CN102926753B - Deep hole caving backfilling stoping method for artificially freezing stope roof - Google Patents
Deep hole caving backfilling stoping method for artificially freezing stope roof Download PDFInfo
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- CN102926753B CN102926753B CN201210377660.2A CN201210377660A CN102926753B CN 102926753 B CN102926753 B CN 102926753B CN 201210377660 A CN201210377660 A CN 201210377660A CN 102926753 B CN102926753 B CN 102926753B
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Abstract
The invention discloses a deep hole caving backfilling stoping method for artificially freezing the stope roof. The method comprises the following steps that: by the artificial freezing method, the stope roof which is extremely unstable is frozen into a stable freezing body, which creates conditions for personnel and equipment entering the stope; and by the big-diameter deep hole caving backfilling stoping process, the medium and deep hole caving is applied, the goaf is filled once after stoping is finished, and the freezing body is unfrozen, so that the aim of safely and highly efficiently mining ore mass with extremely unstable roof is achieved. The method is specially applied to stoping of underground metal mines which are highly difficult to mine and of which the roof has rock gaps and a developed water flowing structure and is loose, soft, fragile and extremely unstable, and has the characteristics of safety in operation, high production efficiency, high capacity of producing ore blocks and low mining cost.
Description
Technical field
The present invention relates to a kind of deep hole ore caving afterwards filling mining method, particularly relate to a kind of sub-terrain mines and manually freeze stope top board deep hole ore caving afterwards filling mining method.
Background technology
Soft broken metalliferous deposit is regarded as a kind of complicated uneasily mining orebody always, because joint fissure and the water guide structure of ore body are grown, ore deposit rock resistance to overturning is poor, allow that exposed area is little, the very easily inbreak of stope top board, personnel and equipment cannot enter operation in stope, are also difficult to adopt high efficiency mining methods.For the feature of such ore body, in traditional handicraft, under adopt, exploit to the route type method of mining by the way of filling more, ore body is divided into multiple layerings and many routes, then by constructing the top board of Man-made False as next layering orebody mining, the operation under Man-made False of personnel and equipment.Exist complex process, operating efficiency is low, nugget production capacity is low and the shortcoming such as mining and filling cost height, has affected the production capacity of whole nugget, has also restricted the use of high efficiency mining methods.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of job safety, improves panel production capacity, and that significantly reduces mining cost and filling cost manually freezes stope top board deep hole ore caving afterwards filling mining method.
In order to solve the problems of the technologies described above, what the present invention adopted manually freezes stope top board deep hole ore caving afterwards filling mining method, utilize engineering with artificial freezing method, by the utmost point built on the sand stope top board be frozen into a firm body that freezes, then freeze to adopt under top board large diameter, deep borehole ore caving afterwards filling mining technology firm, medium-length hole ore caving, one-time filling goaf after back production, finally thaws to freezing body.
According to stope structure size, first determine and freeze scope and freeze the technical requirements of body intensity, and carry out freezing parameters and design and freezing equipment type selecting, then in Chuan Mai tunnel, carry out successively: the installation and debugging of Drilling freezing hole, the installation of freezing pipeline, freezing system, freezing system running, engineering monitoring operation, be frozen into one by extremely unsteady top board and freeze body; Reach after designing requirement wait freezing body all technical, personnel and equipment enter and freeze under top board, in drilling drift under Drilling to medium-length hole, taking slot raise as the explosion scope of freedom, medium-length hole pulling end space is explosive broken as compensation space divides, and completes stoping operation; Utilize scraper to enter stope from bottom discharging tunnel and carry out ore removal; After treating ore removal, one-time filling goaf, finally thaws to freezing body.
The described utmost point built on the sand stope top board is the break and broken orebody that joint fissure and water guide structure are grown.
What adopt technique scheme manually freezes stope top board deep hole ore caving afterwards filling mining method, in the break and broken orebody of joint fissure and water guide structure growth, utilize artificial cooling technology, Drilling freezing hole, and freezing system is installed and in advance broken ore deposit (rock) body of top panel area is freezed, originally joint fissure is extremely grown or broken ore deposit (rock) body of loose shape, form one and freeze body, thereby avoid that top board collapses, inbreak; Then in firm freezing under top board, personnel and equipment enter in stope, Drilling medium-length hole big gun hole, and complete the work such as powder charge, explosion, ore removal, after back production, one-time filling goaf, finally thaws to freezing body.Thereby reach job safety, improve nugget production capacity, significantly reduce the object of mining and filling cost.
It is large that the present invention is applicable to underground underground metal mining difficulty, top board ore deposit lithofraction gap and water guide structure are grown, the soft broken utmost point in the body back production of ore deposit (rock), has been realized efficient mining technology, job safety built on the sand, nugget production capacity significantly improves, and mining cost significantly reduces.
The invention has the beneficial effects as follows, extremely unsteady stope roof rock mass is frozen into a firm body that freezes, adopt large diameter, deep borehole process for stoping, personnel and equipment can directly carry out stoping operation under top board, production capacity of mining field is large, one-time filling goaf, mining cost are low, has solved a difficult problem for ore body safe working under bad top.
Brief description of the drawings
Fig. 1 manually freezes stope top board deep hole ore caving afterwards filling mining method design front view along I-I line cut-away view in Fig. 2.
Fig. 2 is along II-II line sectional drawing in Fig. 1.
In figure: 1. level haulage tunnel, 2. broken ore, 3. slot raise, 4. medium-length hole, 5. drilling drift, 6. Chuan Mai tunnel, 7. freezes body, 8. freezing hole, 9. drilling drift connection roadway, 10. stope boundary line, 11. medium-length hole pulling end spaces, 12. bottom discharging tunnels.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
The utmost point stope top board built on the sand of the break and broken orebody of growing for joint fissure and water guide structure, utilize engineering with artificial freezing method, by the utmost point built on the sand stope top board be frozen into a firm body that freezes, then freeze to adopt under top board large diameter, deep borehole ore caving afterwards filling mining technology firm, medium-length hole ore caving, one-time filling goaf after back production, finally thaws to freezing body.
Referring to Fig. 1 and Fig. 2, Chuan Mai tunnel 6 connects level haulage tunnel 1, in stope boundary line 10, according to stope structure size, first determine and freeze scope and freeze the technical requirementss such as body intensity, and carry out freezing parameters and design and freezing equipment type selecting, then in Chuan Mai tunnel 6, carry out successively: the installation and debugging of Drilling freezing hole 8, the installation of freezing pipeline, freezing system, freezing system running, engineering monitoring operation, be frozen into one by the top board of the break and broken orebody of extremely unsteady joint fissure and water guide structure growth and freeze body 7; Reach after designing requirement wait freezing body 7 all technicals, personnel and equipment enter and freeze under top board, drilling drift 5 connects drilling drift connection roadway 9, in drilling drift 5 under Drilling to medium-length hole 4, taking slot raise 3 as the explosion scope of freedom, medium-length hole pulling end space 11 is explosive broken as compensation space divides, complete stoping operation, broken ore 2 drops in medium-length hole pulling end space 11; Utilize scraper to enter stope from bottom discharging tunnel 12 and carry out ore removal, bottom discharging tunnel 12 connects level haulage tunnel 1, and ore removal operation is under top board, to carry out freezing, and can guarantee the safety of personnel and equipment; After treating ore removal, one-time filling goaf, finally thaws to freezing body.
In whole mining process, strengthen freezing and engineering monitoring freezing the maintenance of body 7.
Claims (2)
1. one kind is manually freezed stope top board deep hole ore caving afterwards filling mining method, it is characterized in that: utilize engineering with artificial freezing method, by the utmost point built on the sand stope top board be frozen into a firm body that freezes, then freeze to adopt under top board large diameter, deep borehole ore caving afterwards filling mining technology firm, medium-length hole ore caving, one-time filling goaf after back production, finally thaws to freezing body; The described utmost point built on the sand stope top board is the break and broken orebody that joint fissure and water guide structure are grown.
2. according to manually freezing stope top board deep hole ore caving afterwards filling mining method described in right 1, it is characterized in that: according to stope structure size, first determine and freeze scope and freeze the technical requirements of body intensity, and carry out freezing parameters and design and freezing equipment type selecting, then in Chuan Mai tunnel, carry out successively: the installation and debugging of Drilling freezing hole, the installation of freezing pipeline, freezing system, freezing system running, engineering monitoring operation, be frozen into one by extremely unsteady top board and freeze body; Reach after designing requirement wait freezing body all technical, personnel and equipment enter and freeze under top board, in drilling drift under Drilling to medium-length hole, taking slot raise as the explosion scope of freedom, medium-length hole pulling end space is explosive broken as compensation space divides, and completes stoping operation; Utilize scraper to enter stope from bottom discharging tunnel and carry out ore removal; After treating ore removal, one-time filling goaf, finally thaws to freezing body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210377660.2A CN102926753B (en) | 2012-10-08 | 2012-10-08 | Deep hole caving backfilling stoping method for artificially freezing stope roof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210377660.2A CN102926753B (en) | 2012-10-08 | 2012-10-08 | Deep hole caving backfilling stoping method for artificially freezing stope roof |
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| CN102926753A CN102926753A (en) | 2013-02-13 |
| CN102926753B true CN102926753B (en) | 2014-08-06 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108894782B (en) * | 2018-07-31 | 2020-04-17 | 中南大学 | Low-temperature frost heaving cracking induced ore body caving mining method |
| CN110792471B (en) * | 2019-10-22 | 2021-05-28 | 中南大学 | Sublevel open stoping subsequent filling mining method for artificially freezing filling body |
| CN110847954B (en) * | 2019-11-15 | 2021-05-28 | 太原理工大学 | Method for re-mining empty coal seam by accumulated water in tool post type residual mining area with top plate being frozen in sections |
| CN112627817A (en) * | 2020-12-07 | 2021-04-09 | 河北钢铁集团矿业有限公司 | Mining method for large water mine by using freezing method |
| CN114109388B (en) * | 2022-01-27 | 2022-04-12 | 东北大学 | Downward sequential stepped ore stope ore dropping method for deep thick and large ore body |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2046952C1 (en) * | 1991-11-27 | 1995-10-27 | Красноярский институт цветных металлов | Permafrost rocks preparation method |
| CN1483902A (en) * | 2003-05-29 | 2004-03-24 | 中国矿业大学 | Method of distributing freezers for speeding up freezing soil and rock in local area |
| CN2758695Y (en) * | 2004-12-14 | 2006-02-15 | 沈阳农业大学 | Deep frozen soil pipe |
| CN101871218B (en) * | 2010-02-03 | 2012-04-18 | 上海隧道工程股份有限公司 | Trenchless construction method of underground station space and arc-shaped freezing pipe construction equipment thereof |
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