摘要
采用UDEC数值模拟计算,对岩层移动模拟研究中确定不受采动影响巷道数值模拟模型左右边界位置的方法进行了研究.结果表明,当模型边界与巷道中心距离达到了巷道跨度的5倍后,继续加大模型宽度,对巷道顶、底板移近量、两帮移近量以及巷道顶板以上岩层、底板以下岩层和两帮深部岩体的位移和应力影响很小,因此模型的左右边界应取在距离巷道中心5倍巷道跨度以外.若主要研究巷道的破坏状况,则模型边界可以近一些;若研究开采的影响状况,则到边界的距离要远一些.
By using UDEC software, the method of determinations on the numerical simulation model＇s left- right boundary position of the roadway that have no influence by mining when in simulating strata movement were studied. The results show that the influence on the roof - to - floor convergence, the side - to - side convergence, the strata stress and displancement of above roof, nether floor and deep terrene in two sides are small, when broadening the model＇s breadth unceasingly after the distance between model＇s boundary and roadway center reach to five times roadway＇s breadth. So, the model＇s left - right boundary position may locate in above five times roadway＇s breadth from roadway center. When study the cracking status of gateway, model boundary can be close to gateway, while study the influencing condition of mining, it should be far off gateway.
出处
《河南理工大学学报（自然科学版）》
CAS
2008年第2期153-158,共6页
Journal of Henan Polytechnic University（Natural Science）
基金
河南省教育厅自然科学研究计划项目(2008A440006)
河南理工大学博士基金资助项目(648234)
关键词
采矿工程
数值模拟
模型
边界位置
mining engineering
numerical simulation
model
boundary position
