基于钻孔摄像技术的珊瑚礁完整性评价分析

Analysis of coral reef integrity based on borehole camera technology

在西沙琛航岛地质调查中,应用数字钻孔摄像技术,通过引入RMDI法开展对珊瑚礁完整性的分析研究,结合岩体分级标准,构建珊瑚礁完整性指数与珊瑚礁完整程度的对应关系,实现针对珊瑚礁完整性的工程评价。通过对CK1孔和CK2孔的摄像勘察和统计分析,按照基于RMDI法的珊瑚礁完整程度分级标准,对两孔进行珊瑚礁完整性评价,与实体岩芯保持一致,并估算出两孔之间珊瑚礁的岩体完整程度。研究结果表明:在珊瑚礁完整性评价中,按珊瑚礁完整性指数构建的分级标准是可行的;按RMDI法建立的珊瑚礁完整程度是准确的;针对珊瑚礁的钻孔摄像勘察和统计分析具有重要意义。

The geological survey in Xisha Chenhang Island has an application of digital borehole camera technology. The RMDI method was used to carry out the analysis and research on coral reef integrity according to rock mass classification standard, and achieves the coral reef integrity evaluation by combining the coral reef integrity index with coral reef integrity degree of correspondence construction. Borehole CK1 and CK2 were evaluated based on RMDI method of coral reef integrity standards, and the result is consistent with rock cores, and then the coral reef rock mass integrity between CK1 and CK2 was estimated. The results indicate that the classification system based on integrity index is feasible in the integrity evaluation of coral reefs; the coral reef integrity degree based on RMDI method is accurate and borehole camera survey and statistical analysis are of great utility in the study of coral reefs.