Research on Inverting FEM Model of Temperature Field of Shaft Lining Based on Short Step Process of Shaft Sinking over 1 km Deeper
ZHOU Xiao-min
LIU Peng
GUAN Hua-dong
Abstract：The paper review the situation and development of temperature inspection of shaft lining con‐struction ,and the research harvests of temperature field of cement hydration of mass concrete in hy‐dropower dam and building area. Using the composite power function ,the FEM model of numeral cal‐culation of temperature rising of shaft lining concrete. Upon the tests results of temperature measured in site of concrete placing in the depth of over 1 200 m in Cixi auxiliary shaft ,model parameter had been revising ,obtain the time parameter of cement hydrate m=0.239 85 ,and the total hydraulic heat amount is 420 kJ/kg. According to the FEM model obtained ,the w hole thermal process of hardening and formation of lining concrete had been revealed ,w hich show s that the highest temperature had been taken place in the middle of shaft lining at the 34.5 after placing of concrete mixer. The temperature distributed in the parabola shape of pilling up ,and as the time goes by ,the temperature curve flat and tend to approximate the logarithmic curve like the conduct temperature curve in the semi‐infinite field with a hole in side.
Keywords：mass concreteshaft liningtemperature rising under heat insulationtemperature
Publication Date：2015-11-16
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 1-6 )