张双楼副井冻结法穿过膨胀性厚黏土层施工技术_万援朝.pdfVIP

35 1 2007 1 万援朝 ( , 22 1131) : 介绍了张双楼矿副井冻结和施工穿过膨胀性厚黏土层所采取的安 技术措施施工方法 厚黏土层掘砌问题及处理措施提出了冻结法穿过膨胀性厚黏土层应注意的问题是: 提高制冷能 力加速井中冻实; 缩短井壁段高, 减小暴露时间; 检测盐水温度, 确保冻结正常; 提高外壁强 度, 增强抵抗能力; 综合分析资料, 合理确定方案 : 副井; 冻结; 膨胀性; 黏土层 : TD26534 : A : 0253- 2336 ( 2007) 01- 0038- 04 Construction technology of freezing m ethod for m ine auxiliary shaft in Zhangshuanglou M in e passing through swelling th ick clay lay er WAN Yuan- chao (M in e C onstruc tion D ivis ion, J iang su H uame iE ng ineering C onstruction C orp ora tion, X uzhou 22 1131, Ch ina ) A bstrac t: The paper in roduced he safe y echno logy m easures, cons ruc ion me hods, h ick c lay excav a ion issues and rea m en for he m ine aux iliary shaf freezing and sink ing hrough sw e lling hick c lay layer in Zhangshuang lou M ine. T he pape r prov ided he issues for freezing m e hod passed hrough sw e lling hick c lay laye r: o mi prove he re frigera ion capaci y, o f irm ly freeze he g round in he sha f, o reduce he sec ion he igh of opera ion, o reduce he exposed mi e, o check he sa l w a er em pe ra ure, o keep a norm a l freez ing, o mi - prove he s reng h o f he ou e r w al,l o mi prove an i capac iy, o analyze he in fo rm a ion and ra ionally se he a l erna ive. K ey w ord s: m ine aux ilia ry shaf ; freezing; sw e lling; c lay lay er , , , 194 m, 50m 693 m, 453% , , 6 m , 6015 m, 11195 m,