|Table of Contents|

Influence of Forest Fire on Physical and Mechanical Properties of Rock and Soil(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2022年第01期
Page:
114-123
Research Field:
工程地质与环境灾害
Publishing date:

Info

Title:
Influence of Forest Fire on Physical and Mechanical Properties of Rock and Soil
Author(s):
WANG Rui1;  LAN Heng-xing1; 2*;  LIU Shi-jie1;  WU Yu-ming2
(1. School of Geological Engineering and Geomatics, Chang'an University, Xi'an 710054, Shaanxi, China; 2. State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China)
Keywords:
geological disaster;  forest fire;  organic carbon;  particle size distribution;  clay mineral;  mechanical property;  vermiculite;  strain softening
PACS:
P642.3; S762.1
DOI:
10.19814/j.jese.2021.08026
Abstract:
After the forest fire in Xichang city of Sichuan province on March 30th, 2020, the geological disasters in the burned areas increase. At present, the research on the physical and mechanical properties of the burned soil and the disaster-causing mechanism is not in-depth. The organic carbon content, particle size and X-ray diffraction analysis were carried out on the surface soil samples in the areas covered by fire and the areas uncovered by fire, and the clay mineral content and mechanical strength characteristics of the soil samples before and after fire were studied in combination with related laboratory mechanical tests. The results show that:① the content of soil organic matter decreases after the fire, resulting in the exposure of unstable inorganic soil; the stability of soil aggregate structure decreases, and the content of fine particles in soil increases; fine particles tend to block the pores in the surface layer of soil, which is not conducive to the infiltration of rainwater or surface runoff. ② The high temperature process of the fire causes the content of clay minerals in the soil to change, with kaolinite(Kao)relative content decreasing by 10%, illite/vermiculite mixed layer increasing by 1%, illite(It)decreasing by 20% and vermiculite(V)increasing by 29%, and the increase of vermiculite is most obvious. ③ After the fire, the cohesion c value and internal friction angle φ value of soil decrease obviously, and the shear strength of soil samples with high vermiculite mineral content decreases obviously, and the strain softening phenomenon becomes more obvious. The occurrence of forest fire will significantly affect the basic physical and mechanical properties of soil, and the burned area has great development risk of geological disasters such as debris flow and landslide.

References:

[1] 杨 伟,姜晓丽.森林火灾火烧迹地遥感信息提取及应用[J].林业科学,2018,54(5):135-142.
YANG Wei,JIANG Xiao-li.Review on Remote Sensing Information Extraction and Application of the Burned Forest Areas[J].Scientia Silvae Sinicae,2018,54(5):135-142.
[2] CERTINI G.Effects of Fire on Properties of Forest Soils:A Review [J].Oecologia,2005,143(1):1-10.
[3] DUMONTET S,DINEL H,SCOPA A,et al.Post-fire Soil Microbial Biomass and Nutrient Content of a Pine Forest Soil from a Dunal Mediterranean Environment[J].Soil Biology and Biochemistry,1996,28(10/11):1467-1475.
[4] IMESON A C,VERSTRATEN J M,MULLIGEN E V,et al.The Effects of Fire and Water Repellency on Infiltration and Runoff Under Mediterranean Type Forest[J].Catena,1992,19(3/4):345-361.
[5] 于振江,胡卸文,曹希超.火烧迹地土壤斥水特性研究及其对火后泥石流诱发机理[J].地质灾害与环境保护,2020,31(2):93-99.
YU Zhen-jiang,HU Xie-wen,CAO Xi-chao.Research on the Soil Water Repellency in Burned Area and Its Inducing Effect on Debris Post-fire Debris Flow[J].Journal of Geological Hazards and Environment Pre-servation,2020,31(2):93-99.
[6] VEGA J A,FERNÁNDEZ C,FONTURBEL T.Th-roughfall,Runoff and Soil Erosion After Prescribed Burning in Gorse Shrubland in Galicia(NW Spain)[J].Land Degradation and Development,2005,16(1):37-51.
[7] 王 丽,千葉喬三.山地林火烧迹地水土流失动态变化的研究[J].水土保持研究,2007,14(6):44-47.
WANG Li,KCHIBA.Research on the Dynamic Ana-lysis of Water and Soil Losses in the Burned Area of Forest Field[J].Research of Soil and Water Conservation,2007,14(6):44-47.
[8] 胡卸文,王 严,杨 瀛.火后泥石流成灾特点及研究现状[J].工程地质学报,2018,26(6):1562-1573.
HU Xie-wen,WANG Yan,YANG Ying.Research Actuality and Evolution Mechanism of Post-fire Debris Flow[J].Journal of Engineering Geology,2018,26(6):1562-1573.
[9] 余哲修,何 超,李昔纯,等.基于归一化燃烧率火烧迹地遥感提取识别规则研究[J].西北林学院学报,2018,33(1):216-224.
YU Zhe-xiu,HE Chao,LI Xi-chun,et al.Extraction and Recognition of Burned Area Based on Normalized Burn Ratio by Remote Sensing[J].Journal of Northwest Forestry University,2018,33(1):216-224.
[10] GODEFROID S,RUCQUOIJ S,KOEDAM N.Spatial Variability of Summer Microclimates and Plant Species Response Along Transects Within Clearcuts in a Beech Forest[J].Plant Ecology,2006,185:107-121.
[11] MORALES H A,NÁVAR J,DOMÍNGUEZ P A.The Effect of Prescribed Burning on Surface Runoff in a Pine Forest Stand of Chihuahua,Mexico[J].Forest Ecology and Management,2000,137(1/2/3):199-207.
[12] 刘发林,陈小伟,曾素平,等.火干扰对森林土壤斥水性的影响研究进展[J].生态学报,2019,39(5):1846-1852.
LIU Fa-lin,CHEN Xiao-wei,ZENG Su-ping,et al.Progress of the Effects of Fire Disturbance on Forest Soil Water Repellency[J].Acta Ecologica Sinica,2019,39(5):1846-1852.
[13] OH C H,NAM D H,SIK K B.Assessment of the Effects of Forest Fires on Flood and Debris Flow in Gangwon-province [J].Korean Society of Hazard Mi-tigation,2019,19(6):75-86.
[14] 任 云,胡卸文,王 严,等.四川省九龙县色脚沟火后泥石流成灾机理[J].水文地质工程地质,2018,45(6):150-156.
REN Yun,HU Xie-wen,WANG Yan,et al.Disaster Mechanism of the Sejiao Post-fire Debris Flow in Jiulong County of Sichuan[J].Hydrogeology and Engineering Geology,2018,45(6):150-156.
[15] 陈中学,汪 稔,胡明鉴,等.黏土颗粒含量对蒋家沟泥石流启动影响分析[J].岩土力学,2010,31(7):2197-2201.
CHEN Zhong-xue,WANG Ren,HU Ming-jian,et al.Study of Content of Clay Particles for Debris Flow Occurrence in Jiangjia Ravine[J].Rock and Soil Mechanics,2010,31(7):2197-2201.
[16] COOK G D,SO H B,DALAL R C.Structural Degradation of Two Vertisols Under Continuous Cultivation[J].Soil and Tillage Research,1992,24(1):47-64.
[17] LAN H X,ZHOU C H,WANG L J,et al.Landslide Hazard Spatial Analysis and Prediction Using GIS in the Xiaojiang Watershed,Yunnan,China[J].Enginee-ring Geology,2004,76(1/2):109-128.
[18] 兰恒星,王苓涓,周成虎.云南小江流域滑坡关键影响因子研究[J].中国地质灾害与防治学报,2003,14(1):103-109.
LAN Heng-xing,WANG Ling-juan,ZHOU Cheng-hu.Study on the Key Landslide Factor by Means of CIS in Xiaojiang Valley,Yunnan[J].The Chinese Journal of Geological Hazard and Control,2003,14(1):103-109.
[19] 兰恒星,周成虎,高 星,等.四川雅安芦山地震灾区次生地质灾害评估及对策建议[J].地理科学进展,2013,32(4):499-504.
LAN Heng-xing,ZHOU Cheng-hu,GAO Xing,et al.Secondary Geological Hazard Assessment and Hazard Mitigation Countermeasures in Lushan,Ya'an Earthquake,Sichuan Province[J].Progress in Geography,2013,32(4):499-504.
[20] 兰恒星,仉义星,伍宇明.岩体结构效应与长远程滑坡动力学[J].工程地质学报,2019,27(1):108-122.
LAN Heng-xing,ZHANG Yi-xing,WU Yu-ming.Effect of Rock Mass Structure on the Dynamics of Long-runout Landslide[J].Journal of Engineering Geology,2019,27(1):108-122.
[21] 何 斌,袁 霞,刘运华,等.马尾松采伐迹地炼山前后土壤养分变化的研究[J].广西农业生物科学,2002,21(3):216-218.
HE Bin,YUAN Xia,LIU Yun-hua,et al.Studies on the Change of Soil Nutrient Before and After Controlled Burning All Cutting Woodland of Pinus Massoniana Plantation[J].Journal of Guangxi Agricultu-ral and Biological Science,2002,21(3):216-218.
[22] 地质矿产部水文地质专业测试中心.中华人民共和国地质矿产部土工试验规程DT-92-2版[M].北京:地质出版社,1993.
Hydrogeology Professional Testing Center of Ministry of Geology and Mineral Resources.Code for Geo-technical Test of Ministry of Geology and Mineral Resources of the People's Republic of China DT-92-2 Edition [M].Beijing:Geological Publishing House,1993.
[23] 孙银磊,汤连生,刘 洁.非饱和土微观结构与粒间吸力的研究进展[J].岩土力学,2020,41(4):1095-1122.
SUN Yin-lei,TANG Lian-sheng,LIU Jie.Advances in Research on Microstructure and Intergranular Suction of Unsaturated Soils[J].Rock and Soil Mecha-nics,2020,41(4):1095-1122.
[24] 兰恒星,陈俊辉,伍宇明.三轴压缩试验前后含气页岩微纳尺度裂隙空间分布特征研究[J].工程地质学报,2018,26(1):24-35.
LAN Heng-xing,CHEN Jun-hui,WU Yu-ming.Spatial Characterization of Micro- and Nanoscale Micro-cracks in Gas Shale Before and After Triaxial Compression Test[J].Journal of Engineering Geology,2018,26(1):24-35.
[25] 胡慧蓉,马焕成,罗承德,等.森林土壤有机碳分组及其测定方法[J].土壤通报,2010,41(4):1018-1024.
HU Hui-rong,MA Huan-cheng,LUO Cheng-de,et al.Forest Soil Organic Carbon Fraction and Its Measure Methods[J].Chinese Journal of Soil Science,2010,41(4):1018-1024.
[26] 胡海清,魏书精,金 森,等.森林火灾碳排放计量模型研究进展[J].应用生态学报,2012,23(5):1423-1434.
HU Hai-qing,WEI Shu-jing,JIN Sen,et al.Measurement Model of Carbon Emission from Forest Fire:A Review[J].Chinese Journal of Applied Ecology,2012,23(5):1423-1434.
[27] 钱 达,张 虎,何 龙.火灾区域林地植被变化分析:以大兴安岭和黄石公园地区为例[J].天津师范大学学报(自然科学版),2019,39(3):60-68.
QIAN Da,ZHANG Hu,HE Long.Vegetation Chang-es in Conflagration Area:Case Study of Da Hinggan Mountains and Yellowstone National Park Burned Area[J].Journal of Tianjin Normal University(Natural Science Edition),2019,39(3):60-68.
[28] VERGANI C,SCHWARZ M,SOLDATI M,et al.Root Reinforcement Dynamics in Subalpine Spruce Forests Following Timber Harvest:A Case Study in Canton Schwyz,Switzerland[J].Catena,2016,143:275-288.
[29] 徐则民,黄润秋,唐正光,等.黏土矿物与斜坡失稳[J].岩石力学与工程学报,2005,24(5):729-740.
XU Ze-min,HUANG Run-qiu,TANG Zheng-guang,et al.Clay Minerals and Failure of Slopes[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(5):729-740.
[30] 李洁祥,郭清海,余正艳.高温地热系统中黏土矿物形成对Na-K和K-Mg地球化学温标准确性的影响[J].地球科学,2017,42(1):142-154.
LI Jie-xiang,GUO Qing-hai,YU Zheng-yan.Impact of Clay Mineral Formation in High-temperature Geothermal System on Accuracy of Na-K and K-Mg Geothermometers[J].Earth Science,2017,42(1):142-154.
[31] 于 鑫,李 皋,陈 泽,等.川西须家河组致密砂岩高温后的物理力学特征参数试验研究[J].地质力学学报,2021,27(1):1-9.
YU Xin,LI Gao,CHEN Ze,et al.Experimental Study on Physical and Mechanical Characteristics of Tight Sandstones in the Xujiahe Formation in Western Sichuan After High-temperature Exposure[J].Journal of Geomechanics,2021,27(1):1-9.
[32] 邓华锋,原先凡,李建林,等.土石混合体直剪试验的破坏特征及抗剪强度取值方法研究[J].岩石力学与工程学报,2013,32(增2):4065-4072.
DENG Hua-feng,YUAN Xian-fan,LI Jian-lin,et al.Research on Failure Characteristics and Determination Method for Shear Strength of Earth-rock Aggregate in Direct Shear Tests[J].Chinese Journal of Rock Mechanics and Engineering,2013,32(S2):4065-4072.
[33] SKEMPTON A W.Residual Strength of Clays in La-ndslides,Folded Strata and the Laboratory[J].Géo-technique,1985,35(1):3-18.
[34] KAYA A,KWONG J K P.Evaluation of Common Practice Empirical Procedures for Residual Friction Angle of Soils:Hawaiian Amorphous Material Rich Colluvial Soil Case Study[J].Engineering Geology,2007,92(1/2):49-58.
[35] 田维亮,葛振红.蛭石功能材料研究进展[J].精细化工,2019,36(4):541-548.
TIAN Wei-liang,GE Zhen-hong.Research Progress on Functional Materials of Vermiculite[J].Fine Chemicals,2019,36(4):541-548.
[36] YANG W,ZHENG Y,ZAOUI A.Swelling and Diffusion Behaviour of Na-vermiculite at Different Hydra-ted States[J].Solid State Ionics,2015,282:13-17.
[37] ROBICHAUD P R,LEWIS S A,ASHMUM L E.New Procedure for Sampling Infiltration to Assess Post-fire Soil Water Repellency[R].Fort Collins:USDA,2008.
[38] MACDONALD L H,HUFFMAN E L.Post-fire Soil Water Repellency:Persistence and Soil Moisture Th-resholds[J].Soil Science Society of America Journal,2004,68(5):1729-1734.
[39] MCGUIRE L A,RENGERS F K,OAKLEY N,et al.Time Since Burning and Rainfall Characteristics Impact Post-fire Debris-flow Initiation and Magnitude[J].Environmental and Engineering Geoscience,2021,27(1):43-56.

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Last Update: 2022-02-25