3-D discontinuum numerical modeling of subsidence incorporating ore extraction and backfilling operations in an underground iron mine in China

被引：0

作者：

Huang Gang ^{[1
,2
,3
]}

Kulatilake Pinnaduwa H.S.W. ^{[3
]}

Shreedharan Srisharan ^{[3
]}

Cai Sijing ^{[2
]}

Song Hongqing ^{[2
]}

机构：

[1] School of Resources and Environmental Engineering, Wuhan University of Technology

[2] School of Civil and Environmental Engineering, University of Science and Technology,Beijing

[3] Rock Mass Modeling and Computational Rock Mechanics Laboratories, University of Arizona

来源：

International Journal of Mining Science and Technology | 2017年 / 27卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Underground iron mine; Discontinuum numerical modeling; Open stoping; Backfill; Subsidence;

D O I：

暂无

中图分类号：

TD861.1 [];

学科分类号：

081901 ;

摘要：

An underground iron mine in China has been used as a case-study to research the subsidence due to ore extraction and backfilling during open stoping operations. A 3-D discontinuum numerical model was built incorporating geologic complexities including faults and interfaces between different lithologies,and the stoping and backfilling sequence adopted from the mine plans. The stoping was carried out in two vertically stacked horizontal layers, with a total of 16 stopes. Large displacements of up to 50 cm were observed along the roof of the stopes, and a maximum surface subsidence of 22.5 cm was observed.Backfilling was found to eliminate subsequent displacements and subsidence. The extraction of the upper orebody was found to influence displacements in the lower orebody. Finally, a subsidence profile was constructed to show the subsidence at all locations along the length of the surface and region of influence on the surface.

引用

页码：191 / 201

页数：11

共 9 条

[1] 3-D discontinuum numerical modeling of subsidence incorporating ore extraction and backfilling operations in an underground iron mine in China
Huang Gang
Pinnaduwa, Kulatilake H. S. W.
Srisharan, Shreedharan
Cai Sijing
Song Hongqing
INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY, 2017, 27 (02) : 191 - 201
[2] 3-D MODELING OF UNDERGROUND MINE STRUCTURES WITH BACKFILL
ZHANG, L
MITRI, HS
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[7] Design of barrier pillars in Tabas underground Coal Mine (Iran) using 3D numerical modeling
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[9] Interactive 3D forward modeling of total field surface and three-component borehole magnetic data for the Daye iron-ore deposit (Central China)
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