摘要
河南省煤炭资源丰富,但有的矿区由于火山岩的作用,使煤系地层遭受破坏,导致煤层不连续或局部的无煤区。为了在大面积的火山岩喷发区了解次火山岩的侵入范围,圈定局部含煤地段,长期以来都是利用钻探或盲目凿井(集体或个体采矿者)的方法,了解边界范围或圈定含煤地段。钻探或凿井不仅工程量大,费用昂贵,而且还得不到精确、完整的次火山岩侵入区的资料。近年来,物探工作以其成本低、速度快、工作程度高、效果明显等特点在扩大煤田储量的勘查中得到了广泛的应用。本文采用微磁和电测深法探测侵入岩的边界,圈定残留煤段,效果良好。
he diamond nether millstone has been widely used in the gem processing factory.In this paper,the authors expounded that the testing research to manufacture diamond nether millstone used the electroplating method.The technology can be divided into two processes,pretreatment before electroplating and electroplating technology of the diamond nether millstone.The authors have also analysed the factors that effecting the quality of eletroplating layer.
出处
《河南地质》
1998年第2期137-144,共8页
Henan Geology