Control method for activities of overburden rock in stope under gully topography based on remote sensing monitoring

Abstract

The invention provides a control method for the activities of overburden rock in a stope under a gully topography based on remote sensing monitoring. The control method comprises the following steps: selecting a mine used for mining coal seams shallowly buried under a gully topography and typical in northwest mining areas in China and learning about overburden rock occurrence states and concrete mining parameters corresponding to different working surfaces of the mine; acquiring a plurality of time-phase images of the earth surfaces of gulleys by using an unmanned aerial vehicle platform and constructing gulley landforms by using a SFM three-dimensional reconstruction method; extracting differences of the gulley landforms constructed at a plurality of time phases by using a time series analysis method, acquiring the dynamic deformation information of a mining slope and extracting related landform characteristic parameters of the gulleys by using a digital landform analysis method; and separately controlling the activities of overburden rock in the stope in different ways according to geological conditions for mining at different working faces based on the dynamic deformation information of the mining slope, the landform characteristic parameters of the gulleys, the overburden rock occurrence states and the concrete mining parameters. The method provided by the invention can effectively control the activities of overburden rock in mining of shallowly buried coal seams under a gully topography and guarantees safe and high-efficiency mining at underground working faces.

Description

technical field [0001] The invention belongs to the technical field of underground mining of coal resources, and relates to a method for controlling overburden rock activity in a stope, in particular to a method for controlling overburden rock activity in a stope under gully terrain based on remote sensing monitoring. Background technique [0002] Coal is my country's basic energy and important raw material, accounting for more than 90% of my country's fossil energy resources, and is the most stable, economical, and self-guaranteed energy source. The proportion of coal in primary energy consumption will gradually decrease, but for a long period of time, the status of coal as the main energy source will not change. At present, my country's coal industry has entered a development stage of "four phases coexisting" (a period of slowing demand growth, a period of digesting excess capacity, a period of strengthening environmental constraints, and a period of structural adjustment)...

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Problems solved by technology

Existing related research is often on the roof control technology under individual specific mining geological conditions, and its field application is limited, and it is not suitable for various abnormal mine pressure phenomena

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