DOI: 10.11799/ce201806015
Discussion on key technology of freezing construction in deep mine soft rock stratum
CHENG Zhi-bin
ZHANG Bu-jun
Abstract：For the deep shaft soft rock formation freezing technology, we summarize the practice of several vertical shaft freezing projects in the western regions of Inner Mongolia, Shaanxi, Gansu and Ningxia, from the aspects of freezing scheme selection, freezing technical parameter values, freezing and excavation construction control indexes. The key technologies for freezing in soft rock formations are systematically described. The viewpoint that the bottom boundary of the Cretaceous system is used as the freezing control horizon in soft rock formations in the western part of China and the limit-state strength formula for the limited-end high-plasticity body is used to calculate the frozenwall thickness is summarized. Corresponding frozen construction technique points can provide reference for the construction of deep vertical shaft freezing in similar strata.
Keywords：deep vertical shaftweak rock stratumfreezing techniquefrozen wall thickness
Publication Date：2018-01-01
Pages：3( 51-53 )