Construction practice of anchoring for high-steep slope under complicated geological condition and discussion on some technical control criteria
Taking the anchoring construction of the high-steep slope with the height of 550 m located at the left bank of Jinping Hydropower Station I as a study case,an anchoring construction practice with the anchor cable of super-long and high bearing capacity is made,and then the study and summary are made on the aspects such as the holing technology for the anchor cable,the installing process of the anchoring cable bunch,the injecting(grouting) technique,the pulling method,etc..Afterwards,the monitoring data are analyzed and evaluated,and then a set of technologies and methods for the anchoring construction of high-steep slope under complicated geological condition is established.Furthermore,the relevant technical problems from the construction are also discussed in accordance with the related anchoring construction specifications and the technical control standards for anchor and shotcrete support concerned within the field of the hydropower development;which can provide some references for the similar anchoring construction of high-steep slope.