CN103643955B - Sublevel caving method without sill pillar mining stage casing smooth conversion method - Google Patents
Sublevel caving method without sill pillar mining stage casing smooth conversion method Download PDFInfo
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- CN103643955B CN103643955B CN201310701594.4A CN201310701594A CN103643955B CN 103643955 B CN103643955 B CN 103643955B CN 201310701594 A CN201310701594 A CN 201310701594A CN 103643955 B CN103643955 B CN 103643955B
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Abstract
The present invention provides a kind of sublevel caving method without sill pillar mining stage casing smooth conversion method, comprises and is as short as preset parameter when mining upper stage casing Stope chute becomes, and carries out extending to upper stage casing stope by mining lower stage casing Stope chute; Wherein, while under mining stage casing Stope chute extends to stage casing stope, in the developing construction of lower stage casing, the mine locating of ore body lower wall border will carried out, it is determined that the medial section in lower stage casing and the well position of Stope chute. Utilize above-mentioned sublevel caving method without sill pillar mining stage casing smooth conversion method can solve in the ore underproduction problem adopting the stage casing transition period occurred in sublevel caving method without sill pillar mining to occur.
Description
Technical field
The present invention relates to mining technical field, more specifically, it relates to a kind of sublevel caving method without sill pillar mining stage casing smooth conversion method.
Background technology
At present, in the exploitation of big-and-middle-sized underground mine, adopt bottom-column-free sectional caving stoping method both at home and abroad more. Mine is generally divided into several mining stage casings from top to bottom by these mining methods, then divides multiple back production segmentation in each mining stage casing. Wherein, mining stage casing is provided with many independent Stope chute, many Stope chute lead to each segmentation in this stage casing each respectively, adopt for segmentation and cut and level bottom back production ore deposit rock rolling to this stage casing, therefore generally bottom this stage casing, level is provided with Orbital Transport Systems, undertakes rolling and the transport task of all ore deposits, this stage casing rock.
Wherein, the back production of segmentation needs to slot upwards fan-pattern holes in entry, collapses the avalanche district squeeze blasting of step pitch to full barren rock with little, and by the ore under collapsing under loose overlying strata, directly transports to carrier loader from the end bottom plate of entry and slips well. These mining methods are applicable to adopting the exploitation of large-scale trackless mechanised equipment, and mining intensity and throughput are all very big.
But, in actual applications, along with back production segmentation decline, the problem of several upper and lower two adjacent stage casing mining conversions will be run into every several years. The main problem that this stage casing transition period often exists has:
(1) on the transition period, stage casing Stope chute becomes short gradually, and the minimizing that Stope chute deposits ore deposit amount will make mining, confession ore deposit and level haulage influence each other and highlight gradually;
(2) on the transition period, stage casing is effectively reduced gradually for ore deposit stope, for ore deposit ability rapid decrease;
(3) part transportation facilities in transition period stage casing is removed and is reclaimed, and lower wall transportation roadway, route etc. are adopted and cut engineering and step up to construct and give prominence to the mutual restricted influence of level haulage;
(4) upgrading of stage casing transition and conversion restriction lower stage casing prepared ore reserve, blocked-out ore reserve, causes conversion later stage stope to adopt standard, blocked-out ore reserve deficiency, directly affects stope for ore deposit ability.
Therefore, need a kind of new mining methods that can solve the problem affecting mining capacity that the above-mentioned stage casing transition period exists badly.
Summary of the invention
In view of the above problems, it is an object of the invention to provide a kind of sublevel caving method without sill pillar mining stage casing smooth conversion method, with the stage casing transition period solved at present in adopting sublevel caving method without sill pillar to dig up mine occur for the decline of ore deposit ability, the low inferior problem of production efficiency.
Sublevel caving method without sill pillar mining stage casing smooth conversion method according to the present invention comprises:
It is as short as preset parameter when mining upper stage casing Stope chute becomes, mining lower stage casing Stope chute is carried out extending to upper stage casing stope;
While under mining stage casing Stope chute extends to stage casing stope, in the developing construction of lower stage casing, the mine locating of ore body lower wall border will carried out, it is determined that the medial section in lower stage casing and the well position of Stope chute.
Wherein, in the developing construction of lower stage casing, construction medial section lower wall lane and Liu Jinglian lane along the pulse, stage casing.
Wherein, stage casing Stope chute under mining is being extended in the process of stage casing stope, the head in lower stage casing is adopted segmentation slip well is connected to upper stage casing do not adopt segmentation, make adjacent two stage casings be merged into a stage casing for ore deposit.
Wherein, after mining stage casing Stope chute is carried out extend to upper stage casing stope, the ore in upper stage casing is released by the well that slips in lower stage casing, transport and is promoted.
Utilize the above-mentioned sublevel caving method without sill pillar according to the present invention mining stage casing smooth conversion method, it is ensured that adopt the stage casing transition period smooth transition of sublevel caving method without sill pillar mining, also achieve volume increase target simultaneously, it is to increase the overall efficiency in mine.
In order to realize above-mentioned and relevant object, one or more aspects of the present invention comprise after will illustrate in detail and the feature that particularly points out in the claims. Explanation below and accompanying drawing specifically understand some illustrative aspects of the present invention. But, these aspects instruction be only the principle that can use the present invention various modes in some modes. In addition, the present invention be intended to comprise all these aspects and they etc. jljl.
Accompanying drawing explanation
By reference to below in conjunction with the content of the description of the drawings and claim book, and will more understand and easy to understand along with the understanding more comprehensively to the present invention, other object of the present invention and result. In the accompanying drawings:
Fig. 1 is the mining of sublevel caving method without sill pillar according to embodiments of the present invention stage casing smooth conversion method schematic diagram.
Reference numeral wherein comprises: arteries and veins 1 is worn in lower stage casing, arteries and veins 2 is worn in upper stage casing, lower stage casing Stope chute 3, upper stage casing Stope chute 4, the former well 5 that slips in upper stage casing.
The label similar or corresponding feature or function of instruction identical in all of the figs.
Embodiment
Below with reference to accompanying drawing, specific embodiments of the invention are described in detail.
Fig. 1 shows the mining of sublevel caving method without sill pillar according to embodiments of the present invention stage casing smooth conversion method schematic diagram.
In the embodiment shown in fig. 1, adopt sublevel caving method without sill pillar to carry out in the process exploited in mine ,+50m be segmented into stage casing do not adopt segmentation ,+35m is segmented into stage casing haulage level ,+5m is segmented into lower stage casing medial section. By on the adjustment conversion of downward stage casing, stage casing process in, adopt and extend segmentation stope bottom the lower supreme stage casing of Stope chute 3, stage casing, while the lower stage casing Stope chute 3 of mining is extended to stage casing stope, carry out the method for the developing construction in stage casing under ore body.
Wherein, under mining, stage casing Stope chute 3 extends in the process of stage casing stope, the head in lower stage casing is adopted segmentation slip well is connected to upper stage casing do not adopt segmentation, it is connected with upper stage casing Stope chute 4 by lower stage casing Stope chute 3, adjacent two stage casings are made to be merged into a stage casing for ore deposit, it is achieved the target of mining volume increase.
Carrying out the developing construction of lower stage casing carries out the mine locating of ore body lower wall border, it is determined that the medial section in lower stage casing and the well position of Stope chute, accelerate stage casing developing construction. By the lower wall of lower stage casing medial section of constructing lane and Liu Jinglian lane along the pulse, the high well that slips is divided into two sections and constructs, and the head in lower stage casing adopt segmentation slip well receives upper stage casing do not adopt segmentation, make the ore in stage casing release by lower stage casing Stope chute 3, transport and promote.
Specifically, lower stage casing Stope chute 3 is being connected with upper stage casing Stope chute 4, + 35m level is upper stage casing haulage level, head as lower stage casing adopts segmentation, and the lower level haulage level to-40m level is put in the down-hole that newly slips formed that is connected with upper stage casing Stope chute 4 through lower stage casing Stope chute 3 by the ore in upper stage casing, meanwhile medial section+5m the segmentation in lower stage casing is carried out the developing construction in arteries and veins lane, the new kaolin suspension formed that is connected with upper stage casing Stope chute 4 by lower stage casing Stope chute 3 is divided into two sections of constructions, while accelerating speed of application, construction safety can be guaranteed.
Wherein, after lower stage casing Stope chute 3 is connected with upper stage casing Stope chute 4, there is the former well 5 that slips in upper stage casing that part upper stage casing Stope chute 4 is not connected with lower stage casing Stope chute 3, on this, stage casing is former slips the transferring and transporting of ore that well 5 continues on for not adopting in upper stage casing. Arteries and veins 1 is worn in lower stage casing wherein and upper stage casing is worn arteries and veins 2 effects such as the back production of ore, transport are outer also to be had for understanding ore body and top, floor rocks in the effect of the change of thickness direction except having, and is convenient to that ore body carries out developing and constructs.
Specifically, exemplarily, in mine by+35m stage casing in the process of-40m stage casing adjustment conversion, upper stage casing Stope chute 4 becomes short gradually, the influencing each other of ore transport making mining for ore deposit and stage casing is highlighted by the ore deposit amount of depositing of upper stage casing Stope chute 4 reduce gradually, now by the sublevel caving method without sill pillar mining stage casing smooth conversion method of the present invention, lower stage casing Stope chute 3 is extended to upper stage casing stope, + 35m level is as upper stage casing haulage level, head as lower stage casing adopts segmentation, solve the short well that slips, transport and the serial problem dug up mine and influence each other and bring.
Above mentioned problem, on transition period, the effective of stage casing reduces gradually for ore deposit stope, for ore deposit ability rapid decrease, dismounting is reclaimed by the part transportation facilities in stage casing, lower wall transportation roadway, routes etc. adopt the impact cutting the mutual restriction that engineering steps up construction and level haulage will be particularly outstanding, now by the sublevel caving method without sill pillar mining stage casing smooth conversion method of the present invention, while lower stage casing Stope chute 3 is extended to stage casing stope, in the developing construction of lower stage casing, carry out the mine locating of ore body lower wall border fast, determine the well position of medial section and Stope chute, accelerate stage casing developing construction, solve the problem adopted and cut engineering and step up the mutual restriction constructed with level haulage and bring.
As for the extension of lower stage casing Stope chute of when implementing to dig up mine, it is possible to according to the particular case setting of mining working-yard. Such as, the transmittability of the transmission system set by each stage casing is that the expectation according to this stage casing is determined for ore deposit ability, along with the continuous exploitation of this stage casing ore, effective slip well for ore deposit and reduce gradually, also declining gradually for ore deposit amount of this stage casing, causes increasing gradually for the difference of ore deposit ability and transportcapacity causing the exploitation benefit of ore obviously to decline. In a specific embodiment of the present invention, set when being less than 60% for ore deposit ability with transportcapacity ratio, mining lower stage casing Stope chute is extended to upper stage casing stope, give full play to the transport effect of haulage system, transportcapacity is balanced each other with for ore deposit ability, meet preset parameter, it is achieved the target of volume increase.
Above-mentioned default parameter is a concrete enforcement mode, it is also possible to be arbitrary parameter according to the requirement of the on-the-spot equipment of mining and productivity by this optimum configurations, but relatively good Selecting parameter scope is 50%��70%.
In sum, sublevel caving method without sill pillar provided by the invention mining stage casing smooth conversion method, the upper stage casing Stope chute that the stage casing transition period that can solve in adopting sublevel caving method without sill pillar to dig up mine occurs becomes short gradually, reduce for ore deposit amount, for ore deposit ability rapid decrease, cause conversion later stage stope to adopt the problems such as standard, blocked-out ore reserve deficiency, mining capacity decline. Make the mining in the stage casing transition period not only there is no the underproduction, and realize the target of volume increase.
Above with reference to figure accompanying drawing, the mining of the sublevel caving method without sill pillar according to the present invention stage casing smooth conversion method is described in an illustrative manner. However, it will be understood by those skilled in the art that, for above-mentioned sublevel caving method without sill pillar proposed by the invention mining stage casing smooth conversion method, it is also possible to make various improvement on the basis not departing from content of the present invention. Therefore, protection scope of the present invention should be determined by the content of appending claims.
Claims (3)
1. a sublevel caving method without sill pillar mining stage casing smooth conversion method, comprising:
It is as short as preset parameter when mining upper stage casing Stope chute becomes, mining lower stage casing Stope chute is extended to stage casing stope in described mining; Wherein,
Undertaken extending in described mining while the stope of stage casing by stage casing Stope chute under described mining, under described mining in stage casing developing construction, carrying out the mine locating of ore body lower wall border, it is determined that the medial section in stage casing and the well position of Stope chute under described mining, and,
In the process that stage casing Stope chute under described mining carries out extending to stage casing stope in described mining, the head in stage casing under described mining is adopted segmentation slip well is connected in described mining stage casing do not adopt segmentation, it is connected with stage casing Stope chute in described mining by stage casing Stope chute under described mining, adjacent two stage casings are made to be merged into a stage casing for ore deposit
Wherein, under described mining in stage casing developing construction, by the lower wall of stage casing medial section under described mining of constructing lane and Liu Jinglian lane along the pulse, the new kaolin suspension formed that is connected with stage casing Stope chute in described mining by stage casing Stope chute under described mining is divided into two sections of constructions.
2. sublevel caving method without sill pillar mining stage casing as claimed in claim 1 smooth conversion method, wherein, is undertaken extending in described mining after the stope of stage casing by stage casing Stope chute under described mining,
In described mining, the ore in stage casing is released by the Stope chute in stage casing under described mining and transport.
3. sublevel caving method without sill pillar mining stage casing as claimed in claim 1 smooth conversion method, wherein,
Described preset parameter is 60%, causes when being less than 60% for ore deposit ability with transportcapacity ratio of stage casing in described mining when stage casing Stope chute in described mining becomes short-range missile, stage casing Stope chute under described mining is extended to stage casing stope in described mining.
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| CN108397194A (en) * | 2018-02-23 | 2018-08-14 | 河北钢铁集团矿业有限公司 | The last stage casing ore body mining smooth transition method of sublevel caving method without sill pillar |
| CN111706331B (en) * | 2020-07-07 | 2022-03-15 | 酒泉钢铁(集团)有限责任公司 | Construction method for underground vein outer vein-following roadway |
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