A kind of filling mining method of waste rock cemented column with gently inclined thin ore body
A filling mining method and thin ore body technology, which is applied in the direction of filling, mining equipment, earth square drilling, etc., can solve the problems of high ore loss rate, lagging filling work, high mining cost, etc., achieve low ore loss rate and reduce filling The effect of high cost and ore recovery rate
Active Publication Date: 2018-06-22
CENT SOUTH UNIV
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Problems solved by technology
[0002] The gently inclined thin ore body has always been regarded as a complex and difficult-to-mine ore body. In the traditional technology, mining methods such as the full-scale mining method and the room-and-pillar method are often used for mining, which has the disadvantages of high ore loss rate and poor safety.
Especially when the surrounding rock and the roof are not stable, it is easy to cause the roof to fall and collapse in the goaf, causing ground pressure disasters
If the filling mining method is adopted, although it can effectively solve technical problems such as goaf and ground pressure management, it will also bring disadvantages such as increasing the filling operation process and high mining costs, especially when the mine lacks sufficient filling materials. It is easy to cause the filling work to lag or stop, so it is impossible to fill the goaf in time, which not only affects the normal production of the mine, but also leaves a major safety hazard for the safe production of the mine
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[0019] The present invention will be further described below in conjunction with accompanying drawing.
[0020] see figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 Firstly, the mining area is divided along the ore body trend, and each mining area is connected by the mining area ramp 6. Each mining area is divided into upper and lower sections on the vertical height, and continuous ore pillars 1 are left between the sections. The width is 20m.
[0021] Through the transportation roadway 2 along the vein, excavate a 3×3m mining slope 3 in the middle of the mining area, and through the mining slope 3, excavate a rock-drilling exit road 4 at the bottom of each stope near the footwall, and drill The ore-out approach 4 runs through the entire stope, and at the end of the stope, a cutting patio 8 is excavated from the floor to the roof, and a cutting groove 7 is formed with the cutting patio 8 as the free surface.
[0022] Through the mining slope 3, a 3×3m filling a...
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The invention discloses a waste rock cementing pillar filling mining method for gently-inclined thin ore bodies. A ramp is used as an accurate mining sidewalk, a drill jambo and scraper trackless equipment are used, ore caving is performed by drilling fan-shaped medium-length holes, backward type stoping is performed, after stoping, artificial pillars are constructed in a waste rock cementing filling manner to support a goaf, and the exposure area of the goaf is within the largest allowed exposure area range. The distance and the number of the artificial pillars are adjusted according to stability of surrounding rock and top and bottom plates of the goaf, and few filling materials are required, so that safe and efficient stoping of the ore bodies is realized under the condition that the filling materials are insufficient. The method is particularly applicable to stoping of the gently-inclined thin ore bodies which are 3-5 m thick under the condition that underground metal ore filling materials are insufficient, and has the characteristics that the process is simple, operation is safe, the production efficiency is high, few filling materials are required, the ore loss rate is low and the mining cost is low.
Description
technical field [0001] The invention relates to a filling mining method for underground metal mines, in particular to a filling mining method for gently inclined thin ore bodies, which is suitable for underground mines where filling materials are scarce and the roof surrounding rock is unstable and the thickness is 3-5m. Mining of thin ore bodies. Background technique [0002] Gently inclined thin ore bodies have always been regarded as a complex and difficult-to-mine ore body. Traditional mining methods such as full-scale mining and room-and-pillar methods are often used for mining, which has the disadvantages of high ore loss rate and poor safety. Especially when the surrounding rock and the roof are not stable, it is easy to cause the goaf roof to fall and collapse, causing ground pressure disasters. If the filling mining method is adopted, although it can effectively solve technical problems such as goaf and ground pressure management, it will also bring disadvantages s...
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IPC IPC(8): E21F15/06
CPCE21F15/06
Inventor 李杰林周科平邓红卫李志宏郭洪泉高峰
Owner CENT SOUTH UNIV