论文部分内容阅读
判断水库坝基饱和砂土地基在地震作用下发生液化的可能性,传统的办法是:依据前苏联弗洛林教授的理论,在饱和砂土地基现场,用5千克6号硝胺炸药,埋深4.5米,进行爆炸,然后量测爆炸前后半径在5米之内的地面平均沉降量,用以判断地基相应地震时发生液化的可能性。淮委水利科学研究所聂守智所长等技术人员,在长期实践中发现,这种方法仅适用于较厚的上下砂层密度均匀的地质条件。 对砂层厚度和上下砂层密度不均匀的地质,聂所长及同事们经长期试验研究后,得出一个爆炸实验方法,能比较准确地判断出平坦地面饱和砂土地基地震液化的可能性。
According to the theory of Professor Florian of the former Soviet Union, on the saturated sand foundation, 5 kg of No. 6 Nitramine Explosives buried depth 4.5 meters for explosion, and then measure the average ground settlement within 5 meters before and after the blast to determine the possibility of liquefaction during corresponding earthquake. Nie Shouzhi, director of Huai Wei Institute of Water Conservancy, and other technicians found in long-term practice that this method is only applicable to thicker and uniform geological conditions of upper and lower sand layers. After a long period of experimental study on the thickness of the sand layer and the unevenness of the density of the upper and lower sand layers, after a long-term experiment and study, an explosion experiment method is obtained, which can more accurately determine the possibility of liquefaction of the ground of saturated sand on a flat ground .