元宝山露天矿基岩含水层疏干方法研究

以大量的水文地质资料和抽水试验以及相邻矿井放水试验实测数据，对元宝山露天煤矿基岩含水层的可疏必及可利用巷道疏干的方法，进行了分析，论证与研究，通过放水试验，初步证明元宝山露天矿基岩含水层采用巷道疏干的方法是可行的。     

高边坡岩体各向异性和动力特性的测试研究

以李家峡大坝工程为例，对高边坡岩体的各向异性和动力牧场生进行了较详细的测试研究。在对层状岩体的各向异性系数对比分析的基础上，确定了爆破对岩体的破坏影响深度，并采用不同的测试参数综合地反映了断层的动力特性，这些测试成果不仅为大坝岩体的动力稳定分析提供了充足的数据，同时对大坝的建设也有重要的参考价值。     

珠江三角洲软土微结构的定量研究

对用不同长度的PVC管在珠海和广州两地采得的淤泥样柱施于一定荷载，然后在扫描电镜下研究软土受压后在样柱垂深方向上的微结构变化，并将样品的微结构照片扫描，在计算机内进行量化处理。结果表明，样品的孔隙分布分维差随着离施压点距离的增加而逐渐减小，从而得到两者的关系方程。据此，可了解在一定荷载下应力在软土层中向下的衰减趋势。文章还对软土的天然含水量和围压对压缩变形的影响作了初步的讨论。     

土工格栅加筋碎石土大型三轴试验研究

在大型三轴仪上进行了素碎石土和加筋碎石土的三轴排水剪切试验，探讨了加筋碎石土的强度及变形特性；分析了塑料土工格栅的加筋机理，为加筋碎石土的理论计算提供了依据。     

线性石蜡基钻井液的试验研究

近期在室内研制成功了新型的第二代合成基钻井液的代表——线性石蜡基钻井液。首先从大量的试验结果中优选出了线性石蜡基钻井液配方 ,在此基础上 ,对线性石蜡基钻井液的性能进行了系统的评价。研究结果表明 ,优选出的线性石蜡基钻井液配方简单。和柴油基钻井液相比 ,线性石蜡基钻井液具有优良的热稳定性、页岩抑制性、润滑性能和储层保护性能 ,可用作深井复杂地层的钻井液     

对粉喷桩检验方法的认识和探讨

介绍了检验复合地基承裁力及桩身完整性的主要方法静裁荷试验、低应变反射波法，并对检测应满足的前提条件进行了认识和探讨。     

快速法固结试验经验修正系数的探讨

实践证明，常规固定试验（压缩试验）可以采用快速法替代现行规范的慢速法。本文在大量统计对比和相应理论分析基础上提出上海地区经验修正系数K值，以利快速法的推行。     

含粘粒砂土抗液化性能的试验研究

通过对含粘粒砂土所作的试验研究, 包括: 粘粒矿物成分不同、粘粒含量不同的重塑土样所作的室内动三轴试验; X光衍射试验, 试验结果对比分析后, 得出了含粘粒砂土抗液化性能的特性。并得出以下结论: (1)粘粒矿物成分不同, 也引起砂土动力稳定性的变化; (2 )动剪应力强度与粘粒含量并非呈单调增加关系, 而呈抛物线型, 并给出回归方程; (3)含粘粒的砂土, 其抗液化能力最低点总是在粘粒含量 8.5～ 9.5 %之间。     

Evaluation of density in layer compaction using SASW method

SASW test, which is non-intrusive and rapid in the field application, was used to evaluate the layer density in the roller compaction without performing the complicated inversion process. The concept of normalized shear wave velocity was introduced to minimize the effect of confinement in the density evaluation. SASW test was performed to determine the shear wave velocity of the layer, and the free–free resonant column (FF–RC) test was adopted to determine the correlation between the normalized shear wave velocity and density of the site, which is almost unique independent of confinement. Testing and data reduction procedures of both tests were briefly discussed and an evaluation procedure of the field density was proposed by effectively combining in-situ shear wave velocity determined by the SASW test with the correlation between the normalized shear wave velocity and the density determined by the FF–RC test. Finally, the feasibility of the proposed method was verified by performing a field case study at Hoengsung road construction site. Field densities determined by the proposed method matched well with those determined by sand cone tests, showing the potential of applying the proposed method in the field density evaluation.     

Model of rigid and elastic-plastic motion in intraplate blocks and strain status of principal blocks in Chinese mainland

Introduction The Chinese mainland is located in the southeastern part of Eurasia plate and encircled by India, Eurasia, Pacific and Philippine Sea plates. It is one of areas with the strongest tectonic de-formation, especially Qingzang (QinghaiXizang) plateau and NS tectonic zone where the tec-tonic activity is more intensive and intricate. The main part of tectonic activity of Chinese mainland includes a series of tectonic zones and active blocks divided by them. Therefore, the research…