天然地层管涌研究与洪水灾害防治.docVIP

天然地层管涌研究与洪水灾害防治 蒋严1. ，蒋欢2 ， 翟洪飞1 （1, 江苏镇江建科建筑科学研究院有限公司，江苏 镇江 212004；2. 辽宁省农业工程研究设计院，辽宁 沈阳110041） 摘要：（细土粒从较粗土粒的孔隙中被水流冲走，小洞成大洞称为管涌）管涌决堤、溢顶泛滥是人类经常遇到的洪水灾难，每年都有大量溃坝事故发生。相关的天然地层管涌研究至今停留在 “实验室模型”“数学模拟” “假设”阶段。本文从土的结构、地质构造方面进行了管涌与洪水灾害关系的研究，两者存在科学与假科学的斗争。研究方法是：以管涌试验资料的统计数据为依据，以第四纪地质沉积规律为准则，以工程实用为目的。土的渗透破坏形式用2mm细料含量法、填充系数法、管涌孔隙直径法三种方法判别。土的临界水力梯度，建议采用IC0.05～0.08。地基发生管涌的可能性，用地质构造分析法和管涌水力基本条件确定。管涌是地质学的研究内容。这些技术可用于工程勘察阶段预知发生管涌的可能性及其位置、减少或阻止洪水灾害和工程事故。 关键词：管涌；临界水力梯度；土的结构管涌分析法；地质构造管涌分析法；加深河床、改造河网。 作者简介：蒋严（1938~ ），男，江苏常州人，主任工程师，1956年参加工作，主要从事岩土工程工作及科学研究。E-mail；jiangyayeah.net. Study on piping of the natural formation And prevention of floods disasters JIANG Yan1，JIANG Huan2，ZHAI Hong-fei1 （1, Jiangsu Zhenjiang Research Institute of Building Science Co., LTD. 212004; 2. Liaoning Agricultural Engineering Researching and Designing Institute, Shenyang 110041,China） Abstract: (Fine soil particles from the pores of the coarse soil particles Was water carried away, a small hole into the big hole known as piping). levees collapsed due to piping, overflow the top proliferation of human often encountered in the flood disaster, Related to the natural formation of piping study so far to stay in the laboratory model and mathematical modeling Assume that stage, In this paper, the structure of soil, geological aspects of the relationship between piping and the flood disaster study。There existed a struggle between science and False science。 the study method is: piping test data based on statistical data to Quaternary deposition of the law as the criterion for practical engineering purposes. Damage of soil permeability in the form with the 2mm fine material content laws, filling coefficient, pore diameter piping are three ways to determine the law. Critical hydraulic gradient of soil, recommended Ic 0.05 ~ 0.08. The possibility of piping in foundation is determined by the method of geological analysis and the basic conditions of piping hydraulic. Piping is the geology of the research