山地丘陵地区物探爆破孔钻机及配套机具的研究与开发

为满足我国山地丘陵地区物探爆破孔施工技术的要求，研究适合土层、岩层钻进用的钻机及工具，对钻机的配套设备进行了开发研究。分析了国内山地丘陵地区物探爆破孔施工技术现状，并着重介绍了研制设计内容及生产试验情况。     

用双孔热解石墨管原子吸收法测定微量金

石墨炉原子吸收法在对化探样品微量金的测试过程中存在因载气进入而使待测样品溅出的问题。利用自制的双孔热解石墨管代替普通石墨管可解决上述问题。通过大量的实验证明,仪器在最佳工作条件下,硫脲介质浓度10g·l-1、解脱时间40min时,获得检出限0 10×10-9、加标回收率为98 4%～103 7%的分析结果。     

隧洞岩溶发育段灌浆检测实例

对于充填物为松散介质的溶洞灌浆检测,孔内声波法由于其能量限制效果较差,而孔内地震法能弥补其不足并在检测中发挥较好作用。本文以万家寨引黄入晋工程6#隧洞岩溶发育段灌浆检测为例,介绍了该方法的应用效果。     

冲击旋转钻进技术新发展

冲击旋转钻进技术是一种高效的碎岩方法，近年来随着施工领域的拓宽取得了很大的进步。简要阐述了冲击旋转钻进技术的发展历程，着重介绍了一些冲击器新品种及其相关的钻进新工艺，分析了该项技术的发展趋势。     

盐渍土与分散性针孔试验影响

通过具体实例,研究了新疆氯盐渍、硫酸盐渍土对针孔试验的影响,认为氯盐渍土因其胶结作用,随着盐量的增加,土样孔径大小、流量变化不大。硫酸盐渍土因其膨胀性,随着盐量的增加,土样孔径、流量减小,对土样的冲蚀破坏作用而不相同。     

SHOULD BESTOW MORE PHYSICAL CONNOTATION ON GRAIN SIZE PARAMETER

1.INTRODUCnONSAn~sizeplaysanimpo~roleinmanyfields,SUChasinndmeDt-laden~ordebrisflow.TheStateofsedimentmovementwhateVertheyaresugunded.jUInpingorbed-loading,isoftencloselyrelatedtOtheirSizes.Thebodyor~forcesbornacaglainareOftendiredproponionedtotheabcorSq~sizeofthisgrain.Thereforesedimentsizeisanimpohalltindextoesedimentcharacteristics.Besides,depositsizeanditsdistributionimplysome~infonnationdepositingfonnationenvironmentandcauseing~hyandgeqlogy.Ina~on.thesizeanditsdistributionareeac…     

地震层析成像在水利水电工程地质勘察中的应用

水利水电工程地质勘察是水利水电工程建设中的基础工作。地震层析成像技术作为一种新的物探方法，通过工程中孔，碉间地质条件的探测，进而评价大坝建筑物的工程地质条件是一种有效的手段。本文介绍了乌江构皮滩水利枢纽的应用效果。     

潜水钻机在漂石和砂卵石漏浆地层中大口径钻孔工法探讨

本文重点介绍在漂石，砂卵石地层中进行大口径φ１．８ｍ桩基施工时，采用钻，抓成孔工艺的实例。     

Three-dimensional Rayleigh hysteresis of oriented core samples from the German Continental Deep Drilling Program: susceptibility tensor, Rayleigh tensor, three-dimensional Rayleigh law

Rayleigh hysteresis, as defined by the well-known Rayleigh relations, has been observed not only when magnetization of pyrrhotite-bearing KTB-samples is measured in parallel to a weak dc magnetic field, but also in experiments where field and measuring directions have been adjusted strictly perpendicularly to each other. Nine-tupels of independent Rayleigh hysteresis loops could thus be compiled. Their characteristic coefficients X ^ijk of initial susceptibility together with the Rayleigh loss coefficients α^jk have been proved to determine completely the samples' weak-field magnetic anisotropy. Interpreting the coefficient matrices ( X ^ijk) and (α^jk) as the tensor of initial susceptibility and the Rayleigh tensor, respectively, generalization of the isotropic Rayleigh relations in terms of corresponding tensor relationships has been suggested for the anisotropic case. Application to the KTB samples showed 3-D Rayleigh hysteresis measurements to be an excellent tool for rock magnetic analysis in terms of ore content and crystalline texture. In particular, a magnetocrystalline double texture of the basal planes of pyrrhotite precipitates and their [1120] directions of easy magnetization have been clearly detected. Surprisingly, the welt-known theorem α= const. X ²_I, formulated by Néel (1942) for the isotropic case, has been found to hold true even in tensor generalization (α_jk) = const ( X ²_jk). To reach sufficient resolution for the measurements performed, a sensitive vibrating coil magnetometer (VCM) has been developed.     

X射线荧光测井井液的影响与校正

X射线荧光测井中 ,井液位于井下探管与井壁之间 ,它的影响不但表现在对特征X射线的吸收 ,而且表现在对源初级射线和特征 X射线的散射。井液的校正采用硬件与软件相结合的方法 ,在硬件上 ,使含有探测器的部分制成单独的短臂 ,有效地保证了探测窗与井壁的良好接触 ;在软件上 ,提出的双散射峰法和散射峰 -逃逸峰法 ,能够校正 0 - 10 mm厚的井液对 X射线荧光测井结果的影响