Results 71 to 80 of about 8,180 (295)

Strength weakening characteristic of rock burst structural planes

工程科学学报, 2018
Prediction and prevention of rock burst in project is difficult because of its paroxysm and sudden destructiveness. Determining how to predict the time, place, and intensity of rock burst is one of the main engineering problems that must be solved via ...
DU Yan, ZHENG Xiao-ting, XIE Mo-wen, JIANG Yu-jing, LIU Qiu-qiang   +4 more
doaj   +1 more source

Damage Evaluation for Rock Burst Proneness of Deep Hard Rock under Triaxial Cyclic Loading

, 2018
High stress and strong excavation disturbance are the main causes of dynamic disasters, rock burst in deep hard rocks, and are more frequent and violent than those in shallow, which seriously restricts the deep mining.
Chenghan Zhang, Shuang You, Zijian Zhang, Hongguang Ji   +3 more
core   +1 more source

Coherence‐Gated Wrapped‐Phase InSAR With Matrix‐Based Uncertainty Diagnostics for Burial‐Mound Hotspot Ranking (Sicily, Italy)

Archaeological Prospection, EarlyView.
ABSTRACT Burial mounds are key elements of Mediterranean funerary landscapes, but in intensively cultivated coastal plains their low‐relief expression is easily obscured by ploughing, levelling and rapidly changing surface conditions, making single‐date observations unreliable.
Salvatore Polverino, Hourakhsh Ahmadnia, Rokhsaneh Rahbarianyazd Ahmadnia   +2 more
wiley   +1 more source

Study on initial fracture distribution and bearing damage evolution mechanism of disturbed coal samples in oil-rich coal deposits in western China

Frontiers in Materials
The simultaneous formation of stress transfer and structural optimization in deep underground engineering strongly influences the occurrence and severity of dynamic disasters, especially under complex stress–structure conditions.
Yawu Shao, Yawu Shao, Yawu Shao, Yawu Shao, Lei Zhu, Lei Zhu, Lei Zhu, Chang Xin, Gang Han, Gang Han, Gang Han, Haifei Lin, Hu Liu, Hu Liu, Hu Liu, Jiahao Xie, Jiahao Xie, Jiahao Xie, Jiahao Xie, Mingming Sun, Mingming Sun, Mingming Sun, Jin Wang, Jin Wang, Jin Wang   +24 more
doaj   +1 more source

Rock Burst in the Kan'etsu Tunnel

Journal of the Japan Society of Engineering Geology, 1981
In excavation of the Kan'etsu tunnel, rock burst occurred expectedly. Especially for about 1 year since July 1980, many broken pieces of rock had sprung out frequently. Rock burst should be classified into sometypes, such as springing of rocks, cracks on face without springing of rocks, and only breakdown noises onface or in bed rock.
openaire   +2 more sources

‘Where are the adults?’: Troubling child‐activism and children's political participation

British Educational Research Journal, EarlyView.
Abstract Children's political participation is a well‐established theme in childhood studies. In this article we offer an original account of child activism that takes into account the entangled and emergent aspect of children as activists. We begin with a historical and a conceptual review, noting the importance of mid‐20th century developments such ...
Sharon Hunter, Claire Cassidy
wiley   +1 more source

Leaving children behind for cross‐border education: Unveiling the emotional agency of international post‐graduate student mothers

British Educational Research Journal, EarlyView.
Abstract Despite growing interest in the internationalisation of higher education, the experiences of international student parents, particularly international student mothers, remain largely marginalised in research and policy. This paper examines the emotional agency of international student mothers who leave their children behind in their home ...
Anh Ngoc Quynh Phan, Ha Ngan Ngo, Chloe Le   +2 more
wiley   +1 more source

Simulation study on the influence of different influencing factors on the amount of drilling cuttings

Meikuang Anquan
The drilling cuttings method is an important means to determine and predict the risk of coal and rock dynamic disasters such as rock burst. Accurately obtaining the variation law of drilling cuttings is one of the keys to understanding the stress state ...
Peng GU, Hao WANG, Zhiying CUI, Yujiang CUI, Yafei CHENG   +4 more
doaj   +1 more source

New method for introducing gradient stress into rock-burst prediction

Yantu gongcheng xuebao, 2020
During the excavation of underground projects, the tangential stress in the surrounding rock near the cave wall is distributed in a gradient because of the disturbance of excavation unloading in the deep rock mass.
HE Jia-qi 1, LIN Man-qing 1, LIU Xi-qi 2, ZHANG Lan 1, ZHANG Dian-ji 1, XIONG Wen 2, PENG Ya-li 3
doaj   +1 more source

Marine silicon for biomedical sustainability

BMEMat, EarlyView.
Schematic illustrating marine silicon for biomedical engineering. Abstract Despite momentous divergence from oceanic origin, human beings and marine organisms exhibit elemental homology through silicon utilization. Notably, silicon serves as a critical constituent in multiple biomedical processes.
Yahui Han, Zhibo Yang, Wei Xia, Chengtie Wu   +3 more
wiley   +1 more source