Results 81 to 90 of about 10,570,902 (260)

Study on the composite fracture characteristics of filling and reinforcing cracked rock mass after high temperature damage

Deep Underground Science and Engineering, EarlyView.
Cement infill shares compressive and shear stresses during loading, while interfacial friction hinders crack propagation and reduces stress concentration, improving the rock's load‐bearing capacity. Failure modes vary with crack inclination. Unfilled specimens show four modes.
Shihao Yuan, Qiang Sun, Jianjun Hu, Liwei Zhang, Jishi Geng   +4 more
wiley   +1 more source

Arsenic Environmental Geochemistry, Mineralogy, and Microbiology

, 2014
Environmental Mineralogy and Bio-Geochemistry of Arsenic provides a comprehensive understanding of arsenic geochemistry in the near-surface ...
Nordstrom, Kirk, Bowell, Robert, Alpers, Charles, Jamieson, Heather, Majzlan, Juraj   +4 more
core  

Modeling and experimental validation of bolt–grout bond–slip behavior for deep underground excavation support

Deep Underground Science and Engineering, EarlyView.
A novel shear‐lag model, validated by pull‐out tests, incorporates a constant bond stress stage to predict the complete load–displacement response of grouted rock bolts, providing a new tool for optimizing anchorage length and material toughness in deep underground engineering. Abstract The stability of rock masses in deep underground excavations, such
Wenhui Bian, Xiaohui He, Kexue Wang, Yufei Wu, Guoxin Wang, Shaochen Zhang, Jun Yang   +6 more
wiley   +1 more source

Process Mineralogy: An essential booster of the Circular Economy [PDF]

, 2017
In order to develop efficient processes for the recovery of metals from both our primary mines and our urban mines, we will need to innovate in process mineralogy.
Pirard, Eric
core   +1 more source

Analytical stress solution framework for lined compressed air energy storage chambers and its application to safe burial depth determination and supporting effectiveness evaluation

Deep Underground Science and Engineering, EarlyView.
An analytical framework delivers a closed‐form stress solution for lined compressed air energy storage chambers, enabling the determination of the minimum safe burial depth. The solution quantitatively evaluates lining support effectiveness, offering a reliable tool for chamber design and optimization.
Zeyuan Sun, Cheng Zhao, Jinquan Xing, Qinyuan Luo   +3 more
wiley   +1 more source

Study on Mineralogical Characteristics of Peru Copper-Sulphur Ore Dressing Process by X-ray Diffraction and Scanning Electron Microscope

Yankuang ceshi, 2019
BACKGROUND The main recovered minerals of copper sulfur ores in Peru were copper minerals and sulfur minerals. Due to the complexity of the embedded copper minerals, the superfine granularity of copper minerals and their close relationship with various ...
ZENG Guang-sheng, OU Le-ming
doaj   +1 more source

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

Deep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu, Wei Qiao, Xianggang Cheng, Xiangsheng Meng, Peichao Feng   +4 more
wiley   +1 more source

Process Mineralogy of Solid Waste Minerals from Lijiagou Spodumene Mine and Occurrence State of Lithium

Kuangchan zonghe liyong
This is an article in the field of process mineralogy. Lithium is an important rare metal, which is widely used in metallurgy, machinery, chemical industry, ceramics, glass building materials and other industries, and becomes an important part of new ...
Yanqing CHEN, Junfeng WU, Lin CHEN, Panpan WANG   +3 more
doaj   +1 more source

Study on the Inlay Characteristics and Occurrences of Yunnan Porphyry Polymetallic Gold Deposits

Yankuang ceshi, 2018
BACKGROUND In the Western Yunnan, there is an abundance of low-grade gold resources with uneven grain size, complicated ore structure and incomplete separation. Using the traditional mineralogical analysis process, it is difficult to achieve accurate and
LIU Rong-xin, ZHU Kun, XIE Hai-yun, ZHANG Peng-fei, DING Chao, WU Ji-zong, TONG Xiong   +6 more
doaj   +1 more source

Shock wave propagation characteristics of aluminum‐containing explosive in corrugated steel‐lined tunnel

Deep Underground Science and Engineering, EarlyView.
Aluminum‐enhanced afterburning renders AE explosives more hazardous than conventional ones. Corrugated steel linings reduce far‐field AE blast overpressure by ~50% through wave reflection and dissipation. The developed model accurately predicts peak pressure (<10% error) and arrival time (<3% error), supporting protective design.
Zhen Wang, Jiayu Peng, Hujun Li, Yuguo Ji, Shuobiao Li, Guokai Zhang   +5 more
wiley   +1 more source