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Study on Characteristics and Sources of Crystal Components of Leakage Water in the Loess Tunnel
（1 Lanzhou West Works Maintenance Division, China Railway Lanzhou Group Co., Ltd., Lanzhou 730030; 2 School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070）
Abstract Aiming at the crystallization disease of leakage water occurred in the Shangzhuang tunnel in Lanzhou ar? ea, a statistical analysis on the characteristics of the leakage water crystal is conducted, the chemical components of leakage water and crystal are measured, and the source of crystal components is discriminated by means of analytic hierarchy process (AHP). The calculation results show that: the main components of the leakage water crystals of the loess tunnel are Ca2+ and Mg2+ ions in limestone, dolomite and brucite; CO32- mainly comes from the dissolved CO2 in groundwater.
Abstract：
Aiming at the crystallization disease of leakage water occurred in the Shangzhuang tunnel in Lanzhou ar? ea, a statistical analysis on the characteristics of the leakage water crystal is conducted, the chemical components of leakage water and crystal are measured, and the source of crystal components is discriminated by means of analytic hierarchy process (AHP). The calculation results show that: the main components of the leakage water crystals of the loess tunnel are Ca2+ and Mg2+ ions in limestone, dolomite and brucite; CO32- mainly comes from the dissolved CO2 in groundwater.
WU Yuzhe1 LI Guanpeng2 JIA Qiqi1 QI Hongyun1 LI Dewu2
.Study on Characteristics and Sources of Crystal Components of Leakage Water in the Loess Tunnel[J] MODERN TUNNELLING TECHNOLOGY, 2020,V57(6): 154-159
2020, Vol. 57 