三一旋挖钻机工法讲座(4)——旋挖钻机在钻具易打滑地层中的施工工法

钻具打滑通常和旋挖钻机的作业地质密切相关,一般而言,打滑现象多出现在泥岩.砂质泥岩.硬塑性黄土以及粘土地质中。打滑现象是泥岩类地层钻进的一大难题,要提高施工效率就必须解决好这一问题。本文通过实际案例分析,总结出对钻斗进行改造等方法.成功的解决了旋挖钻机在钻进过程中钻具易打滑问题。

Working method of the rotary drilling rig when drilling in skidding strata

Skidding is closely related to the geological, generally speaking, skid phenomenon is often discovered in shale, sandy shale, hard plastic loess and clay geology. Skid phenomenon is a big problem of drilling in the mudstone stratigraphic, which must be solved if wanting to improve the construction efficiency. This article through the analysis of actual cases, summed up many measures such as drilling remake, successfully solved the skidding problems of the rotary drilling rig in drilling process.