立井冻结防片帮孔优化设计与实践  

Optimization Design and Practice of Anti-rib Spalling Holes by Freezing Method

作　　者：张海骄[1] 宋海清[2] 王成博[1] Zhang Hai-jiao;Song Hai-qing;Wang Cheng-bo(Zhangji Coal Mine,Huainan Mining Group,Anhui Huainan 232000;Anhui University of Science&Technology,Anhui Huainan 232000)

机构地区：[1]淮南矿业集团张集煤矿,安徽淮南232000 [2]安徽理工大学,安徽淮南232000

出　　处：《山东煤炭科技》2019年第11期45-47,共3页Shandong Coal Science and Technology

摘　　要：立井冻结法施工中防片帮孔的圈径和孔间距设计直接影响到掘砌时的安全和掘砌速度。运用计算的方法,根据单管冻结管冻土扩展半径计算公式及冻土入荒最佳距离,理论计算出防片帮孔最佳开孔间距,冻结施工时能够很好地控制冻土入荒径距离和井帮温度,做到井筒掘砌时多挖"糖心",安全快速施工。In shaft construction by adopting freezing method, the design of the circle diameter and spacing of anti-rib spalling holes directly affects the safety and speed of excavation. According to the formula for calculating the expansion radius of frozen soil of single freezing pipe and the optimum distance of waste frozen soil, the optimal spacing of the holes is calculated theoretically. The distance of waste frozen soil and the temperature of shaft wall can be well controlled during the construction by means of freezing method, so that safe and fast construction can be achieved.

关 键 词：立井 冻结 设计 

分 类 号：TD262[矿业工程—矿井建设]