Study on Electromagnetic Protection Technology of Mine Emergency Communication Command Works

2014 ◽  
Vol 1044-1045 ◽  
pp. 1349-1351
Author(s):  
Xin Min Xu
Keyword(s):  
Mineral Resources ◽  
Wireless Security ◽  
Technology Research ◽  
Emergency Communication ◽  
Mine Scheduling ◽  
Mine Production ◽  
Production Safety ◽  
The Status ◽  
Protection Technology ◽  
Mine Accident

The frequent mine accident makes mineral resources safety become one of the focuses and people's attention was increasingly paid to how to improve the security system in the process of mine exploitation and establish sound emergency communications command works. This paper focuses on the electromagnetic protection technology research of mine emergency communication command works and discuss the application and significance of its electromagnetic protection technology through the analysis of wireless security mine scheduling and emergency communication system and ,according to the status of mine production safety, pointed out developed trends of wireless security scheduling and electromagnetic protection technology in mine emergency communication command works.

scholarly journals Prediction of the First Weighting from the Working Face Roof in a Coal Mine Based on a GA-BP Neural Network

2019 ◽  
Vol 9 (19) ◽  
pp. 4159
Author(s):  
Tan ◽  
Yang ◽  
Chang ◽  
Zhao
Keyword(s):  
Neural Network ◽  
Coal Mine ◽  
Bp Neural Network ◽  
Prediction Models ◽  
Initial Pressure ◽  
Mining Area ◽  
Mine Pressure ◽  
Mine Production ◽  
Production Safety ◽  
Matlab Programming

The accidents caused by roof pressure seriously restrict the improvement of mines and threaten production safety. At present, most coal mine pressure forecasting methods still rely on expert experience and engineering analogies. Artificial neural network prediction technology has been widely used in coal mines. This new approach can predict the surface pressure on the roof, which is of great significance in coal mine production safety. In this paper, the mining pressure mechanism of coal seam roofs is summarized and studied, and 60 sets of initial pressure data from multiple working surfaces in the Datong mining area are collected for gray correlation analysis. Finally, 12 parameters are selected as the input parameters of the model. Suitable back propagation (BP) and GA(genetic algorithm)-BP initial roof pressure prediction models are established for the Datong mining area and trained with MATLAB programming. By comparing the training results, we found that the optimized GA-BP model has a larger determination coefficient, smaller error, and greater stability. The research shows that the prediction method based on the GA-BP neural network model is relatively reliable and has broad engineering application prospects as an auxiliary decision-making tool for coal mine production safety.

The Status of Marine Mining Worldwide

2009 ◽  
Author(s):  
Charles L. Morgan
Keyword(s):  
Mineral Resources ◽  
Deep Ocean ◽  
Modern Society ◽  
Economic Downturn ◽  
Ferromanganese Crusts ◽  
Playing Field ◽  
The Status ◽  
Offshore Oil Industry ◽  
Deep Seabed Mining ◽  
Sand And Gravel

Metals are fundamental components of modern society worldwide, and, despite the current economic downturn, we know we will be faced with ever increasing demands and ever-shrinking supplies. Efforts to achieve sustainable supplies of minerals must include efforts to expand the supply. About 60% of the ocean surface consists of the ocean floor, so it is reasonable to expect that deep ocean minerals could contribute significantly to the world supply. Human efforts to recover minerals have thus far concentrated almost exclusively on land-based resources, so it is reasonable to postulate that marine minerals might offer better prospects for future mineral supplies than land prospects. Currently, we know of at least six separate categories of marine minerals: 1. Aggegrate sand and gravel deposits; 2. Placer deposits of relatively high value minerals (gold, diamonds, tin, etc) hosted in aggegrates; 3. Biogenically derived phosphate deposits; 4. Sediment-hosted (manganese nodules) and hard-rock hosted (ferromanganese crusts) ferromanganese oxide deposits; 5. Sediment-hosted methane hydrate deposits; and 6. Hydrothermally derived sulfide deposits of copper, gold, nickel, zinc, and other metals. Thanks primarily to the engineering developments made by the offshore oil industry and the computer-science advances that have revolutionized much of modern society, the technology is in place for most of the tasks of deep seabed mining. The objective here is not to provide a general status update regarding marine minerals technology, but simply to demonstrate, using the best example available to date (the Nautilus Minerals venture in the Territorial Waters of Papua New Guinea) that the technology is in place and ready to go. Development of marine minerals has both the curse and blessing of taking place in the ocean. Since the 1970’s and before, the marine environment has taken on a public aura reserved more commonly for religious beliefs. This aura poses substantial obstacles to any marine development efforts. At the same time, a basic advantage of marine mineral developments is that nobody lives there. Thus, marine mining activities will not conflict with most normal human activities. Marine mining proposals should be subjected to thorough impact assessment analysis, but it is also critical that policymakers take steps to provide a level playing field for marine developments that encourages objective comparisons with alternative land-based proposals for supplying needed mineral resources. Governments should foster reasonable access to the marine mineral resources under their jurisdiction while also supporting incentive policies and related research programs.

A Research Based on the Deep Self-Balanced Hydraulic Pump

2011 ◽  
Vol 305 ◽  
pp. 411-415
Author(s):  
Bao De Jing ◽  
Bin Bin Lv ◽  
Zeng Jun Pan ◽  
Long Yi ◽  
Zhu Ge Gang ◽  
...  
Keyword(s):  
Mathematical Model ◽  
Sea Water ◽  
Model Simulation ◽  
Water Pump ◽  
Technology Research ◽  
Hydraulic Pump ◽  
Pump Housing ◽  
The Status ◽  
Water Hydraulic ◽  
Simulation Results

The article will give information about the status of sea water pump technology research, carry out the analysis of the water pump slipper, piston and water pump housing and other key parts of hydraulic pumps, and finally make some optimization and innovation. In addition, there will be a mathematical model simulation for four major friction of the hydraulic pump sea water through the MatLab . The simulation results of the design of water hydraulic pump has a certain significance.

Design of Intelligent Supervision System for Production Safety in Mine Areas

2011 ◽  
Vol 219-220 ◽  
pp. 1347-1353
Author(s):  
Cheng Zhuang ◽  
Chang Qing Fu ◽  
Si Ming Zhuang
Keyword(s):  
Coal Mines ◽  
Dual Function ◽  
Monitoring And Control ◽  
Monitoring And Control System ◽  
Supervision System ◽  
Mine Area ◽  
Technical Management ◽  
Production Safety ◽  
The Status ◽  
Chinese Coal

Based on investigation into available monitoring and control system technology at home and abroad, this paper presents extensive surveys and thorough analysis of the safety supervision system being employed in Chinese coal mines. Taking a mine area as example and according to years of working experience in technical management of coal mines, the author combines the status quo of the mine area and existing problems in the supervision system for production safety in Chinese coal mines, and provides a design proposal of supervision system for production safety in coal mines, where a digitalized supervision system for production safety in coal mines serving dual-function of supervising production safety and commanding accident rescue is designed.

THE STATUS OF HYDROCARBON EXPLORATION, OFFSHORE NORTHEASTERN AUSTRALIA AND THE GULF OF PAPUA

1978 ◽  
Vol 18 (1) ◽  
pp. 77
Author(s):  
A. Sabitay
Keyword(s):  
Great Barrier Reef ◽  
Mineral Resources ◽  
Hydrocarbon Exploration ◽  
Royal Commission ◽  
Barrier Reef ◽  
Hydrocarbon Production ◽  
Offshore Area ◽  
The Status ◽  
Gulf Of Papua ◽  
Made In

Since 1969, geophysical exploration and drilling in the offshore area of northeastern Australia has been at a virtual standstill. In the Gulf of Papua, progress recommenced in late 1973 when Papua New Guinea gained control of its mineral resources. Exploration has been curtailed by the formation of a Royal Commission to study possible adverse effects on the Great Barrier Reef due to oil exploration. The findings of the Royal Commission were delivered on 30th October 1974. Generally considered, the Commission concluded that risks of hydrocarbon spills were small enough and hazards from such spills not detrimental enough (except for dispersants and sinking agents) that drilling in selected areas should take place after improving safety precautions.The Great Barrier Reef National Park Act came into effect on 20th June 1975. Provision is made in the act for allowing or forbidding the recovery of minerals in particular zones of the Great Barrier Reef region. To date neither the zones nor the regulations governing exploration under the Act have been proclaimed.Nine distinct areas of sedimentation having hydrocarbon potential are recognized in the area. These are, in order of interest: the Gulf of Papua, the Maryborough and Capricorn Basins, the Halifax, Laura and Hillsborough Basins, the Queensland Plateau, the Marion Plateau and, lastly the Styx Basin. In these areas, potential hydrocarbon production is indicated by Pasca No. A1 and Uramu No. 1A in the Gulf of Papua, and onshore at Barikewa No. 1, Lehi No. 1, Kuru No. 1, Bwata No. 1 and Puri No. 1. One of three exploration wells in the onshore Maryborough Basin had significant gas shows.

Issues to develop tertiary education in line with regional development

2021 ◽  
pp. 50-57
Author(s):  
Tsedev-Ish Otgonkhuu ◽  
Myagmarsuren Altanbagana
Keyword(s):  
Regional Development ◽  
Tertiary Education ◽  
Mineral Resources ◽  
Small Population ◽  
Education Sector ◽  
Capital City ◽  
Full Time ◽  
Ministry Of Education ◽  
The Status ◽  
New Entrants

For Mongolia, which has a small population, a large territory, and abundant natural, agricultural, and mineral resources, regional development of the education sector, especially tertiary education, which is significant for population settlement, is an important issue for regional development. The purpose of this study is to optimize spatial planning of the tertiary education sector in line with regional development. This research used statistical and spatial analyzing methods to achieve the sets of research objectives. The key indicators of the tertiary education sector included a number of universities, institutes, and colleges, students, full-time teachers, new entrants, and graduates from general educational schools and the relevant datasets were collected from the National Statistical Office (NSO) and the Ministry of Education and Science (MES) covering the period from 1990 to 2019. As can be seen from research results, 92.5 per cent of tertiary educational institutions, 88.9 per cent of all employees working in the sector, 92.6 per cent of all students, and 92.2 per cent of new entrants are all located in Ulaanbaatar alone, which means that Mongolia’s tertiary education sector is overcrowded in the Capital city only. This study suggests that it is necessary to support the establishment of vocational and tertiary education institutions, research centers, institutes, and their branches outside of the capital city by first reviewing the status and functions of national and aimag-level cities, which are in line with regional and local unique and economic priorities.

A Variable Weight Function Model in Geological Variables Function Research

2013 ◽  
Vol 785-786 ◽  
pp. 1423-1429
Author(s):  
Wen Bo Liu ◽  
Lai Jun Liu
Keyword(s):  
Weight Function ◽  
Mineral Resources ◽  
Process Variable ◽  
Mathematics Model ◽  
Constant Weight ◽  
Connection Degree ◽  
State Variable ◽  
Variable Weight ◽  
The Status ◽  
Constant Coefficients

In mineral resources prediction and other research of geological variables, stability exactness of quantitative models concern modeling conditions, geological variables from model and the status of the variable. In traditional geological modeling process, variable support is measured under some contrains weight and this kind of weight is characterized by constant coefficients. Constant weight[1] has some limitations due to structuredness and dependency of variable. For overcoming the inflexibility of constant weight, this paper proposes geological variable mathematics model basedd state variable vector. We revise existing form of state variable weight and provide logarithm state variable vector as measurement level of geological variable weight coefficients. According to 1:200000 scale geochemistry measured data from Baishan area, we calculate the samples unit connection degree based on exponent and logarithm state variable vector and compare the connection degree based on constant weight. The connection degree sorting has the similarity as a whole among them, but there is the obvious difference locally. We can conclude that geological variable weight function based on state variable vector is more flexible and fine.

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