methods used in coal mine safty based x bee

Safety Monitoring System for Coal Mines (CO Gas) using X

28/01/2013· In the kit wireless coal mine safety (http://wwwkitsguru/technologybasedprojects/XBEEbasedprojects/wirelesscoalminesafety) , safety is an importa

作者: KitsGuru

Commonly used mining techniques to extract coal | IEA

25/01/2018· Surface mining and deep underground mining are the two main methods of mining coal Depth, density, and thickness of the coal seam are the factors that are taken into account while selecting the mining method for coal extraction However, many coals extracted by using these two methods need washing in a coal preparation plant Surface mining: The mining technique is used when the coal

Mine safety: Seven ways to make mines safer and more

发布日期: 26/09/2018

Coal Types, Formation and Methods of Mining epcamr

Most underground coal is mined by the room and pillar method, where by rooms are cut into the coal bed leaving a series of pillars, or columns of coal, to help support the mine roof and control the flow of air Generally, rooms are 2,000 feet wide and the pillars up to 300 feet wide At least 60 feet of coal was left between an underground mine and the surface, if not the surface had a higher

Application of the Entropy Weight and TOPSIS Method in

01/01/2011· In this paper, a comprehensive evaluation model of coal mine safety is established by used of the entropy weight and TOPSIS, then applied to evaluate safety conditions of four coal mines in order to improve the level of safety management and ensure safe production of coal mines 2 Determination of evaluation index system and indexes’ weights 21 Principles Safety evaluation of coal

Coal Mine Safety System Using Wireless Sensor Network

Coal Mine Safety System Using Wireless Sensor Network M S Sudha1 (Xbee) USB Interfacing Board is used to interface Zigbee wireless module with computer systems This board is International Journal of Research in Engineering, Science and Management Volume3, Issue5, May2020 wwwijresm | ISSN (Online): 25815792 740 PC to PC or laptop, PC to mechanical assembly or

Robot based Wireless Monitoring and Safety System for

Download Citation | On Oct 25, 2016, Sachin M Ledange and others published Robot based Wireless Monitoring and Safety System for Underground Coal Mines using ZigBee | Find, read and cite all the

Design of monitoring system for coal mine safety

PDF | On Jul 1, 2013, KM Dange and others published Design of monitoring system for coal mine safety based on MSP430 | Find, read and cite all the research you need on ResearchGate

Application of the Entropy Weight and TOPSIS Method

01/01/2011· In this paper, a comprehensive evaluation model of coal mine safety is established by used of the entropy weight and TOPSIS, then applied to evaluate safety conditions of four coal mines in order to improve the level of safety management and ensure safe production of coal mines 2 Determination of evaluation index system and indexes’ weights 21 Principles Safety evaluation of coal

Need for Mine Safety: An ICT based solution to make mines

making mines safer We propose a method that has been practically implemented which can enhance mine safety enormously It is based on integration of wireless sensor network with an external network through a gateway 2 Background Imagine the world without coal, copper, uranium, ironore, gold and aluminum We would have been in the era of

Coal mining Choosing a mining method | Britannica

Choosing a mining method The various methods of mining a coal seam can be classified under two headings, surface mining and underground mining Surface and underground coal mining are broad activities that incorporate numerous variations in equipment and methods, and the choice of which method to use in extracting a coal seam depends on many technological, economic, and social factors

Surface Mining Methods and Equipment

appropriate mining method is selected based on technical, economic, and environmentally accountable considerations The first step in selecting the most appropriate mining method is to compare the economic efficiency of extraction of the deposit by surface and underground mining methods This section reviews surface mining methods and practices 11 Classification of Surface Mining Methods

Towards Safety from Toxic Gases in Underground Mines

04/02/2013· Shao, Q L, Zhang, Z X, Zhang, Z C Research on safety monitoring system of mine based on ad hoc technology 2 Proceedings of the International Conference on Information Management, Innovation Management and Industrial Engineering (ICIII '08) December 2008 450 453 2s20 101109/ICIII200887 Google Scholar | Crossref

Application of Comprehensive Geophysical Prospecting

Furthermore, the openpit mining method in coal mining, with its advantages of full utilization of resources, high production efficiency, low cost, and good working conditions, is taking up an increasing proportion in China’s coal mining [6, 7] However, for a long time, many small coal mines in China have adopted roomandpillar mining methods, leaving many goafs when they are closed The

US GAO Mine Safety: Reports and Key Studies Support

17/08/2012· What GAO Found Our evaluation of the reports MSHA used to support its proposal and the key scientific studies on which the reports were based shows that they support the conclusion that lowering the PEL from 20 mg/m3 to 10 mg/m 3 would reduce miners risk of disease The reports and key studies concluded that miners cumulative exposure to coal mine dust at the current PEL over

Coal Mine Safety System Using Wireless Sensor Network

Coal Mine Safety System Using Wireless Sensor Network M S Sudha1 (Xbee) USB Interfacing Board is used to interface Zigbee wireless module with computer systems This board is International Journal of Research in Engineering, Science and Management Volume3, Issue5, May2020 wwwijresm | ISSN (Online): 25815792 740 PC to PC or laptop, PC to mechanical assembly or

SCADA SYSTEM FOR WORKERS SAFETY IN COAL MINES USING

that can be implementation of safety jacket for coal mine workers, this jacket is equipped with methane gas, fire, smoke, temperature, and heart beat sensor and emergency key This sensors sense the data and which is transmitted to master node through zigbee The WSN sensor is connected at both end for transmission and reception of data The threshold value is set at master end, if sensor

Application of the Entropy Weight and TOPSIS Method

01/01/2011· In this paper, a comprehensive evaluation model of coal mine safety is established by used of the entropy weight and TOPSIS, then applied to evaluate safety conditions of four coal mines in order to improve the level of safety management and ensure safe production of coal mines 2 Determination of evaluation index system and indexes’ weights 21 Principles Safety evaluation of coal

Managing Gas on Open Cut Coal Mines | Resources Safety

11/08/2020· The Queensland Coal Mining Safety and Health Regulation (Section 142 Flammable or toxic gas), prescribes that: A surface mine’s safety and health management system must provide for protecting persons from risks from flammable or toxic gas at the mine Identifying and monitoring parts of the mine where the gas might accumulate and create a hazard; Fixing flammable gas concentration

Being realistic about coal mine rehabilitation in

23/12/2020· In East Kalimantan, the most intensively mined province in Indonesia, mine pits expand across more than 5 million hectares (12 million acres) of land already zoned for coal concessions

Key technologies and engineering practices for softrock

01/11/2020· Based on the geological engineering conditions of the new horizontal first mining area of Luling Coal Mine in Huaibei, China, the impacts of different mining parameters of the softrock protective seam on the pressurerelief effect of the protected coal seam were analyzed through numerical simulation The unit stress of the protected coal seam, which was less than half of the primary rock

MINE SAFETY: Reports and Key Studies Support the

The passage of the Federal Coal Mine Health and Safety Act of 1969 (Coal Act) 9 established the first comprehensive respirable dust standard for coal mines, setting the exposure limit at 20 mg/m310 Following the passage of the Coal Act, the prevalence of CWP among underground coal miners examined in NIOSH’s Coal Workers’ Xray

Towards Safety from Toxic Gases in Underground Mines

04/02/2013· Shao, Q L, Zhang, Z X, Zhang, Z C Research on safety monitoring system of mine based on ad hoc technology 2 Proceedings of the International Conference on Information Management, Innovation Management and Industrial Engineering (ICIII '08) December 2008 450 453 2s20 101109/ICIII200887 Google Scholar | Crossref

Mining health and safety: 7 common risks to protect

06/03/2020· Mine workers should be trained on the hazards of overexposure to coal mine dust Respiratory protection should be used when dust control protection is being installed, maintained or repaired Medical screening and surveillance is also essential 2 Noise Mines are noisy places, with the constant of drilling and heavy machinery, and the potential for hearing damage is quite serious “It can

(PDF) Energy efficient clustering protocol for early

Study on the coal mine personn el position system based on wireless body sensor ACKNOWLEDGEMENT networks Symposium on Medical Devices and Biosensors [6] H S Yuan 2008 The research of energy efficient MAC protocols We would like to express our immense gratitude to our in gas monitoring system of mine International Symposium on Information Science and Engineering