在地質勘探中,如果勘探网度选擇的經济合理,不但可以节省大量的資金,大大縮短勘探时間,而且可以保证儲量的准确程度。与勘探网度有关系的高級儲量 (A_2+B) 的要求問題,亦是一个很重要的技术經济問題。因为高級儲量多,必將化費很多的投資和时間。因此,正确地选勘探网度,合理地确定高級儲量的比例, In geological prospecting, if the economic rationality of the exploration network selection, not only can save a lot of money, greatly reducing the exploration time, but also to ensure the accuracy of reserves. The requirement of advanced reserves (A_2 + B) related to the exploration network is also a very important technical and economic issue. Because of the high level of reserves, it will cost a lot of investment and time. Therefore, the correct selection of exploration network, a reasonable determination of the proportion of senior reserves,