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ZK 6801孔的地质情况及处理1983年施工的ZK 6801孔,由于断裂构造穿插,有39.41米的孔段破碎坍塌.所钻岩石为辉绿岩、次流纹岩破碎带、角砾凝灰岩等.钻进中用以下三种办法处理: 1.水泥封固先用500号硅酸盐水泥加CaCl灌注破碎带五次(共用20包水泥,费时15天),除一次失败外,其余几次均钻取至4级硬度的水泥心.但在182米处,发现钻穿水泥后孔内还有6米厚的砂粉,捞取不尽.多次试验证明,在该区单用水泥封固,效果不好.
ZK 6801 Hole Geological Conditions and Treatment ZK 6801 hole, constructed in 1983, fractured and fractured 39.41 meters of holes due to the fault structure interbedded. The drilled rocks are diabase, secondary rhyolite and brecciated tuff. Drilling in the following three ways to deal with: 1. Cement sealing first with Portland 500 cement plus CaCl perfusion broken five times (with a total of 20 packs of cement, took 15 days), in addition to a failure, the other several Drilled to a hardness of 4 cement heart.But at 182 meters and found that after drilling through the hole there are 6 meters thick sand powder, fishing to take.Many trials have shown that in this area cement sealing alone, Ineffective.