在数据库中采用双表结构表述地震前兆数据结构的方法研究

地震前兆观测涉及到电磁学科、地下流体学科、形变学科等众多观测种类和方法，其相应产出的观测数据种类和构成十分繁杂，给地震前兆观测数据结构标准的制定带来巨大困难。中提出双表结构的方法，即在数据库中采用相互关联的二个表结构(索引表和数据表)来表述一个观测数据项的方法。与现行的其他结构表示相比较，双表结构法有着众多的优点和长处。首先，它是一种普适性的观测数据表示方法，目前实际工作所获取的各种地震前兆观测数据均可采用此方法加以表示，这样就大大降低了构建庞大的地震前兆观测数据库的复杂度；其次，它有效地解决了支持可变采样率这样的技术难题，对延长地震前兆观测数据结构标准的生命周期有着潜在的重要意义，这也是与现实的地震前兆观测的需求相吻合的。另外，双表结构法还有效地降低了数据存储冗余，提供了快速检索数据的机制。总之，双表结构法是以有限增加单个数据表示复杂性来大大降低整个地震前兆观测数据库构成复杂性的方法。中提出用具有树形特征的主表结构来阐述采用双表结构构建地震前兆观测数据库及应用系统的方法。     

RGMAP系统在1：5万区调中的应用

根据RGMAP系统在崇阳县幅1：5万区调过程中的应用实践．阐述了数字区调过程中的数字路线、数字实测剖面数据采集以及室内数据整理、地质图编稿和专题图件制作的工作流程和方法，在此基础上对RGMAP综合应用进行了展望．     

神经网络在判别煤矿突水水源中的应用

矿井突水水源的识别是矿井防治水工作的基础，快速准确地判别突水的来源对整个矿井的安全生产起着十分重要的作用。以峰峰矿区梧桐庄矿为例，应用神经网络的方法，对矿井突水水源进行了系统研究。结果表明，运用该方法取得了较好的效果，并可以用此模型来解决类似的评价和判别问题。     

面雨量不均对GIUH非线性改正探讨

地貌单位线(GIUH)基于流域地貌特征和概率方法，在我国许多地区得到广泛应用。针对面雨量分布不均问题，通过分析初始概率的变化，考虑GIUH的非线性改正，并用实际资料进行了验证。     

水泥搅拌桩与锚杆组合支护结构的力学参数研究

水泥搅拌桩--锚杆组合支护结构是一种新型的组合支护结构,笔者采用有限元方法进行各相关力学参数研究,分析了该组合支护结构的受力特性及变形性态.通过计算结果与实测数据的比较,表明本文所得结论对该组合支护结构的应用有一定的指导价值.     

苏干湖沉积碳酸盐稳定同位素古气候意义的初步研究

苏干湖盆地是嵌套在柴达木盆地中的一个封闭盆地。苏干湖是盆地地表水和地下水的汇集中心,也是地下水的循环基准面,由源自小苏干湖的苏干河及其以南的天鹅河、绿草河与水鸭子河补给,这些河流均为地下水出渗形成的河流,具有较低的矿化度;湖水面积103.68km²,平均矿化度31.83g/L,现代湖水为ClSO₄NaMg型。盆地地势东高西低,平均海拔高度3000m;盆地西部多年平均降水量为18.7mm,蒸发量为2967.2mm,属于极端干旱区;苏干湖地区年平均气温为0～3℃;盆地植被稀少,盆地东部山麓地带、中部努呼图一带以及地下水出渗的湖泊东部小苏干湖     

旋喷止水帷幕在北京恒润中心工程中的应用

介绍了止水帷幕在北京恒润中心工程基坑开挖中的应用，对止水帷幕的设计以及三重管高压旋喷桩的施工工艺进行了论述。     

钻孔灌注桩桩侧桩端后压浆技术在武汉瑞通广场的应用

桩侧和桩端后压浆应在钻孔灌注桩成桩后3~7天进行。压浆过程中应控制灌浆压力以避免过分压裂土层。压浆量是影响后压浆质量和提高单桩承载力的关键因素。在渗透性小的地层后压浆机理主要是压密注浆，在渗透性大的地层的后压浆机理主要是渗透注浆。通过桩侧和桩端后压浆，瑞通广场钻孔灌注桩单桩承载力特征值提高了67%。     

A precise monitoring of snow surface height in the region of Lambert Glacier basin-Amery Ice Shelf,East Antarctica

The net surface snow accumulation on the Antarctic ice sheet is determined by a combination of precipitation, sublimation and wind redistribution. We present a one-year record of hourly snow-height measurements at LGB69 (70°50'S, 77°04'E, 1850 m a.s.l.). east side of Lambert Glacier basin (LGB), and 4 year record at G3 (70°53'S, 69°52'E, 84 m a.s.l.), Amery Ice Shelf (AIS). The measurements were made with ultrasonic sensors mounted on automatic weather stations installed at two sites. The snow accumulation at LGB69 is approximately 70 cm. Throughout the winter, between April and September, there was little change in surface snow height (SSH) at the two sites. The negative SSH change is due to densification at LGB69, and is due to both ablation and densification at G3. The strongest accumulation at two sites occurred during the period between October and March (accounting for 101.6% at LGB69), with four episodic increasing events occurring during 2002 for LGB69, and eight events during 1999-2002 for G     

海南博螯沿岸地貌与人类活动的潜在影响

The Boao coastal system along the eastern coast of Hainan Island is a dynamic delta-tidal inlet-barrier formed during the late Holocene. The delta developed inside a shallow lagoon barred by a sandy barrier with a narrow, shallow tidal inlet opening. Two major distributary channels separated by small islands characterize the delta. The lagoon is silting up receiving and trapping sediments from both the river and, in minor measure during storms, through the tidal inlet opening and barrier washovers. The barrier at the tidal inlet is highly dynamic and changes its form, accreting (migrating spit) against the inlet during fair-weather conditions and being eroded during storms and river floods.The delta has almost completely filled the lagoon and major concerns exist on the effect that ongoing large development plans may have on the environment. These concerns include the effect on floods and rate of siltation once banks of the islands have been stabilized and floodwater and sediment load are impeded from spreading over the lowlands, and the effect of increasing pollutant loads from the new facilities on the ecosystems of the increasingly restricting lagoon water and on the seashores.