Results 211 to 220 of about 249,833 (291)

Numerical simulation of topographic propagation law of vibration wave in liquid carbon dioxide phase transition fracturing blasting. [PDF]

Sci Rep
Zeng Y, Li H, Xia X, Hu W, Liu X, Huang J, Zhu X.   +6 more
europepmc   +1 more source

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Peridynamic modelling of blasting induced rock fractures

Journal of the mechanics and physics of solids, 2021
This paper presents a peridynamics-based computational approach for modeling blasting induced rock fractures. A new non-ordinary state-based peridynamics approach is proposed in conjunction with a Johnson-Holmquist (JH2) constitutive model to consider ...
F. Zhu, Jidong Zhao
semanticscholar   +1 more source

Numerical study on the behavior of blasting in deep rock masses

Tunnelling and Underground Space Technology, 2021
High in-situ stress can limit the generation of rock fractures induced by blasting, which usually shows different states of rock fragmentation with those under low-stress conditions.
Xiaohan Li, Zhe-ming Zhu, Meng Wang, Duanying Wan, Lei Zhou, Ruifeng Liu   +5 more
semanticscholar   +1 more source

Air-blast and ground shockwave parameters, shallow underground blasting, on the ground and buried shallow underground blast-resistant shelters: A review

International Journal of Protective Structures, 2021
Weak political systems and poor governance in certain developing countries are found to have a war-like environment where structures are being targeted by blasts and bombs.
S. Anas, M. Alam, M. Umair
semanticscholar   +1 more source

Prediction of ground vibration induced by blasting operations through the use of the Bayesian Network and random forest models

Soil Dynamics and Earthquake Engineering, 2020
The present study aims to compare the performance of two machine learning techniques that can unveil the relationship between the input and target variables and predict the ground vibration (peak particle velocity, PPV) due to quarry blasting.
Jian Zhou, P. Asteris, D. J. Armaghani, B. Pham   +3 more
semanticscholar   +1 more source

Model experimental study on the effects of in situ stresses on pre-splitting blasting damage and strain development

, 2021
In the process of drilling and blasting in deep underground engineering, in situ stress is usually considered as an essential factor for blasting parameter design. To explore the effect of the in situ stress value and direction on pre-splitting blasting (
Li-yun Yang, Aiyun Yang, Siyu Chen, Shizheng Fang, Chen Huang, Huanzhen Xie   +5 more
semanticscholar   +1 more source

Investigating the mechanism of rock fracturing induced by high-pressure gas blasting with a hybrid continuum-discontinuum method

Computers and geotechnics, 2021
To study the rock-breaking mechanism resulting from high-pressure gas blasting, a hybrid continuum-discontinuum method considering the actual breakage of rocks was presented in this study.
W. Ben, Haibo Li, Z. Shao, Shi-hai Chen, Xiaofeng Li   +4 more
semanticscholar   +1 more source

Blast Injuries

Acta Radiologica, 1988
Blast injuries cause specific lesions with which the radiologist should be familiar. The mechanism of injury and the pathophysiology of this form of trauma are discussed. The clinical effects as well as the radiologic observations in various organs are presented. Most dramatic effects are observed in the thorax.
O B, Adler, A, Rosenberger
openaire   +2 more sources

Theoretical and numerical investigation of deep-hole cut blasting based on cavity cutting and fragment throwing

Tunnelling and Underground Space Technology, 2021
Cut blasting is the key of single-face blasting in underground rock engineering, which determines the success or failure of the blasting process. Traditional cut blasting is not suitable for deep-hole blasting engineering because of the difficulty of ...
Zhang Hao, Tingchun Li, Yiteng Du, Qi-hu Zhu, Xiantang Zhang   +4 more
semanticscholar   +1 more source