http://www.daily-sun.com/print_news.php?path=data_files/2010/11/27/50&cat_id=3&menu_id=25&news_type_id=1&index=1 For an appropriate mining method Open-pit coal mining generates multi-dimensional problems. The most important of which are drop of groundwater table. Other worldwide recognised hazards from the open-pit mining are acid mine drainage, desertification, replacement of infrastructures, air pollution due to huge amounts of suspended dust particles from the pit area, noise pollution, destruction of valuable agricultural lands, very large holes, steep and unstable high pit slopes which cannot be maintained, may fill with acid-mixed water, and loss of valuable top soil, which is essential for agricultural purposes. Open-pit mining in the Phulbari and Barapukuria coal deposit has been focused for the extensive public attention. In this article, boundary element method (BEM) numerical modelling has been applied to recognise in situ stress state around the proposed open pit mine of the Phulbari coal deposit. The major objective of the present article is to clarify the rock failure (tensional) state around the proposed open-pit excavation and to illustrate the geological and hydro-geological problems linked to the in situ stress state of the surroundings open-pit dimension and how long distance the groundwater table would be affected due to the mine dewatering. Several modelling pertaining to hydro-geological aspect of the Phulbari proposed open-pit mining have been prepared by AEC�s promoters. However, these models are vague to the scientific and general societies of the country. In the present study, sophisticated mining software has been applied to simulate the open-pit dimension of the Phulbari coal deposit and its surrounding rock failure conditions. The present numerical simulation reveals that high tensional failure (see figure) within rock strata would be extended up to 27 km to the both sides from the centre of the open pit. The lateral tensional effect within the strata would be around 54 km. This means that the natural porosity and permeability within the rock strata of regional water-bearing formation would be damaged and groundwater inflow would be increased rapidly with the progress of mining activities. More clearly, continuous dewatering would cause rapid drawdown of regional water table and instability of the regional aquifer system. The drawdown of groundwater table due to open-pit dewatering process creates a serious problem in Germany. For example, Lusatia, one of the Germany�s driest regions, faces one of the most serious water scarcity problems in German history. Dewatering from open pit mine, which involves pumping of 6 tons of groundwater for each ton of lignite extracted, led to a serious drop in the groundwater table in the region. An area of more than 80,000 ha is affected by open-cast lignite-mining activities in Lusatia. Above that an area of 2,100 square km is affected by gro
In a recent media interview Dr Tawfique Elahi Chowdhury, Energy Advisor to PM, talked about open pit mining from a section of Barapukuria mine. If that is the case what is stopping government from reviewing the huge technical documents lying with government in support of open pit mining of Phulabaria coal? Dr Elahi would say about water modelling being done by his local experts over the past two to three years. It is a way of wasting time and working for an Energy Mafia Syndicate making Bangladesh a hostage in their hands. Government will soon find that they will be up against insurmountable challenges with import of primary fuel both in terms of technical and financial constraints. They will be forced to fall back on own coal but by that time enough damage will have been be done to national vision of achieving power for all at affordable cost by 2021. So the suggestion is, get those sets of technical documents that have been reviewed by international experts and make those available to the government and go ahead with mining our own coal at Phulbari and Barapukuria adopting the preferred method of mining. Off course, all perceived and conceived impacts management process must be in place and affected communities must be properly compensated and rehabilitated.r
Well deciding to GET IN, has been a very HARD call for me as I wanted to make sure this wasn't a p&d. I think I will PUMP some money in here tomorrow trying to get in at a decent price as I think this has the potential to EXPLODE! :)
http://www.energybangla.com/2014/07/16/21255.html#.U8a0gJRX-uY Four secretaries have been transferred and given new postings in the latest administrative reshuffle. The Ministry of Public Administration issued a gazette notification in this regard on Tuesday. It says Posts and Telecommunications Secretary Abu Bakar Siddique has been made secretary of Power, Energy and Mineral Resources Ministry while Anti Corruption Commission (ACC) Secretary Mohammad Foyejur Rahman Chowdhury made Posts and Telecommunications Secretary. Besides, Additional Secretaries of Economic Relations Division (ERD) Arastu Khan and Shafiqul Alam have been made acting members of the Planning Commission. Meanwhile, Directorate General of Department of Women Affairs Ashraf Hossain has been made acting member of the Privatisation Commission.
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