Scholarlink

<p>The issue of rock weathering at the Bingling Temple Grottoes (BTG) has been previously studied from two perspectives: external factors (climate) and internal factors (rock type, clay minerals, etc.). However, the construction of the reservoir has led to a rise in surface water levels within the grotto region, posing a direct threat to the long-term preservation of relics. This study represents a systematic investigation into the weathering issues following joint regulation for the first time. Research on the weathering characteristics and mechanism of the cliffs in this fluctuating zone has been carried out at three scales (bank–macro–micro), using field tests, indoor experiments, and an improved comprehensive weathering index. The main findings are as follows: (1) There are two peak water levels each year that can reach areas 0.5–1.5&#xa0;m above the gully bed. Cliffs experience cycles of wetting–drying freeze–thaw processes and salt accumulation. (2) Proximity to the reservoir correlates positively with increased degrees of rock wall weathering. Cliffs within fluctuating water-level zones exhibit moderate weathering, while lower seasonal inundation areas and upper non-inundated regions show relatively weaker degrees of alteration. (3) A microlevel analysis reveals that under alkaline water conditions predominantly feldspar (potassium feldspar and plagioclase) undergoes significant weathering accompanied by illitization processes involving smectite. Additionally, hydration–expansion effects associated with smectite exacerbate structural disintegration within rock masses. This research provides further evidence regarding the mechanisms underlying rock wall weathering for cultural relics situated along reservoir bank while emphasizing unique interactions between alkaline waters and rocks.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

The influence of seasonal water-level fluctuations on cliff weathering at the Bingling Temple Grottoes near the reservoir bank

  • 期刊论文

  • 发表日期：

    2025年12月17日

查看全文
  • Wenwu Chen,
  • Peiran Liu,
  • Li Wang,
  • Liufang Li,
  • Qian Xia,
  • Ruxue Liao,
  • Yanjun He,
  • Qinglin Guo,
  • Jianwei Yue

摘要

The issue of rock weathering at the Bingling Temple Grottoes (BTG) has been previously studied from two perspectives: external factors (climate) and internal factors (rock type, clay minerals, etc.). However, the construction of the reservoir has led to a rise in surface water levels within the grotto region, posing a direct threat to the long-term preservation of relics. This study represents a systematic investigation into the weathering issues following joint regulation for the first time. Research on the weathering characteristics and mechanism of the cliffs in this fluctuating zone has been carried out at three scales (bank–macro–micro), using field tests, indoor experiments, and an improved comprehensive weathering index. The main findings are as follows: (1) There are two peak water levels each year that can reach areas 0.5–1.5 m above the gully bed. Cliffs experience cycles of wetting–drying freeze–thaw processes and salt accumulation. (2) Proximity to the reservoir correlates positively with increased degrees of rock wall weathering. Cliffs within fluctuating water-level zones exhibit moderate weathering, while lower seasonal inundation areas and upper non-inundated regions show relatively weaker degrees of alteration. (3) A microlevel analysis reveals that under alkaline water conditions predominantly feldspar (potassium feldspar and plagioclase) undergoes significant weathering accompanied by illitization processes involving smectite. Additionally, hydration–expansion effects associated with smectite exacerbate structural disintegration within rock masses. This research provides further evidence regarding the mechanisms underlying rock wall weathering for cultural relics situated along reservoir bank while emphasizing unique interactions between alkaline waters and rocks.