[1]陳忠良,馬 雷.淺覆蓋區第四系三維地質結構模型不確定性分析——以運漕幅離散鉆孔為例[J].華東地質,2017,38(03):210-217.[doi:10.16788/j.hddz.32-1865/P.2017.03.007]
 CHEN Zhong-liang,MA Lei.Uncertainty analysis of 3D Quaternary geological structural model under a shallow cover, with the discrete boreholes in Yuncao map as an example[J].East China Geology,2017,38(03):210-217.[doi:10.16788/j.hddz.32-1865/P.2017.03.007]
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淺覆蓋區第四系三維地質結構模型不確定性分析——以運漕幅離散鉆孔為例()
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《華東地質》[ISSN:2096-1871/CN:32-1865/P]

卷:
38
期數:
2017年03期
頁碼:
210-217
欄目:
地質信息
出版日期:
2017-09-15

文章信息/Info

Title:
Uncertainty analysis of 3D Quaternary geological structural model under a shallow cover, with the discrete boreholes in Yuncao map as an example
文章編號:
2096-1871(2017)03-210-08
作者:
陳忠良1馬 雷2
(1. 安徽省地質調查院,合肥 230001; 2. 合肥工業大學資源與環境工程學院,合肥 230009)
Author(s):
CHEN Zhong-liang1 MA Lei2
(1. Geological Survey of Anhui Province, Hefei 230001, China; 2. School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China)
關鍵詞:
三維地質模型 第四系 不確定性 地統計學 置信度指數
Keywords:
3D geological model Quaternary uncertainty geostatistics Confidence Index
分類號:
P628+.3
DOI:
10.16788/j.hddz.32-1865/P.2017.03.007
文獻標志碼:
A
摘要:
針對以離散鉆孔為主要數據源建立的第四系三維地質結構模型,采用地統計學方法以置信度指數定量評估三維地質結構模型的不確定性。通過分析目標地層頂面趨勢,獲取其地質復雜度信息; 利用半方差函數模型分析目標地層頂面的空間自相關性,獲取其數據精度信息; 結合專家經驗,以置信度綜合評估模型的不確定性。以運漕幅第四系三維地質結構模型為例,分別繪制早—中更新世青弋江組(Qp1-2qy)與中—晚更新世大橋鎮組(Qp2-3d)頂面高程與置信度指數圖。結果表明,鉆孔位置和運漕幅右下角鉆孔密集處的置信度指數較高,圖幅邊緣及地層缺失處的置信度指數偏低。置信度指數與鉆孔數據精度呈正相關,與地質復雜度呈負相關。置信度指數可為以離散鉆孔為主要數據源建立的第四系三維地質結構模型的不確定性分析提供量化工具。
Abstract:
The Confidence Index of geostatistic method is used to quantitatively evaluate the uncertainty of Quaternary geological structural model that is established mainly based on discrete boreholes. The geological complexity information was obtained using trend analysis of the top surface of the target strata, and the data accuracy information was obtained according to the spatial autocorrelation of the top surface of the target stratum with semi-variance function analysis. Expert experience was also considered for comprehensively assessing the uncertainty in the form of confidence coefficient. The three-dimensional(3D)Quaternary geological structural model of the Yuncao area was taken as an example, and the elevation and Confidence Index maps of the top surfaces of Qp1-2qy and Qp2-3d were plotted in this study. The results show that the Confidence Index in the areas near boreholes or with dense boreholes is obviously high, and low in the areas near map edge or in stratum absence. The Confidence Index is positively correlated with borehole data accuracy, and is negatively with geological complexity. The Confidence Index provides a tool for quantitatively assessing the uncertainty of 3D Quaternary geological structural model established with discrete boreholes.

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相似文獻/References:

[1]陳忠良,童勁松,吳雪峰,等.安徽運漕地區隱伏地質體三維模型構建及應用[J].華東地質,2015,36(02):123.

備注/Memo

備注/Memo:
*收稿日期:2016-07-06 修訂日期:2016-09-23 責任編輯:譚桂麗
基金項目:中國地質調查局“1:5萬和縣等五幅區調(立體地質填圖示范)(編號:1212011120847)”資助。
第一作者簡介:陳忠良,1984年生,男,工程師,主要從事地質調查與地學信息技術研究。
更新日期/Last Update: 2017-09-19
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