老矿山残矿资源回收方案设计中三维探测及建模技术的应用

目前我国绝大多数中小型老矿山残矿回收面临一系列问题，包括资料缺失无法准确判定老采空区及剩余资源位置，无法准确掌握剩余资源形态及可回收量，回收方案设计与实际资源相差较大等。通过将三维探测及建模技术应用于老矿山残矿资源精准定位及回收方案设计中，有助于解决以上问题。以福建浦城屏峰硫铅锌矿为例，通过对老采空区采用三维激光扫描构建采空区三维模型，结合三维建模计算，构建了目前可回收的剩余资源三维模型。通过模型划分及切割，按照矿体实际形态，在三维模型中布设采切及穿孔工程，并将其导入平面施工图中，不仅可以减少设计工作量，而且能够精准匹配矿体，减少设计偏差。由于周边存在大量老采空区，为保障安全，在采空区及剩余资源精准三维模型的基础上，制定了采空区稳定性监测方案，布设了监测传感器，保障了资源回收安全。

Application of 3D Detection and Modeling Technology in Recovery Scheme Design ofOld Mine Residual Mineral Resource

present,most of the small and medium sized old mines in China are facing a series of problems,including the lack of data that cannot accurately determine the location of old mined out areas and remaining resources,cannot accurately grasp the remaining resource forms and recoverable amounts,recycling scheme design cannot match actual resources,etc.The above problems can be solved through the application of 3D detection and modeling technology in the accurate positioning and recovery scheme design of old mine residual mineral resource.Taking Pinfeng S Pb Zn Mine of Fuchen County of Fujian Province as an example,by using three dimensional laser scanning technology to construct a three dimensional model of the goaf in the old goaf,combined with the three dimensional modeling calculations,the three dimensional model of recyclable residual mineral resource is established.Through model division and cutting,according to the actual shape of the ore body,the cutting and perforating works are arranged in the 3D model,and then imported into the plane construction drawing,which reduces the design workload,and the scheme can accurately match the ore body and reduce the design deviation.Due to the existence of a large number of old mined out areas,in order to ensure safety,based on an accurate three dimensional model of the mined out area and remaining resources,a stable monitoring plan for the mined out area was developed,and monitoring sensors were deployed to ensure recovery safety.