宁夏工程技术
寧夏工程技術
저하공정기술
NINGXIA ENGINGEERING TECHNOLOGY
2012年
1期
49-53
,共5页
巷道断面%锚杆支护%数值分析
巷道斷麵%錨桿支護%數值分析
항도단면%묘간지호%수치분석
cross-section shape of wall rock%bolting support%numerical simulation analysis
为了研究巷道不同断面形状和锚杆支护对巷道围岩稳定性的影响,采用ANSYS有限元计算方法进行数值模拟,通过对计算结果分析,得出半圆拱形巷道为最佳断面且煤矿巷道锚杆支护能够有效地控制围岩的变形;煤矿巷道锚杆支护对竖向位移的控制作用较大的区域集中在巷道围岩1.8 m范围以内及巷道的两个底角部;对于横向位移的控制作用较大的区域集中在巷道围岩顶板、两帮中部1.6 m范围以内及巷道的两个底角部.
為瞭研究巷道不同斷麵形狀和錨桿支護對巷道圍巖穩定性的影響,採用ANSYS有限元計算方法進行數值模擬,通過對計算結果分析,得齣半圓拱形巷道為最佳斷麵且煤礦巷道錨桿支護能夠有效地控製圍巖的變形;煤礦巷道錨桿支護對豎嚮位移的控製作用較大的區域集中在巷道圍巖1.8 m範圍以內及巷道的兩箇底角部;對于橫嚮位移的控製作用較大的區域集中在巷道圍巖頂闆、兩幫中部1.6 m範圍以內及巷道的兩箇底角部.
위료연구항도불동단면형상화묘간지호대항도위암은정성적영향,채용ANSYS유한원계산방법진행수치모의,통과대계산결과분석,득출반원공형항도위최가단면차매광항도묘간지호능구유효지공제위암적변형;매광항도묘간지호대수향위이적공제작용교대적구역집중재항도위암1.8 m범위이내급항도적량개저각부;대우횡향위이적공제작용교대적구역집중재항도위암정판、량방중부1.6 m범위이내급항도적량개저각부.
In order to investigate the influence of cross-section shape of wall rock and bolting support mechanism to stability of lane surrounding rock,numerical simulation of finite element method is used in ANSYS.The results show that the semicircle arch is optimum cross section for tunnel,and the deformation of the surrounding rock can be effectively controlled by bolting support.Biggish control action of bolting support to the vertical displacement concentrates in lane surrounding rock ranges of 1.8 meters and two base angles at coal lane.Biggish control action of bolting support to horizontal displacement concentrates on roof of lane surrounding rock,the middle of two sides ranges of 1.6 meters and two base angles at coal lane.
