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近几年来，我队在翠宏山矿区施工的部分钻孔，位于白云质灰岩与白岗花岗岩的接触带附近，地层受构造影响，岩溶作用比较强烈，溶洞裂隙发育，极为破碎，钻进中经常发生严重漏失或孔壁坍塌。有的虽经浓泥浆、锯末、麻刀、粘土球、水玻璃速效混合液等方法处理，但都没有收到满意的效果，严重地影响了勘探速度。为了突破这一技术关键，寻找一种适应本矿区钻孔堵漏防坍的有效方法，在学习兄弟省、队先进经验的基础上，对矿区地层进行了分析，召开了老工人、技术人员座谈会，通过调查研究，认识到该矿区漏水和坍塌基本上属于裂隙溶洞型漏水。大部分的漏水钻孔都
In recent years, our team drilled part of the construction in the Cuihongshan mining area, located near the contact zone between the dolomitic limestone and the Baigang granite. The strata are affected by the tectonism and the karstification is relatively strong. The fractures of the karst cave are extremely fractured and the drilling In the frequent occurrence of serious loss or collapse of the hole wall. Some of them were treated by concentrated mud, sawdust, linen knife, clay balls and quick-mixing water glass, but none of them received satisfactory results, seriously affecting the exploration speed. In order to break through the key of this technology and find an effective way to adapt to the plugging and collapsing of the borehole in this mining area, based on the study of the advanced experience of the provinces and teams in the province, the strata of the mining area were analyzed and informal discussions were held between the veterans and technicians Yes, through the investigation and study, I realized that the leaking and collapsing of the mine area basically belong to fissure cave-type leakage. Most of the leaks are drilled