Probabilistic retro-analysis of failed OB dump on the weak ground with water table variation and varied preventive measures

IF 3 3区地球科学 Q2 GEOSCIENCES, MULTIDISCIPLINARY Physics and Chemistry of the Earth Pub Date : 2024-10-24 DOI:10.1016/j.pce.2024.103784

Rahul Shende, Srinivasan V, Mohammad Sameer Ahmed, Anirban Mandal

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Abstract

The study focuses on a failure in the form of heaving and sliding at the external Overburden (OB) dump in the Open-cast Mine site. Through a unique approach, the Monte Carlo Simulation technique was used to conduct a probabilistic back and slope stability analysis to assess the dump sections. The study considered the water table level and dumps shear strength parameters as random variables. The results provide valuable insights into understanding the factors influencing the OB dump over weak strata. As preventive measures, gabion walls and rockfill trench were used to reduce the probability of failure (P_f) of dumps that increased in height to 75 m and 90 m. The maximum percentage reduction in the P_f for the gabion wall was 51.49% and 27.43% for 75 m and 90 m dump sections. For the rock-fill trench, the maximum percentage reduction in the P_f was 61.28% and 57.31% for 75 m and 90 m dump sections.

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对地下水位变化的软弱地基上转播台倾倒失败的概率回溯分析及各种预防措施

这项研究的重点是露天采矿场外部覆土（OB）堆场发生的起伏和滑动。通过一种独特的方法，使用蒙特卡洛模拟技术对堆场断面进行了后退和边坡稳定性概率分析。研究将地下水位和堆场剪切强度参数视为随机变量。研究结果为了解影响软弱地层上转播倾卸场的因素提供了宝贵的见解。作为预防措施，石笼墙和填石沟渠被用来降低高度增加到 75 米和 90 米的倾倒区的坍塌概率（Pf）。在填石沟渠中，75 米和 90 米堆放段的最大 Pf 降低率分别为 61.28% 和 57.31%。

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来源期刊

Physics and Chemistry of the Earth 地学-地球科学综合

CiteScore

5.40

自引率

2.70%

发文量

176

审稿时长

31.6 weeks

期刊介绍： Physics and Chemistry of the Earth is an international interdisciplinary journal for the rapid publication of collections of refereed communications in separate thematic issues, either stemming from scientific meetings, or, especially compiled for the occasion. There is no restriction on the length of articles published in the journal. Physics and Chemistry of the Earth incorporates the separate Parts A, B and C which existed until the end of 2001. Please note: the Editors are unable to consider submissions that are not invited or linked to a thematic issue. Please do not submit unsolicited papers. The journal covers the following subject areas: -Solid Earth and Geodesy: (geology, geochemistry, tectonophysics, seismology, volcanology, palaeomagnetism and rock magnetism, electromagnetism and potential fields, marine and environmental geosciences as well as geodesy). -Hydrology, Oceans and Atmosphere: (hydrology and water resources research, engineering and management, oceanography and oceanic chemistry, shelf, sea, lake and river sciences, meteorology and atmospheric sciences incl. chemistry as well as climatology and glaciology). -Solar-Terrestrial and Planetary Science: (solar, heliospheric and solar-planetary sciences, geology, geophysics and atmospheric sciences of planets, satellites and small bodies as well as cosmochemistry and exobiology).