Experiments on permeability characteristics of grotto sandstone after temperature cycling

doi:10.11835/j.issn.1000.582X.2024.10.003

Home > Archive>Volume 47, Issue 10, 2024 >37-45. DOI:10.11835/j.issn.1000.582X.2024.10.003

Experiments on permeability characteristics of grotto sandstone after temperature cycling
DOI:
                        10.11835/j.issn.1000.582X.2024.10.003
                    
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Author:
                        WANG Chenglong1,2,3WANG Chenglong
Academy of Dazu Rock Carvings, Chongqing402360, P. R. China;College of Civil Engineering, Chongqing University, Chongqing400044, P. R. China;Chongqing Bureau of Geology and Minerals Exploration, Chongqing401121, P. R. China
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JIANG Siwei1JIANG Siwei
Academy of Dazu Rock Carvings, Chongqing402360, P. R. China
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ZHANG Wengang2ZHANG Wengang
College of Civil Engineering, Chongqing University, Chongqing400044, P. R. China
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CHEN Pengju2CHEN Pengju
College of Civil Engineering, Chongqing University, Chongqing400044, P. R. China
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LIU Dongsheng3LIU Dongsheng
Chongqing Bureau of Geology and Minerals Exploration, Chongqing401121, P. R. China
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GUO Yachen2GUO Yachen
College of Civil Engineering, Chongqing University, Chongqing400044, P. R. China
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Affiliation:1.Academy of Dazu Rock Carvings, Chongqing402360, P. R. China;2.College of Civil Engineering, Chongqing University, Chongqing400044, P. R. China;3.Chongqing Bureau of Geology and Minerals Exploration, Chongqing401121, P. R. China
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Fund Project:Supported by the Academy of Dazu Rock Carvings Foundation (H20220387), Special Key Project of Chongqing Technology Innovation and Application Development (CSTB2022TIAD-KPX0095), and Natural Science Foundation of Chongqing (CSTB2022NSCQ-LZX0001).

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Abstract:

The rock mass of grotto temples, exposed year round, is influenced by natural factors, especially temperature fluctuations and water seepage, which change the rock’s physical properties. This paper investigates the permeability characteristics of Dazu grotto sandstone(Chongqing) after multiple heating-cooling cycles. Permeability tests are conducted under various conditions, such as cycle frequency, high temperature exposure durations, and cooling methods. Results show that sandstone permeability increases with heating-cooling cycles, influenced by the number of cycles and cooling methods. High permeability pressure also reduces sandstone’s compressive strength compared to low permeability pressure.

Key words:grotto sandstone;temperature effect;cooling methods;permeability characteristics

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王成龙,蒋思维,仉文岗,陈鹏举,刘东升,郭亚琛.温度循环作用下石窟砂岩渗透特性试验[J].重庆大学学报,2024,47(10):37~45

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Received:September 20,2023
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Online: November 14,2024
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