基于三维激光扫描的隧洞开挖衬砌质量检测技术及其工程应用

doi:10.13722/j.cnki.jrme.2016.0597

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Abstract

The 3D laser scanning technology makes up for this shortcomings which can be used to obtain the spatial information of objects rapidly，precisely and comprehensively. By using of 3D laser scanner，the spatial information of surrounding rocks and lining of the Changheba #2 flood discharging tunnel is sampled，and the improved ICP algorithm is used for point clouds registration，then according to the surrounding rock mass and lining surface features，3D excavation tunnel model and lining model are established by delaunay triangular meshes algorithm and NURBS algorithm，respectively. Based on the Boolean logic operation between established models and design models，the over-under-excavated values are measured accurately，and the measured results indicate that，the tunnel over-excavated degree is influenced by the geological condition and the quality of rock masses. Through the analysis of shape deviations at four lining tunnel model segments by comparing with design sections，the result shows that the deviation of lining shape relate to not only pouring quality but also excavation quality，besides，the influence of lining deformation can not be ignored. Measurement results show that the shape deviations are well controlled and the maximum deviation is less than 10 mm，which are meeting the design requirements.

Key words： tunnelling engineering 3D laser scanning Boolean logic operation over-under-excavated values shape deviation

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	Articles by authors
	LI Haibo1
	YANG Xingguo1
	ZHAO Wei2
	HUANG Kangxin3
	ZHOU Jiawen1

Cite this article:

LI Haibo1,YANG Xingguo1,ZHAO Wei2, et al. Measurement technology and its application for tunnel excavation and lining quality based on 3D laser scanning[J]. , 2017, 36(S1): 3456-3463.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2016.0597 OR https://rockmech.whrsm.ac.cn/EN/Y2017/V36/IS1/3456

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