Two-step stoping and stope filling system and filling method of thick and large ore body in vertical direction

Abstract

The invention discloses a two-step stoping and stope filling system and filling method of a thick and large ore body in the vertical direction., Filling traverse drifts are arranged in each orebody and filling body for being used for communicating hanging wall filling roadways and heading wall transportation roadways; all the filling traverse drifts communicate with a goaf through a plurality of filling connecting channels, filling pipelines are laid in the hanging wall filling roadways, the filling traverse drifts and the filling connecting channels, wherein the filling pipelines communicatein sequence, the filling pipelines in the filling traverse drifts communicate with the filling pipelines in the hanging wall filling roadways through opening valves, the filling pipelines in the filling connecting channels communicate with the goaf, the filling connecting channels of the ore body are internally provided with one-step stope filling retaining walls, and a two-step stope filling retaining wall is arranged in the filling traverse drift at the junction of the filling body and an ore-rock boundary. According to the two-step stoping and stope filling system and filling method of thethick and large ore body in the vertical direction, multi-point discharging of slurry in a narrow, tall and large stope can be realized, and the problems of poor slope piling advection forming, serious segregation, difficult discharging of accumulated water, poor roof contact effect and low filling body quality of the slurry in the stope can be solved.

Description

technical field [0001] The invention belongs to the field of mines, and in particular relates to a filling system and a filling method for thick and large ore bodies along the vertical direction in two-step stope mining. Background technique [0002] Mineral resources are the material basis for human survival and an important guarantee for national security and economic development. According to statistics, more than 95% of my country's energy, more than 80% of industrial raw materials and more than 70% of agricultural production materials are all obtained from mineral resources. Without the continuous and stable supply of mineral resources, there will be no modern economic and social development in China. However, while intensifying the development of mineral resources, mine safety and environmental protection are facing great challenges. Underground mining is the main way of mining mineral resources. The ore body forms a goaf after mining. If it is not filled in time, it...

AI Technical Summary

Problems solved by technology

Due to the high concentration of slurry, the fluidity basically meets the requirements of pipeline transportation, but the flow distance in the stope is limited, and even segregation and stratification may be caused by long-distance flow.

On the one hand, it seriously affects the strength of the filling body, on the other hand, it is easy to form accumulation slopes and a large amount of water, resulting in poor roof connection effect in the stope, and cannot provide effective support control for the roof surrounding rock

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