浅析灰岩地区钻探工艺

浅析灰岩地区钻探工艺摘要：灰岩地区最主要的特征就是岩溶发育。岩层表层溶隙、溶沟、 溶槽等岩溶裂隙发育，造成岩面埋深变化大，局部地段形成负岩面。在钻 探过程中进尺不均匀，漏浆、掉钻及夹泥层现象等，导致在

浅析灰岩地区钻探工艺 摘要：灰岩地区最主要的特征就是岩溶发育。岩层表层溶隙、溶沟、 溶槽等岩溶裂隙发育，造成岩面埋深变化大，局部地段形成负岩面。在钻 探过程中进尺不均匀，漏浆、掉钻及夹泥层现象等，导致在勘察过程中塌 孔、埋钻、无岩芯等情况出现。但岩溶发育对场地的稳定性会产生很大的 影响，因此勘察时必须钻入完整岩石一定深度，确保采取不同的基础形式 的安全性。因此在灰岩地区采取正确的钻探工艺极其重要、 关键词：灰岩、岩溶、钻探工艺 Summary:The development of the main characteristics of karst in limestone area is. Rock surface karst, karren, solution groove, karst frac lured rock surface, caused deep changes in local area of rock surface, forming anegative. During the process of dri11ing footage is not uniform, leakage, drills and mud layer phenomenon, resulting in the exploration process of hole collapse, burying, no core condition. But the karst development will have agreat influence on the site stability, so the investigation must be dri11ed into the intact rock depth, ensure take safety foundation forms of different. Therefore in the limestone area of drilling technology is extremely important to correct, Keywords: 1imestone, karst, drilling technology TD8 中图分类号：