基于DTM离散模型的露天矿测量验收方法

摘要

There are many disadvantages in conventional method,such as slow operating speed,poor stability and big er-ror. According to these disadvantages,taking the Panjiantian iron mine as the research example,the DTM( digital terrain mod-el) discrete model which lies between the discrete model and three dimensional solid model is established. Compared with the corresponding three dimensional solid model from the aspects of calculation accuracy,calculation speed,stability and visual dis-play,the analysis results show that compared with the three dimensional solid model,the calculation error of the DTM discrete model is less than 1. 00%and the calculation speed is also improved one order of magnitude. It is very stable and the accuracy can meet the requirements of accuracy;Besides that,the discretization error of the DTM discrete model is lower than the block model. The above analysis results further show that the DTM discrete model is worth being used as the effective method of ore-bearing rock measurement acceptance in open-pit mining,and also has some reference for the related calculation work of civil engineering and highway.%针对传统测量验收方法运算速度慢、稳定性差及离散误差大等问题,以四川潘家田铁矿为例,提出了一种介于完全离散模型及三维连续模型的DTM( Digital terrain model)离散模型。从计算精度、速度、稳定性及直观显示等方面与相应的三维实体模型进行对比分析,结果表明：与三维实体模型相比, DTM 离散模型的计算误差小于1．00%,运算速度快1个数量级,计算稳定且精度满足准确性要求；与块体模型相比,DTM离散模型的离散误差较小。上述分析结果进一步表明,DTM离散模型可以作为露天矿生产中矿岩量测量验收的有效方法,并且可推广应用于土建及公路的相关生产计算中。