摘要
为进一步优化露天矿排土场岩土块体堆置顺序,降低运输费用,针对现阶段尚未有效解决多时段露天矿卡车内排规划整体优化问题展开研究,提出了一种面向卡车内排运输、考虑采剥动态变化的内排土场岩土块体堆置顺序优化算法。排弃位置以块体表示,采剥位置以实体模型表示,根据各时段采剥位置实体质心点坐标、排弃块体质心点坐标和工作线长度计算运距,考虑实际对运距进行修正,再根据运输成本计算各时段采剥位置到排弃块体的运输费用。对排弃块体加入时间维度,进行分时段运输费用计算。以剥离物运输总费用最小为目标函数建模,将排土场排弃时空发展关系、安全距离和排弃量等作为约束条件,构建了内排规划模型。采用0-1整数规划对模型进行多时段一次性求解,得出内排土场最优岩土块体堆置顺序。以某露天矿为例,运用所提出的算法对该矿内排土场岩土块体堆置顺序进行了优化,结果显示:最优排土规划方案的剥离物运输总费用为92099.41万元,相比原设计方案节省1284.17万元,达到内排土场岩土块体排弃时间及排弃位置最优的优化目标。研究结果进一步反映出:在完成排土场设计的基础上深层次挖掘排土工程时空发展关系,提出多时段排土规划整体优化思路,对于制定科学合理的排土规划具有一定的参考意义。
In order to further optimize the stacking sequence of rock and soil mass in open-pit dump and reduce transpor-tation costs,an optimization algorithm for the stacking sequence of rock and soil mass in open-pit dump is proposed,which is o-riented to the internal dumping transport of trucks and takes into account the dynamic changes of mining and stripping.The dumping position is represented by a block,and the mining and stripping position is represented by a solid model.The transport distance is calculated according to the coordinates of the entity centroid point of the mining and stripping position in each peri-od,the centroid point coordinates of the dumping block body and the length of the working line.The transport distance is cor-rected considering the actual situation,and then the transport cost from the mining and stripping position to the dumping block in each period is calculated according to the transport cost.The time dimension is added to the abandoned block,and the time segment transportation cost is calculated.Based on the objective function of minimizing the total transport cost of the stripping material,the internal discharge planning model was constructed by taking the spatio-temporal development relationship,safe distance and discharge volume of the dump as constraint conditions.0-1 integer programming was used to solve the model at one time in multiple periods,and the optimal stacking sequence of rock and soil mass in the inner dump was obtained.Taking an open-pit mine as an example,the proposed algorithm is used to optimize the stacking sequence of rock and soil masses in the mine′s internal dump.The optimization results show that:the total stripping transport cost of the optimal soil discharge planning scheme is 920.9941 million yuan,which saves 12.8417 million yuan compared with the original design scheme,and achieves the optimization goal of the optimal time and location of the soil mass discharge in the inner dump.The research re-sults further reflect that:on the basis of the completion of the design of the waste dump,the deep excavation of the spatial and temporal development relationship of the waste dump engineering and the overall optimization of the multi-period waste dump planning are proposed,which has certain reference significance for the development of scientific and reasonable waste dump planning.
作者
赵明
王忠鑫
辛凤阳
王金金
曾祥玉
ZHAO Ming;WANG Zhongxin;XIN Fengyang;WANG Jinjin;ZENG Xiangyu(CCTEG Shenyang Engineering Company,Shenyang 110015,China)
出处
《金属矿山》
CAS
北大核心
2023年第9期63-68,共6页
Metal Mine
基金
中国煤炭科工集团有限公司科技创新创业基金专项重点项目(编号:2018-2-ZD004)。
关键词
露天矿
内排规划
整体优化
堆置顺序
0-1
整数规划
open-pit mine
internal dumping programming
overall optimization
stacking sequence
0-1 integer program-ming
