摘要
为分析深部复杂地质巷道U型钢支护的优化问题,以山东某矿-550中段为工程背景,利用ANSYS有限元法,建立深部巷道支护力学三维模型,分析深部巷道围岩稳定性;运用正交试验法对U型钢支护间距、侧应力系数和监测点影响因子进行正交试验;结合现场爆破测振试验,验证数值模拟及正交试验的有效性。研究结果表明:当侧应力系数小于等于1时,垂直应力起主导作用;U型钢支护的最佳间距为1 m,可满足IV级围岩稳定性要求。
To analyze the optimization problem of U-shaped steel support for deep complex geological roadway,the middle section of-550 in a certain mine in Shandong province was taken as engineering background,a three-dimensional model of deep roadway supporting mechanics was built by using ANSYS finite element method,and the stability of deep roadway surrounding rock was analyzed. The orthogonal test method is used to carry out the orthogonal test on three influencing factors,such as the support spacing of Ushaped steel,lateral stress coefficient and monitoring point. The validity of numerical simulation and orthogonal test was verified by a field blasting seismic test. The results show that when the lateral stress coefficient is less than or equal to 1,the vertical stress plays a dominant role,and that the optimum spacing of U-shaped steel support is 1 m,which can meet the stability requirement of IV class surrounding rock.
作者
王剑
左宇军
董陇军
王浩
刘怀谦
WANG Jian;ZUO Yujun;DONG Longjun;WANG Hao;LIU Huaiqian(Mining College,Guizhou University,Guiyang Guizhou 550025,China;Engineering Center for Safe Mining Technology Under Complex Geologic Condition,Guiyang Guizhou 550025,China;School of Resources and Safety Engineering,Central South University,Changsha Hunan 410083,China)
出处
《中国安全科学学报》
CAS
CSCD
北大核心
2018年第12期96-101,共6页
China Safety Science Journal
基金
国家自然科学基金资助(51574093
51774101)
贵州省高层次创新型人才培养项目(黔科合人才(2016)4011号)
关键词
正交试验法
复杂地质深部巷道
U型钢
支护优化
爆破振动
orthogonal method
deep roadway of complex geological mine
U-shaped steel
support optimization
blasting vibration
