露天多金属矿山地下采空区综合探测分析

由于地采转露采多金属矿山的地质条件复杂性和单一物探或者钻探方法的自身局限性,往往难以有效探测露天采场下的复杂采空区和盲空区,甚至漏探,对露天采矿作业构成较大的安全威胁。因此,针对地采转露采多金属矿山,通过物探和钻探手段进行多层次、多手段的采空区综合探测分析,即通过综合物探锁定空区范围,工程钻探核实空区位置,三维扫描探明空区参数,确保不漏探采空区,并能够探明复杂采空区和盲空区。实践证明,该综合探测分析方法可对多金属矿复杂采空区和盲空区进行较系统和全面的分析,为后续崩落爆破处理奠定基础,从而达到安全开采隐患资源的目的。

Comprehensive Survey and Analysis of Underground Goafs in Open-pit Polymetallic Mine

For the complex geological conditions of the open-pit polymetallic mines transferring from underground mines and the limitation of a single geophysical exploration or drilling method，the complicate underground goafs and the unknown underground goafs usually can not be detected effectively，even not be detected at all，which greatly threaten the safety of open pit mining.Therefore，in view of the feature of the open-pit polymetallic mines transferring from underground mines，the geophysical exploration and the drilling method are combined to survey the goafs consecutively.That is，the distribution of the underground goafs is detected by synthetical geophysical method；the real location of the underground goafs is defined by engineering drilling survey；and the specific parameters of the underground goafs are gained by the Cavity Auto-scanning Laser System.The three methods above can ensure all goafs detected and explore all the complicate underground goafs and the unknown underground goafs.According to practices，it is proved that the complicate underground goafs and the unknown underground goafs all can be analyzed comprehensively and systematically by this synthetical probing technique，which provides a foundation for the underground goafs disposing by blasting，and then achieve to explore resources with potential danger in safety.