阅读说明：本技术 一种垂直矿体走向连续回采的水平胶结充填分段采矿法 (Horizontal cemented filling sublevel mining method for vertical ore body trend continuous stoping ) 是由 黄小红 王洋 曾永志 姜群 贺巍 李拓 曾鹏 曹伟 肖海兵 刘强 刘杰峰 于 2020-08-11 设计创作，主要内容包括：一种垂直矿体走向连续回采的水平胶结充填分段采矿法,包括以下步骤：沿矿体走向每隔50-60m划分盘区；在运输平巷内开掘出矿漏斗和人行通路至一分段水平；施工电耙硐室,并继续沿矿体底板施工出矿巷道与人行通路至上部中段采场边界线,出矿巷道与人行通路平行布置；施工一条联络巷道贯穿出矿巷道与人行通路；在盘区的另一端同步骤施工一条人行通路至上中段采场边界线,施工上回风巷；施工拉底巷道；在拉底巷道内布置钻孔,进一步探明矿体情况；回采施工达到设计高度后出矿。本发明采用浅孔落矿,安全性能高,采矿效率高,工人作业条件改善,劳动强度降低；回采工艺简单,操作性强。(A horizontal cemented filling sublevel mining method for vertical ore body trend continuous stoping comprises the following steps: dividing the panel regions every 50-60m along the direction of the ore body; excavating an ore funnel and a pedestrian path in a transport roadway to be horizontal in a subsection manner; constructing a scraper chamber, and continuously constructing a mine removal roadway and a pedestrian passageway to an upper middle section stope boundary line along an ore body bottom plate, wherein the mine removal roadway and the pedestrian passageway are arranged in parallel; constructing an interconnection roadway to penetrate through the ore removal roadway and the pedestrian path; constructing a pedestrian path to the boundary line of the upper middle stope and constructing an upper return airway at the other end of the panel in a synchronous step; constructing a pull-bottom roadway; arranging drill holes in the pull-bottom roadway to further find out the condition of an ore body; and (5) ore removal after the stoping construction reaches the design height. The invention adopts shallow hole ore breaking, has high safety performance and high mining efficiency, improves the working conditions of workers and reduces the labor intensity; the extraction process is simple and has strong operability.)

1. The utility model provides a horizontal consolidated fill sublevel mining method of vertical ore body trend continuous stoping which characterized in that: the method comprises the following steps:

s1, dividing the plate areas along the trend of the ore body;

s2, excavating an ore funnel and a pedestrian path in the transportation roadway to a sectional level;

s3, constructing a scraper chamber, and continuously constructing a mine removal roadway and a pedestrian passageway along the bottom plate of the ore body to the boundary line of the upper middle stope, wherein the mine removal roadway and the pedestrian passageway are arranged in parallel; constructing a connecting roadway penetrating through the ore removal roadway and the pedestrian passageway;

s4, constructing a pedestrian path to the boundary line of the upper middle stope and constructing an upper return airway at the other end of the panel in a synchronous step;

s5, constructing a bottom-pulling roadway: namely, a mining pilot raise, and a pedestrian passage which penetrates through the adjacent panel areas from one end of the ore removal roadway to the other end;

s6, arranging drill holes in the bottom-pulling roadway to further ascertain the condition of the ore body;

s7, performing mining operation of a sectional mining field, performing bottom drawing operation along a mining accurate raise, arranging blast holes along the ore body in a inclined manner, performing shallow hole blasting, performing top clipping operation after bottom drawing is completed, performing top trimming operation after top clipping operation is completed, and completing all mining operation after top trimming is completed to the design height;

s8, a large amount of ore is removed after the stoping construction reaches the design height;

s9, building and filling the sealing wall after the stope is mined out;

s10, stope filling: the goaf filling adopts cemented filling, the reserved space of a layered stope is used as an upper layered operation space, and the goaf filling is connected with the top if the goaf is not layered;

s11, continuous recovery operation: carrying out layered stoping on multiple layers one by one, and transferring to a subsequent stope for continuous stoping after the steps are completed; and if no layering exists, directly switching to a subsequent stope for continuous stoping after the steps are completed until the stoping of the panel area is finished.

2. The horizontal cemented-filling sublevel mining method of vertical ore body strike continuous stoping according to claim 1, characterized in that: in step S1, extents are divided every 50-60 m.

3. The panel continuous stoping cemented filling mining method according to claim 1 or 2, characterized in that: in step S2, a draw hopper is arranged in parallel with the walkway.

4. The horizontal cemented-filling sublevel mining method of vertical ore body strike continuous stoping according to claim 1 or 2, characterized in that: in step S3, the ore removal roadway is 4-6 m away from the pedestrian passageway; the connecting roadways are provided with a plurality of connecting roadways, and the distance between two adjacent connecting roadways is 6-8 m.

5. The method of claim 3, wherein the method comprises the steps of: in step S3, the ore removal roadway is 4-6 m away from the pedestrian passageway; the connecting roadways are provided with a plurality of connecting roadways, and the distance between two adjacent connecting roadways is 6-8 m.

6. The method of horizontal cemented filling sublevel mining with vertical ore body strike continuous stoping according to any one of claims 1 to 4, characterized by: in step S3, the communication roadway is aligned with the scraper chamber of the stope.

7. The method of horizontal cemented filling sublevel mining with vertical ore body strike continuous stoping according to any one of claims 1 to 6, characterized by: in step S7, in the bottoming operation, the primary bottoming height is 2.5-3.0 m; clipping and topping, wherein the height of each clipping and topping is 2.4-2.6m, and after clipping and topping for many times, when the recovery height is less than or equal to 1.5m, topping is carried out.

8. The method of horizontal cemented filling sublevel mining with vertical ore body strike continuous stoping according to any one of claims 1 to 7, characterized by: the specifications of the scraper chamber and the communication roadway are 2.2m multiplied by 2.0 m.

9. The method of horizontal cemented filling sublevel mining with vertical ore body strike continuous stoping according to any one of claims 1 to 8, characterized by: the standard of the mining standard raise is 2.0m multiplied by 2.0 m.

Technical Field

The invention relates to a cemented filling sublevel mining method, in particular to a horizontal cemented filling sublevel mining method for continuous mining in a vertical ore body trend.

Background

The mining method commonly adopted for mining the steeply inclined ore body is a cemented filling mining method and an upward horizontal layered filling mining method of two-step stoping. The two methods have wide application range in underground mines, are particularly applied to tin mines more and adopt shallow hole ore falling. During mining, there are disadvantages, among which the cemented filling method: the construction difficulty is high, the upper, middle and lower passages are easy to block, and the treatment difficulty of blocking a funnel by a large ore block is high during ore removal; upward layering method: because the ore body is thick, horizontal width is big, and the layering subdivision is not convenient for technical design and also does not benefit to the construction, and it is big to adopt the work load. The dilution rate, the loss rate and the ten thousand ton mining standard are larger.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects in the prior art and provide a horizontal cemented filling sublevel mining method for continuous stoping of vertical ore body trends, which has good safety performance and high mining efficiency, can improve the stope operation conditions and reduce the labor intensity of workers.

The technical scheme adopted by the invention for solving the technical problems is as follows: a horizontal cemented filling sublevel mining method for vertical ore body trend continuous stoping comprises the following steps:

s1, dividing the plate areas along the trend of the ore body;

s2, excavating an ore funnel and a pedestrian path in the transportation roadway to a sectional level;

s3, constructing a scraper chamber, and continuously constructing a mine removal roadway and a pedestrian passageway along the bottom plate of the ore body to the boundary line of the upper middle stope, wherein the mine removal roadway and the pedestrian passageway are arranged in parallel; constructing a connecting roadway penetrating through the ore removal roadway and the pedestrian passageway;

s4, constructing a pedestrian path to the boundary line of the upper middle stope and constructing an upper return airway at the other end of the panel in a synchronous step;

s5, constructing a bottom-pulling roadway: namely, a mining pilot raise, and a pedestrian passage which penetrates through the adjacent panel areas from one end of the ore removal roadway to the other end;

s6, arranging drill holes in the bottom-pulling roadway to further ascertain the condition of the ore body;

s7, performing mining operation of a sectional mining field, performing bottom drawing operation along a mining accurate raise, arranging blast holes along the ore body in a inclined manner, performing shallow hole blasting, performing top clipping operation after bottom drawing is completed, performing top trimming operation after top clipping operation is completed, and completing all mining operation after top trimming is completed to the design height;

s8, ore removal is carried out after the stoping construction reaches the design height;

s9, building and filling the sealing wall after the stope is mined out;

s10, stope filling: adopting cemented filling for goaf filling; however, in order to reduce the filling operation cost as much as possible, tailing filling can be performed below the horizontal plane of a subsequent stope, and the cemented filling amount is reduced on the premise of not influencing safety. The layered stope can reserve space as a layered operation space, and the roof is filled when the stope is not layered;

s11, continuous recovery operation: carrying out layered stoping on multiple layers one by one, and transferring to a subsequent stope for continuous stoping after the steps are completed; and if no layering exists, directly switching to a subsequent stope for continuous stoping after the steps are completed until the stoping of the panel area is finished.

Further, in step S1, extents are divided every 50-60 m.

Further, in step S2, a draw hopper is arranged in parallel with the walkway.

Further, in step S3, the ore removal roadway is separated from the pedestrian passageway by 4-6 m; the connecting roadways are provided with a plurality of connecting roadways, and the distance between two adjacent connecting roadways is 6-8 m. .

Further, in step S3, the communication roadway is aligned with the scraper chamber of the stope.

Further, in step S7, in the bottoming operation, the primary bottoming height is 2.5-3.0 m; clipping and topping, wherein the height of each time is 2.4-2.6m (preferably 2.5 m), and after clipping and topping for many times, when the extraction height is less than or equal to 1.5m, then topping.

Furthermore, the specifications of the scraper chamber and the communication roadway are 2.2m multiplied by 2.0 m.

Further, the standard of the mining standard raise is 2.0m multiplied by 2.0 m.

The invention adopts shallow hole ore breaking, can realize three-cycle rock drilling and blasting in two days, has high safety performance, and improves the mining efficiency which can reach 60-80 tons/shift; meanwhile, the working conditions of workers are improved, and the labor intensity is reduced; the extraction process is simple and strong in operability; after the ore is mined out, the earth surface can be protected by controlling the earth pressure by adopting cemented filling; the mine economic and technical indexes are optimized, the production efficiency is high, the cost is low, and the economic benefit is greatly improved.

Drawings

FIG. 1 is a schematic diagram of the arrangement of a mining pedestrian path, a transportation roadway, an upper return air port, a mining quasi-raise, a scraper chamber and a ore removal funnel of the continuous-extraction horizontal cemented filling sublevel mining method;

FIG. 2 is a view taken along line A-A of FIG. 1;

fig. 3 is a schematic diagram of layered and sectional stoping of a thick ore body.

In the figure: 1. the system comprises a pedestrian passageway, 2, a transportation roadway, 3, an upper air return port, 4, a mining pilot raise, 5, a scraper chamber, 6 and a mine removal funnel.

Detailed Description

The invention is described in further detail below with reference to the figures and the embodiments.

Referring to fig. 1-2, the present embodiment includes the steps of:

s1, dividing the plate areas every 50m along the trend of the ore body;

s2, excavating an ore funnel 3 and a pedestrian path 1 in the transportation roadway 2 to be horizontal in a sectional manner;

s3, constructing a scraper chamber 5, and continuously constructing a mining funnel and a pedestrian passageway 1 along the bottom plate of the ore body to the boundary line of the upper-section stope, wherein the mining funnel and the pedestrian passageway 1 are arranged in parallel and are separated by 6 m; and constructing an interconnecting roadway at intervals of 8m to penetrate through the ore removal funnel and the pedestrian passageway 1. The specification of the scraper chamber 5 is 2.2m multiplied by 2.0 m;

s4, constructing a pedestrian path 1 to the boundary line of the upper middle stope and an upper return airway 3 at the other end of the panel in the same step;

s5, constructing a bottom-pulling roadway: namely a mining standard raise 4 with the specification of 2.0m multiplied by 2.0m, and a pedestrian passageway 1 which runs through the adjacent panel area from one end of the ore removal roadway to the other end;

s6, arranging drill holes in the bottom-pulling roadway to further ascertain the condition of the ore body;

s7, performing mining operation of a sectional stope, performing bottom drawing operation along a mining pilot raise 4, arranging blast holes along the ore body, performing shallow hole blasting, performing top clipping operation after one-time bottom drawing height of 2.5m, performing top clipping operation after the bottom drawing operation is finished, wherein the height of each time is about 2.5m, performing top clipping operation when the mining height is less than or equal to 1.5m after multiple times of top clipping, and completing all the mining operation after the top clipping operation is finished to the design height;

s8, a large amount of ore is removed after the stoping construction reaches the design height;

s9, building and filling the sealing wall after the stope is mined out;

s10, stope filling: adopting cemented filling for goaf filling; in order to reduce the filling operation cost as much as possible, tailing filling is carried out below the horizontal plane of a subsequent stope, the cemented filling amount is reduced on the premise of not influencing safety, a reserved space of a layered stope is used as a layered operation space, and filling is carried out in a roof-contacted state when the stope is not layered;

s11, as shown in figure 3, when mining operation is carried out on thick and large ore bodies, layering processing is carried out on the ore bodies, layering stoping is carried out on multiple layers one by one, and continuous stoping is carried out on a subsequent stope after the steps are completed; and if no layering exists, directly switching to a subsequent stope for continuous stoping after the steps are completed until the stoping of the panel area is finished.

Various modifications and variations of the present invention may be made by those skilled in the art, and they are also within the scope of the present invention provided they are within the scope of the claims of the present invention and their equivalents.

What is not described in detail in the specification is prior art that is well known to those skilled in the art.