China University of Mining and Technology

Center for Hydrogeology and Environmental Geology Survey, Cgs

Shulin Zhang

Liu Yang

Manchao He

Zhehan Yu

Chengyu Miu

Guangtao Dong

Fawang Zhang

Fei Gong

Benchao Xu

Jiawei Cai

A method and apparatus for classifying water-rich weak surrounding rock based on in-situ scribing are provided. The method includes placing a scribing device on tunnel cross-sections of varying lengths; performing in-situ scribing on the tunnel cross-sections to obtain the mechanical parameters of the surrounding rock and determining the surrounding rock strength at different locations; while performing in-situ scribing, employing near-infrared spectroscopy to simultaneously measure the in-situ spectrum of the tunnel surrounding rock, thereby determining the surface water content at different locations; based on the scribing mechanical parameters of the tunnel surrounding rock, establishing a scribing depth curve, and calculating a joint development degree of the tunnel surrounding rock at different locations from the scribing depth curve; and based on the surrounding rock strength, surface water content, and joint development degree of the tunnel surrounding rock at different locations, classifying the surrounding rock grades of the tunnel cross-section.

Method and apparatus for classifying water-rich weak surrounding rock based on in-situ scribing

Growing community of inventors

Beijing, China

Shulin Zhang