Home
021-58386189
Menu
· This study is mainly focused to predict a critical strata movement value for safety of the bord and pillar method of mining perticularly depillaring Introduction Coal deposits at shallow depth are depleting rapidly because of growing production rate in the opencast mining In view of this the issues relating to the success of underground coal mining in India have gained paramount
Get Price
· In India about 98% of underground output of coal is obtained by Board and Pillar method and barely about 2% by longwall methods The other countries where Board and Pillar method predominates are Australia The USA and South Africa 5 Page 4 FIGURE3 BOARD AND PILLAR PANEL LAYOUT Classification of Bord and Pillar Mining System 1 Develop
Get Price
· This study is mainly focused to predict a critical strata movement value for safety of the bord and pillar method of mining perticularly depillaring Introduction Coal deposits at shallow depth are depleting rapidly because of growing production rate in the opencast mining In view of this the issues relating to the success of underground coal mining in India have gained paramount
Get Price
Large room and pillar stone mining fundamentals The value per ton of ore for large room and pillar stone mines is typically low therefore productivity must be high Typical face areas are m wide x m high 40 ft wide by 25 ft high with m 14 ft pulled with each blast Figure 1 This equates to over 1 000 tons of stone per
Get Price
Figure 1 Graphical representation of the bord and pillar mining method with 9 bords and sequencing of belt installation The Southern African Institute of Mining and Metallurgy Platinum 2012 4 Figure 2 Graphical representation of mechanized breast mining method utilizing 8 production panels Currently a large portion of the underground operations production is being mined conventionally and
Get Price
· Of the total output of coal from underground mines more than 90% of coal is obtained by the bord and pillar method the predominant method of mining followed in India and the rest is mined by the longwall mining method The Indian coal mining industry has witnessed a persistent decline in underground coal production over the years with more emphasis on opencast mining The trend of
Get Price
Underground semi mechanised bord and pillar mining is the most viable alternative to meet the growing energy demand for sustainable development of India Bord and pillar is a cyclic mining method
Get Price
· In India % of the total fatal injuries in coal sectors are due to roof fall in bord and pillar method of workings This paper attempts to predict the severities of roof fall accidents based on some major contributing parameters using the binary logistic regression model In total 128 roof fall accidents for the last few years from five underground coal mines in India having bord and
Get Price
Ideal conditions for room and pillar mining are regular flat orebodies with large horizontal extent and competent ore and waste rock however these are by no means limiting criteria Room and pillar is considered one of the most versatile mining methods To illustrate its versatility room and pillar has been used in deposits with rock strengths ranging from 30 to 350 MPa depths ranging from
Get Price
· This study is mainly focused to predict a critical strata movement value for safety of the bord and pillar method of mining perticularly depillaring Introduction Coal deposits at shallow depth are depleting rapidly because of growing production rate in the opencast mining In view of this the issues relating to the success of underground coal mining in India have gained paramount
Get Price
Mining can be done in two ways underground and open cast Underground mining broadly consists of two types a Long wall method and b Bord Pillar method The latter is predominantly followed in India compared to the former Most of the coal mining is done by the Bord and Pillars Method Objective
Get Price
depllaring in coal mines 1 Name Akhilesh Kumar Gupta Roll NO 114mn0275 Year 2015 2016 2 INTRODUCTION Bord and Pillar method of mining is one of the oldest are left as support and output is nearly 20% after development pillars are being extracted which follows different procedure according to the geographical condition And extraction of pillars inc
Get Price
· In India % of the total fatal injuries in coal sectors are due to roof fall in bord and pillar method of workings This paper attempts to predict the severities of roof fall accidents based on some major contributing parameters using the binary logistic regression model In total 128 roof fall accidents for the last few years from five underground coal mines in India having bord and
Get PriceFigure 1 Graphical representation of the bord and pillar mining method with 9 bords and sequencing of belt installation The Southern African Institute of Mining and Metallurgy Platinum 2012 4 Figure 2 Graphical representation of mechanized breast mining method utilizing 8 production panels Currently a large portion of the underground operations production is being mined conventionally and
Get Price
· Room Bord and Pillar Layout Figure shows Room and Pillar Mining 6 Underground mining room and pillar mining of thick seams Benching Different approaches allow either the top or bottom part of the seam to be mined out first Note the hangingwall is above the mining cavity and the footwall is below it Figure shows Room
Get Price
The bord and pillar mining methodology currently used at Ensham is also planned for the Project Area with access through the existing underground workings Figure 1 The majority of the proposed mining layout in Zone 1 is located below the flood plain of the Nogoa River Figure 1 Zone 2 and Zone 3 are located both below the flood plain and outside the flood plain Figure 1 Project
Get Price
· In India underground coal production is mostly dependent upon the conventional bord and pillar room and pillar method of mining although the overall output per man shift OMS through this method is generally not more than 1 ton in any of the mines Large areas in all the subsidiaries of Coal India Limited and even in Singarani Coal Companies Limited India have been developed via bord
Get Price
· Bord and pillar extraction nbsp is the older of the methods and nbsp The word nbsp bord is not a misspelling of nbsp board but a mining
Get Price
A prediction model developed by Central Mining Research Institute India for evaluation of fire risk rating of underground coal mine panels in bord and pillar working in respect of their proneness to spontaneous heating is presented in this paper The concept used in this model is innovative and user friendly This model may be applied to a panel where extraction is carried out using any of
Get Price
Bord AND PILLAR MINING METHOD comprises of two phases development and depillaring Pillars are formed by driving a series of narrow roads headings or galleries in the seam Percentage of extraction during development is nearly 20% in deep mines and 35% in shallow mines
Get Price
About US
Products
Case
Project
Contact
Online Chat
Sales Hotline