Results 101 to 110 of about 105,325 (306)

Nonsilting transport characteristics of coal slurry in a deep underground fluidization conveying pipeline under the action of a guide vane swirler

Deep Underground Science and Engineering, EarlyView.
Aiming at the scientific frontiers of in situ fluidized mining of deep resources, a deep coal fluidized pipeline lifting system based on hydraulic conveying has been proposed. To solve the issue of particle sedimentation of large particles in horizontal connection sections, a solution involving the installation of guide vane‐type swirlers in the ...
Jiusheng Bao, Shaodi Zhao, Yan Yin, Zhongbin Wang, Shuai Liu, Shirong Ge   +5 more
wiley   +1 more source

Process Mineralogy of Flotation Products of a Copper-molybdenum Ore in Jiama, Xizang

Kuangchan zonghe liyong
The process mineralogy was studied on hornstone and skarn copper-molybdenum ores and the copper and molybdenum concentrates was obtained by separating flotationin Jiama, Xizang. The research shows that the hornstone copper-molybdenum ore contains Cu 0.38%
Jinming GUO, Hongying YANG, Jing MENG, Linlin TONG, Zhenan JIN, Guobao CHEN, Qin ZHANG   +6 more
doaj   +1 more source

Weathering microenvironments on feldspar surfaces: implications for understanding fluid-mineral reactions in soils [PDF]

, 2008
The mechanisms by which coatings develop on weathered grain surfaces, and their potential impact on rates of fluid-mineral interaction, have been investigated by examining feldspars from a 1.1 ky old soil in the Glen Feshie chronosequence, Scottish ...
Blum, C. L. Smith, D. J. Brown, M. E. Hodson, M. Mackenzie, M. R. Lee, Smith, Velbel, Zhu   +8 more
core   +2 more sources

Numerical investigation on the influence of mesoscopic deformation on contact area and hydraulic aperture to fracture seepage

Deep Underground Science and Engineering, EarlyView.
Fluid flow through a single fracture is commonly described by the cubic law. However, deviations from this model are expected because natural fracture surfaces are rough and in contact with each other in discrete regions. In this study, the interactions between fracture closure, contact area, and hydraulic characterization of mesoscopic‐scale rough ...
Chenghao Han, Yuanlin Bai, Weijie Zhang, Jicheng Zhang, Hongfa Ma, Weiye Li   +5 more
wiley   +1 more source

Experimental Study on Flotation of a Micro-fine Arsenopyrite-type Gold Ore in Central Asia

Kuangchan zonghe liyong
Against the backdrop of increasing global gold demand and the depletion of easily treatable gold resources, the development of refractory gold ores has become increasingly important.
Wenpu ZHANG, Xiaohui WANG, Weilong WU, Kunxi HUANG, Kaile ZHAO, Zhen WANG   +5 more
doaj   +1 more source

Comparative study on mineral dissemination characteristics of phosphate ores by X-ray micro computed tomography and BGRIMM Process Mineralogy Analysis. [PDF]

Sci Rep, 2022
Yang J, Qiu Y.
europepmc   +1 more source

Real‐time monitoring of tunnel structures using digital twin and artificial intelligence: A short overview

Deep Underground Science and Engineering, EarlyView.
How artificial intelligence (AI) and digital twin (DT) technologies are revolutionizing tunnel surveillance, offering proactive maintenance strategies and enhanced safety protocols. It explores AI's analytical power and DT's virtual replicas of infrastructure, emphasizing their role in optimizing maintenance and safety in tunnel management.
Mohammad Afrazi, Danial Jahed Armaghani, Hossein Afrazi, Hadi Fattahi, Pijush Samui   +4 more
wiley   +1 more source

Study on fracture parameter calibration and failure characteristics of rock with hole and crack

Deep Underground Science and Engineering, EarlyView.
The SIF and plastic zone equations for a single hole and crack have been derived. The model's failure state leads to the identification of four types of cracks. The plastic zone increases with increased brittleness and decreased crack length. Abstract Cracks within the surrounding rock of roadways significantly affect their stability and failure ...
Shaochi Peng, Wensong Wang
wiley   +1 more source

Pliocene Te Aute limestones, New Zealand: Expanding concepts for cool-water shelf carbonates [PDF]

, 2003
Acceptance of a spectrum of warm- through cold-water shallow-marine carbonate facies has become of fundamental importance for correctly interpreting the origin and significance of all ancient platform limestones.
Al‐Aasam I. S., Beu A. G., Boreen T. D., Brand U., Brand U., Caron V., Chave K. E., Cole E. R., de Caen R. F. B., de Caen R. F. B., Francis D. A., Haywick D. W. N., Haywick D. W. N., Hood S. D., James N. P., Kamp P. J. J., Lewis K. B., Lohmann K. C., Marshall J. F., McIntyre A., Nelson C. S., Nelson C. S., Scoffin T. P., Scudeler Baccelle L. S., Smith A. M., Summerhayes C. P., Veizer J., Winefield P. R.   +27 more
core   +2 more sources

Review and prospects of shear test of bolted rock joints

Deep Underground Science and Engineering, EarlyView.
The laboratory shear test equipment, test method, and numerical simulation of bolted rock joints were summarized. The shortcomings and limitations of the current research were analyzed, and the research prospects were proposed. Abstract Rock bolting is a critical approach in geotechnical engineering for supporting weak rocks.
Shulin Ren, Fan Yang, Manchao He, Yong Yuan, Zhigang Tao   +4 more
wiley   +1 more source