吴堡矿区横沟井田矿井充水因素评价

吴堡矿区赋存着丰富的煤炭资源,但开采技术条件较复杂,其中水文地质条件复杂是影响煤炭开采的主要不利开采技术条件。本文依据横沟井田勘探资料,较全面地分析了井田水文地质条件,并着重评价了井田矿井充水因素。认为黄河水对横沟井田煤炭开采无影响;奥灰承压水对山西组煤层开采在正常地段不会造成危害,对太原组煤层开采有很大的威胁。并提出太原组煤层能否开采利用,还需进一步作详细地质勘查研究工作。     

郴州华塘煤矿采空区地面塌陷的影响因素及防治措施探讨

郴州华塘煤矿采空区地面塌陷的影响因素是采矿方法、煤层特征(厚度、产状和埋深)、顶板岩石力学性质、地表水和地下水综合作用的结果.采矿方法的改进和煤柱的留设与保护是防治塌陷的主要措施,监测工作是不可缺少的重要手段.     

Homogeneity of the Geochemical Reference Material BRP-1 (Paraná Basin Basalt) and Assessment of Minimum Mass

Reference materials (RM) are required for quantitative analyses and their successful use is associated with the degree of homogeneity, and the traceability and confidence limits of the values established by characterisation. During the production of a RM, the chemical characterisation can only commence after it has been demonstrated that the material has the required level of homogeneity. Here we describe the preparation of BRP-1, a proposed geochemical reference material, and the results of the tests to evaluate its degree of homogeneity between and within bottles. BRP-1 is the first of two geochemical RM being produced by Brazilian institutions in collaboration with the United States Geological Survey (USGS) and the International Association of Geoanalysts (IAG). Two test portions of twenty bottles of BRP-1 were analysed by wavelength dispersive-XRF spectrometry and major, minor and eighteen trace elements were determined. The results show that for most of the investigated elements, the units of BRP-1 were homogeneous at conditions approximately three times more rigorous than those strived for by the test of "sufficient homogeneity". Furthermore, the within bottle homogeneity of BRP-1 was evaluated using small beam (1 mm²) synchrotron radiation XRF spectrometry and, for comparison, the USGS reference materials BCR-2 and GSP-2 were also evaluated. From our data, it has been possible to assign representative minimum masses for some major constituents (1 mg) and for some trace elements (1-13 mg), except Zr in GSP-2, for which test portions of 74 mg are recommended.     

长河煤矿充水因素分析及防治水措施

长河煤矿为地质构造中等复杂区，其矿区地质及水文地质条件表明，地表水、直接充水含水层煤系砂岩裂隙水、老窑水、构造断裂带水都可构成该矿井开采的充水因素，且其涌水量大小与大气降水关系密切。针对矿井开采的具体情况提出了一系列的防治措施，并取得了良好的效果，对煤矿水害的防治有一定的指导意义。     

节气气候变化与上消化道出血的关系研究

通过对2000-2005年龙岩市第一医院上消化道出血（UGB）患者入院时的节气归属及当时气象资料的收集,分析不同节气气候变化与UGB的关系,运用最优子集回归方法建立关系模式进行综合分析,得出影响上消化道出血发病趋势的关键气象要素是节气最高气温、最低气温、平均水汽压;通过节气气候因素对UGB影响的认识,提出相应的预防保健措施。     

广西冰雹气候统计分析及减灾对策

统计分析了1956年以来以来广西冰雹的时空分布特征及影响因子,并提出了减灾对策。广西冰雹集中在2～5月,主要发生在14～19时;北多南少,西多东少,山区比沿海多;大范围冰雹过程可分为高原东部深槽型;南支槽型;华北深槽型。其中南支槽是冰雹天气的最主要系统;冰雹次数与拔海高度正相关,与年平均气温负相关。     

Comparison of Two Fading Filters anc Adaptively Robust Filter

Two kinds of fading filters and their principles are introduced. An adaptive robust filter is given with corresponding principle. The basic abilities of the fading filters and adaptively robust filter in controlling the influences of the kinematic model errors are analyzed. A practical example is given. The results of the fading filter and adaptively robust filter are compared and analyzed.     

遥感技术在三峡库区千将坪滑坡研究中的应用

 2003年7月13日，三峡库区湖北省秭归县沙镇溪镇千将坪村发生特大型滑坡灾害后，利用先进的数字遥感技术，结合滑坡前 后的高分辨率的遥感数据、地形图资料和野外所测的GPS控制点，制作出研究区滑坡前后的数字高程模型(DEM)，同时采用合理的图 像处理技术，获得了滑坡前后正射影像图。利用三维可视化技术，采用人机交互解译滑坡，详细的对比解译滑坡前后的影像，分别 对滑体的滑动方向、距离和堆积体面积进行了定量计算，结合勘查资料估算出其体积约为1 500万方，综合地质学、灾害学原理和 地理空间信息技术等科学分析了千将坪滑坡的形成条件，认为千将坪在“7.13”滑坡之前为一特大型顺层古滑坡，而“7.13”滑坡 是古滑坡的大规模复活，三峡库区蓄水和降雨综合作用是促使滑坡复活的主要诱发因素。     

武汉台重力长期变化分析

通过对武汉台超导重力仪９年多连续观测的重力长期变化资料分析,得到长周期重力潮汐参数、该频段气压回归因子Ｃ、极移重力效应因子Ｐ和长周期气压回归因子Ｃ１分别为：Ｃ：－０．３８３（±０．０１４）×１０－８ｍ·ｓ－２／１００Ｐａ;Ｍｍ：１．１１７３（±０．０７２０）,－１°．１７８７（±３°．６９４３）;Ｍｆ：１．１４３２（±０．０４８４）,５°．２２３５（±２°．４２５３）;Ｍｔｍ：１．２２７６（±０．２２４５）,－１７°．５６４８（±１０°．４７５８）;Ｃ１：－０．３１２（±０．０１５）×１０－８ｍ·ｓ－２／１００Ｐａ;Ｐ：１．９０４７（±０．０６９５）．重力长期变化在Ｃｈａｎｄｌｅｒ周期附近的振幅约为３．２６×１０－８ｍ·ｓ－２。     

煤层割理研究在韩城矿区煤层气评价中的意义

探讨了煤层割理的成因、分类及主要影响因素,分析了韩城矿区主要煤层割理的发育特征及其对煤层气赋存和开发的控制作用。