Shandong University

Northeast Electric Power University

Yang Zheng

Ke Wu

Guodong Li

Qiangyong Zhang

Kang Duan

Tao Yang

Dongxue Hao

Rong Chen

Hongna Yang

Qingrong Xiong

Zhihao Xing

Di Wang

Jiaxiang Xu

Jizheng Sun

Luchao Wang

Qifang Liu

Jingchuan Duan

Hongwei Zhang

Dejun Liu

Ziyi Geng

The present invention relates to the field of rock mechanics technology, and provides a three-dimensional water absorption swelling multifunctional experimental machine and method for chemical swelling rock, comprising a triaxial high-temperature and high-pressure reaction chamber, the triaxial high-temperature and high-pressure reaction chamber is respectively connected with a confining pressure loading controller, a water pressure loading controller, a temperature controller, an axial pressure loading controller, a pH value monitor and a data acquisition and analyzer; the triaxial high-temperature and high-pressure reaction chamber includes a set of internal cavity and an external cavity, a sealing liner sleeve is provided between the internal cavity and the external cavity, a rock sample is provided in the internal cavity, a water-permeable pressure hoop is provided outside the rock sample, and the sealing liner sleeve is connected with a circumferential stress-strain sensor through a displacement structure.

Three-dimensional water-absorption swelling multifunctional experimental machine and method for chemical swelling rocks

Disclosed are a shield tunnel segment structure and a construction method thereof. The shield tunnel segment structure includes segment blocks sequentially spliced in a circumferential direction. Each segment block forms a closed annular segment structure, and outer diameters of adjacent annular segment structures gradually increase in an axial direction. At least two adjacent segment blocks of the same annular segment structure form an annular inner groove, and at least one segment block of the adjacent annular segment structures is provided with an inner bump which matches the annular inner groove. At least two adjacent segment blocks of the same annular segment structure form an annular outer groove, and at least one segment block of the adjacent annular segment structures is provided with an outer bump which matches the annular outer groove. The annular outer grooves and the annular inner grooves are staggered in the circumferential direction.

Shield tunnel segment structure and construction method thereof

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Jinan, China

Yang Zheng