损伤光面层爆破参数确定及数值分析-武汉理工大学学报.PDFVIP

28 7 武 汉 理 工 大 学 学 报 Vol. 28 No. 7 2006 7 JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY Jul . 2006 张成良, 李新平, 米 健, 王艳丽, 王 涛 ( , 430070) : 应用动力有限元AN SY S/ LSDYN A 程序, 建立岩体二维弹塑性模型, 对不考虑损伤和考虑损伤的光面爆 过 程进行了数值模拟, 并比较2 种模型最大有效应力随距离的变化关系结果表明: 在 孔壁压力孔径和抵抗线不变的条 件下, 考虑损伤影响时可适当加大光面爆 的炮孔间距; 在孔壁压力孔径和孔距不变的条件下, 可适当加大光面爆 的 抵抗线通过现场爆 试验, 考虑爆 损伤效应模型得到了较好的验证 : 光面爆 ; 损伤; 数值分析; 爆 参数 : T U 94 : A : 167144 31( 2006) Numerical Analysis and Parame ers Op ion Based on Damage in Smoo h Blas ing ZH A N G Chengliang , L I X inp ing, MI Jian, WA N G Yanl i, WA N G T ao ( School o Civil Engineer ing and Ar chitecture, Wuhan U niv ersity o T echnology , Wuhan 430070, China) Abs rac : T he 2D dimension elasticplastic model o rock mass w as adopted and the smoo th blasting process w ith and w ith out damage w ere simulated w ith the dynamic inite progr am A NSYS/ L SDYNA . T he relation betw een the max imum e ective stresses and distance in the tw o kinds o models w as compar ed w hen considering t he damage e ect . T he results show that the in ter val o holes could be w iden under the same condit ion o explosion pressur e, aperture and burden , and the burden could be w iden under the same explosion pressure apertur e and interval. T he model considering damage w as proved by insite blasting ex periment w ell. Key words: smooth blasting; damage; numerical analysis; blasting parameters [ 1] , , ; , , , , , , , , ; 1 [ 25] , , , , , , ; , :. : ( 1978) , , . Email: zclky78@ 163. com 28 7