金属资源的紧缺与隐伏矿找矿的思考

我国金属资源的紧缺,不是资源的匮乏,而是对隐伏矿找矿的不力.就空间而论,隐伏矿只是埋藏较深的矿床,它不涉及地质成矿的新理论.需要解决的是深部找矿的能力,要求找矿方法与技术有新的突破.当前矿山开采的深度可达1km左右,据此,要求隐伏矿找矿的深度至少应该达到开采深度,地质(物理)填图达到2～3km的深度,是完全必要的.地球物理在深部探测方面具有相对优势.但现有地面地球物理方法,尚不能满足隐伏矿找矿的需要,应加大科研力度,依靠基础研究,有望3～5年的时间,能有系列的新方法与新技术的出现,满足隐伏矿的有效勘查.由于隐伏矿找矿失去了矿产的直接信息,只能依靠深部探测的方法、技术,得到间接信息.间接信息的欠定性,会给找矿带来高风险性.为了降低高风险的巨大损失,除应具备足够的有效信息量外,还必须对信息表述的对象,进行去粗取精、去伪存真的分析与研究.而基于不同知识背景的多学科,对信息的综合研究,能最大限度地将信息的欠定性转化为矿产的专属性,从而发现隐伏矿床.建立多学科互补、合作的找矿机制,是找矿的必然要求,也是矿产资源部门体制改革的重点.

THOUGHT ON THE SHORT SUPPLY OF METAL RESOURCES AND PROSPECTING CONCEALED ORES

Instead of resource pinch, the difficulty in prospecting metal ore deposits due to the lagging knowing has been the main reason for the short supply of metal resources in China. The concealed ores were imbedded in deeper space. Exploration of those ores is not involved with new theory. The problem to be solved is to improve the prospecting ability in deep, and to find new methods and technologies in prospecting. Currently, the depth of ore exploitation is about 1 km, so that the depth of prospecting concealed ores must at least meet this depth of exploitation, and it is absolutely necessary to reach 2 to 3 km in depth for geological (geophysical) mapping. Geophysics is predominant comparatively in the deep exploration, but couldn't meet with request of prospecting concealed ores. A series of new methods and new technologies would come forth in 3 to 5 years to satisfy efficient prospecting concealed ore. All progresses depend on the basic researches and enhancement investment. There is no direct information, only indirect information depended on the methods and technologies for prospecting concealed ores could explore in the deep. It could be venturesome to prospect on the indirect information. In order to reduce the risk, except for the enough information, the synthetically analyses and investigation on the information is required. The information must be abstracted and distinguished. Concealed ores could be found when the characteristic information comes from the uncertain information by synthetically research with multidisciplinary. It is necessary for prospecting to build the mechanism of cooperation and help each other of multidisciplinary. And so is keystone in reform of the mineral department.