Utilization of full face roadway boring machine in coal mines deeper than 1000 km and the key rock mechanics problems
Abstract：In order to solve the challenge of the deep roadway construction,through comparatively analyzing the existing roadway excavation,support methods,and TBM technology,it shows that TBM has obvious advantages,and meets the needs of the roadway construction deeper than 1 000 m;modern large-scale mine is also capable of introducing TBM;the authors intends to introduce TBM to roadway construction deeper than 1 000 km,which will be improved later on the basis of the involved key rock mechanics and machinery manufacturing problems having been solved,called Full Face Roadway Boring Machine(RBM).Due to the significantly difference of the construction environment between the deep coal mine roadway and tunnel,RBM construction will face two key issues:shield jamming and the rock fragmentation.In order to reveal RBM shield jamming mechanism,this paper points out the key rock mechanics problems,including:roadway deeper than 1 000 km surrounding rock masses squeezing deformation mechanism under RBM excavation unloading paths;squeezing deformation distribution law of the rock masses around the shield;the interaction mechanism between ground,shield and support;shield jamming criterion;control theory and method for shield jamming.
Keywords：coal mine deeper than 1 000 mfull face roadway boring machinerock mechanicsshield jammingrock fragmentation
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 2006-2013 )