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零相位改进型最小熵反褶积方法

石油地球物理勘探 1996年第3期31卷 359-366页

作者：李国发李观寿张立勤大港石油管理局物探公司计算中心 300280 大港石油管理局地质研究院

本文对常规最小熵反褶积方法中存在的一些问题进行了探讨和改进：①为克服最小熵反褶积对弱反射的压制作用，本文采用对数型规范方差模准则；②为了减少最小熵反褶积对输入记录相位的改造，本文对反褶积算子加入了零相位约束；③为了克... 详细信息

本文对常规最小熵反褶积方法中存在的一些问题进行了探讨和改进：①为克服最小熵反褶积对弱反射的压制作用，本文采用对数型规范方差模准则；②为了减少最小熵反褶积对输入记录相位的改造，本文对反褶积算子加入了零相位约束；③为了克服局部极值问题并加速收敛，本文按输入记录傅氏谱的特征给出了确定迭代初始滤波器的方法。理论和实际资料处理表明，该方法是一种较理想、较实用的反褶积方法。

关键词：零相位最小熵反褶积地震勘探地震数据

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石油钻机起升系统的动力学模型和分析

石油学报 1989年第2期10卷 94-103页

作者：段德和石油勘探开发科学研究院

本文对石油钻机起升系统动力学模型的简化进行了探讨,就钻具有刚体位移和无刚体位移两种情形建立了简化模型,并对大钩载荷的变化规律进行了初步分析。在一般情况下,大钩动载在起升初期衰减迅速,而后衰减缓慢,并伴有频率的变化,而且起升... 详细信息

本文对石油钻机起升系统动力学模型的简化进行了探讨,就钻具有刚体位移和无刚体位移两种情形建立了简化模型,并对大钩载荷的变化规律进行了初步分析。在一般情况下,大钩动载在起升初期衰减迅速,而后衰减缓慢,并伴有频率的变化,而且起升加速阶段的钩载均值高于后续阶段的钩载均值。应用作者编制的程序进行了实例计算,计算结果与实测结果吻合较好。

关键词：石油钻机起升系统动力学模型

Indirect-approach method for specified-end points seismic ray tracing in three dimen-sional inhomogeneous media

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Acta Seismologica Sinica(English Edition) 1998年第3期11卷 56-63页

作者：徐朝繁张先康杨健杨卓欣邓宏钊宋松岩 1. Research center of exploration Geophysics State Seismological Bureau 450003 Zhengzhou China

Generally speaking, the factors of both medium and tectonic that give rise to heterogeneity of the earth crust and mantle structures should be taken into account simultaneously in three dimensional seismic ray tracing. In this paper, the three dimensional structure models are constructed with the model similar to generation system in computer aid design and manufacturing (CAD/CAM). Based on the algorithm proposed by Cerveny et al . for complete seismic ray tracing in complex three dimensional structures, a new technique called the indirect approach method for two point seismic ray tracing in three dimensional laterally heterogeneous media has been put forward, and its numerical computing examples were given.

关键词： 3 D ray tracing crust mantle structure indirect approach method

长白山天池火山研究区地壳三维界面与速度分布联合成像

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CT理论与应用研究（中英文） 2000年第Z1期9卷 68-69页

作者：杨卓欣张先康赵金仁王夫运张成科中国地震局地球物理勘探中心郑州450002

迅速发展并得到广泛应用的空间深地震测深技术通过采用三维数据采集的观测系统，利用三维层析技术，以求获得区域地壳三维分层结构和三维速度分布图像。它与传统的二维宽角反射－折射剖面技术相结合，可以有效地研究区域性地壳结构，特... 详细信息

迅速发展并得到广泛应用的空间深地震测深技术通过采用三维数据采集的观测系统，利用三维层析技术，以求获得区域地壳三维分层结构和三维速度分布图像。它与传统的二维宽角反射－折射剖面技术相结合，可以有效地研究区域性地壳结构，特别是壳内深断裂和低速层的空间展布特征。Kanasewich等(1985)给出了利用空间深地震测深资料重建地壳三维界面的方法，我们在其方法的基础之上，进一步提出地壳三维界面和速度分布联合反演的方法。正问题的计算是在Chander(1977)关于三维平界面的快速两点追踪算法上的改进，在获得界面三维反演结果的基础之上，利用剩余走时残差，采用模型不分块反演技术(Tarantola，Nercession 1986)重建地壳三维速度图像。1998年国家地震局地球物理勘探中心在长白山火山区实施了三维深地震测深观测，目的是研究天池火山的岩浆系统。利用本次实验所获得的780余个PmP波走时数据，采用上述的方法重建了研究区莫霍界面和地壳三维速度分布图像。研究结果表明，本区莫霍界面由北东方向向南逐渐加深，在天池火山口下达最深，并且被一些可能存在的地壳厚度陡变带(或深断裂)所切割。在东西方向莫霍面由西向东缓缓加深，其变化较南北方向缓和。特别值得注意的是，存在着一条近北东方向的莫霍面深度陡变带(或深断裂带)从天池火山口西部穿过，相应位置与马鞍山—三道白河地堑型断裂相一致，该断裂带可能对天山火山喷发时岩浆的运移起到重要作用。深度为15km和25km的P波速度图像表明，在天池火山口下分布着近南北走向明显的低P波速度分布，其南北方向延伸的范围约为80－90公里左右。比较这两个深度上的低P波速度体的分布特点，可以看出这个低P波速度体尺度随深度逐渐变小，但在25km深度处仍清晰可见，这表明该区岩浆自上地幔侵入地壳的“痕迹”，这也意味着，长白山天池火山的岩浆系统极有可能延伸到上地幔或更深一些。

关键词：三维界面三维速度地壳地球外壳地球内部速度分布分布(力学) 长白山天池火山

多光谱法结合分子对接探究4种黄酮与β-乳球蛋白的相互作用

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食品安全质量检测学报 2024年第13期15卷 77-88页

作者：闫焕康柱张炎周素珍范金波渤海大学食品科学与工程学院生鲜农产品贮藏加工及安全控制技术国家地方联合工程研究中心锦州121013

目的探究4种黄酮[柚皮苷(naringin,Nar)、黄芩素(baicalein,Bai)、白杨素(chrysin,Chr)和漆黄素(fisetin,Fis)]与β-乳球蛋白(β-lactoglobulin,β-Lg)的相互作用。方法首先采用分子对接技术模拟预测4种黄酮与β-Lg的结合位点,再利用... 详细信息

目的探究4种黄酮[柚皮苷(naringin,Nar)、黄芩素(baicalein,Bai)、白杨素(chrysin,Chr)和漆黄素(fisetin,Fis)]与β-乳球蛋白(β-lactoglobulin,β-Lg)的相互作用。方法首先采用分子对接技术模拟预测4种黄酮与β-Lg的结合位点,再利用荧光光谱法研究4种黄酮与β-Lg的荧光猝灭作用及作用机制,并计算相关参数,最后通过多种光谱法分析4种黄酮对β-Lg空间构象的变化。结果分子对接结果表明Nar和Fis结合在β-Lg的疏水空腔口处,Bai与Chr与β-Lg的结合位点在β-Lg的外表面。荧光光谱结果表明,4种黄酮对β-Lg均产生静态猝灭,结合常数均在104~107数量级,说明Nar/Bai/Chr/Fis均与β-Lg结合紧密且形成稳定的复合物;热力学参数分析表明Nar/Bai/Chr/Fis与β-Lg的结合为自发进行,其中Nar/Bai与β-Lg作用力类型是氢键和范德华力, Chr/Fis与β-Lg是疏水相互作用。同步荧光光谱、三维荧光光谱、紫外-可见光吸收光谱和傅里叶变换红外光谱结果表明,Nar/Bai/Chr/Fis与β-Lg发生相互作用后使β-Lg的空间构象发生变化。结论 4种黄酮均能与β-Lg结合,为黄酮类化合物与生物大分子作用机制研究及对活性成分的保护和利用提供理论支持。

关键词：柚皮苷黄芩素白杨素漆黄素 β-乳球蛋白多光谱法

Judgement and interpretation of S-wave data on the Beijing-Fengzhen DSS profile

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Acta Seismologica Sinica(English Edition) 1998年第1期11卷 68-77页

作者：宋松岩周雪松张先康邱淑燕龚怡宋建立 1. Research center of exploration Geophysics State Seismological Bureau 450003 Zhengzhou China

By use of S wave information from three component records of wide angle reflection/refraction Beijing Fengzhen DSS profile (340.0 km) and its adjacent area, several main S wave phases (wave groups) of the crust and the top of upper mantle have been picked up and identified with digital processing technique. With reference to the results from P wave interpretation, 2 D structures, including S wave velocity vS and Poisson ratio μ , are calculated. After a comprehensive study with information from near vertical reflection, geology and other geophysical explorations, the deep structural configuration of this region is presented and relevant inferences are drawn from the above result: crustal thickness along the profile tends to increase westwards, from 35.0 km at Shunyi to 42.0 km at Fengzhen; there exist three low velocity bodies in the lower crust east of Yanqing, in the middle crust below Yanqing Zhuolu and in the upper crust west of Tianzhen, respectively; from east to west, there is also a crust mantle transitional zone about 5.0～9.0 km thick; in most parts of the region, μ value is 0.25 in the upper and middle crust, 0.27 in the lower crust and 0.28 on top of the upper mantle, indicating that the upper and middle crust is characterized by brittleness, and the lower crust and top of upper mantle is characterized by ductility; between Yanqing Zhuolu, the low μ values of the upper crust suggest that cracks (or pores) grow in the rock masses which present a dry (or gas filled) state, while the high μ values in the middle crust may reflect a fluid filled (or partially fusion) state of the rock masses. On the basis of the characteristics of phases and lateral variation features of μ values, several deep seated faults in this region are ascertained. Most earthquakes occurred near these faults where μ values vary significantly, and concentrate in the brittle rock masses with low μ values.

关键词： Yanqing Huailai basin DSS profile S wave μ value ultra crustal fault

江南钨矿带大雾塘特大型钨矿床的发现及找矿勘查启示

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华南地质 2024年第2期40卷 343-352页

作者：钟浩余牛奔卢观送陈德康但小华江西省地质局第二地质大队江西九江332000

大雾塘特大型钨矿床位于赣西北九岭地区,其发现是近年来在江南钨矿带大湖塘矿集区内取得的又一重大找矿成果,总结该矿床找矿勘查经验对指导本地区新一轮找矿突破战略行动具有重要启示作用。找矿思路的转变——由以石英大脉型黑钨矿化为... 详细信息

大雾塘特大型钨矿床位于赣西北九岭地区,其发现是近年来在江南钨矿带大湖塘矿集区内取得的又一重大找矿成果,总结该矿床找矿勘查经验对指导本地区新一轮找矿突破战略行动具有重要启示作用。找矿思路的转变——由以石英大脉型黑钨矿化为中心转变为以花岗岩浆期后热液控制的细脉浸染型白钨矿化为主要目标,是大雾塘钨矿床找矿突破的关键。产于晋宁期岩体中的燕山期中细粒白云母花岗岩是本地区最有效的找矿线索,隐爆角砾岩为矿化中心部位。结合赣西北地区钨、铜矿共伴生的特征,提出在修武地区“就钨找铜”、在九瑞地区“就铜找钨”的找矿思路。

关键词：江南钨矿带大雾塘钨矿床勘查启示

Deep seismic sounding investigation into the deep structure of the magma system in Changbaishan-Tianchi volcanic region

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Acta Seismologica Sinica(English Edition) 2002年第2期15卷 143-151页

作者：张先康张成科赵金仁杨卓欣李松林张建狮刘宝峰成双喜孙国伟潘素珍 Research center of exploration Geophysics

The magma system of Changbaishan-Tianchi Volcanic region is studied with three-dimensional deep seismic sounding (DSS) technique. The results show that the magma system of Changbaishan-Tianchi volcanic region, mainly characterized by low velocity of P wave, can be divided into three parts in terms of depth. At the depth range of 9-15 km, the distribution of the magma system is characterized by extensiveness, large scale and near-SN orientation. This layer is the major place for magma storage. From the depth of 15 km down to the lower crust, it is characterized by small lateral scale, which indicates the 'trace' of magma intrusion from the upper mantle into the crust and also implies that the magma system most probably extends to the upper mantle, or even deeper.(less than 8-9 km deep), the range of magma distribution is even smaller, centering on an SN-oriented area just north of the Tianchi crater. If low velocity of P wave is related to the magma system, it then reflects that the magma here is still in a state of relatively high temperature. In this sense, the magma system of Changbaishan-Tianchi volcanic region is at least not 'remains', in other words, it is in an 'active' state.

关键词： Changbaishan-Tianchi volcanic region 3-D deep seismic sounding magma system

Interpretation　of　S-wave　data　from　Tai′anXinzhou　DSS　profile　and　its　relationship　with　Xingtai　earthquakes

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Acta Seismologica Sinica(English Edition) 1997年第1期10卷 16-26页

作者：宋松岩周雪松王椿镛张先康宋建立龚怡 1. Research center of exploration Geophysics State Seismological Bureau 450003 Zhengzhou China2. Institute of Geophysics State Seismological Bureau 100081 Beijing China

On the basis of S wave information from Tai′an Xinzhou DSS profile and with reference to the results from P wave interpretation, the 2 D structures , including S wave velocity V s, ratio γ between V p and V s; and Poisson′s ratio σ , are calculated; the structural configuration of the profile is presented and the relevant inferences are drawn from the above results. Upwarping mantle districts (V s≈4.30 km/s)and sloping mantle districts (V s≈4.50 km/s) of the profile with velocity difference about 4% at the top of upper mantle are divided according to the differences of V s , γ and σ in different media and structures, also with reference to the information of their neighbouring regions; the existence of Niujiaqiao Dongwang high angle ultra crustal fault zone is reaffirmed; the properties of low and high velocity blocks(zones) including the crust mantle transitionalzone and the boudary indicators of North China rift valley are discussed. A comprehensive study is conducted on the relation of the interpretation results with earthquakes. It is concluded that the mantle upwarps, thermal material upwells through the high angle fault, the primary hypocenter was located at the crust mantle juncture 30.0～33.0 km deep, and additional stress excited the M S=6.8 and M S=7.2 earthquakes at specific locations around 9.0 km below Niujiaqiao Dongwang, the earthquakes took place around the high angle ultra crustal fault and centered in the brittle media and rock strata with low γ and low σ values.

关键词： S wave velocity wave velocity ratio upwarping and sloping mantle districts crust mantle transitional zone ultra crustal fault zone