洛钼露天矿复杂采空区治理一体化技术应用

Application of Integration Technology in Handling Complex Mined-out Area in Luomu Open-pit Mine

介绍了洛钼露天矿采空区探测、采空区稳定性监测和采空区处理一体化技术。洛钼露天矿采用高密度电法和地震映象法对采空区位置进行初探,再利用钻孔探测和三维激光探测方法对采空区赋存形态进行精确探测。利用微震监测技术对采空区稳定性进行全天候、实时和立体监测,在对矿山采区岩体稳定性微震量化评估、爆破震动对采空区稳定性影响和采空区治理前后稳定性监测等方面取得了很好的应用效果。采用碎石充填和控制爆破技术对不同采空区进行处理,并根据采空区的赋存特点和处理的难易程度,对采空区进行分类一次处理或分次处理。洛钼露天矿采用该一体化技术已经成功治理了大量采空区,保障了矿山的安全生产,对矿山的可持续发展有着重要的意义,对国内外相似矿山有重要的参考价值。

The integration of detection, stability monitoring and handling technology of mined-out area in Luomu open-pitmine are introduced. The high-density electrical and seismic imaging method are used to preliminarily detect the position ofgobs, and then the drilling exploration and three-dimensional laser detection methods are adopted to detect the accurate charac-teristics of gobs. Microseismic technology is used for all-day, three-dimensional and real-time monitoring on the gob stability. Itmakes a very good application effect on the stability quantitative analysis, the influence of blasting vibration to the gobs and thestability monitoring in the processing of handling gobs. The gravel filling and controlled blasting technology is adopted to treatdifferent gobs. According to characteristics of mined-out areas and the difficulty in gob handing, gobs are treated once or severaltimes to finish the handling. With the use of this integrated technology, a large number of gobs in Luomu open-pit mine havebeen successfully treated. It ensures the safety production, and has vital significance for the sustainable development of mine.Moreover, it has important reference value to the similar mine at home and abroad.