The pushing through of the idea to destroy the historical town of Most and to build a modem town of the same name nearby, as well as the carrying out of this idea, took place in Northern Bohemia between 1960 and 1980....The pushing through of the idea to destroy the historical town of Most and to build a modem town of the same name nearby, as well as the carrying out of this idea, took place in Northern Bohemia between 1960 and 1980. The immediate cause and chief argument for implementing the whole project was the fact that the old town was located on large supplies of lignite （brown coal）. On the basis of the archival research of this ＂great experiment＂, substantial theses and questions can be formulated. Primarily, the justification of the destruction of a Medieval town and a construction of a new urbane centre was dominated （rather than by communist utopia） by economic and technocratic thought. It was the logics of quantitative calculation, and financial gains and losses, which enforced the plan and shaped the practice of destruction and construction. In this context, the role of the humanistic socialist discourse of justice and good life has to be inquired. This traditional thought was used to back up the technocratic decision as well as to articulate intellectual critique of the whole project. It is especially this ambivalent relationship between the two modernist discourses （the technocratic and humanistic thought）, which constitutes the core of this paper.展开更多
The fully mechanized caving coal mining under the railway in mine area will result in difficulty maintenance of railway because of great distortion and subsidence speed of terrene and railway. If the subsidence foreca...The fully mechanized caving coal mining under the railway in mine area will result in difficulty maintenance of railway because of great distortion and subsidence speed of terrene and railway. If the subsidence forecasting is incorrect and maintenance measure is not suitable in the preceding and the process of mining, the normal operation of the railway in mine area will not be ensured and perhaps the safety accident will be resulted. The railway subsidence forecasting and maintenance system for fully mechanized caving coal face are studied and developed in this connection. Based on the accurate subsidence forecasting of the terrene and railway, the maintenance measure for track and switch turnout in railway is put forward in this system.展开更多
Focused upon the dynamic changing regularity and tendency of overburden movement and bed separation developing during the strip mining and stoping under rail- ways were simulated by ANSYS model.The results show that m...Focused upon the dynamic changing regularity and tendency of overburden movement and bed separation developing during the strip mining and stoping under rail- ways were simulated by ANSYS model.The results show that movement and rheology developing of key strata is one of the main reasons to cause surface subsidence and to further induce deformation of surface railways.It provids a basis for taking efficient meas- ures to control the deformation of surface railways.展开更多
A fully-mechanized coal mining (FMCM) technology capable of filling up the goaf with wastes (including solid wastes) is described. Industrial tests have proved that by using this technology not only can waste be re-us...A fully-mechanized coal mining (FMCM) technology capable of filling up the goaf with wastes (including solid wastes) is described. Industrial tests have proved that by using this technology not only can waste be re-used but also coal resources can be exploited with a higher recovery rate without removing buildings located over the working faces. Two special devices, a hydraulic support and a scraper conveyor, run side-by-side on the same working face to simultaneously realize mining and filling. These are described in detail. The tests allow analysis of rock pressure and ground subsidence when backfilling techniques are employed. These values are compared to those from mining without using backfilling techniques, under the same geological conditions. The concept of equivalent mining height is proposed based on theoretical analysis of rock pressure and ground subsidence. The upper limits of the rock pressure and ground subsidence can be estimated in backfilling mining using this concept along with traditional engineering formulae.展开更多
This paper discussed the necessity of establishing a computer network in a mining railway transport management system. The network structure and the system security design, associated with the real development conditi...This paper discussed the necessity of establishing a computer network in a mining railway transport management system. The network structure and the system security design, associated with the real development condition of a mining area, were brought forward, and the system evaluation was given.展开更多
基金This article originated within the postdoc project P410-12-P596 ＂Velky, experiment socialisticke moderny＂ （The Great Experiment in Socialist Modernity） supported by the Czech Science Foundation （Grantova agentura Ceske republiky）.
文摘The pushing through of the idea to destroy the historical town of Most and to build a modem town of the same name nearby, as well as the carrying out of this idea, took place in Northern Bohemia between 1960 and 1980. The immediate cause and chief argument for implementing the whole project was the fact that the old town was located on large supplies of lignite （brown coal）. On the basis of the archival research of this ＂great experiment＂, substantial theses and questions can be formulated. Primarily, the justification of the destruction of a Medieval town and a construction of a new urbane centre was dominated （rather than by communist utopia） by economic and technocratic thought. It was the logics of quantitative calculation, and financial gains and losses, which enforced the plan and shaped the practice of destruction and construction. In this context, the role of the humanistic socialist discourse of justice and good life has to be inquired. This traditional thought was used to back up the technocratic decision as well as to articulate intellectual critique of the whole project. It is especially this ambivalent relationship between the two modernist discourses （the technocratic and humanistic thought）, which constitutes the core of this paper.
文摘The fully mechanized caving coal mining under the railway in mine area will result in difficulty maintenance of railway because of great distortion and subsidence speed of terrene and railway. If the subsidence forecasting is incorrect and maintenance measure is not suitable in the preceding and the process of mining, the normal operation of the railway in mine area will not be ensured and perhaps the safety accident will be resulted. The railway subsidence forecasting and maintenance system for fully mechanized caving coal face are studied and developed in this connection. Based on the accurate subsidence forecasting of the terrene and railway, the maintenance measure for track and switch turnout in railway is put forward in this system.
基金the National Natural Science Funds Committee(50174035)
文摘Focused upon the dynamic changing regularity and tendency of overburden movement and bed separation developing during the strip mining and stoping under rail- ways were simulated by ANSYS model.The results show that movement and rheology developing of key strata is one of the main reasons to cause surface subsidence and to further induce deformation of surface railways.It provids a basis for taking efficient meas- ures to control the deformation of surface railways.
基金supports for this work provided by Na-tional basic research program of China (No. 2007CB209400)the National Natural Science Foundation of China (No. 50834004)+1 种基金the National Natural Science Foundation of China (No. 50574090) SR Foundation of China University of Mining & Technology (No. 50634050)
文摘A fully-mechanized coal mining (FMCM) technology capable of filling up the goaf with wastes (including solid wastes) is described. Industrial tests have proved that by using this technology not only can waste be re-used but also coal resources can be exploited with a higher recovery rate without removing buildings located over the working faces. Two special devices, a hydraulic support and a scraper conveyor, run side-by-side on the same working face to simultaneously realize mining and filling. These are described in detail. The tests allow analysis of rock pressure and ground subsidence when backfilling techniques are employed. These values are compared to those from mining without using backfilling techniques, under the same geological conditions. The concept of equivalent mining height is proposed based on theoretical analysis of rock pressure and ground subsidence. The upper limits of the rock pressure and ground subsidence can be estimated in backfilling mining using this concept along with traditional engineering formulae.
文摘This paper discussed the necessity of establishing a computer network in a mining railway transport management system. The network structure and the system security design, associated with the real development condition of a mining area, were brought forward, and the system evaluation was given.
