This paper gives a brief review of the development of shaft sinking by artificial ground freezing since 1949 when new China was founded. Several shaft freezing
Based on study of the influence of main roof fracture on ground pressure,this paper considered the immediate roof as a semi-infinite long beam on a Winkler elas
This paper concentrates on the research of plaster-bonded moulding material with coal mine waste as its major filler and its process. Having made a careful inve
A cross-pit system (CPS) could combine the excavation of coal and the reclamation of land together, thus it has been widely used in many countries. Based on a f
Based on the statistical data of 26 outburst prone coal seams in China, this paper presents the relationship among the threshold gas pressure in coal and gas ou
On the basis of analyzing the influencing factors and harmfulness of stray current, and discussing the existing problems of monitoring and prevention system for
This paper discribes the importance and necessity of the study on the data structures for displaying the mining field using the interactive technology in open p