内排压脚合理追踪距离的确定  

Determination of restraining reasonable tracing distance

作　　者：侯殿昆[1] 曹兰柱[2] 贾兰[2] 

机构地区：[1]内蒙古科技大学资源与安全工程学院,内蒙古包头014010 [2]辽宁工程技术大学资源与环境工程学院,辽宁阜新123000

出　　处：《辽宁工程技术大学学报（自然科学版）》2009年第2期192-194,共3页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金资助项目(50374042)

摘　　要：为宝日希勒露天矿实行內排压脚滑坡防治措施,须确定合理的追踪距离,运用二维刚体极限平衡和FLAC3D数值模拟计算方法研究内排台阶与采矿台阶的跟踪距离对端帮的钳制作用的影响。分析端帮边坡应力、位移变化云图,可以看出随着跟踪距离L增大应力场、位移场发生变化的规律,即跟踪距离L越小,边坡位移越小,边坡变形范围越小,边坡越稳定。从而确定了合理的追踪距离,证明了内排压脚、煤台阶支挡对提高边坡稳定性的积极作用。因此随着采矿工程的发展,内排土场同步发展,利用內排压脚滑坡防治方法不失为一个即经济又合适的好方法。In order to carry out the internal dumping pressure foot landslide prevention measures in Baorixile open-pit mine, the reasonable track distance has to be determined. Using two-dimensional rigid body limiting equilibrium and FLAC3D numerical simulation computational method ,the internal dumping stair and the mining stair＇s track influence is researched on the handcuff function of end slope. The stresses and the displacement cloud chart of slope-side are analyzed. As can be seen that with the tracking distance L increasing stress field, displacement field changes in the law, that is, the smaller the tracking distance L, the smaller the slope displacement, the smaller the scope of slope deformation, more stable slope is. Thus the reasonable tracing distance is determined and is proved that internal dumping pressure foot and coal stair support played the positive role in enhancing side slope stability. So with the development of mining engineering and internal dumping, using the restraining prevention method is an economic and appropriate method.

关 键 词：内排土 压坡脚 追踪距离 

分 类 号：TD854[矿业工程—金属矿开采]