CAJ | 학술논문

针对潘西矿7192回风巷在原锚杆支护效果不理想的情况,通过数值模拟软件FLAC 3．3,对不同支护方式和支护参数条件下的锚杆支护情况进行模拟,并对模拟结果进行了分析。结果表明：相比原有的锚杆支护,强力锚杆支护系统能更有效地控制巷道围岩变形。通过对不同锚杆预紧力、锚杆排距、锚杆直径、锚杆长度的模拟支护效果分析,得到了优化参数预紧力为15t、排距为800mm、直径为25mm、长度为2．4m的螺纹钢筋锚杆支护方案。同时,将优化的支护方案进行现场试验,试验结果表明强力支护锚杆系统能更有效地控制巷道变形,明显改善巷道围岩支护效果。
침대반서광7192회풍항재원묘간지호효과불이상적정황,통과수치모의연건FLAC 3．3,대불동지호방식화지호삼수조건하적묘간지호정황진행모의,병대모의결과진행료분석。결과표명：상비원유적묘간지호,강력묘간지호계통능경유효지공제항도위암변형。통과대불동묘간예긴력、묘간배거、묘간직경、묘간장도적모의지호효과분석,득도료우화삼수예긴력위15t、배거위800mm、직경위25mm、장도위2．4m적라문강근묘간지호방안。동시,장우화적지호방안진행현장시험,시험결과표명강력지호묘간계통능경유효지공제항도변형,명현개선항도위암지호효과。
In order to improve supporting effect of 7192 air-roadway in Panxi Colliery, different anchored bolt supporting manners and parameters were numerically simulated with FLAC3. 3. Results showed that powerful anchored-bolt supporting system could effectively control deformation of surrounding rock, compared with primary anchored-bolt supporting. Optimized parameters including 15t pre-ten-sion force, 800mm row spacing, 25mm diameter and 2. 4m length were obtained by analyzing supporting effect of different pre-tension forces, row spacings, diameters and lengths of anchored-bolt. On-the-spot test of optimized supporting projection showed that powerful anchored-bolt supporting system distinctly improved supporting effect.