Large-diameter high-neck funnel bottom structure, construction method and stoping method
A technology with a bottom structure and a large diameter, which is applied in earth square drilling, ground mining, mining equipment, etc., which can solve the problems of unguaranteed bottom structure operation safety and low mining efficiency, so as to improve the mining efficiency and reduce the engineering quantity , The effect of ensuring safety
Pending Publication Date: 2022-02-25
铜陵有色金属集团股份有限公司 +2
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is that the safety of the bottom structure operation cannot be guaranteed and the ore extraction efficiency is low when mining the isolated ore pillar. Therefore, a bottom structure of a large-diameter high-neck funnel, a construction method and a mining method are provided.
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[0020] The technical solutions in the present invention are clearly and completely described below in conjunction with the embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments without creative efforts by those skilled in the art fall within the protection scope of the present invention.
[0021] see Figure 1~Figure 6 , the method for mining the bottom structure of a large-diameter high-neck funnel suitable for isolating ore pillars according to the present invention includes the following steps: (1) panel arrangement: the panel is arranged along the ore body, and the length of the panel is the level of the ore body thickness, the panel width is 100m, and 18m isolation ore pillars are set between the panels. The stope includes the stope mine wall 4, the stope filling body 5, the ore body floor line 6, and the stope partition w...
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The invention discloses a large-diameter high-neck funnel bottom structure, a construction method and a stoping method. The large-diameter high-neck funnel bottom structure comprises a high funnel well and a large-diameter funnel horn mouth, wherein the section diameter of the high funnel well is designed and determined according to the maximum block degree, the number of bottom funnels and the specific position during mining, the height of the high funnel well is 8-18 m, the diameter of the horn mouth of the large-diameter funnel is 17-19m, and an angle of the slope surface is 45-55 degrees. The structure is advantaged in that (1) the height of the bottom structure is increased along with heightening of the neck of the funnel and increasing of the diameter of the horn mouth so that safety of ore removal operation of the bottom structure is guaranteed; (2) the number of funnels at the bottom of the stope is greatly reduced, the bottom structure construction is simplified, the work amount is reduced, the residual ore amount between the funnels is reduced, and the ore recovery rate is high; and (3) a bottom structure of the large-diameter funnel can store more ores, the ore drawing capacity is high, and ore drawing efficiency is improved.
Description
technical field [0001] The invention relates to the technical field of mining engineering, in particular to a large-diameter high-neck funnel bottom structure, a construction method for the large-diameter high-neck funnel bottom structure, and a mining method for the large-diameter high-neck funnel bottom structure suitable for isolating ore pillars. Background technique [0002] Mineral resources are an important material basis for economic and social development. China's new industrialization, urbanization, informatization, and agricultural modernization drive have a huge rigid demand for mineral resources. Strengthening the conservation, efficient, and green development and utilization of mineral resources is a new strategy for current mining development. Demand, the traditional good and easy resources are exhausted, and the development of unconventional, complex and difficult resources is urgent. China Invention Patent Application No. CN201811350417.5 discloses a three-s...
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IPC IPC(8): E21C41/22E21F15/00
CPCE21C41/22E21F15/00
Inventor 董世华姚道春过江苏卫宏孟稳权汪令辉古绪球谢学斌郑攻关潘敏谢经鹏覃星朗
Owner 铜陵有色金属集团股份有限公司