Peng Lin

TL;DR: In this paper, the authors investigated the crack coalescence and peak strength of rock-like materials containing three parallel frictional flaws and found that the failure mechanism strongly depends on the cracks coalescence pattern between pre-existing flaws.

TL;DR: In this paper, the authors present the results of observations of scanning electron microscope (SEM) micro/macro crack development and simultaneous measurements of temperature-dependent stress-strain relations of hardened cement pastes (HCP) and mortar under a steady thermal state (up to 500 °C) and a displacement-controlled loading process.

TL;DR: In this paper, the authors examined crack initiation and coalescence mechanisms and failure behavior in a granite material containing multiple holes under uniaxial compression and found that the hole distribution strongly affects the stress for crack initiation, coalescence and peak value.

TL;DR: Wang et al. as mentioned in this paper presented the main progress in the safety risk management of underground engineering in China over the last decade, i.e., establishment of laws and regulations for safety risk Management of underground Engineering, implementation of the safety-risk management plan, establishment of decision support system for risk management and early-warning based on information technology, and strengthening the study on safety riskmanagement, prediction and prevention.

TL;DR: In this paper, the authors investigated the failure behavior and instability of the tunnels constructed in the Jinping II hydropower station and concluded that the tunnels should be stable and the majority of the rock mass remains intact even if the applied load is 1.3 P0, where P0 is the in-situ stress.