In response to the collapse of the goaf in Room 5 of a deep copper mine,a detection plan for the collapse area was proposed.Geological drilling was used to detect the possibility of the collapse area,TRT geophysical exploration was used to delineate the approximate range of the collapse and its impact area,and a drilling based 3D laser scanning system was used to scan the volume of the cavity in the collapse area,ultimately delineating the collapse and its impact range in the goaf.
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