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Hydrogeological feasibility of mine water deep geological storage in Baotashan coarse sandstone:A case study in Ordos Basin

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Deep Underground Science and Engineering 2022年第2期1卷 148-164页

作者： Ge Chen yajun sun Zhimin Xu Xin Li School of Resources and Geosciences China University of Mining and TechnologyXuzhouChina

For the sake of mine water drainage and sustainable groundwater protection,the new approach of mine water deep geological storage(MWDGS)is highly necessary to save water resources in the semi-arid region of ***,up to now,little academic research has been done on mine water geological *** this situation,the hydrogeological feasibility of MWDGS was explored in Baotashan coarse sandstone(BCS)of Jurassic measure in Ordos *** results show that the white-gray BCS with a fragile skeleton of quartz(41.4%),feldspar(21.1%),and clay minerals(16.4%)provides the potential variable-void for mine water;and its hydro-chemical type of BCS aquifer is CO_(3)-Na and *** the burial depth increases,the strong alkaline groundwater is in stagnant and poor recharge-runoff-discharge *** lab test shows that the pores whose diameter is over 10μm could be treated as the main storage of mine water;and the effective porosity varies from 1.36%to 3.46%.When mine water is injected,the strong hydrodynamics of mine water storage would change the permeability significantly and about 0.201%soluble solids would be *** clay minerals obstruct the pores and induce the saturated phase of high permeability to evolve into steady phase of lower *** the condition of nonhydraulic fracturing during continuous storage,the heterogeneous anisotropic medium obtained by Transition PRObability GeoStatistics(TPROGS)shows that the capacity of BCS aquifer is 0.455 to 1.226Mm^(3)for 1 km^(2)in the study *** simulation shows that the groundwater mound in well-scale and mine-scale would be *** groundwater quality characteristics of“Three Zone”would occur around and gradually drop to approximate the original brine within 10 *** hydrogeological feasibility reveals that this approach is useful for the well design and groundwater environment management during the mine water deep geological storage project in the Ordos basin.

关键词： Baotashan coarse sandstone deep geological storage hydro-geological evolution mine water water-rock interaction

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Construction of multi-factor identification model for real-time monitoring and early warning of mine water inrush

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International Journal of Mining Science and Technology 2021年第5期31卷 853-866页

作者： Xin Wang Zhimin Xu yajun sun Jieming Zheng Chenghang Zhang Zhongwen Duan School of Resources and Geosciences China University of Mining and TechnologyXuzhou 221116China General Prospecting Institute China National Administration of Coal Geology Beijing 100039China Wanbei Coal Electricity Group Suzhou 234000China

As a new technical means that can detect abnormal signs of water inrush in advance and give an early warning,the automatic monitoring and early warning of water inrush in mines has been widely valued in recent *** to the many factors affecting water inrush and the complicated water inrush mechanism,many factors close to water inrush may have precursory abnormal *** present,the existing monitoring and early warning system mainly uses a few monitoring indicators such as groundwater level,water influx,and temperature,and performs water inrush early warning through the abnormal change of a single ***,there are relatively few multi-factor comprehensive early warning identification *** on the analysis of the abnormal changes of precursor factors in multiple water inrush cases,11 measurable and effective indicators including groundwater flow field,hydrochemical field and temperature field are ***,taking Hengyuan coal mine as an example,6 indicators with long-term monitoring data sequences were selected to establish a single-index hierarchical early-warning recognition model,a multi-factor linear recognition model,and a comprehensive intelligent early-warning recognition *** results show that the correct rate of early warning can reach 95.2%.

关键词： Mine water inrush Automatic monitoring Real-time warning Recognition model

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Paradigm for Determining the Optimal Ultradeep and Superthick Saline Aquifer for High-TDS Mine Water Geological Storage

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Acta Geologica Sinica(English Edition) 2024年第3期98卷 771-785页

作者： LI Xin CHEN Ge XU Zhimin LIU Qi CHEN Tianci sun yajun School of Resources and Geosciences China University of Mining and TechnologyXuzhouJiangsu 221116China National Professional Central Laboratory of Basic Research on Mine Water Disaster Prevention and Control Technology XuzhouJiangsu 221116China

Saline aquifers are the most popular waste and CO_(2)injection and storage reservoirs *** project proposes that several optimal injection positions should be investigated as hydraulic pressure-focused positions,in order to relieve the high demands of pump *** comprehensive indices(F_(i))representing the injectivity of different burial depths were obtained by using information entropy,based on the mercury injection experimental data of 13 rock *** results demonstrated that the burial depths of No.4,No.1 and No.2 in the Liujiagou Formation were the most suitable positions for hydraulic focused injection,which means the upper 30 m thickness could be regarded as the hydraulic focused range in the saline aquifer with an average thickness of 400 *** addition,some laboratory experiments and in situ tests were carried out for the purpose of certifying and analyzing results,including SEM,XRD,brittleness index and *** results suggested that the rock samples at the No.4,No.1 and No.2 burial depth ranges have loose microstructure,weak cementation,as well as dual pores and *** lithology is mainly quartz and feldspar,but the clay mineral content is high(10%-25%),which is positive for *** lithology is suitable for hydraulic fracturing to form extended cracks and micro-fissures during high-TDS(total dissolved solids)mine water injection,because of the high brittleness ***,a theoretical and technical framework for high-TDS mine water injection was established,based on operating pilot *** theoretical defects and drawbacks learned from the field practices were summarized and solutions *** research in this study could provide guidance and a paradigm for the inexpensive treatment of high-TDS mine water by injection and storage.

关键词： ultradeep Liujiagou Formation high-TDS mine water optimal hydraulic injection positions information entropy reservoir spatial characteristics

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Insights into pH-dependent transformation of gibberellic acid in aqueous solution:Transformation pathway,mechanism and toxicity estimation

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Journal of Environmental Sciences 2021年第6期33卷 1-10页

作者： Li Zhang yajun sun Zhimin Xu Wenjing Zhang Guoxin Huang Fei Liu Liang Chen School of Resources and Geosciences China University of Mining and TechnologyXuzhou 221116China Beijing Key Laboratory of Water Resources and Environmental Engineering China University of GeosciencesBeijing 100083China College of Chemistry and Institute of Green CatalysisZhengzhou UniversityZhengzhou 450001China Chinese Academy of Environmental Planning Beijing 100012China State Key Laboratory of Hydraulic Engineering Simulation and Safety School of Civil EngineeringTianjin UniversityTianjin 300072China

Gibberellic acid(GA_(3))is widely used in agriculture and maybe transfer with groundwater flow,which is an endocrine disruptor,but few studies have focused on the transformation pathway and toxicity assessment of GA_(3)and its ***,GA_(3)and its transformation products in aqueous solution were identified and quantified by liquid chromatography mass spectrometry hybrid ion trap time-of-flight(LCMS-IT-TOF)and high-performance liquid chromatography(HPLC),*** results showed that the half-life of GA_(3)transformation in ultrapure water was 16.1–24.6 days at p H=2.0–8.0,with the lowest half-life occurring at p H=8.0 and highest half-life occurring at p H=*** gibberellic acid(Iso-GA_(3))and gibberellenic acid(GEA)were the main transformation products with a little hydroxy gibberellic acid(OH-GA_(3)).In North China groundwater,the mass balance of GA_(3)and its products was 76.2%,including Iso-GA_(3)(58%),GEA(7.9%),GA_(3)(7.3%)and OH-GA_(3)(3%)after reaching transformation *** Gaussian 09 for chemical computation,it was found that the transformation mechanism of GA_(3)was dependent upon the bond energy and the stereochemical feature of its molecular ***_(3)always isomerized from theγ-lactone ring due to the lowest bond energy between the oxygen terminus of theγ-lactone ring and A *** GA_(3)and its transformation products all had developmental toxicity,the predicated LC 50(96 hr)and LD 50 of the main products of GA_(3)were much lower than those of GA_(3),indicating GA_(3)would be transformed into higher toxicity derivatives in water environments,posing a significant health risk to humans and the environment.

关键词： Gibberellic acid(GA_(3)) Transformation products LCMS-IT-TOF Qualitative and quantitative determination Toxicity estimation

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Predicting the height of water-flow fractured zone during coal mining under the Xiaolangdi Reservoir

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Mining Science and Technology 2010年第3期20卷 434-438页

作者： XU Zhimin sun yajun DONG Qinghong ZHANG Guowei LI Shi School of Resource and Geoscience China University of Mining&TechnologyXuzhou 221008China

It is very important to determine the extent of the fractured zone through which water can flow before coal mining under the water *** paper deals with methods to obtain information about overburden rock failure and the development of the fractured zone while coal mining in Xin'an Coal *** risk of water inrush in this mine is great because 40%of the mining area is under the Xiaolangdi *** simulations combined with geophysical methods were used in this paper to obtain the development law of the fractured zone under different mining *** comprehensive geophysical method described in this paper has been demonstrated to accurately predict the height of the water-flow fractured *** from the new model, which created from the results of numerical simulations and field measurements,were successfully used for making decisions in the Xin'an Coal Mine when mining under the Xiaolangdi *** scale experiments at the number 11201,14141 and 14191 working faces were safely carried *** achievements provide a successful background for the evaluation and application of coal mining under large reservoirs.

关键词： coal mining under reservoir water-flow fractured zone development law water inrush of mine predicting model

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为何要信达尔文的演化论——论《物种起源》的二十五重简约美

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生物多样性 2022年第9期30卷 183-191页

作者：孙亚君上海对外经贸大学会展与传播学院上海201620

科学理论的本质较量是解释力之简约美的较量,其使得科学革命成为可能。本文通过整理与剖析达尔文的《物种起源》的论述,展示了生命科学史上最伟大革命的内在理性,即,演化论相对于神创论的25重简约性优势,分别体现在解释:(1)驯化品种的... 详细信息

科学理论的本质较量是解释力之简约美的较量,其使得科学革命成为可能。本文通过整理与剖析达尔文的《物种起源》的论述,展示了生命科学史上最伟大革命的内在理性,即,演化论相对于神创论的25重简约性优势,分别体现在解释:(1)驯化品种的产生、(2)驯化品种在内外性状层面的多样性的差异性、(3)(杂交的子代的)遗传性状的变化、(4)杂种与混血在健康度与生殖力方面的差异、(5)杂种与混血在性状变化上的差异、(6)生物形态分布的簇状格局、(7)生物形态分化在不同分类阶元内部的不均等性、(8)不同性状分化的不均等性、(9)物种间性状差别的渐变性、(10)伴随环境变化的形态变化、(11)相对环境变化的形态惯性、(12)生物间竞争强度分布的不均等性、(13)不同物种间的形态同似性、(14)个体间的形态差异随着个体发育而变大的现象、(15)生物的痕迹构造、(16)生物地理分布的系统差异性(贯穿诸生物分类阶元的稳定偏向的差异性)、(17)物种的“等级性”与其地理分布范围的关系、(18)生物地理分布的“岛屿”现象、(19)岛屿物种的总丰度低而土著物种丰度高的特征、(20)岛屿生物的类别构成特征、(21)岛屿生物与相邻大陆的生物间的相似度关系、(22)物种迁移与物种灭绝的地域差异性、(23)物种灭绝的渐变模式、(24)古生物与现存生物在形态上的关系、(25)胚胎形态与古生物形态间的相似关系。正是这25重简约美,铸造了《物种起源》作为最伟大的科学著作的底色,并奠定了现代生命科学研究的大方向与总方法——“范式”。这一剖析亦有助于我们理解科学发展的真精神以及把握当代科学研究的进展。

关键词：生命科学科学革命形态生物地理学岛屿灭绝古生物学胚胎学

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Analysis of drought resistance HVA1 gene under drought stress in different Poa pratensis cultivars

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Journal of Northeast Agricultural University(English Edition) 2007年第1期14卷 1-4页

作者： WU Yanhua CHEN yajun SHEN Fengjuan sun Xiaoyan College of Horticulture Northeast Agricultural University Harbin 150030 China

Total RNA from leaves of Poapratensis cultivars under drought stress was extracted for reversing transcription to cDNA and then cDNA as template for PCR reaction by designing primer of cds of Hordeum valgare HVA1 drought resistance gene from GenBank. The amplified products were positive recon identified by using procedures of recovery, connection, transformation and enzyme separation. The length of cloned gene sequence was 324 bp, identity reached 79.27% with Barley HVA1 gene that meaned the cloned gene sequence was the partial HVA1 gene of Poapratensis.

关键词： Poa pratensis drought stress HVA1 drought resistance gene

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Mechanical design of a cryogenic Delta-Knot undulator for high energy photon source

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Radiation Detection Technology and Methods 2021年第1期5卷 122-127页

作者： Shuchen sun Huihua Lu Xiaoyu Li Xiangzhen Zhang Yanwei Yang yajun sun Lei Zhang Yuhui Li Zhiqiang Li Wan Chen Lingling Gong Shutao Zhao Qing Guo Keyun Gong Yongsheng Huang Yufeng Yang Laboratory of Particle Acceleration Physics and Technology Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Science Beijing 100049China

Introduction A novel type of pure permanent cryogenic Delta–Knot Undulator was developed at IHEP to supply a high flux of full adjustable polarization synchrotron radiation with low on-axis power *** prototype was an active attempt and early exploration for future APPLE–Knot undulator,which will be used at high energy photon source(HEPS).Materials and methods There are several challenges to develop a cryogenic delta undulator,such as the complicated structure,the influence of large magnetic force,and the magnetic measurement difficulty due to the very small *** this paper,the mechanical design for overcoming these difficulties will be presented in *** A special hall measuring system is developed,and the preliminary results agree with the theoretical *** undulator prototype will provide valuable experience for angle magnetization technology,intricate magnetic attraction structure design,and magnetic field measurement under closed small space.

关键词： Insertion device Undulator Synchrotron radiation photon source Low-emittance storage ring Mechanical design

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动物权利如何应对捕食问题?

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自然辩证法通讯 2023年第3期45卷 30-37页

作者：孙亚君上海对外经贸大学会展与传播学院上海201620

动物权利的道德实践必须回答“捕食问题”,即,是否应该干涉自然界中的捕食甚至灭绝食肉动物。本文剖析了汤姆·里根关于此实践困境的立场(即,不干涉自然)的三种辩护,即:(1)非人动物作为道德受体免于责罚;(2)保护人类免于被食肉动物攻击... 详细信息

动物权利的道德实践必须回答“捕食问题”,即,是否应该干涉自然界中的捕食甚至灭绝食肉动物。本文剖析了汤姆·里根关于此实践困境的立场(即,不干涉自然)的三种辩护,即:(1)非人动物作为道德受体免于责罚;(2)保护人类免于被食肉动物攻击是一种特殊情形;(3)不干涉动物界的弱肉强食是对动物自身能力的敬重。但是,分析表明,这三种辩护都与动物权利自身的伦理学体系的核心相矛盾。进而,本文展示了权利论面对该实践困境的可能的有效辩护:一方面,灭绝食肉动物的实践是以一种“剥夺”的伤害替换“侵害”的伤害,因而不具有应然性;另一方面,“生命价值”的阐明也为保护人类免受食肉动物攻击提供了合理的辩护。

关键词：汤姆·里根伤害生命主体亲护性生命价值

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论“动物权利”之道德实践的优先级

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自然辩证法通讯 2022年第1期44卷 93-102页

作者：孙亚君上海对外经贸大学会展与旅游学院上海201620

作为一种新的伦理学,汤姆·里根的“动物权利”具有巨大的意义,因为,它不仅仅是一场革命性的进路,也是一个系统性体系,即本体、价值与实践之间的有机联系性。但是,在权利论庞大的实践体系中,不同实践主张之间的优先级关系是模糊的。这... 详细信息

作为一种新的伦理学,汤姆·里根的“动物权利”具有巨大的意义,因为,它不仅仅是一场革命性的进路,也是一个系统性体系,即本体、价值与实践之间的有机联系性。但是,在权利论庞大的实践体系中,不同实践主张之间的优先级关系是模糊的。这为权利论的道德实践带来了不确定性。以此,本文通过考察“动物权利”之系统内部的有机联系性,来阐明不同实践主张之间在道德考量层面的优先级关系。这种实践主张间的比较既包括在“消极”意义上的道德义务,也包括在“积极”意义上的实践原则。本文的分析展示了在道德考量性的层面,不伤害义务的优先级高于“协助”或“慈善”的实践,后者的优先级又高于“增加裨益”的实践。是为道德实践优先级的阐明。进而,分析指出,协助或慈善的义务性只能体现在社会层面,而非个体层面。这一点,既是对于动物权利之实践论的一个修正,也应当作为所有伦理学在道德实践方面的一项基本原则。

关键词：环境伦理伤害协助慈善裨益

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