中空螺旋半合管直推取样建井工艺在污染场地调查中的应用研究  

Application of direct push sampling and well drilling technology with the hollow auger split‑tube in contaminated site investigation

作　　者：王青薇 尹业新 王水[2,3] 王何琦 王瑜 钟道旭[2,3] WANG Qingwei;YIN Yexin;WANG Shui;WANG Heqi;WANG Yu;ZHONG Daoxu(Nanjing Eprobe Environmental Technology Co.,Ltd.,Nanjing Jiangsu 211200,China;Jiangsu Province Academy of Environmental Science,Nanjing Jiangsu 210036,China;Jiangsu Province Key Laboratory of Environmental Engineering,Nanjing Jiangsu 210036,China;China University of Geosciences,Key Laboratory of Deep GeoDrilling Technology of Ministry of Natural Resources,Beijing 100083,China)

机构地区：[1]南京贻润环境科技有限公司,江苏南京211200 [2]江苏省环境科学研究院,江苏南京210036 [3]江苏省环境工程重点实验室,江苏南京210036 [4]中国地质大学(北京),自然资源部深部地质钻探技术重点实验室,北京100083

出　　处：《钻探工程》2022年第3期154-159,共6页Drilling Engineering

基　　金：江苏省自然科学基金面上项目“有机污染场地土壤热处置机理与模型构建研究”(编号:BK20191501);江苏省环境工程重点实验室开放课题“针对密实土壤的高效土壤采样技术研究”(编号:KF2017004)。

摘　　要：污染场地土壤地下水的勘查需要同时满足取样和建井需求,中空螺旋半合管具有一定的自攻性,能够在获取低扰动土壤样品的同时建立地下水监测井。本文首先分析了中空螺旋的技术特点,同时基于直推式环境取样装备,提出中空螺旋半合管直推取样建井工艺,并在砂土相对密实度为0.46~0.83(12~16 m)的第四系砂土类地层进行项目试验。试验结果表明,该工艺能够有效解决传统直推取样工艺在土壤密实区域难以到达预定深度的难题,且岩心采取率>90%,是一种值得推广的环境取样技术。The exploration of soil and groundwater in contaminated sites needs to meet the requirements of sampling and well construction at the same time.The hollow auger split⁃tube can provide some self⁃driving,which can drill groundwater monitoring wells while obtaining low⁃disturbance soil samples.This paper analyzes the technical characteristics of the hollow auger,and,puts forward the direct push sampling and well construction technology with the hollow auger split tube based on the direct push environmental sampling equipment.Field tests were carried out in the quaternary sandy soil stratum with the relative density of sandy soil of 0.46~0.83(12~16m),and the test results show that the hollow auger split⁃tube method can effectively solve the problem with the traditional direct⁃push sampling method by which it is difficult to reach the predetermined depth in the firm soil area;meanwhile the core recovery was higher than 90%.The technology is a kind of environmental sampling technology worthy of promotion.

关 键 词：中空螺旋半合管 直推技术 污染场地调查 土壤取样 地下水监测井 

分 类 号：P634[天文地球—地质矿产勘探] X53[天文地球—地质学]