DOI: 10.11799/ce201611060
Discussion on safe mining scheme selection for upper working face under the upper limit of loose aquifer
FU Xiang
HU Rong-jie
Abstract：In order to ensure the production safety of Qidong coal mine, and prevent water hazards in the fourth aquifer at the bottom of Cenozoic loose layer, the paper studied loose layer aquifer water features, engineering geological characteristics of weathered bedrock, water barrier properties and mining overburden failure law, etc. Through long-term exploration, summary and practice, the key technical measures were proposed, including roof advance pre-splitting blasting, online monitoring-forecasting-warning for mining pressure and hydrology, working resistance enhancement of fully mechanized support, reasonable control of working face advancement and enhancement of working face drainage capacity, which turned the passive control to active control, realized safe production mining near limit working face, and provided guidance and basis for similar working face.
Keywords：the fourth aquifer water inrushupper limit working faceroof advance pre-splitting blastingloose aquifer
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 64-66 )