting |
| CN103306679A (en) * | 2013-05-21 | 2013-09-18 | 马钢(集团)控股有限公司 | '|'-shaped free surface holing one-step well completion technology |
| CN104266557A (en) * | 2014-07-31 | 2015-01-07 | 山东华联矿业股份有限公司 | Precontrol roof sublevel ore breaking once shaft forming method |
| CN105401946A (en) * | 2015-10-27 | 2016-03-16 | 中国水利水电第三工程局有限公司 | Reverse blasting excavation method of shaft and pilot shaft |
| CN109341449A (en) * | 2018-10-22 | 2019-02-15 | 临沂会宝岭铁矿有限公司 | A kind of high courtyard primary drilling Discrete control explosion well completion method of big section |
| CN109443117A (en) * | 2018-10-19 | 2019-03-08 | 远安县燎原矿业有限责任公司 | A kind of technique of no slotting Deep-space navigation |
| CN210741274U (en) * | 2019-08-08 | 2020-06-12 | 福州大学 | Construction structure for rapid well formation by deep hole blasting |
| CN112880499A (en) * | 2021-02-01 | 2021-06-01 | 中交路桥北方工程有限公司 | Smooth blasting method for tunnel weak surrounding rock |
-
2021
- 2021-10-27 CN CN202111252155.0A patent/CN114001606B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007309019A (en) * | 2006-05-19 | 2007-11-29 | Kotegawa Sangyo Kk | Method of excavating vertical shaft or inclined shaft by long hole blasting |
| CN103306679A (en) * | 2013-05-21 | 2013-09-18 | 马钢(集团)控股有限公司 | '|'-shaped free surface holing one-step well completion technology |
| CN104266557A (en) * | 2014-07-31 | 2015-01-07 | 山东华联矿业股份有限公司 | Precontrol roof sublevel ore breaking once shaft forming method |
| CN105401946A (en) * | 2015-10-27 | 2016-03-16 | 中国水利水电第三工程局有限公司 | Reverse blasting excavation method of shaft and pilot shaft |
| CN109443117A (en) * | 2018-10-19 | 2019-03-08 | 远安县燎原矿业有限责任公司 | A kind of technique of no slotting Deep-space navigation |
| CN109341449A (en) * | 2018-10-22 | 2019-02-15 | 临沂会宝岭铁矿有限公司 | A kind of high courtyard primary drilling Discrete control explosion well completion method of big section |
| CN210741274U (en) * | 2019-08-08 | 2020-06-12 | 福州大学 | Construction structure for rapid well formation by deep hole blasting |
| CN112880499A (en) * | 2021-02-01 | 2021-06-01 | 中交路桥北方工程有限公司 | Smooth blasting method for tunnel weak surrounding rock |
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| CN114001606B (en) | 2023-03-28 |
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