基于钻孔摄像技术的岩体完整性评价方法

通过钻孔摄像技术获取岩体的结构特性，提出一种评价岩体完整性的新方法--RMDI法，并应用于开滦煤矿唐山矿区数字钻孔摄像工程地质勘测中的离层孔。结果表明：（1）高精度的钻孔图像能为岩体完整性评价提供可靠的结果；（2）DIDF能反映钻孔壁岩体完整程度的轴向分布状况；（3）RMDI法用于评价岩体完整性是可行的；（4）RMDI法能实现全孔段或局部孔段的岩体完整性评价，完成对岩体不同完整段的位置搜索。

Method for evaluating rock mass integrity based on borehole camera technology

By borehole camera technology, the structural characteristics of rock mass can be obtained. Further, a new method, rock mass integrity index (RMDI), is proposed to describe rock mass integrity. And this method is applied to separation strata boreholes for site investigation of the digital borehole camera project of Tangshan mining area of Kailuan coal mine. The application shows that: (1) The high resolution borehole image gives superior results for evaluating rock mass quality; (2) Integrity index density function (DIDF) can reflect rock mass integrity degree along axial distribution of boreholes well and truly; (3) The use of rock mass integrity index (RMDI) to evaluate rock mass quality is feasible, accurate and effective; (4) RMDI can be used to evaluate rock mass integrity in full or part range of boreholes, and to search for the optimal position with different integrity segment of rock mass in boreholes.