论文部分内容阅读
砂金是金的重要来源之一.砂钻是勘探砂金矿床的有效手段.我国开展砂金钻探工作起步较晚,目前在生产管理和技术管理方面还没有建立起一套完整的规章制度和操作规程.本文在调查砂金钻探现状的基础上,对今后的砂金钻探工作提出几点意见. 砂金钻探的现状随着砂金地质找矿工作的广泛开展,砂钻开动的总台数逐年增加,钻探技术水平不断提高.由于砂金埋藏浅,砂钻孔深一般不超过30米,因此所用设备、材料和钻进工艺都比金刚石岩心钻进要简单些,概括起来,砂钻设备的主要特点是: 1.可拆性能好,重量轻.一个砂钻钻孔只需几个台班就能打完;同时,钻孔多布置在古河床或现代河床附近,而且常常要求在夏季施工(便
Placer gold is one of the important sources of gold sand drilling is an effective means of exploration of gold and gold deposits in China started sandy gold drilling started later in the production management and technical management has not yet established a complete set of rules and regulations and operating procedures. Based on the investigation of the status quo of sand gold drilling, some suggestions are put forward for the future gold sand drilling.Current situation of gold sand drilling With the extensive exploration of gold and gold geology, the total number of sand drilling starts is increasing year by year, and the drilling technology is continuously improved Due to the shallow burial of the gold deposit, the depth of the sand drilling hole is generally not more than 30m, so the equipment, materials and drilling technology used are easier to drill than the diamond core. Summarizing, the main features of the sand drilling equipment are: 1. Detachable Good performance, light weight.A sand drill hole can only be completed by a few station shifts.At the same time, the drilling holes are arranged near the ancient riverbed or the modern riverbed, and often require construction in the summer