煤矿开采
煤礦開採
매광개채
Coal Mining Technology
2015年
5期
101-105
,共5页
张向阳%沈俊%徐景茂%孔福利
張嚮暘%瀋俊%徐景茂%孔福利
장향양%침준%서경무%공복리
锚固方式%洞室%根部加强%普通长密锚杆%模型试验
錨固方式%洞室%根部加彊%普通長密錨桿%模型試驗
묘고방식%동실%근부가강%보통장밀묘간%모형시험
anchorage style%cavern%root reinforcement%ordinary length and thickness anchored bolt%model test
锚杆根部加强和普通长密锚杆加固洞室抗爆性能对比试验结果表明,在爆炸条件下,锚杆根部加强加固洞室拱顶与底板发生相背位移,普通长密锚杆加固洞室拱顶与底板发生相向位移,尽管锚杆根部加强洞室的位移峰值较大,由于其塑性变形能力得到提高,塑性变形消耗的爆炸能量增大,其最终破坏程度较轻。在爆炸荷载作用下,锚杆根部加强加固洞室抗爆效果要优于普通长密锚杆加固洞室的抗爆效果。
錨桿根部加彊和普通長密錨桿加固洞室抗爆性能對比試驗結果錶明,在爆炸條件下,錨桿根部加彊加固洞室拱頂與底闆髮生相揹位移,普通長密錨桿加固洞室拱頂與底闆髮生相嚮位移,儘管錨桿根部加彊洞室的位移峰值較大,由于其塑性變形能力得到提高,塑性變形消耗的爆炸能量增大,其最終破壞程度較輕。在爆炸荷載作用下,錨桿根部加彊加固洞室抗爆效果要優于普通長密錨桿加固洞室的抗爆效果。
묘간근부가강화보통장밀묘간가고동실항폭성능대비시험결과표명,재폭작조건하,묘간근부가강가고동실공정여저판발생상배위이,보통장밀묘간가고동실공정여저판발생상향위이,진관묘간근부가강동실적위이봉치교대,유우기소성변형능력득도제고,소성변형소모적폭작능량증대,기최종파배정도교경。재폭작하재작용하,묘간근부가강가고동실항폭효과요우우보통장밀묘간가고동실적항폭효과。
Anti-knock quality comparison test of root-reinforcement anchored bolt and ordinary anchored bolts showed that under explo-sion condition, reverse displacement occurred between arch roof and floor in root-reinforcement anchored bolt, but opponent displace-ment occurred in ordinary anchored bolt. Although displacement peak value of root-reinforcement anchored bolt was larger than that of ordinary bolt, its plastic deformation ability was promoted and explosion energy dissipated for plastic deformation increased, so final failure degree was smaller. Under explosion load, anti-knock effect of root-reinforcement anchored bolt was better than that of ordinary anchored bolt.