ShapeMetrix3D系统在甲玛矿工程地质调查中的应用

Application of ShapeMetrix3D system in the engineering geology survey of Jiama copper mine

针对目前岩体结构面信息获取,尤其在高原矿山上,主要是以人工现场接触测量为主,劳动强度大、效率低下的现状,借助先进的ShapeMetrix3D三维数字摄影测量系统,对甲玛矿4420m、4440m、4460m、4465m及4490m五个分段的巷道岩体结构面进行摄影测量,对获取到的结构面参数进行分组、分析,得到结构面几何特征参数的详细数据,并对其进行数理统计计算、分析,拟合出结构面各种几何信息的概率分布模型。通过选取典型测点进行结构面扫描分析,统计得到各分段各岩性结构面优势产状分布规律、所有分段各岩性结构面优势产状分布规律,结果表明:甲玛矿整体上岩体节理状态中等,个别中等偏下,其中,4465m分段最好,4440m、4460m分段次之,4420m、4490m分段最差。本文通过对甲玛矿地下巷道进行结构面几何参数统计,为甲玛矿下一步岩体稳定性分析等工作提供定量依据。

A 3D contact-free measuring system（3GSM）was employed to acquire the geometrical information of rock mass structures of 4420 m,4440 m,4460 m,4465 mand 4490 mroadways of Jiama copper mine based on the present status which the discontinuities were mainly captured by human measurement contacting the rock at present with large amount of labors and low efficiency.Three-dimensional solid model of roadway was created,and then the geometrical information of discontinuities was gotten from threedimensional solid model by 3GSM.The probability distribution model of the trace,dip angle and dip orientation were built according to mathematical calculation of statistics for all kinds of geometrical information of these discontinuities.By selecting and analyzing typical geometrical information of rock mass structures,the distribution laws of dominant structural plane for all kinds of lithology and levels were obtained statistically.The results show that rock mass structures belong to medium state as a whole and some are below average,which is best in 4465 m,better in 4440 m and 4460 m,and worst in 4420 m and 4490 m.In this paper,geometrical information of rock mass structures of roadways in Jiama copper mine are acquired statistically,which can supply quantitative basis for next stability analysis of rock mass.