Synthetic Study of Boulder Detection Using Multi-Configuration Combination of Cross-Hole ERT and Its Field Application in Xiamen Metro, China

被引：1

作者：

Li, Ningbo ^{[1
,2
,3
]}

Dong, Zhao ^{[1
,2
]}

Liu, Zhengyu ^{[1
,2
]}

Yan, Bing ^{[1
,2
]}

Wang, Kai ^{[4
]}

Nie, Lichao ^{[1
,2
]}

Lin, Chunjin ^{[1
,2
]}

Shen, Junfeng ^{[1
,2
]}

Ma, Zhao ^{[1
,5
]}

Zhang, Yongheng ^{[1
,5
]}

机构：

[1] Shandong Univ, Geotech & Struct Engn Res Ctr, Jinan 250061, Peoples R China

[2] Shandong Univ, Sch Civil Engn, Jinan 250061, Peoples R China

[3] Minist Water Resources, Gen Inst Water Resources & Hydropower Planning &, Beijing 100120, Peoples R China

[4] Shandong Hispeed Grp Co Ltd, Jinan 250101, Peoples R China

[5] Shandong Univ, Sch Qilu Transportat, Jinan 250061, Peoples R China

来源：

APPLIED SCIENCES-BASEL | 2021年 / 11卷 / 24期

关键词：

cross-hole ERT; boulder detection; multi-configuration combination; weighting factor; ELECTRICAL-RESISTIVITY TOMOGRAPHY; QINGDAO; INVERSION; SURFACE; TUNNEL; R3;

D O I：

10.3390/app112411860

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

With the fast development of urban rail transportation, shield construction has been widely used in tunnel construction in China. It is very important to detect the random distribution of boulders, which may cause geological problems. Cross-hole electrical resistivity tomography (ERT) has the advantage of precise detection, but it has not been systematically studied in solitary rock detection. Therefore, we set up several numerical models and proposed weighted inversion, to improve the capacity for detecting boulders. Subsequently, the method was applied to the Xiamen Metro Line 1, where it was highly likely to encounter boulders. All the test boreholes revealed the presence of boulders, and their location and size were consistent with the geophysics results. This study demonstrated the suitability of weighted inversion based on a multi-configuration combination of cross-hole ERT for the detection of boulders. This case study provides new engineering perspectives on how to detect boulders.

引用

页数：11