回采巷道围岩三维受力特征及其维护的研究-工程力学专业论文.docxVIP

～奎堡毽三盔兰堡圭堡塞塞堂焦望壅—— ～奎堡毽三盔兰堡圭堡塞塞堂焦望壅—— 坏稳定规律，对回采顺槽巷道支护工艺的发展有一定的实际指导意义 帮理论意义。 关键词：rtac蝴数值模拟，回采顺槽，围岩稳定性，锚杆支护， 稳定蠕变 太艨理工大学硬士研究生学位论文S’rUDY 太艨理工大学硬士研究生学位论文 S’rUDY oN THREE。D秘般N5疆oNAL DlSTRIBUTION AND CONTROLLING IN SUR靛0UND玳G ROCK oF M弧撩G RoA羚WA￥ ABSTRACT As the reformation of exploit technology and the improvement of throughput in coal nline，gate section gets bigger and bigger，which brings more difficulty in supporting．Mining心c road lies in coal seam which is subjected to mining affect during serving time iteratively．Surrounding rock of gate generally distorts severely and it is especially hard in supporting。So studying the smbfli留and relative湖鹚懈of the gate has very important signification． ．This dissertation，based on theoretical analyses and nmnerical simulations，compares elastic model to plastic model which bufit on geology of YueCheng mille in Jincheng，on different conditions，without bolt supporting and with supporting，by using FLAC’D nmnerical simulation，on the precondition considering of the tardigrade creeping of rock。We get the general breakage regulation about wall rock of mining traffic road through contrastive analysis．There is tension effect in bottom mostly,and tension in middie roof,shear in side roof。Besides，it ocC沁S shear effect in road comer,shear-tension effect in middle section of wall rock mostly．Especially,the rock within 6m distance of the working face is subjected to mining affect，which is necessary to do supporting ahead and lI芏 查壁銎三查差堡圭堑塞笙兰垡堕茎 查壁銎三查差堡圭堑塞笙兰垡堕茎 一一一——二一 warch instantly．The stress in wall rock reduces，displacement of block heightens obviously in general and distribution of distortiOil expends with time flowing．The rock of roadway produces huge deformation，including subsidence of roof bedding and bulge of bottom。We can draw the conclusion that mining traffic road without supporting carl’t meet the requirement for safe work underground． The research achievement of this dissertation explains the general yield breakage regulation about