DOI: 10.11799/ce202507017
Research and application of fine exploration technology in coal mine goaf failure area
SUN Zhenjun
SUN Wanming
LIU Gui
GUO Aiguo
SUN Lin
Abstract：In view of the unclear scope and lack of basic data on the goaf failure area caused by room-pillar mining in Guojiawan Coal Mine,a method combining geophysical exploration,drilling,and three-dimensional spatial scanning technology was used for detailed exploration of the goaf area,roof status,water accumulation,internal tunnels and coal pillar size.First,the goaf area and different partitions were delimited based on the ground transient electromagnetic physical properties interpretation and drilling verification of abnormal areas.Then,the three-dimensional spatial scanning technology was used for detailed scanning and observation of the internal space of the water and water-free goaf areas,and high-precision technical data such as tunnel width,goaf height,coal pillar size within a certain range around the bottom of the borehole were obtained.The internal and external morphology of the goaf was obtained through three-dimensional modeling.The research method in could provide support for the exploration of goaf failure areas,accurate data measurement of internal space,stability assessment of goaf areas,and disaster prevention.
Keywords：goaf failure arearoom-pillar miningtransient electromagnetic methoddrilling explorationscanning
Publication Date：2025-07-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 118-126 )