局部重磁场源全方位成像理论概要(续)   总被引：4，自引：4，他引：0  

安玉林 《物探与化探》2001,25(6):401-409,417

作者近年来首创了"复杂条件下局部重磁场源全方位成像"理论体系。在本文中,概要阐述该理论体系中下延有限二度体复重磁场级数正演通式、复场模值全方位延拓和全方位反演等。  相似文献   

任意多边形间方向关系的计算及其可确定问题     

张桥平  李德仁  何挺 《武汉大学学报(信息科学版)》2002,27(6):632-636

提出了一种符合空间认知规律的栅格化处理的任意多边形间方向关系的计算方法，该方法计算结果与人眼的判断结果非常接近，在此基础上讨论了多边形间方向关系的可确定问题，并提出了一种基于8方向隶属零值个数的两个多边形方向关系可确定程度的判定方法。  相似文献   

非开挖穿河铺设光缆管道工程的施工技术     

刘淮雪  刘宪全等 《中国煤田地质》2002,14(4):75-76

穿越向荡巷河铺设光缆管道工程,采用先进的非开挖导向铺管技术,成功地穿越了110m宽的河流,铺道最大埋深14m。此项工程特点:一次性铺管距离长,深度大,管线多,工期短,精度高。  相似文献   

北京昌平地震台TJ-1体积钻孔应变仪潮汐参数动态特征及其稳定性研究     

唐九安  王勇  刘福生 《华北地震科学》2001,19(4):34-40

介绍了北京昌平地震台 TJ- 1型钻孔体积应变仪 1 989年 7月～ 2 0 0 0年 1 2月期间的观测结果 ,分析了潮汐响应函数的动态特征及其稳定性。由全序列观测数据调和分析所得 :O1波潮汐因子 VO1=0 .791 6± 0 .0 1 2 8、相位滞后 ΔΦ0 1=1 .9°;K1波潮汐因子 Vk1=0 .6 4 42±0 .0 0 88、相位滞后ΔΦk1=- 4.2°;M2 波潮汐因子 VM2 =0 .6 5 0 0± 0 .0 0 3 8、相位滞后ΔΦM2 =-2 .9°。液态地核振荡因子 A=VO1/VK1=1 .2 2 8,比理论值小 6 .5 %。  相似文献   

探地雷达天线方向特性探讨   总被引：1，自引：0，他引：1  

刘志新  王志勇  岳建华 《物探与化探》2001,25(1):45-49

利用电磁波的传播特点,对元天线、对称振子及其天线阵辐射电磁波的方向性做进一步的探讨,并分析各因素对其辐射方向性的影响。  相似文献   

浅谈野外岩心地质编录工作     

阿种明  李细根  王成  王果  谭洪赞  王乐民 《铀矿地质》2001,17(5):314-320

岩心地质编录是收集和观察研究岩心中所赋存的各种地质信息和地质现象的一项重要的基础性地质工作。本文根据具体实践经验，简要介绍了岩心地质编录工作的3个阶段以及贯穿于编录工作始终的取样工作。  相似文献   

Strain and tilt changes measured during a water injection experiment at the Nojima Fault zone, Japan   总被引：2，自引：0，他引：2  

Kunio Fujimori  Hiroshi Ishii  Atsushi Mukai  Shigeru Nakao  Shigeo Matsumoto  Yasuhiro Hirata 《Island Arc》2001,10(3-4):228-234

Abstract In order to make geophysical and geological investigations of the Nojima Fault on Awaji Island, Japan, three boreholes measuring 1800 m, 800 m and 500 m deep were drilled into the fault zone. The fault is one of the seismic source faults of the 1995 Hyogo-ken Nanbu earthquake of M 7.2. A new multicomponent borehole instrument was installed at the bottom of the 800 m borehole and continuous observations of crustal strain and tilt have been made using this instrument since May 1996. A high-pressure water injection experiment within the 1800 m borehole was done in February and March 1997 to study the geophysical response, behavior, permeability, and other aspects of the fault zone. The injection site was located approximately 140 m horizontally and 800 m vertically from the instrument. Associated with the water injection, contraction of approximately 0.7 × 10⁻⁷ str (almost parallel to the fault) and tilt of approximately 1 × 10^-7 rad in the sense of upheaval toward the injection site were observed. In addition to these controlled experiments, the strainmeter and tiltmeter also recorded daily variations. We interpret strain and tilt changes to be related to groundwater discharge and increased ultra-micro seismicity induced by the injected water.  相似文献   

Propagation of tube waves generated by an external source in layered permeable rocks     

A. M. Ionov  G. A. Maximov 《Geophysical Journal International》1996,124(3):888-906

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ENCORE钻孔导斜系统     

谈耀麟 《矿产与地质》1992,6(6):487-491

ENCORE钻孔导斜系统由设计先进的MOLE型固定楔、MULE型活楔、RATTY型扩孔导向矛和DOLPHIN型定向仪组成。可在40－96mm钻孔中进行定向钻进，解决钻孔纠斜或分支孔钻进问题。在分析研究其、工作原理和操作方法基础上进行对比分析，指出优点并介绍了使用效果。  相似文献   

Climate change of the last millennium inferred from borehole temperatures: regional patterns of climatic changes in the Czech Republic — Part III     

L. Bodri  V. ermk 《Global and Planetary Change》1999,21(4):383

Accurate temperature–depth profiles may help to assess the temperature variations associated with the climate changes in the past. Ninety-eight ground surface temperature histories inverted from the temperature–depth borehole logs drilled on the territory of the Czech Republic [Bodri, L., ermák, V., 1995. Climate changes of the last millennium inferred from borehole temperatures: results from the Czech Republic — Part I. Global Planet. Change 11, pp. 111–125; Bodri, L., ermák, V., 1997. Climate changes of the last two millennia inferred from borehole temperatures: results from the Czech Republic — Part II. Global Planet. Change 14, pp. 163–173.] are used to reconstruct the regional patterns of the respective climate change. The climate was mapped for the following periods: 1100–1300 A.D. (Little Climatic Optimum), 1400–1500 A.D., 1600–1700 A.D. (main phase of the Little Ice Age), and for the most recent climate trend after year 1960. Comparison of the obtained maps with the meteorological observations and proxy climatic reconstructions confirmed good applicability of the “geothermal” paleoclimatic reconstructions for the regional studies.  相似文献