Study on the Construction of 3D Geological Model of Quaternary Loose Sedimentary Strata Based on the Global Stratigraphic Discrete Points

Jixiang Zhu,Yan Lu,Xiaoyuan Zhou,Guanghui Zhang,Guangjun Ji

doi:10.3390/w14010075

Abstract

Accurately depicting the spatial structure characteristics of Quaternary loose sedimentary strata is not only of great significance for the research of Quaternary geological evolution, but also for the analysis of spatial variation characteristics of the inner hydrogeological and engineering geological attributes of the strata. In this study, an approach for constructing a 3D geological model of Quaternary loose sedimentary strata is proposed based on global stratigraphical discrete points. The approach obtains the discrete control point set of each stratum by using limited borehole data for interpolation and encryption, and the contact relationships and intersection modes of adjacent strata can be determined via the analysis of stratigraphic sequence; finally, taking these as the professional basis, the construction of the 3D geological model of Quaternary loose sedimentary strata can be carried out. This application can not only accurately describe the three-dimensional spatial distribution characteristics of the Quaternary loose sedimentary strata, it can also be used to perform a layered simulation of the spatial variation characteristics of the inner geological properties of the Quaternary loose sedimentary strata, such as lithology, porosity, and water content, by taking the three-dimensional spatial framework of each stratum as the simulation boundary. Finally, this study takes the citizen center of Xiong’an new area as an example in order to verify the reliability and advancement of the 3D geological modeling scheme.

Highlights

Publisher’s Note: MDPI stays neutralThe Quaternary loose sedimentary stratum is one of the most important places for human survival [1,2], and its spatial structural variation controls the internal engineering of geological [3] and hydrogeological [4,5] characteristics which are of great significance for infrastructure [6,7], prevention of geological disasters [8], and groundwater safety [9,10]
The study area is located at the junction of the margin of the piedmont alluvial fan of the Taihang mountains and the catchment area of Baiyangdian lake, where the terrain is relatively flat and tectonic activity has been quite weak since the Holocene of the Quaternary; there are four types of sedimentary genesis: floodplain, alluvial–proluvial, Figure 7
The study area is located at the junction of the margin of the piedmont alluvial fan of the Taihang mountains and the catchment area of Baiyangdian lake, where the terrain is relatively flat and tectonic activity has been quite weak since the Holocene of the Quater4

Summary

Introduction

The Quaternary loose sedimentary stratum is one of the most important places for human survival [1,2], and its spatial structural variation controls the internal engineering of geological [3] and hydrogeological [4,5] characteristics which are of great significance for infrastructure [6,7], prevention of geological disasters [8], and groundwater safety [9,10]. Two issues may arise from technical schemes that directly analyze the sedimentary characteristics of Quaternary loose strata based on locally limited data. The first is there is never enough data [25,26], especially for large-scale Quaternary geological research; with regard to jurisdictional claims in published maps and institutional affiliations

Methods

Results

Conclusion