我队从1682年在黄山东矿区开始探矿施工，主要困难是绝大部分钻孔严重漏失，几乎孔孔都是多层漏失，有的钻孔出现300米长孔段连续漏失。由于钻孔漏失严重，阻碍了探矿生产各项经济技术指标的提高。为解决漏失问题、近几年来我队采用了R型地勘水泥堵漏。但是对小裂隙、长孔段和漏失部位不明确的漏失地层，其堵漏效果不好。经PAM—粘土—地勘水泥交联堵漏，效果良好。 Our team started the prospecting construction in Huangshan East Mine Area in 1682. The main difficulty is that most of the drilling holes are seriously lost, almost all of the holes are multi-layer ones, and some of the holes have a continuous loss of holes of 300 meters in length. Due to serious loss of drilling, hindering the prospecting of various economic and technical indicators. In order to solve the problem of leakage, in recent years, our team adopted R type geotechnical cement plugging. However, for small fractures, long holes and missing parts of the undefined loss of the formation, the plugging effect is not good. The PAM-clay - geotechnical cement plugging, the effect is good.