基于数码图像的掌子面岩体结构量化表征方法及工程应用

doi:10.13722/j.cnki.jrme.2015.1751

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摘要以隧道掌子面立体数码摄像为基础，针对隧道开挖、支护两道工序，构建隧道掌子面岩体结构量化表征体系，实现隧道轴向岩体结构及径向岩体结构表征的有效整合。针对具体工程，基于控制点测量、掌子面图像对采集、结构面提取、CAD模型再现四道工序，提出了基于数码摄像的二维掌子面裂隙模型构建方法。以测线法为手段，考虑多条测线的全断面布设方法，以单测线RBI指标为基础，以玫瑰花方位角表征测线位置、玫瑰花半径表征对应方位岩体结构RBI量化值，建立了隧道掌子面岩体结构玫瑰花表征体系，实现了隧道径向岩体结构差异性可视化分析。同时，提出了掌子面结岩体结构综合量化指标(Z-RBI)，建立了岩体结构六色分类方法，实现了掌子面岩体结构量化及结构类型划分的可视化集成。最后，采用数理方法，以序列掌子面Z-RBI值为基础，初步构建了隧道轴向岩体完整性预测方法，并进行了工程验证。

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	李术才
	刘洪亮
	李利平
	石少帅
	张乾青
	孙尚渠
	胡杰

关键词 ：隧道工程, Sirovision, 近景摄影测量, 结构面, 玫瑰花图, Z-RBI

Abstract：Since the traditional rock block index(RBI) cannot represent the spatial characteristics of the rock structure，a quantitative system integrating the evaluation index of rock structure at the tunnel axis direction and the tunnel radial direction based on RBI was built. A two-dimensional fracture model of the tunnel work face in tunnel project was established first based on the digital imaging，and the method of sampling line was employed to obtain RBI of 19 scan lines which were set on the model using the computer. The rose diagram of the RBI was also proposed in which the radius in each direction and the area of the rose reflect the RBI of the scan line and the comprehensive evaluation index of rock structure(called Z-RBI) on the working face. The six color classification of the rock structure by Z-RBI was presented，and the prediction method of the rock structure at the tunnel axis direction was also proposed and verified.

Key words： tunnelling engineering Sirovision close shot photogrammetry joint the rose diagram Z-RBI

引用本文:

李术才，刘洪亮，李利平，石少帅，张乾青，孙尚渠，胡杰. 基于数码图像的掌子面岩体结构量化表征方法及工程应用[J]. 岩石力学与工程学报, 2017, 36(1): 1-9.
LI Shucai，LIU Hongliang，LI Liping，SHI Shaoshuai，ZHANG Qianqing，SUN Shangqu，HU Jie. A quantitative method for rock structure at working faces of tunnels based on digital images and its application. , 2017, 36(1): 1-9.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2015.1751 或 http://www.rockmech.org/CN/Y2017/V36/I1/1

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