نتایج جستجو برای: underground development

تعداد نتایج: 1428517  

2007
Joshua A. Marshall Tim D. Barfoot

This paper describes the design, implementation, and field testing of an infrastructureless system for autonomous tramming (or hauling) of a center-articulated underground mining vehicle. Described is the development of a fast, reliable , and robust " autotramming " technology that does not require the installation of fixed infrastructure throughout the mine.

2012
Gleb Chudinov

Development experience of ore traffic and extraction simulation system in underground part of potash mines is reviewed. Distinctive features of suggested simulation model (combine complex extraction, using conveyor transport and transfer point in continuous ore traffic simulation) are represented. Implementation features of bundled software ”Рудопоток” are considered.

2017
Adamu Murtala Zungeru Mmoloki Mangwala Joseph Chuma

Wireless Underground Sensor Networks (WUSNs) are active and emerging area of application of Wireless Sensor Networks (WSNs), whereby sensor nodes are located under the ground environment. The communication between the nodes is done underground, with the aim of sensing events to transmit the sensed events to the sink, which is normally in the terrestrial environment. The most challenging issue i...

2013
Sun Jichao Wang Guangqian

Studies about sediment erosion were mainly concentrated on the river channel sediment, the terrestrial sediment, and the underground sediment. The transport process of underground sediment is studied in the paper. The concept of the flush potential sediment is founded. The transport equation with stable saturated seepage is set up, and the relations between the flush potential sediment and wate...

Journal: :The European respiratory journal 2001
B Ulvestad M B Lund B Bakke P G Djupesland J Kongerud J Boe

Exposure to gases and dust may induce airway inflammation. It was hypothesized that heavy construction workers who had been exposed to dust and gases in underground construction work for 1 yr, would have early signs of upper and lower airway inflammation, as compared to outdoor workers. A study group comprising 29 nonsmoking underground concrete workers (mean +/- SD age 44+/-12 yrs), and a refe...

Journal: :Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 2013

Journal: : 2023

This mini-review is devoted to the analysis of current state relatively rarely used underground bio-mining natural minerals. On basis this analysis, it substantiated that bacterial leaching technology has no alternative for environmentally safe and economically break-even mining ore-bearing rocks off -balance metal-bearing formations are difficult access, or unprofitable traditional methods. It...

2015
Shuai Li Hubo Cai Vineet R. Kamat

a r t i c l e i n f o Keywords: GPR GPS GIS 3D underground utility mapping Uncertainty modeling Uncertainty-aware visualization Accuracy assessment Underground utility lines being struck is a long-standing problem worldwide, causing public service disruptions, project delays, cost overruns, property damage, injuries, and fatalities that cost billions of dollars each year. Utility strikes are at...

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