矿震及其深井水位的异常响应

简要介绍了山东省陶庄煤矿的二次矿震及其并水位的同震效应与震前异常。结果表明，矿震活动与天然地震活动在时间上有同步性，并且二次矿震的井水位同震效应形态与震前异常持续时间有差异，而这种差异主要同震源体的破坏特征有关。

Numerical Analysis of Self-wastage Phenomena Caused by Sodium-Water Reaction in Sodium-Cooled Fast Reactor throuah Simulant Experiment

A water leakage on the surface of heat transfer tube in a steam generator of sodium-cooled fast reactor causes SWR （sodium-water reaction）. The SWR damages the leak surface and gives rise to the leak enlargement. Most of initial leakage starts from micro leak （less than 0.5 g/s）. However, the leak rate increases more than two orders of magnitude and the resultant leak damages surrounding heat transfer tubes and it brings secondary failure of the heat transfer tube. Evaluation of the leak enlargement is necessary to assess the leak rate increase, so that evaluate the possibility of secondary failure. In this study, a simulant experiment, which uses neutralization reaction, is proposed to reproduce the leak enlargement. To examine the feasibility of the experiment, numerical simulations are carried out. From the result, a funnel-shaped nozzle enlargement is observed and the shape similar to the shape of the enlarged nozzle from the SWAT （sodium-water reaction test loop） experiment.

柴达木盆地南缘荒漠生态系统主要建群植被土壤水分动态特征

通过在柴达木盆地南缘开展白刺、合头草、梭梭以及合头草＋梭梭群系等建群植被的土壤水分观测，分析该地区主要建群植被的土壤水分季节变化和垂直变化，研究土壤一植被一水分的关系，揭示柴达木盆地主要建群植被土壤水分动态特征，合头草＋梭梭群系根系生长集中而且发达，植被在吸收水分时，植被水势高于土壤水土，植被根系周边的土壤水分向植被的根系附近运动，土壤含水率较高，使得梭梭＋合头草群系获得较好的生长条件而分布较广，白刺、梭梭、合头草等由于生长单一，根系相对稀疏，根区水势较小，其土壤含水量较小，对干旱荒漠条件的适应能力较梭梭＋合头草群系弱。