摘要
通过对立井井壁破裂原因的分析及危险点处应力状态的研究 ,以消除导致井壁破裂的因素为目标提出了对尚未破土动工井筒防止井壁破裂的措施 ,以预防井壁破裂为宗旨提出了对现存未破裂井壁的防范方法 ,以恢复井筒的使用性能为目的 。
Through the analysis of the fracture reason and of the stress state of the danger point of the shaft wall,the measure used to prevent the fracture of shaft that does not break earth yet is advanced in order to eliminate the factor that results in shaft fracture.The measure used to prevent the fracture of shaft that does not break is put forward in order to prevent the fracture of shaft.The measure of used to control the fracture of shaft wall is given in order to resume the use of shaft.
