نتایج جستجو برای: underground metal mine

تعداد نتایج: 232757  

2009
Zhongmin Pei Zhidong Deng Shuo Xu Xiao Xu

Severe natural conditions and complex terrain make it difficult to apply precise localization in underground mines. In this paper, an anchor-free localization method for mobile targets is proposed based on non-metric multi-dimensional scaling (Multi-dimensional Scaling: MDS) and rank sequence. Firstly, a coal mine wireless sensor network is constructed in underground mines based on the ZigBee t...

2010
Wentao Zhao Rui Hu

For the development of mining industry and its urgent demand for positioning and navigation technology, three new underground mine positioning and navigation systems based on the existing positioning technologies would be investigated and studied in this paper, where Wireless Ethernet-based navigation system as a new navigation system is first used in underground mine. Three types of positionin...

2016
Dirk J. Pons

The Pike River mine (PRM), an underground coal mine in New Zealand (NZ), exploded in 2010. This paper analyses the causes of the disaster, with a particular focus on the systems engineering and organisational contributions. Poor systems-engineering contributed via poorly designed ventilation, use of power-electronics underground, and placement of the main ventilation fan underground. Management...

2008
Bela Abraham Emil Cordoş

The Certej basin is situated in the North of Deva town, in Apuseni Mountains and was an important nonferrous mining region. In present the mining activities were stopped, but the acid mine drainage is still affecting the underground water quality. Acid Mine Drainage takes place where sulphide-bearing material is exposed to oxygen and water. This drainage water is characterized by low pH, high s...

Journal: :Interfaces 2010
Alexandra M. Newman Enrique Rubio Rodrigo Caro Andres Weintraub Kelly Eurek

Applications of operations research to mine planning date back to the 1960s. Since that time, optimization and simulation, in particular, have been applied to both surface and underground mine planning problems, including mine design, longand short-term production scheduling, equipment selection, and dispatching, inter alia. In this paper, we review several decades of such literature with a par...

2012
Chika Yinka-Banjo Antoine Bagula Isaac O. Osunmakinde

The wide adoption of underground mining has contributed immensely to the rapid growth of the countries’ economy, job creation, gross domestic product, fixed capital formation, gross investment and merchandise exports on an enormous global scale. At the same time, the tedious and dangerous nature of underground mining makes it vulnerable to mine accidents and disasters, such as the fall of loose...

Journal: :JNW 2013
Zheng Sun Xuezheng Han Zhufeng Shao

In order to reliably monitor the operating status of one-way aerial ropeways for underground mine and better guarantee the safety of mine personnel, a hierarchical routing protocol based on energy efficiency and chain-type structure is proposed in this paper. Previous studies show that uniform cluster formation can prolong the lifetime of network. So a novel time allocation algorithm based on t...

2012
Tanmoy Maity Mithu Mukherjee

This paper addresses an economical, supple, continuous monitoring system of underground mine workers’ protection and security. A module of MEMS based sensors are used for monitoring underground parameters as per the requirement of the user and automating sequence of measuring data through digital wireless communication system is projected with high precision, soft control and reliability. A mic...

2008
J. Larsson

During the last decade, mining companies and mobile equipment manufacturers have pursued improved efficiency, productivity, and safety in underground mining operations by automating some of the functions of underground vehicles. This paper describes the implementation and successful field testing of a new infrastructureless guidance system for autonomous tramming of centre-articulated undergrou...

2009
Marcus Brazil Peter Grossman David Lee Hyam Rubinstein Doreen Thomas Nicholas Wormald

Optimisation tools which determine the best layout for access and haulage in an underground mine address an important and difficult mine design problem. The complexity of the problem can be compared to the task of optimising the final pit design in an open pit, together with the pit haul roads required. The strategic design of an underground mine layout must address the location of haulage shaf...

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