摘要
尾矿堆积坝在运行过程和闭库前必须进行岩土工程勘察工作,目前尾矿堆积坝的勘察多依赖于传统的勘探手段,在时效性及可操作性上受到较多的制约。本文研究分析了微动勘探技术在尾矿堆积坝勘察中的适用程度,结果表明,微动勘探在尾矿堆积层的划分、判释尾矿沉积规律与坝底原始地层的工程性能等方面均有较好的适用性,测点平均面波速度和平均反演横波速度与标准贯入试验锤击数有较好的相关性,采用微动勘探技术反演的横波波速可在一定程度上代替地层的实测剪切波速。
Geotechnical investigation must be carried out in the process of operation and before closing the tailings embankment.The investigation of tailings embankment mostly depends on the traditional exploration means at present,which is restricted in timeliness and maneuverability.The applicability of the microtremor exploration in the investigation of tailings accumulation is studied and analyzed.The results show that the better applicability of the microtremor exploration in the division of tailings deposition layer,the interpretation of the law of tailings deposition and the engineering performance of the original stratum at the bottom of the embankment,and there is the better correlation between the blow counts of standard penetration tests and the average surface velocity and average inverse transverse wave velocity.The inverse transverse wave velocity from the microtremor could substitute the field shear wave velocity to some extent.
作者
董忠级
张吉宏
刘云祯
罗云海
侯伟
王神尼
Dong Zhongji;Zhang Jihong;Liu Yunzhen;Luo Yunhai;Hou Wei;Wang Shenni(Xi*an Engineering Investigation and Design Research Institute of China Nonferrous Metals Industry Co.,Ltd.,Xi'an 710054,China;Shaanxi Engineering Research Center of Tailing Pond Disaster Prevention and Mitigation,Xi'an 710054,China;Institute of Geophysical Prospecting of Beijing,Beijing 100076,China)
出处
《工程勘察》
2020年第9期72-78,共7页
Geotechnical Investigation & Surveying
基金
陕西省重点研发计划项目(2019SF-234)。
关键词
微动勘探
尾矿堆积坝
堆积层划分
剪切波速
标准贯入试验
microtremor
tailings embankment
deposition layer division
shear wave velocity
standard penetration test
