摘要
通过对黄河险工和控导工程防汛抢险中抛投材料大量走失原因进行分析,并以铅丝石笼为研究对象,建立了抛投体在动水中的受力分析模型。在对抛投体进行受力分析的基础上,研究险工流速、水深等对抛投体稳定性的影响规律,结果表明:抛投法抢险中,险工处瞬时流速越大、水深越大,抛投体在动水中的位移就越大,稳定性就越差;增加抛投体的质量(体积),能够有效减小抛投体在动水中的位移,增强其稳定性;设计合理质量的抛投体、预留足够的抛投距离或采用链接抛投体等措施能够确保黄河防汛抢险中抛投体的稳定性。
In this paper,the causes of mass loss of throwing materials in flood control of the Yellow River were analyzed and the stress analy⁃sis model of throwing body in moving water was established with gabion as the research object.Based on the force analysis of gabion,the in⁃fluence of the velocity and depth of the dangerous section to the stability of the throwing materials was studied.The results show that increas⁃ing velocity and water depth can lead to poor stability of the throwing materials in the dynamic water and increasing weight(size)of throwing materials can effectively reduce the displacement and enhance its stability.Finally,some measures are put forward,such as designing a rea⁃sonable weight throwing materials,reserving enough throwing distance or using linked gabion system to ensure the stability.
作者
张亚坤
周彦林
梁建林
ZHANG Yakun;ZHOU Yanlin;LIANG Jianlin(Yellow River Conservancy Technical Institute,Kaifeng 475004,China;Kaifeng Yellow River Civil Engineering Experimental Center,Kaifeng 475004,China;First Mobile Emergency Rescue Team of Kaifeng Yellow River Bureau,Kaifeng 475003,China)
出处
《人民黄河》
CAS
北大核心
2020年第11期37-41,共5页
Yellow River
基金
开封市黄河流域生态保护和高质量发展创新专项计划项目(2019018)
黄河水利职业技术学院青年骨干教师培养计划项目(2019HYGG06)
2020年开封市科技发展计划项目(科技攻关2001021)。
关键词
险工
防汛抢险
铅丝石笼
稳定性
流速
水深
黄河
vulnerable spot
flood control and emergency rescue
gabion
stability
flow velocity
water depth
Yellow River
