| The surrounding control of soft rock and roadway maintenance in deep mine is the problem of home and abroad coal urgently needed to solve and soft rock roadway support becomes more difficult with the increase of mining depth. Therefore, it is necessary to study the support technology of soft rock roadway to ensure the normal coal mining. Reliable support programs were established in this paper by comprehensive means of theoretical analysis, numerical simulation and field observation,which had 102 transport in YuanDian 1rst coal mine as the research background. The program was step by step to enhance joint support ways—anchor with spraying first (to pressure deformation)+secondary anchor and grouting (strengthening of rock structure). There was further evidence for the support scheme which could effectively control the deformation of surrounding rock by numerical simulation and field observation and analysis. In order to better control the deformation of the surrounding rock, which could not only provide a theoretical reference to soft rock roadway support in deep mine and a high security to the coal mine production, but also could increase the economic benefits in corresponding and had important significance to technology practice of roadway's support under similar conditions.Figure[47] table[3] references[50]... |
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