By analyzing the characteristics and the production mechanism of rock burstthat goes with abnormal gas emission in deep coal seams,the essential method of eliminatingabnormal gas emission by eliminating the occurrence...By analyzing the characteristics and the production mechanism of rock burstthat goes with abnormal gas emission in deep coal seams,the essential method of eliminatingabnormal gas emission by eliminating the occurrence of rock burst or depressingthe magnitude of rock burst was considered.The No.237 working face was selected asthe typical working face contacting gas in deep mining;aimed at this working face,a systemof rock burst prediction and control for coal seam contacting gas in deep mining wasestablished.This system includes three parts:① regional prediction of rock burst hazardbefore mining,② local prediction of rock burst hazard during mining,and ③ rock burstcontrol.展开更多
Nigeria is richly endowed with crude oil and natural gas deposits, which are the country＇s main source of energy and foreign exchange earnings. These deposits are concentrated at the Niger Delta region which has attr...Nigeria is richly endowed with crude oil and natural gas deposits, which are the country＇s main source of energy and foreign exchange earnings. These deposits are concentrated at the Niger Delta region which has attracted the presence of multinational oil/gas companies to the area. This paper analyses the impact of oil and gas development on the rich biological diversity of the region and its consequences on the development of the region and the nation at large. The paper further reviews the abject poverty of the oil/gas producing communities whose source of livelihoods, fisheries resources, agricultural soils/farmlands, forests, clean water, fresh air and housing are being destroyed due to poor energy resource management. The magnitude of destruction and frustration is reflected in unending conflict and insecurity in the region leading to many shut-in productions which pose a governance challenge as the country＇s economy and development is heavily dependent on oil and gas production.展开更多
This technical paper considers the vessels used today in the sea and marine industries to provide somewhere to stay for people in semi-permanent accommodation at sea： the floating hotels. These structures have mainly...This technical paper considers the vessels used today in the sea and marine industries to provide somewhere to stay for people in semi-permanent accommodation at sea： the floating hotels. These structures have mainly been developed to hold the activities of the offshore oil and gas industry, although in coastal areas they are widely used for several purposes, mainly as commercial hotels, but with a quite different philosophy of use. The purpose of this paper is to show how the term flotel is used to denominate very different craft that, while serving the same purpose, have a totally different configuration according to the place where they are located： in protected waters in coastal areas, in benign and shallow waters of the open ocean or in the harsh environments of deep waters, etc..展开更多
基金Supported by the National Natural Science Foundation(Instrument)of China(50427401)the National High Technology Research and Development Program of China(2006AA06Z119)+1 种基金the National Key Technology R&D Program in 11th Five Years Plan of China(2007BA29B01)the New Century Excellent Talents in University(NCET-06-0477)
文摘By analyzing the characteristics and the production mechanism of rock burstthat goes with abnormal gas emission in deep coal seams,the essential method of eliminatingabnormal gas emission by eliminating the occurrence of rock burst or depressingthe magnitude of rock burst was considered.The No.237 working face was selected asthe typical working face contacting gas in deep mining;aimed at this working face,a systemof rock burst prediction and control for coal seam contacting gas in deep mining wasestablished.This system includes three parts:① regional prediction of rock burst hazardbefore mining,② local prediction of rock burst hazard during mining,and ③ rock burstcontrol.
文摘Nigeria is richly endowed with crude oil and natural gas deposits, which are the country＇s main source of energy and foreign exchange earnings. These deposits are concentrated at the Niger Delta region which has attracted the presence of multinational oil/gas companies to the area. This paper analyses the impact of oil and gas development on the rich biological diversity of the region and its consequences on the development of the region and the nation at large. The paper further reviews the abject poverty of the oil/gas producing communities whose source of livelihoods, fisheries resources, agricultural soils/farmlands, forests, clean water, fresh air and housing are being destroyed due to poor energy resource management. The magnitude of destruction and frustration is reflected in unending conflict and insecurity in the region leading to many shut-in productions which pose a governance challenge as the country＇s economy and development is heavily dependent on oil and gas production.
文摘This technical paper considers the vessels used today in the sea and marine industries to provide somewhere to stay for people in semi-permanent accommodation at sea： the floating hotels. These structures have mainly been developed to hold the activities of the offshore oil and gas industry, although in coastal areas they are widely used for several purposes, mainly as commercial hotels, but with a quite different philosophy of use. The purpose of this paper is to show how the term flotel is used to denominate very different craft that, while serving the same purpose, have a totally different configuration according to the place where they are located： in protected waters in coastal areas, in benign and shallow waters of the open ocean or in the harsh environments of deep waters, etc..
