不同环境作用下生物加固钙质砂岸坡稳定性技术研究

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关键词：微生物诱导;碳酸钙沉积；结晶;砂质岸坡;盐雾循环；干湿循环;高低温交替

中图分类号： TQ132.3+2 ;TU472.4 文献标志码：A

文章编号：1001-5922（2025）09-0108-04

Research on the stability technology of bio-reinforcement calcareous sand bank slope under different environmental actions

SONG Haibo，MA Xingchen，XIE Ying，LIU Meng，WANG Miao （Shandong Provincial Water Resources Survey and Design Institute Co.，Ltd.，Jinan 25ool3，China）

Abstract：Inordertoimprovetheresistanceofcalcareoussandbankslopetoerosionandaleviatethedegradationof coastal zone caused by various environments，the calcareous sand bank slope was strengthened bymicrobial induced calcium carbonate deposition （MICP）technology，and its durabilityafterreinforcement was tested.Theresultsshowed that the strength of the sandstone could reach7MPaand the deformation modulus could reach 26O MPaafter MICPreinforcement.The strength loss of the reinforced specimens was 57.1% ， 50% ， 24.2% and 51.4% ，and the mass loss rates were （20 6.4% . 4.3% ， 2.4% and 4.1% ，respectively.Under the action of salt spray environment，dry and wet environment and dry and wet-high andlow temperature coupling environment，the degre of calcium carbonate crystal peeling on the sufaceof the sample was more serious，thesurface was relatively smooth，the bridging force between particles was weakened，the mechanical propertiesdeclined rapidly，and the erosion efectof high and low temperatureenvironment onMICP reinforced sandstone specimens was small.

Key words： microbial induction;calcium carbonate deposition;crystalized;sandybank slope;salt spray circulation;wet and dry cycles;high and low temperature alternately

我国是一个拥有很长海岸线的国家，岸坡受到海 浪、干湿循环、盐雾侵蚀、高低温交替变换的复杂耦合作用，很容易发生退化，给经济和社会带来巨大损失[1-3]，尤其是砂质岸坡，对于外界环境的敏感性更强。（剩余5166字）