Design method of freezing rock wall under high water pressure

Abstract：Firstly put forward the problems existing in the thickness designation of freezing wall and shaft lining related to high water pressure of porous rock of shaft sinking with Artificial Ground Freezing Method（SS-AGF）;Then,reviewed the theory development of thickness designing of freezing wall,accordingly,the reasons of two layers of the shaft lining were revealed in mechanical principal and the basic problems concerned necessary were presented;Third,the character of loader in ＂Baoshen＂ formula were studied and its complicated relationship with the outer loader of freezing wall,further the factors such as the dimension and rigidity of freezing wall and lining influencing the direct loader on freezing wall were analyzed,etc.;Fourth,the conditions of the elastic design of freezing wall using ＂Lame＂ and ＂Baoshen＂ formula were thoroughly discussed;Fifth,the shaft depth limits of elastic design for freezing wall were quantificationally studied;Finally,the allowance compressive strengths,the ratio of shear modulus of freezing wall and enclosure rock related to the thickness designing of freezing wall were discussed