Upward cut-and-fill mining method for in-vein slope ramp of gentle dip thin vein

Abstract

The invention discloses an upward cut-and-fill mining method for an in-vein slope ramp of a gentle dip thin vein. The method comprises the following steps: stoping layers of an ore body, tunneling a cross gateway from a bottom middle haulage drift to the ore body, tunneling a diagonal slope ramp along the vein to rise for certain height, and tunneling a slice drift, a reversing chamber and a sectional ore removal draw shaft forwards along the vein, wherein the reversing chamber and the sectional ore removal draw shaft are perpendicular to the slice drift; reversely tunneling the diagonal slope ramp along the vein from one side of the slice drift to rise for the certain height, and tunneling the slice drift, the reversing chamber and the sectional ore removal draw shaft along the vein; dividing a stope by using the diagonal slope ramp as the boundary, continuously propelling from one end of the vein to the other end of the vein, reaching all the layers of the ore body by virtue of the diagonal slope ramp which is tunneled in the vein, and sequentially stoping and filling from bottom to top by virtue of each layer stoping unit in the stope. The upward cut-and-fill mining method for the in-vein slope ramp of the gentle dip thin vein is high in mechanization degree, small in out-vein stope preparation engineering amount, low in labor intensity, low in ore dilution loss, safe to operate and high in efficiency.

Description

technical field [0001] The present invention relates to a mining method, in particular to an upward layered filling mining method for trackless mining of gently inclined thin veins, especially suitable for the mechanized mining method of gently inclined thin ore bodies with moderately stable ore rocks. . Background technique [0002] Gently inclined thin veins are one of the main forms of non-ferrous metal ore deposits in my country, especially in gold, silver, molybdenum, tin, tungsten, antimony and other deposits occupy a large proportion. Generally, the gently inclined thin veins are mined by the ordinary open field method or the vertical strip room and pillar method, that is, traditional equipment such as air-leg rock drills and electric rakes are used for drilling and mining. , High loss rate of ore dilution, low production efficiency, high labor intensity, and difficulty in handling ore after blasting, etc., which lead to unprecedented difficulties for mines mined by ...

AI Technical Summary

Problems solved by technology

However, the trackless mining quasi-system arranged outside the vein will greatly increase the amount of waste rock mining, resulting in a serious decline in various technical and economic indicators of mining with gently inclined thin veins, and a decline in the economic benefits of mining. After consulting relevant domestic and foreign literature and patents, no In the mining of ore veins, the use of internal slope slope mining quasi-system literature data, in view of the upward horizontal layered filling mining method in gently inclined thin veins has the characteristics of small loss and dilution rate, great flexibility, strong adaptability, etc., by adopting reasonable The advanced trackless mining standard system, combined with the superiority of the upward layered filling mining method, can solve the problem of safe and efficient mining of gently inclined thin ore bodies

Therefore, in view of the problems of large mining volume, high production cost and low recovery efficiency in trackless mining of gently inclined thin veins, it is the best choice to design the mining method of in-vein ramps. The quasi-system, whether it is the return type or the continuous pseudo-tilt method, cannot ensure that the trackless equipment enters the stope working face smoothly or meets the requirements of the mining operation

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