地质结构约束下的城市多要素三维属性建模方法研究

李林; 王涛; 董英; 曾磊; 张戈; 张新社

doi:10.12401/j.nwg.2023091

地质结构约束下的城市多要素三维属性建模方法研究

1.
中国地质调查局西安地质调查中心，陕西西安　710119

2.
自然资源部黄土地质灾害重点实验室，陕西西安　710119

基金项目: 中国地质调查局项目“西安多要素城市地质调查”（1212011220031）和“西安市地质安全体检与风险评估示范”（DD20211317）联合资助。

详细信息

作者简介: 李林（1976−），男，硕士，高级工程师，主要从事地学空间分析及地学信息化建设工作。E−mail：llin@mail.cgs.gov.cn

通讯作者: 王涛（1987−），男，硕士，高级工程师，主要从事水工环地质调查与研究。E−mail：476644953@qq.com

中图分类号: P546

收稿日期: 2023-03-17

修回日期: 2023-05-10

刊出日期: 2023-06-20

Multi–Factor Attribute Modeling Method Constrained by Geological Structure：A Case Study in Xixian New Area

1.
Xi’an Center of China Geological Survey, Xi’an 710119, Shaanxi, China

2.
Key Laboratory for Geo–hazards in Loess Area, MNR, Xi’an 710119, Shaanxi, China

More Information

Corresponding author: WANG Tao, 476644953@qq.com

Received Date: 17 March 2023

Revised Date: 10 May 2023

Publish Date: 20 June 2023

摘要

摘要:
支持结构——属性一体化表达的建模方法是三维建模研究的重点和难点之一。已有三维地质建模技术往往存在结构与属性建模过程的割裂，难以实现对地质结构先验知识与属性分析模拟的融合表达。笔者以西咸新区工程地质建模为例，基于多要素精细化探测成果，建立区域统一的地质构造框架模型；在地质构造约束下，充分考虑地质单元特征，精细剖分建模网格，采用随机模拟算法开展属性建模研究，从而实现地质结构约束下的三维属性模型构建。本方法既保留了构造建模对层面的清晰划分,又可以在地层内部更加合理地展现地质属性的空间分布和变化，能够在工程地质勘察和城市地下空间开发等领域得到应用。
- 城市地质 /
- 多要素属性建模 /
- 三维地质建模 /
- 西咸新区
Abstract:
The 3D geological modeling method that supports the structure–attribute integrated representation is one of the keys and difficulties in the research of 3D modeling. Existing 3D geological modeling technology is difficult to realize the integration and expression of the prior knowledge of geological structure and attribute analysis and simulation. Taking Xixian new area as an example, a unified regional geological structure framework model is established. Under the constraint of geological structure conditions, three–dimensional structure–attribute integrated expression are realized. This method not only retains geology structural modeling, but also can more reasonably show the spatial distribution and change of geological attributes inside the strata It has been applied in engineering geological investigation and urban underground space development.
- urban geology /
- multi–factor attribute modeling /
- 3D geological modeling /
- Xixian New Area

HTML全文

图 1 三维地质建模流程图

Figure 1.

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图 2 网格化方法示意图

Figure 2.

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图 3 西咸新区地质地貌图

Figure 3.

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图 4 西咸新区三维地质结构与岩性随机模型

Figure 4.

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图 5 西咸新区三维属性随机模型图

Figure 5.

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图 6 结构与属性模型虚拟剖面对比图

Figure 6.

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图 7 地下空间开发三维稳定性评价图

Figure 7.

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表 1 建模数据源

Table 1. Data source for 3D geological modeling

编号	数据源	精度
1	大西安地区遥感影像图	2 m
2	西咸新区数字高程模型	5 m
3	西咸新区地貌图	1∶50000
4	西咸新区构造地质图	1∶100000
5	工程地质钻孔	280孔
6	工程地质剖面图	1∶5000
7	多要素测井曲线	167孔

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