CN1904313A - Concrete pole top protection mining method - Google Patents
Concrete pole top protection mining method Download PDFInfo
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- CN1904313A CN1904313A CN 200610051170 CN200610051170A CN1904313A CN 1904313 A CN1904313 A CN 1904313A CN 200610051170 CN200610051170 CN 200610051170 CN 200610051170 A CN200610051170 A CN 200610051170A CN 1904313 A CN1904313 A CN 1904313A
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Abstract
This invention discloses a kind of concrete post canopy guard mining method, it belongs to mining method assembling pillar canopy guard in the mine, this mining method includes five working procedure ,they are (1) exploit, grubbing in the level of the chain along the chain; (2) digging the concrete post slot: digging the concrete post slot along ore body incline to the upward according to certain perpendicular spacing or according to certain intersection angle in the level of exploit; (3) pouring the concrete post: making a model in the concrete post slot and concreting the concrete post immediately, using the technology that the concrete and the ore body roof touches closely to ensure the intensity of the concrete post; (4) cutting: digging the need working space in the ore body between two concrete post slots along ore body incline to the upward according to certain perpendicular spacing or according to certain intersection angle (5) backstopping: the common mining handicraft can be used to backstopping after the cutting and the upper part is through. The concrete post mining method in this invention has the following merits that the technology is simple, it is easy to grasp ,the management is convenient, backstopping condition is safety and the recovery rate of the ore is high, it is applied to exploit the ore under level or incline in firm mining rock.
Description
Technical field
The present invention relates to mining methods,, relate in particular to the mining methods of protecting the top with the concrete post in particular to the mining methods that mounting column in mine protects the top.
Background technology
Ore is the non-renewable resource that the Nature is given human preciousness.Along with the mankind to the increase of ore resource demand and constantly exploitation, ore resource is reducing apace, how making full use of existing resources has become the problem that people must conscientiously study.In existing mining methods, generally adopt pre-pillar to be used to support the method for ore body roof, these ore pillars itself are exactly the ore that necessary for human is wanted, generally speaking because ore pillar causes the loss amount of ore between 20%～40%, even have up to 50%, its amount is considerable, if do not reclaimed, certainly will cause the loss of resource; And ore pillar has a lot of joints and bedding, and the stability of its support is also undesirable.
The mining methods that occur except the method for original pre-pillar, are utilized the mining methods of anchor pole and ore pillar together support, for example Chinese patent ZL03135109.3 " anchor pole of phosphorate rock mining protects the top sublevel open stope method " in addition at present.This method needs whole mine to take unified exploitation to arrange, and the orebody thickness that is suitable for is big, is not suitable for the less ore body of thickness, and also leaves ore and make ore pillar, and it is also not really thorough to reclaim ore.
Summary of the invention
The object of the present invention is to provide a kind of concrete pole top protection mining method, replace ore pillar that ore body roof is supported, with being used to support the ore pillar recovery of ore body roof originally, to reach the purpose of better recovery ore resource with the concrete post.
For achieving the above object, the inventor provides by the mining technology of adopting standard, pick concrete post groove, building the concrete post, cutting, five operations of back production are formed, and the particular content of each operation is:
(1) adopt standard: after development engineering forms, dig up mine when preparing, for inclined orebody, adopting accurate process is by the high reef drift that tunnels along the pulse of 8～10m section; To horizontal ore body, adopting accurate process is by the tiltedly long reef drift that tunnels along the pulse of 10～15m along the ore body tendency for gently inclined orebody.
(2) pick concrete post groove: in adopting accurate gallery, vertically or by certain included angle upwards dig concrete post groove, concrete post groove width 3～6m along the ore body tendency according to the spacing of 10～20m.
(3) build the concrete post: formwork erection is built the concrete post in concrete post groove, adopt concrete closely to contact with ore body roof to guarantee the concrete post, carry out the construction of concrete post according to the intensity of designing requirement and guarantee that the intensity of concrete post satisfies the requirement of roof supporting with the tight construction technology that contacts of ore body roof.
(4) cutting: the ore body intermediate vertical between two concrete ore pillars or upwards excavate the space of stoping operation necessity along ore body tendency by certain included angle, carry out back production and prepare.
(5) back production: after cutting and last segmentation are hole-throughd, can carry out formal actual mining from top to bottom.Process for stoping is conventional mining technology, comprising: rock drilling, explosion, ventilation, the processing of top board float stone, anchor top, broken bulk and ore removal.Concrete action is:
1. rock drilling: generally with 7655 or jumbo stamp to eye, the dark 1.5～15m of eye will decide according to the equipment situation in each mine and ore body and top board situation.
2. explosion: generally adopt ammonium nitrate-fuel oil mixture or nitrolite explosion.With the fuse blasting cap initiation that kindles a fire.
3. ventilate: need ventilation behind the ore caving, blasting fume is got rid of, just can enter the work plane operation through after a while.When carrying out stoping operation, also need constantly to ventilate, supply with operating personnel's fresh air.
4. top board float stone processing, anchor top: in order to guarantee the job safety of workman and equipment, must remove all movable float stones of top board,, must carry out anchoring, prevent roof fall for the movable float stone that can't remove.
5. broken bulk: the lump ore that digging is got off carries out fragmentation, so that move and transport.
6. ore removal: use equipment goes out mineral building with the ore handling under quick-fried, and the fortune of packing into ore deposit equipment is transported to ore stockyard or drop shaft with ore.
The intensity of concrete post is to determine according to the hardness factor of ore body, and its value is the average more than or equal to ore body compressive strength; The layout of concrete post need combine with the technology of ore extraction, the spacing of utilizing cutting to arrange is arranged the concrete post, walks upwards to use the mould of ore body as the concrete post itself, only formwork erection on tendency, utilize the high relatively mould of high standard as charging aperture, finally close up from the relative Gao Mo of high standard.
The concrete post is the key technology that the concrete post is constructed with the tight construction technology that contacts of ore body roof, it is concrete post mining codes key of success, for this reason, the inventor when building the concrete post, taked when concrete post and ore body roof near the time wedge shape space that the forms technology of filling, comprise following measure: one is to use and sprays concrete concrete post and ore body roof are coupled together; Two are to use slurry injection technique, with grouting pump cement mortar are annotated between the concrete post and ore body roof, and three are to use wooden pestle or iron pestle to carry out the hand punning filling from top to bottom, the concrete body is reached closely with ore body roof contact.
The present invention removes to replace having the ore pillar of a lot of joints and bedding with the concrete post of structure denser, its overall performance is better than ore pillar, and stability is bigger than ore pillar, and the strength ratio ore pillar is strong, thereby can give play to, thereby the safety that has improved ore recuperation than ore pillar supporting role preferably; The inventive method can also reduce the wasting of resources, reclaims ore resource more, creates direct considerable economic and bigger social benefit; The barren rock that the down-hole produced can be directly used in the rubble raw material of pouring concrete post, has reduced down-hole waste discharge amount, has both saved the waste discharge cost of transportation, reduces the pollution to ground surface environment again; The construction of concrete post can be used mechanical execution, can reduce labour intensity, constructs on a large scale, satisfies the big production of scale, enhances productivity; The also available rail equipment of its available trackless equipment of digging up mine, the most suitable trackless mining equipment is dug up mine.
In sum, as seen concrete pole top protection mining method of the present invention has simple, the easy grasp of technology, convenient management, back production condition relatively safety and ore recovery ratio advantages of higher, be the very effective mining methods of thick following ore body during the quarry petrofacies extremely tilt to firm level, in rare, valuable or high-grade mineral deposit, has good practical value as mines such as gold, rare ore body, phosphorus, alum clay, iron ore, plumbous zinc ores.
Description of drawings
Fig. 1 is concrete post mining codes process flow diagrams, and Fig. 2 is concrete post mining codes principle schematic, and Fig. 3 is that A-A is to view.1 is ore body among the figure, and 2 is the concrete post, and 3 are cutting, and 4 are the ore deposit heap, and 5 is concrete post groove, and 6 for adopting accurate gallery, and 7 is ore body roof, and 8 is the ore body base plate.
The specific embodiment
Embodiment:
Phosphorylcholine group is opened a mine in mining industry parent company blissful section north section 824m level～838m level and 815m level～824m level in Guizhou, its basic geological conditions is: (1) ore bed (Zbp): be mainly compact massive, the banded phosphorite of granular, thin crystal bar, ore body is stablizes the stratiform output, structure is single, ore is crisp, the inclination angle is generally at 5 °～15 °, thickness 3～4m.(2) top board: immediate roof (Zbd3): this layer also claims " false top ", and lithology is complicated and changeable, and disappearance is arranged mutually, and is extremely unstable.This layer thickness 0～9m, general 1～4m, the utmost point built on the sand, F=1～4.Indirect top board (Zbdn1): for lamp shadow group rock stratum first section, be commonly called as " old top ", be greyish white, the thin brilliant dolomite of grey thick-layer, this bed thickness is 30～35m, and is firm, F=8～10.(3) base plate (Zbd1): the ore bed immediate bottom is that yellow-gray is as thin as the phosphorous chiltern dolomite of medium bed, thickness 0.19～2.53m, and about general 0.8m, moderately stable.(4) Nan Tuo group, Banxi Group clear water river group (Ptbnq): aubergine shale, siltstone, built on the sand, F=3～5.
Concrete performance is: the high 14m of being of 824m level～838m horizontal segment, and tilt length is 35m, strike length is 300m; 815m level～high the 9m of 824m horizontal segment, tilt length is 30m, strike length is 350m.Pick one cutting gallery between the one cutting gallery of pick between 824m level～838m level and 815m level～824m level, with ore body on tendency at interval 15～20m by cutting with adopt standard and be divided into ore body band on the across pitch, carrying out the construction of concrete post to pick concrete post groove on the spacing of 15～20m at interval on these bands then, after treating that the final set of concrete post reaches the intensity of design, open cutting again and carry out the back production of ore between two concrete posts, the order of its back production is: carry out back production by strap ends to the main haulage roadway direction.By the back production of 824m level, ore recovery ratio reaches 91%, has improved ore recovery ratio greatly.
The mineral building production capacity of building up is 500t/d, and its mineral building inscape is as follows:
| Section high (inclined orebody) | Tiltedly long (gently inclined orebody) | The mineral building across pitch is wide | The concrete post is wide | Concrete column length (across strike) | Concrete post height | The concrete intercolumniation | |
| Across pitch | Across | ||||||
| 8～10m | 10～15m | 10～20m | 3～6m | 4～10m | The ore body vertical thickness | 10～20m | 10～15m |
The technical-economic index that obtains is: ore dilution rate 6%; Ore loss ratio is 5～20%; The digging ratio is 60～90m/kt; Labour productive forces are 50～100t/ work team.
Claims (4)
1 one kinds of concrete pole top protection mining methods belong to the mining methods that mounting column protects the top in mine, it is characterized in that these mining codes by the mining technology of adopting standard, pick ore pillar groove, building the concrete post, cutting, five operations of back production are formed, and the particular content of each operation is:
(1) adopt standard: for inclined orebody, adopting accurate process is by the high reef drift that tunnels along the pulse of 8～10m section; To horizontal ore body, adopting accurate process is by the tiltedly long reef drift that tunnels along the pulse of 10～15m along the ore body tendency for gently inclined orebody;
(2) pick concrete post groove: in adopting accurate gallery, vertically or by certain included angle upwards dig concrete post groove, concrete post groove width 3～6m along the ore body tendency according to the spacing of 10～20m;
(3) build the concrete post: formwork erection is built the concrete post in concrete post groove, adopts the concrete post closely to contact with ore body roof to guarantee the concrete post with the tight construction technology that contacts of ore body roof, guarantees that the intensity of concrete post satisfies the requirement of roof supporting;
(4) cutting: the ore body intermediate vertical between two concrete ore pillars or upwards excavate the space of stoping operation necessity along ore body tendency by certain included angle, carry out back production and prepare;
(5) back production: after cutting and last segmentation are hole-throughd, can carry out formal back production from top to bottom.
2 concrete pole top protection mining methods as claimed in claim 1 is characterized in that the intensity level of above-mentioned concrete post is the average more than or equal to ore body compressive strength.
3 concrete pole top protection mining methods as claimed in claim 1, the layout that it is characterized in that the concrete post need combine with the technology of ore extraction, the spacing of utilizing cutting to arrange is arranged the concrete post, walk upwards with the mould of ore body itself as the concrete post, formwork erection on tendency only, utilize the high relatively mould of high standard as charging aperture, finally close up from the relative Gao Mo of high standard.
4 concrete pole top protection mining methods as claimed in claim 1, it is characterized in that described concrete post and ore body roof tight contact construction technology be when concrete post and ore body roof near the time wedge shape space that the forms technology of filling, comprising: (1) is used and is sprayed concrete concrete post and ore body roof are coupled together; (2) use slurry injection technique, cement mortar is annotated between the concrete post and ore body roof with grouting pump; (3) use wooden pestle or iron pestle to carry out the hand punning filling from top to bottom.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100511708A CN100552185C (en) | 2006-08-01 | 2006-08-01 | Concrete pole top protection mining method |
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| CNB2006100511708A CN100552185C (en) | 2006-08-01 | 2006-08-01 | Concrete pole top protection mining method |
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| CN1904313A true CN1904313A (en) | 2007-01-31 |
| CN100552185C CN100552185C (en) | 2009-10-21 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370283A (en) * | 2015-11-23 | 2016-03-02 | 武汉理工大学 | Mechanical precut slot blasting mining method of slightly inclined thin jade ores |
| CN105626069A (en) * | 2016-01-19 | 2016-06-01 | 中国海洋石油总公司 | Outer-masonry and inner-concrete artificial pillar and construction method thereof |
| CN107816359A (en) * | 2017-11-07 | 2018-03-20 | 东北大学 | A kind of construction method of the artificial pillar of underground engineering |
| CN111075449A (en) * | 2019-12-23 | 2020-04-28 | 中国华冶科工集团有限公司 | Continuous mining method for unstable ore body |
-
2006
- 2006-08-01 CN CNB2006100511708A patent/CN100552185C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370283A (en) * | 2015-11-23 | 2016-03-02 | 武汉理工大学 | Mechanical precut slot blasting mining method of slightly inclined thin jade ores |
| CN105626069A (en) * | 2016-01-19 | 2016-06-01 | 中国海洋石油总公司 | Outer-masonry and inner-concrete artificial pillar and construction method thereof |
| CN105626069B (en) * | 2016-01-19 | 2018-04-27 | 中国海洋石油集团有限公司 | Concrete artificial ore pillar and its construction method in a kind of outer block |
| CN107816359A (en) * | 2017-11-07 | 2018-03-20 | 东北大学 | A kind of construction method of the artificial pillar of underground engineering |
| CN111075449A (en) * | 2019-12-23 | 2020-04-28 | 中国华冶科工集团有限公司 | Continuous mining method for unstable ore body |
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| Publication number | Publication date |
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| CN100552185C (en) | 2009-10-21 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUIZHOU KAILIN GROUP CO., LTD. Free format text: FORMER NAME: KAILIN (GROUP) CO., LTD., GUIZHOU |
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| CP03 | Change of name, title or address |
Address after: No. 237 Jinyang City Kailin Lake District Road 550009 Guizhou city of Guiyang Province Patentee after: Phosphorylcholine group limited-liability company is opened in Guizhou Address before: 550002, Haitian building, No. 203 Zhonghua South Road, Guizhou, Guiyang Patentee before: Guizhou Kailin (Group) Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170621 Address after: No. 237 Jinyang City Kailin Lake District Road 550081 Guizhou city of Guiyang Province Patentee after: Guizhou Kailin Design Institute Co. Ltd. Address before: No. 237 Jinyang City Kailin Lake District Road 550009 Guizhou city of Guiyang Province Patentee before: Phosphorylcholine group limited-liability company is opened in Guizhou |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091021 Termination date: 20200801 |