Wet sprayed concrete for supporting purposes during the drive, in situ concrete for the up to 3 m thick Base and for lining the vault.
掘进过程中的支护采用湿喷混凝土，3米厚的基底和穹拱衬砌采用浇注混凝土。
Study on material for special sprayed concrete has been made for the purpose of improvement of sprayed concrete quality and expanding its application.
为提高喷混凝土的质量和拓宽用途，进行了特种喷混凝土材料的试验研究。
Study on material for special sprayed concrete has been made for the purpose of improvement of sprayed concrete quality and expanding its application.
为提高喷混凝土的质量和拓宽用途，进行了特种喷混凝土材料的试验研究。
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