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[1]曹兰柱,赵立春,王东,等.含多弱层复合边坡滑坡治理三维数值分析[J].中国安全生产科学技术,2015,11(6):102-107.[doi:10.11731/j.issn.1673-193x.2015.06.016]
 CAO La-zhu,ZHAO Li-chun,WANG Dong,et al.Three-dimensional numerical analysis on landslide control of composite slope with multiple weak layers[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2015,11(6):102-107.[doi:10.11731/j.issn.1673-193x.2015.06.016]
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含多弱层复合边坡滑坡治理三维数值分析
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
11
期数:
2015年6期
页码:
102-107
栏目:
职业安全卫生管理与技术
出版日期:
2015-06-30

文章信息/Info

Title:
Three-dimensional numerical analysis on landslide control of composite slope with multiple weak layers
作者:
曹兰柱1赵立春1王东1浦凤山1李伟2李振北3 宋子岭1
(1.辽宁工程技术大学 矿业学院,辽宁 阜新 123000;2.内蒙古霍林河南矿, 内蒙古 霍林郭勒 029200; 3.中油管道检测技术有限责任公司,河北 廊坊065000)
Author(s):
CAO La-zhu1 ZHAO Li-chun1 WANG Dong1 PU Feng-shan1 LI Wei2 LI Zhen-bei3 SONG Zi-ling1
(1. College of Mines, Liaoning Technical University, Fuxin Liaoning 123000, China; 2. Huolinhe South Mine, Holingola Inner Mongolia 029200, China; 3. China Petroloum Pipeline Detection Technology Limited Liability Company, Hebei Langfang 065000, China)
关键词:
复合边坡弱层滑坡治理强度折减法条采方案
Keywords:
composite slope weak layer landslide control strength reduction method strip mining program
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2015.06.016
文献标志码:
A
摘要:
白音华二号矿滑坡区边坡治理工程是针对稳定性差的南帮非工作帮和南排土场构成的复合边坡进行的。滑坡体受多层弱层控制,治理过程中易导致边坡失稳,所以治理工程采取分区开采的条采方案,充分利用边坡治理的三维效应来进行边坡的失稳破坏研究和稳定性分析。选取滑坡区的典型剖面作为研究对象,基于强度折减方法(SRM),应用有限差分FLAC3D软件,在两种开挖条件下,对含多弱层的复合边坡的稳定性规律和破坏机制进行了数值模拟分析,揭示了多弱层对复合边坡的失稳破坏及稳定性的影响。研究结果表明,治理工程中,弱层被揭露一定宽度,滑体沿煤底板弱层水平错动、竖直方向拉裂破坏;随弱层暴露宽度的增加,边坡稳定性明显降低,说明治理边坡具有三维效应;开挖至3-3煤层底板,开挖坡角20°,弱层暴露宽度为400m,边坡的稳定系数刚好达到安全储备系数1.1,建议矿方首选此方案,可以最大限度的回收煤炭资源。
Abstract:
The slope control project on landslide area of Baiyinhua No.2 mine is conducted aiming at the composite slope consisted of south non-working slope and south dump with poor stability. The landslide body is controlled by multi-layer weak layers, and the slope instability is easily to happen in control process, so the partition strip mining scheme is adopted, and the three-dimensional effect of slope control is made full use in instability failure study and stability analysis of slope. Choosing the typical section of landslide area as the research object, based on the strength reduction method (SRM), using finite difference software FLAC3D, under the conditions of two kinds of excavation, the numerical simulation analysis was carried out concerning stability rules and failure mechanism of composite slope with multiple weak layers, and the influence of multiple weak layers on instability failure and stability of composite slope was revealed. The results showed that the weak layer was excavated to a certain width in control process, and sliding body dislocated horizontally along the coal floor of weak layers and destroyed vertically under tensile strength. With the growing exposed width of weak layer, the slope stability decreased obviously, which indicated a three-dimensional effect in slope control. When excavating to 3-3 seam floor, the excavation slope angle was 20 °, and the exposed width of weak layer was 400 m, the stability factor of slope reached the safety reserve factor 1.1 exactly. It was suggested that the mine party should adopt this scheme firstly, in order to recover the maximum coal resources.

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更新日期/Last Update: 2015-06-30