甘肃阳山金矿沉降预测模型探讨

Discussion on subsidence prediction model in the Yangshan gold mine,Gansu

2009年开始对阳山金矿305号矿脉利用坑道采矿,矿区内已经形成了规模不等的4个矿渣堆。截止到2013年,坑道地表和矿渣堆附近部分区域已有明显沉降出现,这对坑道地表和矿渣堆附近的各种地质工程的施工造成了不同程度的安全隐患。文章选取SM04采矿坑道及矿渣堆,在它们的周围区域布置12个观测点,利用高程拟合方法采集这12个点10期的高程数据,通过等维新息模型对这些数据进行分析对比,同时根据矿区实际,增加水文观测数据和坑道内岩石承载数据作为模型演算参数,尝试为阳山矿区建立一套沉降预测模型,以便为矿区地质工程施工提供安全预警。

Since the Yangshan gold mine started mining No. 305 gold lode by underground tunneling in 2009,four mining slag piles were stocked. By the end of 2013,it was observed there are apparent subsidence in the tunnel surface and slag stock area which will result in the potential risk hazard for those engineering works in the tunnel surface and slag pile area. This article carried out the case study by setting up 12 observation stations on SM04 mining tunnel and slag pile area,the elevation data at these stations were collected by using elevation fitting method,and the comparison of these elevation data was conducted by using gray model analysis. In the meanwhile,based on the actual mining situation,increased hydrological observation data and loading- bearing data of rocks within tunnel as modelling parameters,the subsidence predictive model for the Yangshan gold mine area was established in order to provide early warning for the geological engineering work in the mine area.