Related Experiment Video
Updated: May 25, 2025

Mechanical Expansion of Steel Tubing as a Solution to Leaky Wellbores
Published on: November 20, 2014
A study on surrounding rock characteristics inducing severe large deformation in tunnels and methods for determining
Zhongsheng Tan1, Jinpeng Zhao2,3, Zonglin Li1
1Key Laboratory of Urban Underground Engineering of Ministry of Education, Beijing Jiaotong University, Beijing, 100044, China.
Abstract:
The Haba Snow Mountain Tunnel experienced severe deformation caused by foliated metamorphic basalt. This rock has high metamorphism, easy weathering, and low strength. This study examines the rock's microscopic characteristics and mechanical properties to understand its impact on tunnel stability and offer guidance for similar engineering challenges. Through comprehensive analysis of the rock's composition and structure, combined with mechanical strength testing, the study establishes strong correlations among uniaxial compressive strength, rebound strength, and point load strength. Key findings reveal that the point load index correlates linearly with uniaxial compressive strength (y = 10.97x, R²=0.93). These results not only enhance the understanding of foliated metamorphic basalt's properties but also offer practical recommendations for optimizing strength testing methods. This study provides crucial technical references for tunnel design under similar geological conditions.
More Related Videos
12:30High-pressure, High-temperature Deformation Experiment Using the New Generation Griggs-type Apparatus
Published on: April 3, 2018
06:55Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
Published on: August 5, 2016
Related Concept Videos
Mechanical Characteristics of Steel
The tension test is fundamental for determining tensile strength. In this test, a steel specimen is stretched using a gripping device until it breaks. The data collected during this test are used...
Temperature Dependent Deformation
Stress-Strain Diagram - Ductile Materials
Deformation of Member under Multiple Loadings
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
Tensile Strength Considerations of Concrete
The dimensions and shape of a concrete specimen...
Deformation in a Circular Shaft