scholarly journals A Solution to Ensure Ventilation when Expanding the Area of Cam Thanh Underground Coal Mine, Ha Long Coal Company, Vietnam

2021 ◽  
Vol 1 (2) ◽  
Author(s):  
Cao Khai NGUYEN ◽  
Van Thinh NGUYEN ◽  
Phi Hung NGUYEN ◽  
Van Quang NGUYEN
Keyword(s):  
Coal Mine ◽  
Underground Mining ◽  
Ventilation System ◽  
Coal Mines ◽  
Working Environment ◽  
Production Plan ◽  
Mining System ◽  
Underground Coal Mine ◽  
Mine Environment ◽  
Production Plans

In the process of underground mining, the mining system changes for various reasons. One ofthe main reasons is changes in the mining production plans, especially the scales and outputs. Nowadays,coal mines in Vietnam have been expanding in width and depth, and so have the mines’ ventilationsystems. Consequently, there will be changes in the alteration of the structure of the design ventilationsystem, which reduces the effectiveness of the ventilation and does not meet the main objective of mineventilation, directly affect the safety of the working environment in the mine. Therefore, it is necessary toresearch the improvement of the ventilation system with the development and specific conditions ofunderground coal mines in Vietnam, improving the efficiency of the ventilation work and assuring thesafety of the mine environment. Cam Thanh coal mine, Ha Long coal company, Vietnam, is the case studyfor this research. The article considers the plan of increases the mining output by more than 1.5 times,propose solutions to improve the ventilation system accordingly, helping the company proactivelyimplement the production plan, ensure the working environment's safety, and reduce the costs of mineventilation.

scholarly journals Methane Content Estimation in DuongHuy Coal Mine

2018 ◽  
Vol 35 ◽  
pp. 01005 ◽  
Author(s):  
Van Thinh Nguyen ◽  
Waldemar Mijał ◽  
Vu Chi Dang ◽  
Thi Tuyet Mai Nguyen
Keyword(s):  
Experimental Data ◽  
Coal Mining ◽  
Coal Mine ◽  
Coal Mines ◽  
Methane Content ◽  
Underground Coal Mining ◽  
Coal Seams ◽  
Underground Coal Mine ◽  
Different Depths ◽  
Quang Ninh

Methane hazard has always been considered for underground coal mining as it can lead to methane explosion. In Quang Ninh province, several coal mines such as Mạo Khe coal mine, Khe Cham coal mine, especially Duong Huy mine that have high methane content. Experimental data to examine contents of methane bearing coal seams at different depths are not similar in Duong coal mine. In order to ensure safety, this report has been undertaken to determine a pattern of changing methane contents of coal seams at different exploitation depths in Duong Huy underground coal mine.

Wireless Sensor Network

2017 ◽  
pp. 145-160 ◽  
Author(s):  
Pankaj Kumar Mishra ◽  
Pratik ◽  
Manish Kumar
Keyword(s):  
Wireless Sensor Network ◽  
Radio Frequency ◽  
Sensor Network ◽  
Coal Mine ◽  
Coal Mines ◽  
Wireless Sensor ◽  
Physical Parameters ◽  
Underground Coal Mine ◽  
Rf Signals ◽  
Underground Coal Mines

Wireless Sensor Network (WSN) has an enormous prospective in hazardous areas such as underground coal mines. However, there is a need to ensure safety while installing WSN in underground coal mine as it is hazardous in nature and WSN radiates Radio Frequency (RF) signals which can be an eminent source of ignition. Henceforth when the underground coal mines are equipped with WSN there is a need to set the threshold limits of different physical parameters in order to eradicate such hazards for enabling safety. Therefore, in the present chapter, attempts have been made to assess the required safety for WSN while installing in underground coal mines. In addition, various types of hazards associated with underground coal mines and their consequences are elaborated in details with a glimpse to mitigate them with the use of WSN.

Mining Gassy Coal Seams with a Three-Entry Panel Layout

2012 ◽  
Vol 524-527 ◽  
pp. 613-617
Author(s):  
Jun Hua Xue ◽  
Sheng Xue
Keyword(s):  
Coal Mine ◽  
Methane Concentration ◽  
Ventilation System ◽  
Coal Mines ◽  
Distribution Characteristics ◽  
Coal Seams ◽  
Gas Drainage ◽  
Gas Emissions ◽  
Underground Coal Mines

To address the issue of high gas emissions in mining gassy coal seams in underground coal mines, the concept of a three-entry panel layout with a retained goaf-edge gateroad and a “Y” type ventilation system is introduced in this paper. With the layout and ventilation system, distribution characteristics of methane concentration in the panel goaf is analyzed, technologies of gas drainage with boreholes drilled from the retained goaf-edge gateroad and into stress-relieved overlying and underlying seams are described, and an application case of such layout in a coal mine is also presented in this paper.

scholarly journals Assessment and Quantification of Risks Associated with Small Scale Mining, Khyber Pakhtunkhwa, Pakistan

2020 ◽  
Vol 11 (3) ◽  
pp. 65-69
Author(s):  
Zahid Ur Rehman ◽  
Saira Sherin ◽  
Sajjad Husain ◽  
Noor Muhammad ◽  
Talat Bilal
Keyword(s):  
Coal Mine ◽  
Ventilation System ◽  
Coal Mines ◽  
Health And Safety ◽  
Mining Industry ◽  
Small Scale ◽  
Khyber Pakhtunkhwa ◽  
Data Analyses ◽  
Roof Fall ◽  
One Year

Small scale mining industry is considered more hazardous than other industries worldwide. Large number of workers receive minor and major injuries leading to disabilities or loss of lives due to frequent accidents in mines. Main causes of accidents in mines are fall of roof, improper ventilation system, gases, fires and mine explosions. Beside these hazards, violation of rules and regulations for mine workers are common, which also cause accidents. This paper is focused on issues associated with the health and safety of workers of Cherat Coal Mines (CCM), Abbottabad Coal Mine (ACM) and Abbottabad Soapstone Mine (ASM), Pakistan. The collected data were analyzed with SPSS computer statistics software. The data analyses indicated that the lack of education and violation of safety laws cause accidents in mines. Results show that problems that were rated higher by more than 60% of workers included slide and fall, dust, roof fall and explosive related hazards. In survey more than 50% of the workers admitted the existence of gases, fire and low height mines are common hazards in their workplace. The results also indicated that not only workers but management are also affected by accidents. More than 17% of worker in CCM faced serious accidents up to 3 times during one year. Up to 26% of workers in CCM, 13% in ACM and 15% in ASM suffered accidents for which they had 3 workdays off. It has been concluded that training should be arranged, especially the safety related training on regular basis to reduce the risk of accidents.

Design of Coal Mine Main-Fan Automatic Monitoring System Based on ZigBee

2014 ◽  
Vol 981 ◽  
pp. 501-504
Author(s):  
Hong Quan Zhang ◽  
Zi Hong Zhang
Keyword(s):  
Monitoring System ◽  
Coal Mine ◽  
Automatic Monitoring ◽  
Working Environment ◽  
Monitoring Systems ◽  
Environment Monitoring ◽  
Automatic Monitoring System ◽  
Mine Environment ◽  
Zigbee Technology ◽  
Master Control

The existing wired monitoring systems for coal mine main-fan has some shortcomings such as complex working environment, bad flexibility and low reliability and so on. This paper developed a main-fan automatic monitoring system based on wireless sensor network with ZigBee technology, including monitoring host, sensor node, coordinator node and several data acquisition sensor. In order to meet requirements of coal mine environment monitoring signals, CC2430 is chosen as master control chip. The system achieved functions of automatic monitoring of coal mine main-fan supported by ZigBee technology, which is stable, low power consumption, and has practical value and bright development prospect.

scholarly journals A Tightly Coupled GIS and Spatiotemporal Modeling for Methane Emission Simulation in the Underground Coal Mine System

2019 ◽  
Vol 9 (9) ◽  
pp. 1931 ◽  
Author(s):  
Hui Liu ◽  
Shanjun Mao ◽  
Mei Li ◽  
Shuangyong Wang
Keyword(s):  
Coal Mine ◽  
Mine Safety ◽  
Primary Concern ◽  
Spatiotemporal Modeling ◽  
Tight Coupling ◽  
Mining System ◽  
Underground Coal Mine ◽  
Spatiotemporal Model ◽  
Tightly Coupled ◽  
Cfd Method

Mine safety is of primary concern in the underground coal mining system. At present, there is a lack of an efficient platform to manage the numerical simulation procedure and inherent spatiotemporal data for coal mine disasters. This necessitates the coupling of spatiotemporal model with geographic information system (GIS) in practical application. Here, a novel spatiotemporal model tightly coupled with GIS is presented to improve the model-data integration. Such tight coupling is achieved by developing a lattice Boltzmann method (LBM) based turbulent model with an underlying shared FluentEntity model within the LongRuanGIS platform. The case study and comparison with the traditional computational fluid dynamics (CFD) method demonstrated that the platform is capable and effective in providing functionalities for lattice domain decomposition, simulation, visualization and analyses, as well as improving the computational efficiency. The proposed approach and platform, promising for the disaster prevention, offer a template for future GIS-Model integration and also applicable for other underground coal mine disasters.

scholarly journals Development Of Software To Evaluate Roof Fall Risk In Bord And Pillar Method - Depillaring Phase

2015 ◽  
Vol 61 (2) ◽  
pp. 14-22 ◽  
Author(s):  
Devidas S. Nimaje ◽  
Shiva Sai
Keyword(s):  
Coal Mine ◽  
Fall Risk ◽  
Coal Mines ◽  
Mining Equipment ◽  
Underground Coal Mine ◽  
Company Limited ◽  
Roof Fall ◽  
Considerable Damage

Abstract Roof fall is one of the major problems of the bord and pillar coal mines during the depillaring phase. Roof fall not only causes considerable damage to the mining equipment but also to the miners. To keep in view, development of software is essential for the calculation of roof fall risk to reduce the accidents to a certain extent. In this paper, the software has been developed and tested on seam-2, the main panel of RK-5 underground coal mine, Singareni Collieries Company Limited, India and corresponding roof fall risk was calculated. The best combination of the parameters causing roof fall risk was evaluated to reduce the risk.

Coal Mine Underground Horizontal Extension Transfer Machine

2012 ◽  
Vol 591-593 ◽  
pp. 464-467 ◽  
Author(s):  
Ping Huai Mao ◽  
Bing Zhai ◽  
Li Ding
Keyword(s):  
Coal Mine ◽  
Theoretical Basis ◽  
Coal Mines ◽  
Transmission Efficiency ◽  
Electric Locomotive ◽  
Underground Coal Mine ◽  
Simple Operation ◽  
Loading Method ◽  
Working Principle ◽  
Take All

At present, many coal mines in underground coal loading method are: first we will fill with the first tramcar, and then push the tramcar to another one. Finally, the electric locomotive will take all tramcar away. This method has brought many problems: the demand of roadway widened, the transmission efficiency is low, the transmission of high cost, labor intensive. To resolve these problems, we put forward a kind of application in underground coal mine machinery--horizontal extension transfer machine. This article describes the loader part of the structure and working principle. Green design principles, to provide a theoretical basis for the design of similar machinery. There are many advantages of the structure in the machine, such as compact, simple operation, easy maintenance, low costly and environmental.

Learning Predictive Models for Underground Coal Mine Environment Using Sensor Data

2021 ◽  
Author(s):  
Ali Gul ◽  
Waheed Noor ◽  
Junaid Babar ◽  
Ali Nawaz ◽  
Syed Owais Athar
Keyword(s):  
Coal Mine ◽  
Predictive Models ◽  
Sensor Data ◽  
Underground Coal Mine ◽  
Mine Environment
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