标题：Research on the mechanism of the floor heave caused by grouting pressure and its numerical simulation
作者：Liu, Rentai ;Li, Shucai ;Zhang, Qingsong ;Han, Weiwei ;Zhang, Xiao
作者机构：[Liu, Rentai ;Li, Shucai ;Zhang, Qingsong ;Han, Weiwei ;Zhang, Xiao ] Geotechnical and Structural Engineering Research Center, Shandong University, Sh 更多
会议名称：44th US Rock Mechanics Symposium and the 5th US/Canada Rock Mechanics Symposium
会议日期：27 June 2010 through 30 June 2010
来源：44th US Rock Mechanics Symposium - 5th US/Canada Rock Mechanics Symposium
关键词：Floor heave; Grouting pressure; Monitoring measurement; Numerical simulation
摘要：In the underground engineering construction, grouting is a common means of the disaster management projects. Grouting can improve the mechanical parameters of surrounding rock and the stress state of surrounding rock. Grouting is benefit for the surrounding rock stability and roadway safety in long term. But the slurry can not have the carrying capacity immediately; the pump pressure will be passed on the surrounding rock. The pump pressure is an additional load, and it is result in a large deformation of the soft rock roadway. Using the composite beam model, the critical value of the grouting pressure leading to floor heave is obtained. By numerical simulation method, the value of the grouting pressure carried by the surrounding rock is calculated. Through theoretical analysis and numerical simulation methods, the limit grouting pressure is determined in Longgu coal mine. By the observation of surrounding rock deformation in Longgu coal mine, the law of the rock deformation under grouting pressure is analyzed. This research is a good reference for similar projects. Copyright 2010 ARMA, American Rock Mechanics Association.