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多目标击水声信号特征关联方法

兵工学报 2024年第6期45卷 1921-1932页

作者：李研赫邹男张丽敏刘冰修贤吴宗铮傅可一哈尔滨工程大学水声技术全国重点实验室黑龙江哈尔滨150001 哈尔滨工程大学海洋信息获取与安全工业和信息化部重点实验室黑龙江哈尔滨150001 哈尔滨工程大学水声工程学院黑龙江哈尔滨150001 中国船舶集团有限公司系统工程研究院北京100094

目标入水产生的击水声信号形式复杂,在海洋尖刺干扰的影响下易造成漏报和虚警,当多目标不等间隔陆续入水,不同观测节点间同一目标的击水声信号难以正确关联。针对上述问题,提出一种多目标击水声信号关联方法。通过经验模态分解将检测到... 详细信息

目标入水产生的击水声信号形式复杂,在海洋尖刺干扰的影响下易造成漏报和虚警,当多目标不等间隔陆续入水,不同观测节点间同一目标的击水声信号难以正确关联。针对上述问题,提出一种多目标击水声信号关联方法。通过经验模态分解将检测到的瞬态信号分解为固有模态函数(Intrinsic Mode Function,IMF),并提取各阶IMF的频谱等特征,利用灰色关联分析,模糊C均值聚类两种算法实现多击水声信号的关联,为后续的分布式定位提供必要条件。仿真结果表明:当特征参数个数为6时,两种方法的目标关联正确率分别可达98%和87%;当测量节点个数为7时,两种方法的目标关联正确率分别可达95%和87%。仿真结果证明了本文方法的可行性和有效性。

关键词：击水声信号多目标关联瞬态信号特征关联

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Evolutionary game-based optimization of green certificate-carbon emission right-electricity joint market for thermal-wind-photovoltaic power system

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Global Energy Interconnection 2023年第1期6卷 92-102页

作者： Ran Wang yanhe li Bingtuan Gao School of Electrical Engineering Southeast UniversityNo.2 SipailouNanjing 210096P.R.China State Grid Qinghai Electric Power Company No.89 Shengli StreetXining 810001P.R.China

With the increasing proportion of renewable energy in the power market,the demands on government financial subsidies are gradually ***,a joint green certificate-carbon emission right-electricity multi-market trading process is proposed to study the market-based strategy for renewable *** the commodity characteristics of green certificates and carbon emission rights,the dynamic cost models of green certificates and carbon rights are constructed based on the Rubinstein game and ladder pricing ***,considering the irrational bidding behavior of energy suppliers in the actual electricity market,an evolutionary game based multi-market bidding optimization model is ***,it is solved using a composite differential evolutionary ***,the case study results reveal that the proposed model can increase profits and the consumption rate of renewable energy and reduce carbon emission.

关键词： Electricity market Carbon emission right Green certificate Evolutionary game

超远距离下组煤层超前开采覆岩应力及裂隙演化规律研究

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辽宁工程技术大学学报（自然科学版） 2024年第2期43卷 143-149页

作者：李延河郭明功张肖洋孙维吉房胜杰中国平煤神马集团河南平顶山467000 平顶山天安煤业股份有限公司八矿河南平顶山467000 辽宁工程技术大学力学与工程学院辽宁阜新123000 辽宁工程技术大学矿业学院辽宁阜新123000

为探究平煤股份八矿超远距离下组煤层超前开采对上覆煤岩层的影响,采用相似材料模拟实验分析超远距离下组煤层超前开采上覆煤岩层裂隙及应力演化规律,并进行现场验证。研究结果表明:超远距离下组煤层超前开采条件下,随工作面推进,上覆... 详细信息

为探究平煤股份八矿超远距离下组煤层超前开采对上覆煤岩层的影响,采用相似材料模拟实验分析超远距离下组煤层超前开采上覆煤岩层裂隙及应力演化规律,并进行现场验证。研究结果表明:超远距离下组煤层超前开采条件下,随工作面推进,上覆煤岩层裂隙率呈先上升后平稳的趋势,当工作面从187 m推进至272 m,裂隙发育最快;超远距离下组煤层超前开采对上覆煤岩层有卸压效果,但与常规情况下相比卸压滞后距离较大;上覆岩层卸压比戊组煤层大;通过现场验证发现,随工作面推进,矿压呈先上升再下降后稳定的趋势,并将工作面区域分为未干扰区、应力集中区、卸压区和稳定区。研究结论可为平煤矿区远距离下组煤层超前开采、上组煤层工作面瓦斯防治和采区工作面采掘部署提供参考。

关键词：超远距离相似材料模拟应力演化卸压效果

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深部极近距离煤层群开采底抽巷层位布置研究

煤矿安全 2024年第3期55卷 155-165页

作者：郭明功李延河宋大钊杨港邱黎明杨乘平顶山天安煤业股份有限公司河南平顶山467100 北京科技大学土木与资源工程学院北京100083 炼焦煤资源绿色开发全国重点实验室河南平顶山467002 贵州盘江煤电集团技术研究院有限公司贵州贵阳550000

以平煤八矿深部极近距离煤层群为工程背景,对深部极近距离煤层群开采条件下底抽巷的合理布置层位展开了研究;采用FLAC^(3D)数值模型,模拟了底抽巷顶板与己_(16-17)煤层不同净岩距离下煤层的塑性区、应力场和位移场演化规律。结果表明:... 详细信息

以平煤八矿深部极近距离煤层群为工程背景,对深部极近距离煤层群开采条件下底抽巷的合理布置层位展开了研究;采用FLAC^(3D)数值模型,模拟了底抽巷顶板与己_(16-17)煤层不同净岩距离下煤层的塑性区、应力场和位移场演化规律。结果表明:当净岩距离为3、5 m时底抽巷上方煤层受到采动影响可以分为卸压区、应力集中区和原岩应力区;净岩距离为8~15 m时,上方煤层受到采动影响可以分为卸压区和原岩应力区;底抽巷的最优布置层位为保留净岩距离8~10 m;底抽巷掘进后,位于其正上方的位置卸压效果最好,该区域煤体充分变形,瓦斯治理较为容易,有利于后期煤巷的支护与维护,是布置煤巷的最佳位置;现场监测有效验证了底抽巷在该净岩距离下治理深部极近距离煤层群工作面瓦斯突出危险性的可靠性。

关键词：深部开采煤层煤与瓦斯突出瓦斯抽采底抽巷层位瓦斯灾害治理

Measurements of Sulfur Isotope Composition on Ultrasmall(80 Nanomole) Sulfide and Sulfate Samples by a Modified EA-IRMS

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Acta Geologica Sinica(English Edition) 2022年第5期96卷 1792-1799页

作者： WU Xiaopei FAN Changfu HU Bin GAO Jianfei li yanhe MNR Key Laboratory of Metallogeny and Resource Assessment Institute of Mineral ResourcesCAGSBeijing 100037China School of Earth and Space Sciences Peking UniversityBeijing 100871China

The traditional method for sulfur isotope measurement using EA-IRMS commonly requires sulfur content greater than 2 μmol. Such a large sample size limits its application to low-S materials, the size mainly being due to ineffective utilization of sample gas, almost 99.7% of which is discarded with carrier gas through the split port of the continuous-flow interface. A modified EA-IRMS system with a gas chromatographic(GC) column and a custom-built cryogenic concentration device is used in this study. We measured six reference materials to test the performance of this method. The results were consistent with those obtained through traditional EA-IRMS. Precisions ranging from ±0.24‰ to ±0.76‰(1σ)can be obtained with samples equivalent to ~80 nmol sulfur, which were similar to results obtained from an alternative method using an absorption column. Our improved method is a powerful tool for sulfur isotope measurement in ultrasmall sulfide and sulfate samples, which can be further applied to carbon, nitrogen and oxygen isotope analyses of samples at about 100 nmol level.

关键词： sulfur isotopes ultrasmall sample cryogenic concentration EA-IRMS

Helium Isotope Geochemistry of Ultrahigh-Pressure Metamorphic Eclogites From the Dabie-Sulu Terrane in East China

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Acta Geologica Sinica(English Edition) 2000年第1期74卷 14-18页

作者： li yanhe li Jincheng SONG Hebin liU Xiaochun Institute of Mineral Deposits Chinese Academy of Geological Sciences Institute of Geomechanics Chinese Academy of Geological Sciences *Correspondence: li yanhe *Correspondence: lyh@***[?]4Li Yanhe Born in 1962 graduated from the Changchun College of Geology in 1984 got a master's degree from the Chinese Academy of Geological Sciences (CAGS) in 1989. Now a research fellow at the Institute of Mineral Deposits CAGS his current scientific interests lie in isotope geochemistry of noble gases.

: The 3He/4He ratios of most eclogites from the Dabie-Sulu terrane range from 0.056 to 0.67 Ra; the data points fall into the mixing part of the crust and the mantle in the 3He-4He diagram. The 3He/4He ratios of eclogites are obviously correlated with the types of their surrounding rocks. The helium isotope composition of the eclogites from the Bixiling complex possesses characters of mantle-derived rocks with the 3He/4He ratio being 5.6 Ra. The 4He concentration of the eclogites exhibits visible inverse correlation with the δ18O value of the quartz in the eclogites from the Sulu area. The δ18O values of the eclogites change synchronously with those of the country rocks. Those results suggest that protoliths of the eclogites were basic-ultrabasic rock bodies or veins intruding into the continental crust in the early stage; strong exchange and hybridization between the basic-ultrabasic rocks and continental rocks and the atmospheric water during the intrusion led to abrupt increase of the 3He/4He ratios, δ18O values and Nd(0) values of the intrusive bodies or veins, which show characters of continental rocks. This indicates that the eclogites are autochthonous.

关键词： eclogites helium isotope Dabie-Sulu terrane

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城市太阳能辐射空间分布研究

测绘与空间地理信息 2024年第5期47卷 136-138页

作者：吴凯刘昊阳李延贺济南市勘察测绘研究院山东济南250013 山东建勘集团有限公司山东济南250031

如何高效利用太阳能,进行太阳能辐射空间分布研究,是一个亟待解决的问题。本文基于GIS空间分析功能,提出了一种半自动生成的方法,研究城市太阳能辐射空间分布。本研究使用了liDAR数据,利用它的优势,建立了山东建筑大学的建筑物太阳能辐... 详细信息

如何高效利用太阳能,进行太阳能辐射空间分布研究,是一个亟待解决的问题。本文基于GIS空间分析功能,提出了一种半自动生成的方法,研究城市太阳能辐射空间分布。本研究使用了liDAR数据,利用它的优势,建立了山东建筑大学的建筑物太阳能辐射空间分布研究方法模型,为城市太阳能的利用探索了一条可靠的途径。

关键词：太阳能空间分析天气高程激光雷达

Archean Mass-independent Fractionation of Sulfur Isotope:New Evidence of Bedded Sulfide Deposits in the Yanlingguan-Shihezhuang area of Xintai,Shandong Province

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Acta Geologica Sinica(English Edition) 2008年第2期82卷 444-450页

作者： li yanhe HOU Kejun WAN Defang YUE Guoliang Key Laboratory of Metailogeny and Mineral Resource AssessmentInstitute of Mineral Resource Chinese Academy of Geological Sciences Beijing 100037 Key Laboratory of Isotope Geology CAGS Beijing 100037

Multiple sulfur isotope ratios （^34S/^33S/^32S） of Archean bedded sulfides deposits were measured in the Yanlingguan Formation of the Taishan Group in Xintai, Shandong Province, East of China; 633S = -0.7%o to 3.8‰,δ^34S = 0.1‰-8.8‰, △^33S = -2.3‰ to -0.7‰. The sulfur isotope compositions show obvious mass-independent fractionation （MIF） signatures. The presence of MIF of sulfur isotope in Archean sulfides indicates that the sulfur was from products of photochemical reactions of volcanic SO2 induced by solar UV radiation, implying that the ozone shield was not formed in atmosphere at that time, and the oxygen level was less than 10-5 PAL （the present atmosphere level）. The sulfate produced by photolysis of SO2 with negative △^33S precipitated near the volcanic activity center; and the product of element S with positive △^33S precipitated far away from the volcanic activity center. The lower △^33S values of sulfide （-2.30‰ to --0.25‰） show that Shihezhuang was near the volcanic center, and sulfur was mostly from sulfate produced by photolysis. The higher △^33S values （-0.5‰ to -‰） indicate that Yanlingguan was far away from the volcanic center and that some of sulfur were from sulfate, another from element S produced by photolysis. The data points of sulfur isotope from Yanlingguan are in a line parallel to MFL （mass dependent fractionation line） on the plot of δ^34S--δ^33S, showing that the volcanic sulfur species went through the atmospheric cycle into the ocean, and then mass dependent fractionation occurred during deposition of sulfide. The data points of sulfur isotope from Shihezhuang represent a mix of different sulfur source.

关键词： Xintai of Shandong Province Archean sulfides sulfur MIF photochemical reaction

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深部矿井新型局部制冷设备设计及应用

煤炭工程 2024年第8期56卷 99-104页

作者：李延河于振子赵万里陈培生赵航平顶山天安煤业股份有限公司河南平顶山467099 珠海格力电器股份有限公司广东珠海519070

随着我国矿井开采深度日益增加,井下高温热害成为制约煤矿开采的主要因素。作为集中式制冷的补充方式,局部制冷可有效消除井下高温热害。文章针对平煤十矿高温掘进面的高温热害问题,重点研究了由闭式乏风冷却塔、多级串联直膨组合柜、... 详细信息

随着我国矿井开采深度日益增加,井下高温热害成为制约煤矿开采的主要因素。作为集中式制冷的补充方式,局部制冷可有效消除井下高温热害。文章针对平煤十矿高温掘进面的高温热害问题,重点研究了由闭式乏风冷却塔、多级串联直膨组合柜、大压比防爆半封闭螺杆压缩机等装备组成的制冷装备,介绍了该装备的设计方案以及工程实际应用效果。结果表明:闭式乏风冷却塔方案可提升矿井综合能效水平;新型矿井局部制冷系统可适用于高压比矿井工况,运行冷凝温度最高至80℃;直膨组合柜采用多级串联降温冷却,实现掘进面温降10℃,相对湿度下降30%。

关键词：深井高温热害局部制冷乏风冷却降温除湿