既有地铁隧道上方污染场地跳仓开挖及异位修复效果研究

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文章编号：1674-6139（2025）08-0096-06

中图分类号：X53文献标志码：B

Effect of Jumping Excavation and Ectopic Restoration of Contaminated Site above Existing Subway Tunnel

Zheng Tingyu1，2

（1.Center International Group Co.，Ltd.，Beijing 100176，China; 2.College of Chemistry，LiaoningUniversity，Shenyang110o36，China）

Abstract：Basedonthepolutioncharacteristicsofcertainsiteandthesructuralconditionofthesubway，thepolutedsoilwasexcavatedbyjumpingthesilo.Theheavymetalpolutedsoilgeneratedbytheexcavationwassubjectedtoctopicrinsingrepair，andthe composite polluted soil（Fluoride + heavy metal +PHAs ）was disposed of ina cement kiln.The results showed that the excavation of the jumpingchamberreducedtheimpactonthedeformationofthesubwaystructure，andthecumulativemaximumchangesinthesettement of the subway track bed and tunnel convergence were -2.8mm and -1.5mm ，respectively，both lower than the control value of ±5mm Theconcentrationsoffourheavymetalsinthesoilafterectopicrinsingrepairwithcitricacidhydroxylaminehydrochloridewere all lower than the remediation target values，with aremoval rate of approximately 63.5%～97.3% ．After collaborative treatment in cementkilns，theleacingconcentrationsof3poltantsinthecinkerwereallowerthanteargetvalues，and8typesofsereot detected，with aremoval rateclose to 100% .The method of jumping excavation and ectopic repair has minimal disturbance to the subway structure，high treatment efficiency，and isrelatively economical.

Keywords：polluted site；jumping excavation；subwayprotection；rinsingrepair；collaborativedisposal ofcement kilns

前言

土壤是人类生存和发展的必要条件，由于钢铁冶炼、工业排放、农业灌溉等不当的生产活动，造成土壤污染[1]。（剩余6972字）