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某地砷矿系在灰质泥岩与泥质灰岩中,沿层裂隙充填交代的似层状雄黄矿床。为选用经济有效的勘探手段,六三年底在该矿进行了两个月的钻探取心试验,设计试验了“云63型隔水单动双管”(以下简称“双管”),试验钻进94个回次,进尺76米,平均采取率百分之九十以上,按回次计算最低不少于百分之七十五,取出的矿心大部分是柱状,少数在岩心管中取出来时被震碎的矿心也基本上免除了泥浆的污染。因此,通过试验认为钻探可
Arsenic mine in a limestone mudstone and muddy limestone, fissure filling along the fissure-like layer of realgar deposit. In order to select a cost-effective exploration method, a drilling coring test was conducted at the mine for two months at the end of 1933. The design and test of the “cloud 63 type single-action double-pipe waterproofing” (hereinafter referred to as “double pipe” Into 94 times back, footage into 76 meters, the average rate of more than 90%, according to the back of the calculation of a minimum of not less than 75%, most of the removed core is cylindrical, a few in the core tube to take Out of the broken heart is basically removed from the mud pollution. Therefore, drilling can be considered through experiments