CN104420876A - Method for mining remained-slope and steep slope of open pit mine - Google Patents

Method for mining remained-slope and steep slope of open pit mine Download PDF

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Publication number
CN104420876A
CN104420876A CN201310413997.9A CN201310413997A CN104420876A CN 104420876 A CN104420876 A CN 104420876A CN 201310413997 A CN201310413997 A CN 201310413997A CN 104420876 A CN104420876 A CN 104420876A
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CN
China
Prior art keywords
mining
narrow
slope
steep
bulldozer
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Pending
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CN201310413997.9A
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Chinese (zh)
Inventor
张崇欣
李克民
肖双双
戴林
万忠明
张丁
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张崇欣
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Application filed by 张崇欣 filed Critical 张崇欣
Priority to CN201310413997.9A priority Critical patent/CN104420876A/en
Publication of CN104420876A publication Critical patent/CN104420876A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C41/00Methods of underground or surface mining; Layouts therefor
    • E21C41/26Methods of surface mining; Layouts therefor

Abstract

The invention relates to a method for mining the remained-slope and the steep slope of an open pit mine, particularly suitable for mining of the open pit mine during a construction period or hillside open pit mine mining. During bench combination steep slope mining, a narrow step is reserved under a bench combination step, and a bulldozer can be operated on the narrow step; the bench combination step is exploded after the narrow step with millisecond delay and is exploded by weak throwing; a blasting muck pile is controlled to extend outside while material is thrown into a goaf; the narrow step is exploded by loosening blasting; after being flattened by the bulldozer, the blasting muck pile is mined by a single-bucket shovel step by step; after mining, the narrow step is flattened by the bulldozer and is taken as a security platform. The method has the advantages that steep slope mining is adopted, so that the stability of a side slope is guaranteed while the slope angle of a working pit edge is increased, and the influence of the steep slope and wall caving to the operation safety of equipment can be avoided; when the method is applied to the hillside open pit mine, the material haul distance can be shortened.

Description

Opencut stays side steep wall mining method
Technical field
The present invention relates to a kind of opencut and stay side steep wall mining method, be specially adapted to the exploitation of capital construction of open pit mine phase or hillside open pit exploitation.This method, while raising working slope angle, ensure that the stability of side slope, avoids steep side wall caving to the impact of equipment availability safety, applies and also can shorten material haul distance in hillside open pit.
Background technology
Opencut, in process of production in order to reduce production stripping ratio, often adopts and section steep wall mining method at working pit edge.A high steep step merged into by multiple step by the method, can improve working slope angle, but reduce the stability of side slope simultaneously.On the other hand, often there is wall caving problem in high steep step, and its lower implement exists very large potential safety hazard.For solving the problem, spy provides a kind of new exploitation method.
Summary of the invention
In view of existing method Problems existing, the object of the invention is: provide one both to meet the requirement of opencut steep wall mining, the exploitation method of slope stability and equipment availability safety can be ensured again.
The technical solution used in the present invention is:
A kind of opencut stays side steep wall mining method, it is characterized in that and stay under section step that establish one can for the narrow step of bulldozer operation.And section step dass width is consistent with narrow step dass width.And section step elementary errors lags behind narrow bench blasting.Point step exploitation of monobucket shovel is adopted after quick-fried heap bulldozer leveling.After exploitation, narrow step bulldozer flattens, as safety berm.
And section step adopts weak pinpoint blasting, stretch out controlling quick-fried heap while material throwing to goaf.
Narrow step adopts loosening blasting.
The technique effect that the present invention reaches is: the deficiency overcoming tradition section steep wall mining method, and while improving working slope angle, ensure that the stability of side slope and the safety of its lower implement, overall economic efficiency significantly improves, and has practicality widely.
Accompanying drawing explanation
Accompanying drawing is schematic diagram of the present invention.
In figure: 1-section step dass, the narrow step dass of 2-, the quick-fried heap of 3-, 4-section step, the narrow step of 5-, 6-goaf.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the present invention are further described:
The side slope preparing to implement also section steep wall mining is divided into and section step (4) and narrow step (5) two parts, narrow step dass (2) width can supply a bulldozer operation, and section step dass (1) width is identical with narrow step (2).And section step (4) elementary errors lags behind narrow step (5) explosion.And section step (4) adopts weak pinpoint blasting, stretch out controlling quick-fried heap (3) while material throwing to goaf (6).Narrow step (5) adopts loosening blasting.Quick-fried heap (3) is with adopting point step exploitation of monobucket shovel after bulldozer leveling.The upper surface of narrow step (5) is flattened with bulldozer, as safety berm after exploitation.
Above-mentioned detailed description of the invention is used for explaining and the present invention is described, instead of limits the invention, and in the scope that spirit of the present invention and claim are protected, any amendment make the present invention and change, all fall into the scope of protection of the invention.

Claims (3)

1. opencut stays a side steep wall mining method, it is characterized in that and stay under section step that establish one can for the narrow step of bulldozer operation.And section step dass width is consistent with narrow step dass width.And section step elementary errors lags behind narrow bench blasting.Point step exploitation of monobucket shovel is adopted after quick-fried heap bulldozer leveling.After exploitation, narrow step bulldozer flattens, as safety berm.
2. opencut according to claim 1 stays side steep wall mining method, it is characterized in that: and section step adopts weak pinpoint blasting, stretches out controlling quick-fried heap while material throwing to goaf.
3. opencut according to claim 1 stays side steep wall mining method, it is characterized in that: narrow step adopts loosening blasting.
CN201310413997.9A 2013-09-02 2013-09-02 Method for mining remained-slope and steep slope of open pit mine Pending CN104420876A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310413997.9A CN104420876A (en) 2013-09-02 2013-09-02 Method for mining remained-slope and steep slope of open pit mine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310413997.9A CN104420876A (en) 2013-09-02 2013-09-02 Method for mining remained-slope and steep slope of open pit mine

Publications (1)

Publication Number Publication Date
CN104420876A true CN104420876A (en) 2015-03-18

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CN201310413997.9A Pending CN104420876A (en) 2013-09-02 2013-09-02 Method for mining remained-slope and steep slope of open pit mine

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CN (1) CN104420876A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105971610A (en) * 2016-06-27 2016-09-28 安徽金联地矿科技有限公司 Process for recycling and collecting open residual ore
CN106368706A (en) * 2016-08-27 2017-02-01 肖双双 Casting blast and pull shovel handling mining procedure
CN106869936A (en) * 2017-03-13 2017-06-20 中钢集团马鞍山矿山研究院有限公司 It is a kind of to be suitable to the surface mining new method of steep slope topography
CN107165636A (en) * 2017-07-21 2017-09-15 广西大学 A kind of method of strip pit exploitation
CN107503751A (en) * 2017-08-17 2017-12-22 广西大学 A kind of strip pit ore drawing chute and strip pit recovery method
CN110185449A (en) * 2019-05-29 2019-08-30 中国恩菲工程技术有限公司 For the Longhole Mining method for having unstable formation above slight slope and thin ore body
CN111006561A (en) * 2019-12-19 2020-04-14 中国水利水电第七工程局有限公司 Strong-throwing ultra-deep hole step blasting method

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CN1601054A (en) * 2004-10-10 2005-03-30 北京科技大学 Method for intensified mining deep-dished strip mine
CN1745226A (en) * 2002-12-09 2006-03-08 乔伊·W·哈曼 Mining system
CN102607341A (en) * 2012-02-27 2012-07-25 薛世忠 Stable-control blasting method for open-pit mine slopes
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US5194689A (en) * 1991-11-25 1993-03-16 Atlantic Richfield Company Earth excavation using blast casting and excavating apparatus
CN1178284A (en) * 1997-10-23 1998-04-08 北京矿冶研究总院 Open-cast and high step mining process
RU2178079C1 (en) * 2000-04-20 2002-01-10 Акционерная компания "АЛРОСА" (Закрытое акционерное общество) Method of sloping high benches on opencast limiting contour
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105971610A (en) * 2016-06-27 2016-09-28 安徽金联地矿科技有限公司 Process for recycling and collecting open residual ore
CN106368706A (en) * 2016-08-27 2017-02-01 肖双双 Casting blast and pull shovel handling mining procedure
CN106869936A (en) * 2017-03-13 2017-06-20 中钢集团马鞍山矿山研究院有限公司 It is a kind of to be suitable to the surface mining new method of steep slope topography
CN107165636A (en) * 2017-07-21 2017-09-15 广西大学 A kind of method of strip pit exploitation
CN107165636B (en) * 2017-07-21 2019-04-23 广西大学 A kind of method of strip pit exploitation
CN107503751A (en) * 2017-08-17 2017-12-22 广西大学 A kind of strip pit ore drawing chute and strip pit recovery method
CN110185449A (en) * 2019-05-29 2019-08-30 中国恩菲工程技术有限公司 For the Longhole Mining method for having unstable formation above slight slope and thin ore body
CN111006561A (en) * 2019-12-19 2020-04-14 中国水利水电第七工程局有限公司 Strong-throwing ultra-deep hole step blasting method

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