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基于几何特征约束的煤矸DE-XRT精准识别方法

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煤炭科学技术 2024年第5期52卷 262-275页

作者：何磊郭永存支亚王爽李德永胡坤程刚安徽理工大学机电工程学院安徽淮南232001 深部煤矿采动响应与灾害防控国家重点实验室安徽淮南232001 安徽中科光电色选机械有限公司安徽合肥230000

双能X射线透射识别煤矸仍存在厚度、硬化、余辉和扇形效应等缺陷,面向5~150 mm宽厚度煤矸分选参数波动大、识别率低。为此,提出一种基于几何特征约束的煤矸双能X射线透射多维度识别方法。该方法通过目标图像最小外接圆直径和区域面积两... 详细信息

双能X射线透射识别煤矸仍存在厚度、硬化、余辉和扇形效应等缺陷,面向5~150 mm宽厚度煤矸分选参数波动大、识别率低。为此,提出一种基于几何特征约束的煤矸双能X射线透射多维度识别方法。该方法通过目标图像最小外接圆直径和区域面积两个几何特征区分煤矸厚度,约束X射线透射响应特征的空间分布,进而从多个维度特征削弱缺陷影响。以少量低密度煤和高密度矸石,获取X射线透射响应特征、位置特征和几何特征,结合Relief-F特征选择建立强特征组合。检验多种分类器的识别性能,选取中等高斯SVM作为多维度方法的分类模型。以强特征组合作为输入,自动创建最终决策模型并分类未知煤矸像素点,通过像素变换图像处理方法获取分选参数p值。结果显示,p值与煤矸密度呈强线性相关,利用密度可选取p值调控分选。而p值与煤矸厚度呈现弱线性相关,宽厚度范围内p值离散程度小、可分性好,赋予分选参数较大调整空间。批量试验验证结果显示,多维度法预排矸分选参数p值为33.01%,以此分选参数对不同密度、不同煤种煤矸识别,整体识别率达99.57%。对5~150 mm厚度范围原煤预排矸整体识别率达99.37%。相比较H-L法、RL法,多维度法识别率更高,面向不同厚度煤矸计算得到的p值精度高、一致性更好。印证了几何特征约束下多维度识别方法的有效性及分选参数调控优势,为现有双能X射线煤矸分选装置识别算法提供了设计参考。

关键词：煤矸识别双能X射线几何特征多维度分选参数

松辽盆地徐家围子断陷沙河子组沉积相类型及演化模式

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沉积学报 2024年第4期42卷 1460-1478页

作者：赵春娟徐淑娟程宏岗代春萌李德勇中国海洋大学海洋地球科学学院海底科学与探测技术教育部重点实验室山东青岛266100 中国石油勘探开发研究院北京100083 青岛海洋科学与技术试点国家实验室海洋矿产资源评价与探测技术功能实验室山东青岛266237

【目的】徐家围子断陷沙河子组致密砂砾岩储层具有非常大的天然气勘探潜力,有望成为大庆油田深层火山岩气藏勘探的重点接替领域。【方法】综合运用岩心、录井、测井及地震等资料,对徐家围子断陷沙河子组沉积相展布及沉积演化模式开展了... 详细信息

【目的】徐家围子断陷沙河子组致密砂砾岩储层具有非常大的天然气勘探潜力,有望成为大庆油田深层火山岩气藏勘探的重点接替领域。【方法】综合运用岩心、录井、测井及地震等资料,对徐家围子断陷沙河子组沉积相展布及沉积演化模式开展了研究。【结果与结论】徐家围子断陷沙河子组发育辫状河三角洲、扇三角洲、具供给水道的远岸浊积扇、近岸水下扇、扇三角洲前端滑塌浊积扇以及浅湖—半深湖、深湖相等沉积相。安达凹陷、徐东凹陷以及肇州凹陷东侧的缓坡带接受来自肇东—朝阳沟基底古隆起的碎屑物质而发育辫状河三角洲沉积,局部发育由远源供给水道形成的湖底浊积扇沉积体;安达凹陷、徐东凹陷、徐西凹陷以及肇州凹陷西侧等徐西陡坡带接受来自中央隆起带粗碎屑物而发育扇三角洲沉积体系,以近源短流为基本特征,局部发育近岸水下扇沉积,且由于湖盆边缘发育的扇三角洲沉积体不稳定,在扇三角洲沉积体前方形成滑塌浊积扇沉积。

关键词：沉积相沉积演化模式测井相地震相徐家围子断陷沙河子组

Belief reliability modeling and analysis for planetary reducer considering multi-source uncertainties and wear

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Journal of Systems Engineering and Electronics 2021年第5期32卷 1246-1262页

作者： li Yun JIANG Kaige ZENG Ting CHEN Wenbin li Xiaoyang li deyong ZHANG Zhiqiang Beijing Spacecraft Manufacturing Co. LtdChina Academy of Space TechnologyBeijing 100094China School of Reliability and Systems Engineering Beihang UniversityBeijing 100191China Science and Technology on Reliability and Environmental Engineering Laboratory Beijing 100191China

The planetary reducer is a common type of transmission mechanism,which can provide high transmission accuracy and has been widely used,and it is usually required with high reliability of transmission characteristics in *** the manufacturing and usage stages of planetary reducers,uncertainties are ubiquitous and wear is inevitable,which affect the transmission characteristics and the reliability of planetary *** this paper,belief reliability modeling and analysis considering multi-uncertainties and wear are proposed for planetary ***,based on the functional principle and the influence of wear,the performance margin degradation model is established using the hysteresis error as the key performance parameter,where the degradation is mainly caused by the accumulated *** that,multi-source uncertainties are analyzed and quantified separately,including manufacturing errors,uncertainties in operational and environmental conditions,and uncertainties in performance ***,the belief reliability model is established based on the performance margin degradation model.A case study of a planetary reducer is applied and the reliability sensitivity analysis is implemented to show the practicability of the proposed *** results show that the proposed method can provide some suggestions to the design and manufacturing phases of the planetary reducer.

关键词： belief reliability planetary reducer performance margin wear multi-source uncertainty

Experiments on ring wave packet generated by water drop

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Chinese Science Bulletin 2008年第11期53卷 1634-1638页

作者： ZHU GuoZhen li ZhaoHui FU deyong Department of Physics Tsinghua University Beijing 100084 China

The propagation of ring wave packet (composed of carrier waves modulated by an envelope) generated by a water drop was studied experimentally. It is a localized wave packet propagating with constant velocity and low diffusion. The wavelength, the amplitude and the waveform of the carrier waves, the velocity of the carrier waves and the packet have been measured. The measured wavelength λe of the carrier waves and the measured group velocity Cge of the packet are near the minimum point of the dispersion curve of group velocity, which may be the main reason why the packet can propagate with low diffusion.

关键词：水滴环状波包实验研究水表面波

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空间机械臂在轨运动可靠性预测与评估

航天器环境工程 2024年第4期41卷 503-508页

作者：郭晓燕孙启臣李云王凯李德勇张子岚高鹏北京卫星制造厂有限公司北京100094

针对空间机械臂在空间高低温环境影响下的末端运动精度可靠性问题,分析了空间机械臂运动可靠性的影响因素;并以机械臂末端位置精度作为评价指标,通过建立考虑臂杆变形误差、关节制造误差及机械臂装配误差等不确定性因素的多变耦合公差... 详细信息

针对空间机械臂在空间高低温环境影响下的末端运动精度可靠性问题,分析了空间机械臂运动可靠性的影响因素;并以机械臂末端位置精度作为评价指标,通过建立考虑臂杆变形误差、关节制造误差及机械臂装配误差等不确定性因素的多变耦合公差的运动学模型,分析机械臂末端轨迹点以及连续轨迹的可靠性,最终得到基于空间温度变化的机械臂末端姿态可靠性模型。应用该模型研究了典型工况下空间机械臂运动轨迹4个末端点的位置精度和姿态精度可靠性,得出其位姿失效概率。该研究可为空间机械臂在轨可靠运行提供理论支持。

关键词：空间机械臂可靠性评估运动精度运动学模型

同方期刊数据库博看期刊评论

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铁路营业线施工安全管理优化措施

综合运输 2024年第5期46卷 130-134页

作者：吕峰王高磊李德永中国国家铁路集团有限公司安全监督管理局北京100844 中国国家铁路集团有限公司铁路安全研究中心北京100081 中国铁道科学研究院集团有限公司铁道科学技术研究发展中心北京100081 中国铁路上海局集团有限公司徐州站江苏徐州221000

铁路营业线施工是铁路运输组织的重要组成部分。通过对新修订的铁路营业线施工管理办法执行情况进行分析,得到新管理办法在执行过程中存在的铁路局实施细则制定不合理、专业管理不到位等问题,主要包括实施细则细化、施工方案管理、Ⅲ级... 详细信息

铁路营业线施工是铁路运输组织的重要组成部分。通过对新修订的铁路营业线施工管理办法执行情况进行分析,得到新管理办法在执行过程中存在的铁路局实施细则制定不合理、专业管理不到位等问题,主要包括实施细则细化、施工方案管理、Ⅲ级施工组织管理、维修作业组织管理、邻近营业线施工管理及培训教育等方面。针对分析发现的问题,提出进一步完善规章制度、加强源头性风险管控、强化现场施工组织管理、加大现场监督检查指导力度、提升施工管理水平等方面建议和具体对策措施。研究建议可以为优化铁路营业线施工安全管理提供参考。

关键词：铁路营业线施工安全管理优化措施

Geochemistry of the Paleocene Clastic Rocks in lishui Sag, East China Sea Shelf Basin： Implications for Tectonic Background and Provenance

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Acta Geologica Sinica(English Edition) 2016年第1期90卷 166-181页

作者： li deyong JIANG Xiaodian XU Fa liU Jinshui HOU Guowei College of Marine Geosciences Ocean University of ChinaQingdao 266100ShandongChina Key Lab of Submarine Geosciences and Prospecting Techniques Ministry of EducationQingdao 266100ShandongChina Shanghai Branch China National Offshore Oil Co.Ltd.Shanghai 200030China

The lishui Sag, in the East China Sea Shelf Basin, is rich in hydrocarbons, with the major hydrocarbon-bearing layers being the Paleocene Mingyuefeng clastic rocks. Analysis of the implicit geologic background information of these Paleocene clastic rocks using petrological and geochemical methods has significant practical importance. These Paleocene sandstones are mainly lithic arenite, lithic arkose and greywacke, composed of K-feldspar, plagioclase, authigenic clays, silica and carbonates. As continental deposits, Yueguifeng clastic rocks have high aluminosilicate and mafic detritus contents, while the lingfeng and Mingyuefeng Formations are rich in silica due to an oscillating coastal marine depositional environment. The major element contents of these Paleocene sandstones are low and have a concentrated distribution, indicating that the geochemical composition is non-epigenetic, transformed by sedimentary processes and diagenesis. The Yueguifeng detritus comprises recycled sediments, controlled by moderate weathering and erosion, while the lingfeng and Mingyuefeng detritus is interpreted as primarily first-cycle materials due to low chemical weathering. In the Late Cretaceous to Early Paleocene, the Pacific Plate began subducting under the Eurasian Plate, causing an orogeny by plate collision and magma eruption due to the melting of subducted oceanic crust. This resulted in the dual tectonic settings of ＂active margin＂ and ＂continental island arc＂ in the East China Sea Shelf Basin. During the Late Paleocene, the Pacific Plate margin migrated eastward along with development of the Philippine Ocean Plate, and the tectonic setting of the lishui Sag gradually turned into a passive continental margin. Detrital sources included both orogenic continental blocks and continental island arcs, and the parent rocks are primarily felsic volcanic rocks and granites.

关键词： geochemistry Paleocene tectonic background provenance lishui sag

Stratigraphic Sequence and Sedimentary Systems in the Middle-Southern Continental Slope of the East China Sea from Seismic Reflection Data: Exploration Prospects of Gas Hydrate

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Journal of Ocean University of China 2019年第6期18卷 1302-1316页

作者： li deyong CHEN Hongyan XU Shujuan XING Junhui CHENG Honggang WANG Jinkai Key Laboratory of Submarine Geosciences and Prospecting Techniques MOECollege of Marine GeosciencesOcean University of ChinaQingdao 266100China Shandong Provincial Key Laboratory of Depositional Mineralization&Sedimentary Minerals Shandong University of Science and TechnologyQingdao 266590China Evaluation and Detection Technology Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdao 266100China Research Institute of Petroleum Exploration&Development Langfang 065007China College of Earth Science and Engineering Shandong University of Science and TechnologyQingdao 266590China

Many evidences for gas hydrate bearing sediments had been found in the continental slope of the East China Sea,such as bottom simulating reflections(BSRs),undersea gas springs,pyrite associated with methane leakage,mud diapirs/mud volcanos,bottom-water methane anomalies and so *** this study,six key stratigraphic interfaces including T_0(seafloor),T_1(LGM,23 kyr B.P.),T_2(2.58 Myr),T_3(5.33 Myr),T_4(11.02 Myr)and T_5(16.12 Myr)were identified,and then five third-order sequences of SQIII1 to SQIII5 were ***,T5 in southern continental slope is not found,which shows that the middle-northern Okinawa Trough had begun to rift in the early Miocene,earlier than the southern *** system tracts including lowstand systems tract(LST),transgressive systems tract(TST),highstand systems tract(HST)and falling stage systems tract(FSST)are further *** marine erosion interface of 11.02 Myr and regressive unconformity interface of 23 kyr *** two large-scale sea level drop events in the research *** typical seismic facies identified in the continental slope are continental shelf-edge deltas,littoral fluvial-delta plains,incised channels or submarine canyons,slope fans,submarine fans or coastal sandbars,littoral-neritic finegrained sediments,mud volcanos and some other geological bodies *** minimum water depth for hydrate occurrence in the Okinawa Trough is 630 m,and the thickness of gas hydrate stability zone in continental slope is between 0 and 590 *** calculated bottom boundary of hydrate stability zone is slightly deeper than BSRs on the seismic *** re-depositional turbidite sand bodies,such as canyon channels,slope fans and submarine fans developed in Quaternary strata,are the predominant hydrate *** to developing process,the dynamic accumulation of hydrate systems can be divided into three evolutionary stages including canyon erosion and hydrate stability zone migration stage,sediments destabili

关键词： sequence stratigraphic architecture systems tract seismic facies depositional system submarine canyon gas hydrate stability zone hydrate dynamic accumulation continental slope of the East China Sea

Active Depths of Main Faults in the Ying-Qiong Basin Investigated by Multi-Scale Wavelet Decomposition of Bouguer Gravity Anomalies and Power Spectral Methods

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Journal of Ocean University of China 2022年第5期21卷 1174-1188页

作者： AN Long YU Chong GONG Wei li deyong XING Junhui XU Chong ZHANG Hao Key Laboratory of Submarine Geosciences and Prospecting Techniques Ministry of Educationand College of Marine GeosciencesOcean University of ChinaQingdao 266100China Laboratory for Marine Mineral Resources Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Shandong Zhengyuan Digital City Construction Co. Ltd.Yantai 264670China

The Ying-Qiong Basin is located on the northwestern margin of the South China Sea and at the junction of the South China Block and the Indochina *** is characterized by complex geological *** existing seismic data in the study area is sparse due to the lack of earthquake *** of the limited source energy and poor coverage of seismic data,the knowledge of deep structures in the area,including the spatial distribution of deep faults,is ***,satellite gravity data cover the entire study area and can reveal the spatial distribution of *** on the wavelet multi-scale decomposition method,the Bouguer gravity field in the Ying-Qiong Basin was decomposed and reconstructed to obtain the detailed images of the first-to sixth-order gravitational *** incorporating the known geological features,the gravitational field responses of the main faults in the Ying-Qiong Basin were identified in the detailed fields,and the power spectrum analysis yielded the depths of 1.4,8,15,26.5,and 39 km for the average burial depths of the bottom surfaces from the first-to fifth-order detailed fields,*** four main faults in the Yinggehai Basin all have a large active depth range:fault A(No.1)is between 5 and 39 km,fault B is between 26.5 and 39 km,and faults C and D are between 15 and 39 ***,the depth of active faults in the Qiongdongnan Basin is relatively shallow,mainly between 8 and 26.5 km.

关键词： Yinggehai Basin Qiongdongnan Basin active depth of fault Bouguer gravity anomaly wavelet multi-scale analysis power spectrum