山西焦煤科技
山西焦煤科技
산서초매과기
SHANXI COKING COAL SCIENCE & TECHNOLOGY
2013年
8期
32-35
,共4页
矩形巷道%受力状态%变形情况%数值模拟%支护措施
矩形巷道%受力狀態%變形情況%數值模擬%支護措施
구형항도%수력상태%변형정황%수치모의%지호조시
Rectangular roadway%Stress state%Deformation%Numerical simulation%Supporting measures
回采巷道采用矩形断面,具有掘进量小,断面利用率高的特点,被大多数煤矿采用,但也存在严重应力集中的问题,针对矩形巷道的这一特征,通过数值模拟的方法,对巷道围岩的受力状态和变形情况进行分析,并提出了合理的支护方案。
迴採巷道採用矩形斷麵,具有掘進量小,斷麵利用率高的特點,被大多數煤礦採用,但也存在嚴重應力集中的問題,針對矩形巷道的這一特徵,通過數值模擬的方法,對巷道圍巖的受力狀態和變形情況進行分析,併提齣瞭閤理的支護方案。
회채항도채용구형단면,구유굴진량소,단면이용솔고적특점,피대다수매광채용,단야존재엄중응력집중적문제,침대구형항도적저일특정,통과수치모의적방법,대항도위암적수력상태화변형정황진행분석,병제출료합리적지호방안。
Mining roadway uses rectangular cross section,has the characteristics of small amount of tunneling and high utilization rate of cross section,the rectangular roadway is chosen by most of coal mines.However,it also has the disadvantage of high stress concentration.On the basis of the characteristics,analyze the surrounding rock stress and deformation through the numerical simulation method,and puts forward the reasonable supporting scheme.