湖山铀矿重型卡车回头曲线道路破坏原因及应对措施  

Damage Reasons and Countermeasures for the Switch-Back Curve Road of Heavy Truck in Hushan Uranium Mine

作　　者：王文韬 闫国斌 黄磊 刘玉龙 汪志平 曾冰勇 杨向乐 WANG Wentao;YAN Guobin;HUANG Lei;LIU Yulong;WANG Zhiping;ZENG Bingyong;YANG Xiangle(CGNPC Uranium Resources Co.,Ltd.,Beijing 100029,China)

机构地区：[1]中广核铀业发展有限公司,北京100029

出　　处：《矿业研究与开发》2024年第5期166-173,共8页Mining Research and Development

摘　　要：露天矿山回头曲线道路是影响矿岩运输的关键路段。为提高道路回头曲线路况水平,解决该处道路凹凸不平、车辙深坑等破坏问题,以纳米比亚湖山铀矿为工程背景,分别计算、验证各个回头曲线处道路的路基强度、路面强度、超高设置,并结合生产情况提出相应管理措施。研究结果表明:地表钙结砾岩路基承载能力为1026.754 kPa大于其实际承受载荷825.0506 kPa,因此钙结砾岩路基无需换填;由路面厚度来表征道路强度大小,以各路段的车辆类型、交通量、道路设计为基本输入参数,Z1S3坑口、Z2S3坑口、6号排土场出入口回头曲线路面的最小厚度分别修正为231.91 cm、182.22 cm、185.53 cm,Z2S2坑口回头曲线路面厚度不需调整;超高、车速、拐弯半径应满足tanα=v^(2)/(Rg),且车速应控制在10 km/h,Z1S3坑口重车道与轻车道、Z2S2坑口重车道、Z2S3坑口重车道、6号排土场出入口重车道与轻车道的回头曲线超高分别修正为2.4∶100,1.6∶100,2.7∶100,3.3∶100,1.6∶100,2.5∶100;管理措施包含加强养护、规范驾驶、规范铲装三方面内容。研究结果在矿山道路安全性、使用寿命、运输效率、综合成本等方面有明显改善,可为国内外露天矿山回头曲线道路设计优化提供借鉴。The switch-back curve roads of open-pit mines are the key section which affects the transportation.In order to improve the road condition level of the switch-back curve roads and solve the damage problems of sags crests and track rut-deep,taking Hushan Uranium Mine in Namibia as the engineering background,the subgrade strength,pavement strength and superelevation setting of each switch-back curve road were calculated and verified respectively,and the corresponding management measures were put forward according to the production situation.The results show that the bearing capacity of calcium conglomerate subgrade on the surface is 1026.754 kPa,which is greater than its actual bearing of 825.0506 kPa,so there is no need to replace the calcium conglomerate subgrade.The pavement strength can be represented by the pavement thickness.Based on the truck types,traffic volume and road design of each road section as the basic input parameters,the minimum pavement thickness of the switch-back curve located on the pitheads of Z1S3,Z2S3 and the passageway of No.6 dump are respectively amended to 231.91 m,182.22 m,and 185.53 m,and the pavement thickness of switch-back curve located on the pithead of Z2S2 does not need to be adjusted.The superelevation,speed and turning radius at each switch-back curve should satisfy tanα=v^(2)/(Rg),and the speed should be remained at 10 km/h.The superelevation of the switch-back curve located on the heavy and empty lanes of Z1S3,the heavy lane of Z2S2,the heavy lane of Z2S3,and the heavy and empty lanes of No.6 dump are respectively amended to 2.4∶100,1.6∶100,2.7∶100,3.3∶100,1.6∶100,and 2.5∶100.The corresponding management measures have been put forward from three aspects:strengthening maintenance,regulating driving and standard shovel.The results have significantly improved transportation safety,service life,transportation efficiency and comprehensive costs of mine roads,and can provide a reference for the design optimization of switch-back curve roads of open-pit mines at home a

关 键 词：露天矿山 回头曲线 路基强度 回弹弯沉值 超高 

分 类 号：TD57[矿业工程—矿山机电] TD561