2012年1月上 施工技术 第41卷第356期 CONSTRUCTION TECHNOLOGY 59 高寒季节性冻土地区地基处理冬季施工技术 闫续屏 (山西省机械施工公司,山西太原030009) [摘要]以大唐阜新煤制天然气工程的冬季施工实例,介绍了高寒季节性冻土地区在大规模场平和高填方强夯地 基冬季施工中采取的施工措施.采取了地温测量、强夯试打、探槽观测3项观测探查措施确定场地冻夹层消融的 时间.工程检测结果表明,地基处理全部满足设计要求. [关键词]地基处理;冻土;强夯;冬季施工;测量;探槽 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2012)01-0059-02 Winter Construction Technology of Field-leveling and High Fill Foundation Dynamic Compaction in Alpine Seasonal Frozen Soil Area Yan Xuping (Shanxi Machinery Construction Company Taiyuan Shanxi 030009 China) Abstract:Based on engineering practice of some gas engineering in Fuxin the author introduces construction measures of field-leveling and high fill foundation dynamic paction in alpine seasonal frozen soil area.Three observation measures such as earth temperature measuring dynamic paction test and trench observation are adopted to determine the ablation time of frozen dissection.Engineering detection results show that the treatment can meet the requirements of design. Key words:foundation treatment;frozen soil;dynamic paction;winter construction; measurement;trench 1工程概况 1417478m3 总填方量1304196m3.最大填方高 辽宁大唐阜新煤制气有限公司日产1200万m3度18.05m.场地整平后分为11个台阶,各个台阶 煤制天然气项目,位于阜新市新邱区长营子镇.处设计标高分别为绝对高程196 200 202.5 203.5, 于阜新盆地中部,地势西南高,东北低,海拔标高在205 207.5 212.5 217.5 218 220 221.5m. 181.5~243m. 3)填土成分复杂,本场地的填方材料为挖方区 阜新市属北温带大陆性季风气候,四季分明.出土,主要成分为砾砂、残积土、碎石土、强风化粗 其主要特点是春季干早多风,夏季干燥,雨涝集中, 砂岩,中风化粗砂岩等多种成分,且均为易风化材 秋季降温较快,冬季严寒少雪.全年无霜期150d左 料.在地表水、地下水的渗透下易产生风化、渗透 右,初霜最早在9月下旬,终霜最晚在5月中旬,平 变形和地层塌陷等不良...