Risks Assessment Expending AHP-GA Method: A Novel Approach for Hazard Factors of Barapukuria Coal Mine in Bangladesh.Risks Assessment Expending AHP-GA Method: A Novel Approach for Hazard Factors of Barapukuria Coal Mine in Bangladesh.

Mining industry's working milieu is influenced by various hazardous factors. Perhaps in Bangladesh, future working environments will be insecure for the lack of congenial methodology to reduce risk factors of Barapukuria Coal Mine (BCM). Many inconsistencies were found in multi-criteria judgment and resolution problems in mine. The study objective is to amplify with Analytic Hierarchy Process (AHP)-Genetic Algorithm (GA) method for solving accidental factors identifying problems in the BCM field. Our promised tactics is for risk appraisement at BCM. We are wary of the methodology for risk factors to identify and secure a thriving way for working with better ambience in mining by including year wise accidental data from 2002 to 2012. Our evaluation framework was described with a widespread three layer that analyzed step by step by Microsoft excel and MATLAB software. The weight value and accuracy of the assigned matrix was calculated for the mentioned AHP-GA method. To enhance efficiency, this paper pretends to resolve a multi-decisional puzzle with intimate connection of AHP-GA from the advantage of MCDM, and minimizes the gap of combining GA with AHP for practical application. AHP-GA technique will perform in a fruitful way both on qualitative and quantitative multi-assessment complex solutions in coal mines. In this study, we have elaborated the application of AHP-GA procedure which surrounds the value to enlarge the better decision local option on mining areas for BCM. Finally, we come into view the BCM safety level is inclined to "General" by our proposed novel setting.

Soil Contamination Assessment by Trace Elements in Barapukuria Coal Mine Region, Bangladesh

Coal mining areas in Bangladesh are exposing to extreme environmental problems due to the mobilization of heavy metals in the surrounding region. To assess the persisting risk, several soil samples were collected from the nearby coal mine areas. The amount of pollution of heavy metal has been calculated to determine the extent of the contamination. Soil contamination assessment was carried out using pollution evaluation indices such as heavy metal pollution index (HPI), the degree of contamination (Cd), and the contamination factor (CF). The concentration of S, As, Ba and, F exceeded the maximum concentration level in some soil samples. The HPI and the Cd yield similar results. The CF shows strong similarities with the Cd and gives a better evaluation of pollution levels. HPI indicates that about 71.42% of samples exceed the high level. Cd and CF show that about 71.42% sample is highly contaminated by trace element and 14.28% sample is highly contaminated by S, Cl, and F. Based on radioactive element analysis about 14.28% samples show medium contamination level. The findings of this research help us to assess the level of soil contamination and the extent of environmental and health concerns in the region of the Barapukuria coal mine.

A Study on Deformation of Land and Loss of Vegetation Due to Mining at Barapukuria Coal Mine

Barapukuria coal mine is the biggest coal mine in Bangladesh discovered in 1985. It has lease area around 10.53 square km with the total reserve of 390 million tons. Though it fulfils the major portion of demand of coal in Bangladesh nevertheless it has severe effect like deformation of topography of that surface area while extracting coal from mine and causes severe impact on vegetation on the coal mine vicinity. This is due to some poor design of extraction process. The intent and purpose of this research is to make an analysis of the influence of topography changes due to mining and impact on vegetation. To assess the effect of mining on vegetation and topography remote sensing technology, GIS and Landsat image were used. Our study confirms the deformation of topography and loss of vegetation due to mining. If this mining process continue it will create adverse effect on environment. The result is expected to be a reference for various parties to perform activities related to the mining of coal in Barapukuria coal mine.

Study of Engineering Behavior of Coal Mine Waste Generated From Barapukuria Coal Mine As Road Subgrade

This study is focused on the possibility of using coal mine wastes as a replacement for conventional road subgrades. Various laboratory tests carried out on fresh coal mine waste collected from Barapukuria Coal Mine (Located at Dinajpur, Bangladesh) showed that, it behaves like low strength soil with 0.71% CBR and 18.74% plasticity index which is unsuitable for engineering utilization. Later, fine sand and cement were added with the waste. Three different cement proportion were tested (5%, 8% and 10% of total weight) keeping a constant sand proportion (20% of total weight). The unconfined compression strength and CBR value were found to increase greatly. Analyzing the test results, waste mixed with 8% cement and 20% sand showing 27.44% CBR and 9.09% plasticity index was found to be effective for using as subgrade. Chemical analysis of waste detected the presence of lead as 0.026 ppm which may cause groundwater contamination.