CN101881169A - Sublevel shrinkage caving stage open stope afterwards filling mining method - Google Patents
Sublevel shrinkage caving stage open stope afterwards filling mining method Download PDFInfo
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- CN101881169A CN101881169A CN 201010217733 CN201010217733A CN101881169A CN 101881169 A CN101881169 A CN 101881169A CN 201010217733 CN201010217733 CN 201010217733 CN 201010217733 A CN201010217733 A CN 201010217733A CN 101881169 A CN101881169 A CN 101881169A
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Abstract
The invention discloses a sublevel shrinkage caving stage open afterwards filling mining method. In the earlier stage of stoping, caved ores are utilized to support surrounding rocks on a top tray, and in the later stage of stoping, a goaf area is filled with fillers to control ground pressure so as to achieve safe and efficient mining. Ore blocks are mined in two steps, mining blocks in step two are stoped after the mining blocks in step one are stoped and filled. After the ores are completely let out, the goaf area is filled with the fillers to control the ground pressure. Because the stoping modes of sublevel ore caving, sublevel shrinkage, final ore drawing and empty area afterwards filling are adopted, the mining method has large one-time filling amount and low cost; the method adopts middle-deep hole drilling and blasting and carry scraper ore removal, and the device has high level and large production capacity; the method has the advantages of large production capacity of the sublevel caving method and the stage open stope method, high recovery rate of the filling method, and earth surface protection; the safety is good, and drilling, ore removal and other operations are all carried out in a sublevel drilling and ore removal approach roadway; and the ores can be removed in advance, and the ores can be removed partially after the first sublevel is ready.
Description
Technical field
The present invention relates to metalliferous deposit actual mining technology field, the mining methods that particularly provide a kind of sublevel shrinkage caving mining codes to combine with stage open stope afterwards filling mining method.
Background technology
Metalliferous deposit during by back production the underground pressure management method be divided into openstope method, the method for mining by the way of filling and caved stopes three major types.Caved stopes is low with cost, efficient is high, job safety, has obtained using widely at metal mine and non-metal mine.But it is higher that its maximum defective is the loss late of ore and the rate of dilution, causes mineral resources to waste in a large number.Ore loss ratio, the basic reason that the rate of dilution is big are the ore drawing modes of cut off grade ore drawing under the covering layer, and the ore deposit rock at the drawhole place a large amount of doping has taken place.
Sweden Ji Lvna iron ore is tested the sublevel shrinkage caving mining codes since the seventies in last century, sublevel caving method without sill pillar is combined with sill pillars sublevel caving method, ore major part under extracting drift collapses stays put and emits by the stope bottom at last, not immediate shipments, ore deposit rock contact area is relatively little, and loss late, the rate of dilution are effectively controlled.This mining methods also obtain certain popularization in China, but in some mine because the face of land or top ore body need protection, it is former thereby can not use that the face of land does not allow to subside etc.
Summary of the invention
The objective of the invention is to problem at above existence, be metal and nonmetal mine inclination gentle dip, be as thin as the mining methods that middle thickness orebody provides a kind of loss and dilution is low, safe and efficient, cost is low novel sublevel shrinkage caving mining codes to combine with stage open stope mining afterwards filling method.
The technical scheme of technical solution problem of the present invention is: mining methods of the present invention, according to mining technology characteristics and country rock physico-mechanical properties, back production utilizes broken ore to support country rock in earlier stage, press on back production later-stage utilization casting resin bashing control ground, to reach safe and efficient mining.
Concrete grammar is: nugget is back production in two steps, after a step, mining blocks back production filling was finished, and two step of back production mining blocks.Nugget vertically is divided into plurality of segments, arranges the segmentation tunnel along orebody trend at the ore body lower wall, keeps at a certain distance away from the vertical orebody trend in segmentation tunnel and tunnels rock drilling ore removal route arrival dish, as the main tunnel of back production.Each segmentation explosion back production from top to bottom, explosion in rock drilling ore removal route from coil and advance to lower wall, emit about 30% of each quick-fried ore that falls by the rock drilling route, all the other are left to, and the stage casing explosion is intact emits from the stope bottom, the bottom ore drawing from lower wall upwards dish carry out successively.After ore is all emitted, use the casting resin bashing, press on control ground.
Technique effect of the present invention is: owing to adopted the back production mode of segmentation ore caving, segmentation shrink, final draw, afterwards filling dead zone, this mining methods primary filling amount is big, and cost is low; Adopt medium-length hole drilling and blasting, scraper ore removal, equipment height, production capacity are big; Ore under quick-fried can have interim supporting role to the obturation of country rock and exposure; An a large amount of ore removal stage is arranged, help guaranteeing the output equilibrium than layering, sublevel fill stoping method; Back production and filling operation are not disturbed mutually, and restricting relation is few than layering, sublevel fill stoping method.It is big and the filling method rate of recovery is high and the advantage on the protection face of land to have sublevel caving method, stage open stope method production capacity concurrently: safety is good, and operations such as rock drilling ore removal are all carried out in sublevel drilling ore removal approach roadway; Can shift to an earlier date ore removal, after first segmentation is ready to, can the part ore removal.
Description of drawings
Fig. 1 is the vertical perspective view of concrete structure of the present invention.
Fig. 2 is a concrete structure vertical view of the present invention.
Fig. 3 is a concrete structure sectional drawing of the present invention.
1, lower wall haulage way, 2, the segmentation tunnel, 3, the segmentation connection roadway, 4, People's Bank of China's ventilating shaft, 5, extracting drift, 6, filling well, 7, the airway, 8, the cutting tunnel, 9, slot raise, 10, fanhole(s), 11, drop shaft, 12, the ore removal route, 13, the moat ditch, 14, the ore removal tunnel.
The specific embodiment
Describe in detail below in conjunction with drawings and Examples:
As Fig. 1, Fig. 2 and shown in Figure 3,,, and coil on prolongation construction extracting drift (5) the arrival ore body by People's Bank of China's ventilating shaft (4) construction segmentation connection roadway (3) at ore body lower wall driving lower wall haulage way (1).Along last web circle construction cutting tunnel (8) and slot raise (9), be the production ore space that affords redress, explosion is gone up dish certainly along extracting drift (12) and is carried out successively to lower wall, the parallel fanhole(s) of Drilling (10), the quick-fried ore that falls transports about 30% by segmentation tunnel (2), remaining ore is stayed in the stope, at last by moat ditch (13), ore removal route (12), ore removal tunnel (14) and drop shaft (11) ore removal.
Constitute ventilation circuit by lower wall haulage drift (1), People's Bank of China's ventilating shaft (4), segmentation tunnel (2), segmentation connection roadway (3), airway (7) etc., ensure district ventilation.
The back production initial stage can be played stably the effect of pressing owing to persist ore, ore removal in a large number in the extracting drift, so the underground pressure management input is little, engineering maintenance is easier to.The stage casing back production is carried out underground pressure management by filling well (6) filling dead zone after finishing, for the back production in next stage casing provides condition.
The present invention is that the embodiment that mentions with reference to the accompanying drawings is illustrated, and this is one of them embodiment, and those skilled in the art can obtain to inspire from embodiment, is out of shape to obtain other embodiment.Therefore, protection scope of the present invention should be determined according to the protection domain of claim.
Claims (5)
1. sublevel shrinkage caving stage open stope afterwards filling mining method is characterized in that: back production utilizes broken ore to support country rock in earlier stage, and press on back production later-stage utilization casting resin bashing control ground, to reach safe and efficient mining.
2. sublevel shrinkage caving stage open stope afterwards filling mining method according to claim 1, it is characterized in that: nugget is back production in two steps, after a step, mining blocks back production filling was finished, two step of back production mining blocks.
3. sublevel shrinkage caving stage open stope afterwards filling mining method according to claim 1, it is characterized in that: nugget vertically is divided into plurality of segments, arrange the segmentation tunnel along orebody trend at the ore body lower wall, arrive and coil from the vertical orebody trend in the segmentation tunnel driving rock drilling ore removal route that keeps at a certain distance away, as the main tunnel of back production.
4. sublevel shrinkage caving stage open stope afterwards filling mining method according to claim 1, it is characterized in that: each segmentation explosion back production from top to bottom, explosion in rock drilling ore removal route from coil and advance to lower wall, emit about 30% of each quick-fried ore that falls by the rock drilling route, all the other are left to, and the stage casing explosion is intact emits from the stope bottom, and the bottom ore drawing upwards coils from lower wall and carries out successively.
5. sublevel shrinkage caving stage open stope afterwards filling mining method according to claim 1 is characterized in that: after ore is all emitted, use the casting resin bashing, press on control ground.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010217733 CN101881169A (en) | 2010-06-25 | 2010-06-25 | Sublevel shrinkage caving stage open stope afterwards filling mining method |
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| CN 201010217733 CN101881169A (en) | 2010-06-25 | 2010-06-25 | Sublevel shrinkage caving stage open stope afterwards filling mining method |
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| 《有色金属(矿山部分)》 20040531 饶运章，吴红 东乡铜矿分段崩落阶段矿房嗣后充填组合采矿法试验研究 第13页第1栏第2段至第15页第2栏，以及第35页第1-2栏，图1 1-5 第56卷, 第3期 2 * |
| 《江西有色金属》 20000930 郭金峰 分段空场嗣后充填采矿方法的试验研究 8-10 1-5 第14卷, 第3期 2 * |
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