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Journal of Earth Science 2021年第1期32卷 1-7页

作者： Junjie Wu Xiaodong Chen Yi Yang Qingquan Zhi Xingchun Wang Jie Zhang Xiaohong Deng Yi Zhao Yue Huang Institute of Geophysical and Geochemical exploration Chinese Academy of Geological SciencesLangfang 065000China Laboratory of Geophysical Electromagnetic Probing Technologies Ministry of Land and ResourcesLangfang 065000China School of Geology Engineering and Geomatics Chang'an UniversityXi'an 710000China

exploration of deep mineralization,particularly where the mineralization of interest is covered by a conductive overburden,is still a challenge for the conventional transient electromagnetic(TEM)method,which measures TEM response using induction coils as the ***,sensors such as fluxgate and superconductive quantum interfere device(SQUID)magnetometers can measure the B-field directly,which can provide more reliable deep information for mineralization *** this paper,we report on the research and development of our newly developed high-temperature su-perconductor(HTS)SQUID magnetometer,which is cooled by liquid nitrogen at 77 K,and its applica-tion in TEM measurement for deep exploration in a gold deposit in *** improved SQUID magnetometer version has a good performance with noise(60 fT/√Hz),slew rate(0.8 mT/S),dynamic range(100 dB),sensitivity(6.25 mV/nT),and bandwidth(DC-20 kHz).To find deep and peripheral ore in the Baiyun gold deposit located in Liaoning Province,NE China,both the SQUID magnetometer and induction coil were used for TEM data *** show that TEM can detect the distribution of local strata and the faults contained within *** also indicate that the SQUID magnetome-ter has superior response performance for response over geological targets with slower decay time when compared to the induction coil *** SQUID magnetometer is more sensitive at observing the induced-polarization effect which is closely related to the ore-controlling faults.

关键词： TEM HTS SQUID magnetometer B-field deep exploration the Baiyun gold deposit

Inverse spectral decomposition using an I_p-norm constraint for the detection of close geological anomalies

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Petroleum Science 2020年第6期17卷 1463-1477页

作者： San-Yi Yuan Shan Yang Tie-Yi Wang Jie Qi Shang-Xu Wang State Key Laboratory of Petroleum Resources and Prospecting CNPC Key Laboratory of Geophysical ExplorationChina University of PetroleumBeijing 102249China SINOPEC Petroleum exploration and Production Research Institute Beijing 100083China ConocoPhillips School of Geology and Geophysics University of OklahomaNormanOK 73019-0390USA

An important application of spectral decomposition(SD)is to identify subsurface geological anomalies such as channels and karst caves,which may be buried in full-band seismic ***,the classical SD methods including the wavelet transform(WT)are often limited by relatively low time-frequency resolution,which is responsible for false high horizonassociated space resolution probably indicating more geological structures,especially when close geological anomalies *** address this issue,we impose a constraint of minimizing an lp(0deep channels and the karst slope fracture zone.

关键词： Spectral decomposition Seismic interpretation Inverse problem High resolution deep exploration

Development of multi-channel observation and inversion for IP electrical sounding method

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Transactions of Nonferrous Metals Society of China 2014年第3期24卷 816-823页

作者：刘海飞柳建新郭荣文童孝忠龚露彭艳华中南大学地球科学与信息物理学院长沙410083 中南大学有色资源与地质灾害探查湖南省重点实验室长沙410083

In order to improve the exploration effect of deep non-ferrous mineral resources, multi-channel observation methods for induced polarization （IP） electrical sounding data and their inversion imaging technology are studied. First of all, four multi-channel observation methods are developed based on conventional IP electrical method, namely three-electrode and four-electrode arrays of unilateral and bilateral current transmitting. Then the maximum smoothness constrained inversion method of the least squares sense for IP electrical sounding data is proposed, and the inversion software is programmed. Finally, the simulation and inversion results of geo-electrical model for the proposed observation methods are analyzed. And the comparison results show that three-electrode array of bilateral current transmitting gives the best result, but the intensity in field work is larger than others; unilateral three-electrode and four-electrode arrays give the better results. Taking detection results and convenience of field exploration work into consideration, these two methods are more suitable for practical application; bilateral observation method of four-electrode array is not suitable for the detection of the steep ore bodies.

关键词： IP electrica-1 sounding multi-channel observation deep exploration inversion imaging

Electrical structure identification of deep shale gas reservoir in complex structural area using wide field electromagnetic method

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Applied Geophysics 2024年第3期21卷 564-578,619,620页

作者： Gu Zhi-Wen Li Yue-Gang Yu Chang-Heng Zou Zhong-Ping Hu Ai-Guo Yin Xue-Bo Wang Qinag Ye Heng Tan Zhang-Kun Sichuan Natural Resources Investment Group Geophysical exploration Institute Co. LtdSi Chuan Cheng Du 610072 PetroChina Southwest Oil and Gas Field Company Si Chuan Cheng Du 610056 Petroleum Engineering Technology Research Institute of Sinopec North China Oil and Gas Company Zheng Zhou 450007

To fully exploit the technical advantages of the large-depth and high-precision artificial source electromagnetic method in the complex structure area of southern Sichuan and compensate for the shortcomings of the conventional electromagnetic method in exploration depth,precision,and accuracy,the large-depth and high-precision wide field electromagnetic method is applied to the complex structure test area of the Luochang syncline and Yuhe nose anticline in the southern *** advantages of the wide field electromagnetic method in detecting deep,low-resistivity thin layers are ***,on the basis of the analysis of physical property data,a geological–geoelectric model is established in the test area,and the wide field electromagnetic method is numerically simulated to analyze and evaluate the response characteristics of deep thin shale gas layers on wide field electromagnetic ***,a wide field electromagnetic test is conducted in the complex structure area of southern *** data processing and inversion imaging,apparent resistivity logging data are used for calibration to develop an apparent resistivity interpretation model suitable for the test *** the basis of the results,the characteristics of the electrical structure change in the shallow longitudinal formation of 6 km are implemented,and the transverse electrical distribution characteristics of the deep shale gas layer are *** the prediction area near the well,the subsequent data verification shows that the apparent resistivity obtained using the inversion of the wide field electromagnetic method is consistent with the trend of apparent resistivity revealed by logging,which proves that this method can effectively identify the weak response characteristics of deep shale gas formations in complex structural *** experiment,it is shown shows that the wide field electromagnetic method with a large depth and high precision can effectively characterize the electric

关键词： complex tectonic area in southern Sichuan wide field electromagnetic method deep exploration shale gas reservoir electrical structure

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高速数控加工中心虚拟现实教学系统的开发

高速数控加工中心虚拟现实教学系统的开发

作者：朱文杰陕西科技大学

学位级别：硕士

随着计算机技术的飞速发展,传统的实验室教学已经不能够满足时代的需求。所以虚拟实验室教学法应运而生,而本课题研究的“高速数控加工中心虚拟现实教学系统”正是一种崭新的教学法。“高速数控加工中心虚拟现实教学系统”是以数控加工... 详细信息

随着计算机技术的飞速发展,传统的实验室教学已经不能够满足时代的需求。所以虚拟实验室教学法应运而生,而本课题研究的“高速数控加工中心虚拟现实教学系统”正是一种崭新的教学法。“高速数控加工中心虚拟现实教学系统”是以数控加工中心机床为实例,通过虚拟现实技术建立有交互性能的三维可视化教学系统。高速立式加工中心已被列入国家“高档数控机床与基础制造装备”科技重大专项。把虚拟现实技术运用于高速数控加工中心,将为机床教学提供一个逼真、动态、可视化的教学环境,推动机床教学的重大变革。教学系统是面向高校机械专业研发的。系统可用于教学、实验、科学研究,具有较高的实用价值。课题围绕教学系统的研发,完成了机床的三维建模、动画制作、虚拟建模、虚拟拆装、数据手套调试、三维立体显示等研究工作,具体内容如下:(1)三维建模:运用Auto CAD和Solidworks软件,完成了机床的总体方案设计。确定了机床的主要部件十字滑台、立柱、主轴箱、刀库等部件的结构。并用Solidworks软件建立了机床的三维模型。(2)动画制作:分析了机床各部件的结构与工作原理,编写了部件的拆装流程图和工作原理图。运用deep exploration软件完成部件的展示动画,自动拆装动画,工作原理动画等。(3)虚拟建模:将机床三维模型导入到Creator软件中。在Creator界面中,对零件进行节点编制,并赋予各零件以统一规范的编程代号。(4)虚拟场景:在Vega Prime中构建虚拟场景。把虚拟模型导入到场景中。设置虚拟场景中的光源,视点,碰撞检测等参数。(5)虚拟拆装:分析机床部件的拆装过程,编写虚拟拆装顺序表。用VC++编程完成部件的虚拟拆装程序。(6)系统软件:运用PS技术和VC++编程,构建虚拟现实教学系统的总程序和主界面,并把动画模块和虚拟拆装子程序导入到总程序中,完成教学系统的软件部分。(7)硬件配置:为系统配置立体显示、输入、音效等硬件设备,强化了系统的性能。实现了鼠标交互,三维鼠标交互,数据手套交互三种交互功能。开发了显示屏显示,投影屏显示,头盔显示三种立体显示方式。

关键词：高速数控加工中心虚拟现实结构设计 deep exploration Vega Prime

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自动换刀装置虚拟教学子系统的研究与开发

自动换刀装置虚拟教学子系统的研究与开发

作者：夏晨露陕西科技大学

学位级别：硕士

本课题是“高速数控加工中心虚拟现实教学系统”的子系统,基于Solid Works、deep exploration、Creator、VC++和Vega Prime的软件开发环境,建立了自动换刀装置的三维仿真模型和虚拟场景,制作了自动拆装的演示动画,实现了手动虚拟装配和... 详细信息

本课题是“高速数控加工中心虚拟现实教学系统”的子系统,基于Solid Works、deep exploration、Creator、VC++和Vega Prime的软件开发环境,建立了自动换刀装置的三维仿真模型和虚拟场景,制作了自动拆装的演示动画,实现了手动虚拟装配和运动仿真的沉浸效果,满足了自动换刀装置虚拟教学系统的功能要求。本课题主要承担的工作以及所取得研究成果如下:(1)分析和研究了自动换刀装置的工作原理,根据运动需求对自动换刀装置进行结构设计,运用Solid Works建模软件建立三维模型,并按运动关系进行虚拟装配;(2)通过deep exploration格式转换软件,将自动换刀装置Solid Works模型进行转换得到了Creator能打开的文件格式,再对三维模型进行编辑、修改和控制,实现自动换刀装置三维虚拟模型的建立;(3)分析自动换刀装置的装配关系,编写装配流程图,采用deep exploration软件,按照装配流程图制作自动换刀装置的自动拆装演示动画;(4)采用VC++编译软件,控制自动换刀装置各个零部件在虚拟空间的运动,结合碰撞检测技术和数据手套技术,实现自动换刀装置的手动虚拟装配及运动仿真;(5)基于Vega Prime视景仿真软件,采用VC++作为开发工具,构建了教学系统的三维虚拟场景,具有较好的沉浸感和真实感,取得了良好的立体效果。(6)分析并研究了三维立体显示的原理,完成了立体显示功能,并成功接入空间定位器、数据手套与立体眼镜等虚拟现实外设,使使用者真正置身于虚拟自动换刀装置教学系统的三维场景中,实现了虚拟现实的沉浸效果。本课题基于虚拟现实技术,完成了“自动换刀装置虚拟教学子系统的研究与开发”,该系统具有逼真的三维场景,实现了虚拟现实的沉浸效果,支持数据手套和键盘鼠标响应等多种交互方式,能够使用VC++进一步开发教学研究仿真功能,提高了系统的教学适用性。本课题的创新之处在于:首先,将Solid Works与Creator相结合,实现了机械产品在虚拟环境中的快速、精确建模;其次,根据虚拟系统的不同需求,研发了两种机械模型虚拟现实表达方法:(1)采用deep exploration软件能够快速实现机械模型的拆卸,适用于教学过程模型拆卸的动画演示;(2)探索了采用VP和VC++实现虚拟装配和运动仿真的方法,为系统的二次开发留下接口。

关键词：换刀装置虚拟装配 deep exploration 碰撞检测数据手套立体显示

在深度探究中涵育核心素养的数学习题课实践研究

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