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Assessment Method of Slope Excavation Quality based on Point Cloud Data

  • Zhiguo Pan
  • Yihong ZhouEmail author
  • Chunju Zhao
  • Chao Hu
  • Huawei Zhou
  • Yong Fan
Construction Management
  • 59 Downloads

Abstract

Slope excavation quality assessment is essential in water conservancy engineering. This study presents a quality assessment method to estimate the excavation quality of a slope based on point cloud data obtained from a 3D Terrestrial Laser Scanner (TLS). A data processing method, which includes coordinate registration, data partitioning, and noise removal, is proposed to organize raw data from the TLS and ensure accurate and available point cloud data of a slope surface. An excavation quality assessment method with seven indicators, namely, slope ratio, slope toe elevation, back break, volume of back break, remained semi-void rate, unevenness, and offset degree, is proposed to analyze the difference between a slope’s as-design excavation appearance and actual construction appearance. The as-design excavation appearance is expressed by the Building Information Modeling (BIM) model of a slope-excavation face, and it is a reference to assess the actual construction appearance. The slope excavation quality of a water conservancy project in southwest China is evaluated with the proposed method and the traditional method. The results demonstrate that the proposed method can estimate the slope excavation quality effectively, rapidly, and accurately, and can provide theoretical data support for subsequent work.

Keywords

slope excavation construction quality assessment point cloud data water conservancy project 

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Copyright information

© Korean Society of Civil Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Zhiguo Pan
    • 1
  • Yihong Zhou
    • 2
    Email author
  • Chunju Zhao
    • 2
  • Chao Hu
    • 3
  • Huawei Zhou
    • 2
  • Yong Fan
    • 4
  1. 1.College of Water Conservancy and Hydropower EngineeringHohai UniversityNanjingChina
  2. 2.College of Hydraulic and Environmental EngineeringChina Three Gorges UniversityYichangChina
  3. 3.China Renewable Energy Engineering InstituteBeijingChina
  4. 4.Hubei Key Laboratory of Construction and Management in Hydropower EngineeringChina Three Gorges UniversityYichangChina

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