Medium-length hole ore breaking synergistic anchor cable support subsequent filling mining method of combined reconstructed structural body
A technology of filling mining method and anchor cable support, which is applied in the field of medium and deep hole falling ore cooperation with anchor cable support under the combined reconstruction structure and subsequent filling mining, and in the field of inclined medium-thick ore body, which can solve the problem of high mining cost and poor production safety , economic loss and other issues, to achieve the effect of reducing the amount of mining work, reducing mining costs, and large-scale recovery
Active Publication Date: 2013-12-11
CENT SOUTH UNIV
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[0002] For high-grade sloping medium-thick ore bodies whose roof, floor, and upper and lower wall rocks are broken and unstable, the upward or downward layered filling method is generally used for mining, and support measures such as bolts and anchor nets are required for layer-by-layer mining. The process is complicated, and the staff generally work under the exposed surface or under the collapsed rock f
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[0018] The present invention will be further described below in conjunction with the accompanying drawings.
[0019] see figure 1 , figure 2 , image 3 and Figure 4 , the ore body is divided into the middle section, and when the middle section is divided into stopes, the upper and lower middle section stopes are staggered to carry out downward mining. Drill and cut the raised well 6 in the footwall of the ore body, and use the cut raised well 6 as the blasting free surface to form a cutting groove, which is used as the blasting free surface for the subsequent large-scale mining work. The uphill approach road 12 is excavated in the surrounding rock of the ore body hanging wall, and is connected with the horizontal transportation roadway 1 to form a mining area transportation system. Excavate the roof-cutting route 13 in the middle section of the roof to reach the ore body, build the artificial false roof 2 after the roof-cutting work is completed, and reserve a filling pa...
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The invention discloses a medium-length hole ore breaking synergistic anchor cable support subsequent filling mining method of a combined reconstructed structural body. The method adopts downward type sublevel stoping, and comprises the following steps: firstly, excavating a top cut heading way in a hanging wall surrounding rock; building an artificial roof (reserved with a fill raise) along the ore body striking direction by adopting smooth blasting after top cut is completed; excavating a multifunctional roadway integrating the functions of rock drilling, supporting and ore removal along the ore body striking direction in the hanging wall surrounding rock; and arranging fan-shaped blast holes by medium-length holes, and arranging a surrounding rock grouting reinforcement and anchor cable support hanging wall project by utilizing the medium-length holes at the same time to integrate surrounding rock grouting reinforcement, ore breaking by blasting and anchor cable support. By adopting retreat type stoping and ore removal by a scraper, the method realizes safe, efficient and large-scale stoping of ore bodies. The mining method is suitable for mining the inclined ore bodies with surrounding rocks which are evenly and stably distributed, and has the characteristics of being small in stope preparation work amount, safe and reliable to operate, high in stoping efficiency, etc.
Description
technical field [0001] The present invention relates to a mining method for underground metal mines, in particular to a method for mining in combination with middle and deep holes under a combined restructured structure to cooperate with anchor cable support and then filling. Steady, inclined medium-thick ore body with high ore grade. Background technique [0002] For high-grade sloping medium-thick ore bodies whose roof, floor, and upper and lower wall rocks are broken and unstable, the upward or downward layered filling method is generally used for mining, and support measures such as bolts and anchor nets are required for layer-by-layer mining. The process is complicated, and the staff generally operate under the exposed surface or under the collapsed rock formation, and its production safety is relatively poor. The outstanding problems are that the mining and cutting works are large and the mining cost is high; the efficiency of layered mining is low, and it is difficul...
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Inventor 邓红卫周科平李杰林宾峰张健田维刚
Owner CENT SOUTH UNIV
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