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Design of Optical System in Solar Blind Ultraviolet and Study on the Detection Distance

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光学学报 2012年第F12期32卷 267-270页

作者： Jiang Bo Zhou Sizhong Jiang Kai Duan Jing deng xiaoguo Guo Zhili Xi'an Institute of Optics and Precision Mechanics of CAS Xi'an Shaanxi 710119 China University of Chinese Academy of Sciences Beijing 100049 China

Ultraviolet (UV) detection principle and configuration of UV detection system are introduced. The experimental system is designed and established. The system wording at 240~280 nm achieves the focal length of 200 mm and F number of 6. The UV image is converted to visible image at the CCD through the relay system. The estimation method and model are proposed according to the formula of image plane irradiance and imaging, which are based on the UV radiation performance of typical targets and atmospheric transmission performance of UV radiation, combined with the performance parameters of UV warning system. The detection distance of UV warning system for a typical target at different angles is computed and validated. The analysis and conclusion show that the detection distance of UV warning system can increase by changing the performance parameters of detector, such as CCD minimum illuminance, image intensifier's gain, optical system's transmittance and relative aperture.

关键词：紫外线检测原理紫外辐射大气传输

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福山油田绳结暂堵转向压裂工艺

油气井测试 2024年第2期33卷 44-50页

作者：张智勇邓校国付杰杜建洪李凯张大年北京斯迪莱铂油气技术有限公司北京102600 中国石油南方石油勘探开发有限责任公司海南海口570216

海南福山油田储层主要特点薄互层发育,油层厚度小,隔层泥质含量高,使用可溶球和颗粒暂堵剂实现层间暂堵转向,存在暂堵压力响应不明显,颗粒暂堵剂堵塞压裂泵车柱塞阀的问题。通过对暂堵材料、暂堵工艺的改进,使用新型绳结暂堵球,取代了... 详细信息

海南福山油田储层主要特点薄互层发育,油层厚度小,隔层泥质含量高,使用可溶球和颗粒暂堵剂实现层间暂堵转向,存在暂堵压力响应不明显,颗粒暂堵剂堵塞压裂泵车柱塞阀的问题。通过对暂堵材料、暂堵工艺的改进,使用新型绳结暂堵球,取代了以往的可溶球和颗粒暂堵剂;同时在室内开展了薄互层射孔优化、携砂液对孔眼冲蚀规律分析、绳结暂堵球直径大小和数量与射孔孔眼的匹配研究,形成了适应福山油田储层特征的绳结暂堵转向压裂工艺。经福山油田应用17口井27层,暂堵转向有效率82%,单井平均日增油4.28 t/d,取得较好增产效果。该工艺进一步提高了薄互层压裂改造效率,具有良好的推广应用价值。

关键词：福山油田薄互层压裂暂堵转向暂堵剂绳结暂堵球封堵性能优化设计

Crustal P-and S-Wave Velocity Structure of the North China Craton at 36°N from Active-Source Seismic Data and Its Tectonic Implications

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Journal of Earth Science 2022年第3期33卷 642-663页

作者： Xiaofeng Tian Walter DMooney xiaoguo deng Songlin Li Baofeng Liu Hanqi Liu Geophysical Exploration Center China Earthquake AdministrationZhengzhou 450003China U.S.Geological Survey Menlo Park CA94025USA

We present crustal models for seismic P-waves(Vp),S-waves(Vs)and the Vp/Vs ratio across the southern North China Craton along latitude 36°*** results are based on inverse and forward modeling of long-range wide-angle reflection/refraction *** crust of the southern Ordos Block has high lower crustal velocity(7.0 km/s)and a Moho depth of~42 *** contrast,thick sediments and a lower average velocity(compared with the Ordos block)found underneath the Shanxi Graben are likely to be the products of rifting that has occurred since the *** Moho dips,exposed basement rock and higher average crustal velocity beneath the Lüliang Mountain and the Taihang Mountain are characteristic of an orogenic *** Tanlu fault and the Liaocheng-Lankao fault show sharp crustal velocity variations and a Moho *** seismic profile sampled the entire region of the Eastern North China Craton where the cratonic root has been destroyed and the unique crustal structure is correlated with the substantially modified *** crustal seismic velocity model shows a strong correspondence between surface geology,local tectonics and the deep crustal structure.

关键词： North China Craton crustal velocity structure craton destructure tectonics wideangle reflection/refraction

Crustal structure along the Zhenkang-Luxi deep seismic sounding profile in Yunnan derived from receiver functions

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Geodesy and Geodynamics 2018年第4期9卷 334-341页

作者： Zhanyong Gao Yanna Zhao xiaoguo deng Yudong Yang Geophysical Exploration Center China Earthquake Administration

The crustal thicknesses and the Poisson’s ratios under the seismic stations can be calculated by receiver function method with H-κ stacking effectively. But the stacking results are affected to some extent by the average crustal P-wave velocity. To eliminate this effect and get more accurate crustal structure along the Zhenkang-Luxi deep seismic sounding profile which lies in Yunnan Province, we calculate the receiver functions from the teleseismic events recorded by 11 temporary stations as well as 5 permanent ones along the profile and carry out the stacking with Vp obtained from the profile in this study. Our study shows that the crustal thicknesses along the Zhenkang-Luxi profile range from 34.8 km to 41.8 km with an average of 39 km. The crust is thicker in the middle part of the profile and thinner in both sides in general. Dramatic changes of crustal thickness about 3 km are detected across both the Lancangjiang fault and the Xiaojiang fault, which implies that these faults cut through the Moho. The lowest Poisson’s ratio under the stations is 0.22 and the highest is 0.27 with the mean of 0.25, which is lower than the global average value 0.27 in the continental crust. It suggests that most of the crust along the profile lacks mafic component, but contains more felsic substance. The low Poisson’s ratio also indicates that there is no satisfying condition for partial melting. We deduce that the material flow in the middle-lower crust in the southeastern margin of the Tibetan plateau may occur only in the north region of 24°N.

关键词： Receiver function Crustal structure Lancangjiang fault Xiaojiang fault Mid-lower crust flow

Crustal P-wave velocity structure in the northeastern margin of the Qinghai-Tibetan Plateau and insights into crustal deformation

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Science China Earth Sciences 2018年第9期61卷 1221-1237页

作者： Shuaijun WANG Baojin LIU Xiaofeng TIAN Baofeng LIU Xianghui SONG xiaoguo deng Yinan SUN Cejun MA Yudong YANG Geophysical Exploration Center of China Earthquake Administration Zhengzhou 450002 China

The transitional area between the northeastern margin of the Qinghai-Tibetan Plateau, Ordos Block and Alxa Block, also being the northern segment of the North-South Seismic Belt, is characterized by considerably high seismicity level and high risk of strong earthquakes. In view of the special tectonic environment and deep tectonic setting in this area, this study used two seismic wide-angle reflection/refraction cross profiles for double constraining, so as to more reliably obtain the fine-scale velocity structure characteristics in both the shallow and deep crust of individual blocks and their boundaries in the study area, and further discuss the seismogenic environment in seismic zones with strong historical earthquakes. In this paper, the P-wave data from the two profiles are processed and interpreted, and two-dimensional crustal velocity structure models along the two profiles are constructed by travel time forward modeling. The results show that there are great differences in velocity structure, shape of intra-crustal interfaces and crustal thickness among different blocks sampled by the two seismic profiles. The crustal thickness along the Lanzhou-Huianbu-Yulin seismic sounding profile （L1） increases from -43 km in the western margin of Ordos Block to -56 km in the Qilian Block to the west. In the Ordos Block, the velocity contours vary gently, and the average velocity of the crust is about 6.30 km s^-1; On the other hand, the velocity structures in the crust of the Qilian Block and the arc-like tectonic zone vary dramatically, and the average crustal velocities in these areas are about 0.10 km s^-1 lower than that of the Ordos Block. In addition, discontinuous low-velocity bodies （LVZ1 and LVZ2） are identified in the crust of the Qilian Block and the arc-like tectonic zone, the velocity of which is 0.10-0.20 krn s^-1 lower than that of the surroundings. The average crustal thickness of the Ordos Block is consistently estimated to be around 43 km along both Pr

关键词： Northeastern margin of the Qinghai-Tibetan Plateau The Ordos Block Crustal velocity structure Deep seismicsounding

Regional characteristics of the lithospheric structure in the southeast of North China revealed by explosion seismology

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Geodesy and Geodynamics 2021年第2期12卷 110-124页

作者： Zhenyu Fan Jinren Zhao Cejun Ma Mingxin Qu xiaoguo deng Baofeng Liu Yan Hai Geophysical Exploration Center of China Earthquake Administration Zhengzhou 450002China

Based on the blasting seismic detection data obtained in the southeast of North China in recent years,this paper comprehensively analyzes and studies the crust-mantle lithospheric structure and seismological characteristics of different tectonic regions,such as offshore basins,west Shandong uplift,Tanlu fault zone and Jiangsu-Shandong orogenic *** low-velocity Pg waves in Dongying depression and Northern Jiangsu basin reveal the unstable basement structure with extremely thick *** travel time of Pg wave is characterized by relatively low propagation velocity and small crustal thickness of offshore continental margin;the first break time and high apparent velocity of Pg wave in west Shandong uplift indicate that the sedimentary basement is relatively *** Pm wave shows the characteristic of dominant wave in the first-order velocity discontinuity of the crust-mantle interface,which reflects the high crustal velocity and stable structure in west Shandong *** Pm and Pl wave are obviously complicated,which can reflect the crust-mantle lithospheric structure of the transitional zone between Tanlu fault zone and Jiangsu-Shandong orogenic *** small time difference between Pn and PL waves can be regarded as the highly destructive seismological manifestation of Tanlu fault zone on the crust-lithosphere *** on many geophysical phenomena such as electrical structure,density structure and terrestrial heat flow,it is believed that the lithospheric destruction degree of Tanlu fault zone and Jiangsu-Shandong orogenic belt was high during the destruction of the North China Craton.

关键词： Blasting seismic detection Crust-mantle lithospheric structure Tanlu fault zone West Shandong uplift

Study on the basement structure in the southeastern North China by blasting seismic

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Geodesy and Geodynamics 2018年第4期9卷 312-319页

作者： Zhenyu Fan Jinren Zhao Suzhen Pan Cejun Ma Mingxin Qu Yan Hai xiaoguo deng Geophysical Exploration Center of China Earthquake Administration Zhengzhou 450002 China

Since the Mesozoic, southeastern North China Craton has experienced intense crustal thinning and lithosphere destruction. Some of the responses of the deep activity in the upper crust crystalline basement have been retained in a series of tectonic evolution. The study of the upper crust velocity structure,especially the properties of the basement interface, is of great significance for studying the tectonic evolution and seismic hazard in the southeastern part of North China. In this study, we selected Pg waves of the blasting seismic data in the southeastern part of North China in recent years, which reflect the west Shandong uplift, offshore sedimentary basins and the Tanlu Fault zone and the Sulu orogenic transition zone, to study the structural and seismological characteristics of basement in North China Craton. The results of this study showed as follows: First, the obvious lag of Pg wave arrival time in Dongying depression and North Jiangsu basin reveals the thick sedimentary, low velocity and unstable basement structure. Second, the advance Pg wave arrival time with high apparent velocity, which reflects the basement structure of the west Shandong uplift, indicates the thin sediments and the shallow basement. Third, combined with many geophysical phenomena, such as electrical structure, density structure and terrestrial heat flow, we hold that the Tanlu tectonic belt and the Sulu orogenic belt have experienced great lithosphere destruction and there is shallow crust and the thinnest lithosphere in the vicinity of the Tanlu fault zone.

关键词： Blasting seismic detection Southeastern North China Crystalline basement Pg arrival time

Crustal density structure of the southern segment of the Liaocheng-Lankao fault, China

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Geodesy and Geodynamics 2019年第5期10卷 347-355页

作者： Lei Jiang Lanbo Liu Zhiping Xu xiaoguo deng Lipu Yang Wei Xiong Shunqiang Xu Geophysical Exploration Center China Earthquake AdministrationZhengzhou450002China Center for Integrative Geosciences University of Connecticut at StorrsCT06269USA

The 1:200,000 middle-large scale Bouguer gravity anomaly data covering the southern segment of the Liaocheng-Lankao fault(SLLF)and its vicinity are analyzed with two ***,the Bouguer gravity anomaly data are decomposed by two-dimensional(2 D)wavelet to make the family of multi-scale modes correspond with density structure at different ***,a two and half dimension(2.5 D)human-computer interaction inversion of the Bouguer gravity anomaly data are conducted with the constraints provided by two deep seismic sounding profiles(DSS1 and DSS2)crossing the study area to get the crustal density *** on the integrated study,we can draw the following conclusions:1)SLLF appears to be a deep fault with almost vertical dipping and rooted into the uppermost mantle;2)In the middle to upper crust SLLF shows an clear turning patterns and segmentation features;3)In the study area the epicentral distributions of the precisely re-located small earthquakes and the historical large earthquakes have a good correspondence with the turning patterns and segmentation features of SLLF;and 4)The results of the horizontal slices from 2 D wavelet decomposition show that there are significant differences in the density structure on the two sides of the fault.A well-defined concave structure with low density exists in the upper crust of the Dongming Depression on the west side of the fault,with the concave center being estimated at a depth of about 8 *** contrast,the upper crust on the east side presents a relative thinner pattern in depth with a bit higher ***,the low-density structure in the middle crust underneath the fault is presumably caused by the uplift of the upper mantle materials and their intrusion along the deep rupture *** paper clarified the inconsistency of fault system and epicenters of small earthquakes from upper to lower *** results indicated that the fault system plays an important governing role to the seismicity in this

关键词： Southern segment of the Liaocheng-Lankao fault(SLLF) Bouguer gravity anomalies Density structure Dongming depression Multi-scale wavelet decomposition Epicenters of small earthquakes

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基于柔性铰链的压弯模型研究

核技术 2007年第5期30卷 411-413页

作者：邓小国周泗忠熊仁生中国科学院西安光学精密机械研究所

将柔性铰链技术应用于弧矢聚焦晶体单色器中的聚焦研究,在对柔性铰链结构参数研究的基础上,建立起了基于柔性铰链的压弯驱动装置行程与压弯动态半径之间的数学模型,分析了影响压弯半径分辨率的主要因素,并且将这种压弯模型成功应用在上... 详细信息

将柔性铰链技术应用于弧矢聚焦晶体单色器中的聚焦研究,在对柔性铰链结构参数研究的基础上,建立起了基于柔性铰链的压弯驱动装置行程与压弯动态半径之间的数学模型,分析了影响压弯半径分辨率的主要因素,并且将这种压弯模型成功应用在上海同步辐射装置(Shanghai Synchrotron Radiation Facility,SSRF)弧矢聚焦晶体单色器研制项目中。检测结果表明,依据这种压弯模型能够实现弧矢聚焦功能,并达到聚焦光斑性能指标。

关键词：弧矢聚焦晶体单色器柔性铰链微促动器