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Geochemistry of sandstones from the Neoproterozoic Jinshanzhai Formation in northern Anhui Province, China: Provenance, weathering and tectonic setting

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Chinese Journal Of Geochemistry 2013年第1期32卷 95-103页

作者： SUN Linhua gui herong CHEN Song School of Earth Science and Engineering Suzhou University

Sandstones from the Neoproterozoic Jinshanzhai Formation in northern Anhui Province, China, were analyzed for major oxides and trace elements to infer their provenance, the intensity of paleo-weathering of their source rocks and the depositional tectonic setting. Diagrams of (SiO2/20)-(Na2O+K2O)-(MgO+TiO2+FeO*), TiO2-Ni, Th-Hf-Co, Hf-La/Th and some ratios of elements indicate that felsic rocks constitute the source rocks in the provenance. The values of Chemical Index of Alteration (CIA) are low, which are considered to be affected by K-metasomatism. Whereas the high CIW (Chemical Index of Weathering) values indicate intensive weathering of the source material. Plots of sandstones on bivariate and triangle discriminant diagrams, as well as ICV (Index of Compositional Variation) values revealed that they were deposited on a passive continental margin or in an intra-plate basin. Our recent study, in combination with previous studies and the research progress of the Rodinia super continent, demonstrated that the convergence and extension of the Rodinia super continent were preserved by twice extension as expressed by petrological variation of the southeastern margin of the North China Craton (NCC) during the Neoproterozoic.

关键词：沉积构造背景中国北方新元古代地球化学特征安徽省 Rodinia超大陆砂岩耐候性

Groundwater pollution and human health risk based on Monte Carlo simulation in a typical mining area in Northern Anhui Province,China

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International Journal of Coal Science & Technology 2021年第5期8卷 1118-1129页

作者： Huili Qiu herong gui Pei Fang Guangping Li Engineering Research Center of Coal Mine Exploration of Anhui Province(Suzhou University Suzhou 234000AnhuiChina School of Information Engineering Suzhou UniversitySuzhou 234000AnhuiChina Qianyingzi Coalmine of Wanbei Coal-Electricity Group Co.Ltd. Suzhou 234000AnhuiChina

The main objective of this study was to evaluate eight kinds of trace element pollutants in groundwater from a typical coal mine area,and carry out a corresponding health risk assessment for the local *** do this,34 shallow groundwater(SG)samples and 18 mid-layer groundwater(MG)samples were collected from the Sulin mining *** minimize the uncertainties in the health risk assessment,this paper relied on Monte Carlo simulations and sensitivity *** results revealed that Sr and Mn contents exceeded their corresponding WHO(guidelines for drinking water quality,4th ***,2011)guidelines and Chinese groundwater standards(GB/T14848-2017),while the other analyzed trace elements remain below those threshold *** calculated hazard quotient and hazard index values for adults from ingestion exposure to SG and MG were well below the threshold limit of *** simulations further show that the total cancer risk value above the limit of 1×10^(-6) is 0%for SG and 29.39%for *** analysis identified the Sr and Cr contents as the most relevant element variables affecting the probabilistic non-carcinogenic and carcinogenic risk values in the model,respectively.

关键词： Health risk assessment Trace elements Monte Carlo simulation Sensitivity analysis Mining area

Rare earth element geochemistry of groundwater from a deep seated sandstone aquifer,northern Anhui province,China

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Mining Science and Technology 2011年第4期21卷 477-482页

作者： gui herong Sun Linhua Chen Luwang Chen Song School of Earth Sciences and Engineering Suzhou Universing Suzhou 234000 China School of Resources and Environmental Engineering Hefei University of Technology Hefei 230009 China

Deep coal mines in northern Anhui province, China, provide opportunities for tracing the distribution and fractionation of rare earth elements CREEs） in deep seated environments. Major ions, as well as REE concentrations were measured in groundwater from a sandstone aquifer located between -400 and -280 m. Our results indicate that this groundwater consists of ***-Na or ***3-Na water types with warm temperature （30.1-31.4~C）, circumneutral pH （7.27-8.61） and high levels of total dissolved solids （TDS ~ 1306--2165 mg/L）. Concentrations of REEs in groundwater are high as expressed by their Nd con- centrations （0.0086-0.018μg/L）. Except for weak heavy REEs （HREE） enrichment relative to light REEs （LREE）, the similarity of REE distribution patterns between groundwater and aquifer rock indicate that enrichment of REEs is considered to be controlled by aquifer rock, as well as by their minerals, whereas the fractionation of REEs is controlled by HREE enriched minerals and, to a lesser extent, by inorganic REE complexes. Ce anomalies normalized to Post Archean Average Shale （PAAS） and aquifer rock are weak, which probably reflect the contribution of reduced conditions in combination with pH, rather than a sig- nature of aouifer rock.

关键词： Rare earth elements Water-rock interaction Sandstone aquifer Groundwater

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基于主量元素地球化学的岩屑层位源解析

煤炭学报 2024年第2期49卷 929-940页

作者：桂和荣李俊陈永青余浩王浩叶爽陈大星梁展胡洋郭艳许继影国家煤矿水害防治工程技术研究中心(宿州学院) 安徽宿州234000 安徽省矿井勘探工程技术研究中心安徽宿州234000 中国科学技术大学地球与空间学院安徽合肥230000 安徽恒源煤电股份有限公司安徽宿州234000

近年来,岩屑录井在“华北型”煤田底板灰岩层注浆加固工程中发挥了重要作用。然而,现有的岩屑录井仅停留在颜色、颗粒大小及形貌特征等物理指标的识别上,难以精准判层,钻孔设计“顺层率”难以保障,制约着底板灰岩水害区域治理效果。基... 详细信息

近年来,岩屑录井在“华北型”煤田底板灰岩层注浆加固工程中发挥了重要作用。然而,现有的岩屑录井仅停留在颜色、颗粒大小及形貌特征等物理指标的识别上,难以精准判层,钻孔设计“顺层率”难以保障,制约着底板灰岩水害区域治理效果。基于石炭纪太原组薄层灰岩及其碎屑岩夹层的元素地球化学差异特点,选取淮北煤田桃园煤矿为研究区,对太原组上段薄层灰岩L_(1)灰~L_(4)灰地层(注浆治理目的层为L_(3)灰)垂直钻孔岩心进行取样,利用X射线荧光光谱仪(XRF)定量测定了薄层灰岩及其夹层的主量元素背景值,通过聚类分析、因子分析等数理统计手段建立薄层灰岩主量元素地球化学识别模式;同时对地面定向钻水平分支孔岩屑同样开展主量元素测试,并基于已建立的地球化学识别模式进行岩屑层位源解析以及识别模式验证。结果显示:高CaO丰度、烧失量(LOI)可以作为注浆加固改造目的层L_(3)灰的特征指标,MgO(0.5%±)、MnO(0.03%±)、P_(2)O_(5)(0.08%±)丰度可作为注浆目的层上覆标志层J3的识别指标;聚类分析识别模式可有效区分太原组一灰~三灰(L_(1)灰~L_(3)灰);以元素因子得分建立的识别模式可以将太原组碎屑岩夹层与薄层灰岩进行有效区分;以岩样地球化学背景值运行判别模型得到的Fisher判别方程对注浆目的层L_(3)灰岩屑来源解析的准确率为100%。基于上述认识,论证了以确保设计“顺层率”为目标的水平分支孔岩屑地球化学源解析方法应用之可行性,进而提出了一种地面定向钻“顺层率”控制技术方案。本研究基于元素地球化学理论,对地面定向钻岩屑携带的特征地球化学信息进行了目的层层位辨识,在现场快速定量测试技术手段的支持下,可为解决华北型煤田底板灰岩水害区域注浆改造顺层难题提供了新的思路。

关键词：主量元素丰度地球化学识别模式顺层率太原组薄层灰岩底板灰岩水害区域治理

Geochemical characteristics and geological significance of the Neoproterozoic carbonates from northern Anhui Province, China

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Chinese Journal Of Geochemistry 2011年第1期30卷 40-50页

作者： SUN Linhua gui herong CHEN Song MA Yanping HE Zhenyu Department of Geographical and Environmental Sciences Suzhou University Suzhou 234000 China State Key Laboratory of Mineral Deposit Research Department of Earth Sciences Nanjing University Nanjing 210093 China

Petrographical and geochemical studies were carried out of the Neoproterozoic carbonates from northern Anhui Province, China. These carbonates can be subdivided into two types, including purified limestone (PL) and mixed limestone and siliclastic rocks (MLS). PLs are low in Si, Al, Zr and total REE but high in CaO compared with MLSs. Correlations between Zr, Fe2O3, P2O5 and total REE are also less remarkable, indicating that they were not obviously contaminated by continental materials but directly precipitated from seawater. So they can be used for the inversion of paleo-seawater REE patterns. The inversed results indicated that the REE pattern of Neoproterozoic seawater was similar to that of the modern seawater except for the lack of Ce depletion, which was probably affected by the reduced hydrothermal solution. In combination with previous studies, the geochemical trending of these carbonatic samples towards the continental arc in the La- Th-Sc and Th-Sc-Zr/10 diagrams is interpreted as the contamination of arc volcanism. The tectonic background of the southern margin of the North China Craton in the Neoproterozoic was probably related to the Grenville orogeny during the convergence of the Rodinia supercontinent, rather than an intra-plate environment.

关键词：中新元古代碳酸盐岩地球化学安徽省地质意义中国 Rodinia超大陆特征和

煤层底板含水层区域注浆改造浆液扩散范围现场示踪试验

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煤炭学报 2024年第4期49卷 2045-2056页

作者：郭艳桂和荣洪荒陈永青孙晓宇胡荣杰郭祥东赵群戴亚男余浩李俊孙亮高川国家煤矿水害防治工程技术研究中心(宿州学院) 安徽宿州234000 安徽省皖北煤电集团有限责任公司安徽宿州234000 天地科技股份有限公司北京100000 中国科学技术大学地球与空间学院安徽合肥230000

近年来,为解放底板高承压灰岩水上煤炭资源,华北煤田普遍采用地面定向钻技术,对太原组薄层灰岩进行区域性注浆加固改造(习称“底板区域治理”),以全面封堵灰岩岩溶裂隙并阻断垂向导水通道。该技术中,与浆液扩散范围(半径)密切相关的“... 详细信息

近年来,为解放底板高承压灰岩水上煤炭资源,华北煤田普遍采用地面定向钻技术,对太原组薄层灰岩进行区域性注浆加固改造(习称“底板区域治理”),以全面封堵灰岩岩溶裂隙并阻断垂向导水通道。该技术中,与浆液扩散范围(半径)密切相关的“水平分支孔”孔间距设计问题,一直备受学界和业界的广泛关注。皖北矿区底板区域注浆工程量大,特别是深部资源开采,将有数十亿元的注浆工程,有必要查清浆液扩散范围真实数据。为此,以皖北矿区恒源煤矿为研究基地,依托Ⅱ63采区底板区域治理工程,设计并实施浆液扩散范围示踪试验,在中间的水平分支孔(Z8-7)投放荧光剂(示踪剂),在两侧的水平分支孔(Z8-6、Z8-8)以及交叉分支检测孔(Z8JC)取岩屑样鉴别荧光水泥,以获得浆液扩散范围,进而在浆液扩散影响因素分析基础上,构建恒源煤矿底板区域注浆治理浆液扩散范围计算公式。结果表明:①综合岩屑现场及室内鉴别结果分析,获得恒源煤矿Ⅱ63采区底板区域注浆浆液扩散范围为38.3~44.0 m,且水泥分布密集区在水平分支孔浆液扩散范围30 m以内,该区域内注浆效果最佳。②通过现场岩屑快速鉴别与室内岩屑精准鉴别,取得的浆液扩散范围基本一致,证明了荧光示踪浆液扩散范围的有效性。③通过对比分析,认为在计算参数、边界约束等符合实际注浆工况条件下,浆液扩散范围理论计算和数值模拟结果,与现场示踪试验实测结果较为接近。④利用示踪试验过程中的压水试验及注浆参数、钻遇构造及水文地质响应等数据,考虑重力、构造、地下水径流等因素影响,借助SPSS非线性拟合软件,得到恒源煤矿Ⅱ63采区底板区域注浆浆液扩散范围计算公式。⑤基于恒源煤矿受注层实际地质、水文地质条件,利用拟合的浆液扩散范围计算公式得出Ⅱ63采区Z8场地浆液扩散范围为37.8~42.9 m,与浆液扩散范围示踪试验实测结果相近,计算公式可在类似条件下推广应用。本次煤矿底板区域注浆浆液扩散范围现场示踪工程试验,不仅取得了浆液扩散范围的真实数据,而且阐明了浆液扩散与多种地质、水文地质因素之间的内在联系,揭示了超深、超长定向钻注浆浆液扩散机理,构建了浆液扩散范围计算公式,为类似条件下底板区域治理工程水平分支孔孔间距的合理设计提供了参考依据。

关键词：底板区域治理浆液扩散范围示踪试验浆液扩散计算公式皖北矿区恒源煤矿

Characterization of a Lacustrine Shale Reservoir and the Evolution of its Nanopores: A Case Study of the Upper Cretaceous Qingshankou Formation in the Songliao Basin, Northeastern China

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Acta Geologica Sinica(English Edition) 2020年第2期94卷 337-351页

作者： ZHANG Xu LIU Chenglin LI Bing WU Linqiang gui herong WANG Ziling ZHANG Zhihui LIANG Dexiu State Key Laboratory of Petroleum Resource and Prospecting China University of PetroleumBeijing 102249China College of Geosciences China University of Petroleum.Beijing 102249China National Engineering Research Center of Coal Mine Water Hazard Controlling(Suzhou University) SuzhouAnhui234000China Geological Exploration Technology Institute of Anhui Province Hefei 230031China Development and Research Center China Geological SurveyBeijing 100037China

The Songliao Basin is one of the most important petroliferous basins in northern China. With a recent gradual decline in conventional oil production in the basin, the exploration and development of unconventional resources are becoming increasingly urgent. The Qingshankou Formation consists of typical Upper Cretaceous continental strata, and represents a promising and practical replacement resource for shale oil in the Songliao Basin. Previous studies have shown that low-mature to mature Qingshankou shale mainly preserves type Ⅰ and type Ⅱ1 organic matter, with relatively high total organic carbon(TOC) content. It is estimated that there is a great potential to explore for shale oil resources in the Qingshankou Formation in this basin. However, not enough systematic research has been conducted on pore characteristics and their main controlling factors in this lacustrine shale reservoir. In this study, 19 Qingshankou shales from two wells drilled in the study area were tested and analyzed for mineral composition, pore distribution and feature evolution using Xray diffraction(XRD), scanning electron microscopy(SEM), low-pressure nitrogen gas adsorption(N2-GA), and thermal simulation experiments. The XRD results show that clay, quartz, and feldspar are the dominant mineral constituents of Qingshankou shale. The clay minerals are mostly illite/smectite mixed layers with a mean content of 83.5%, followed by illite, chlorite, and kaolinite. There are abundant deposits of clay-rich shale in the Qingshankou Formation in the study area, within which many mineral and organic matter pores were observed using SEM. Mineral pores contribute the most to shale porosity;specifically, clay mineral pores and carbonate pores comprise most of the mineral pores in the shale. Among the three types of organic matter pores, type B is more dominant the other two. Pores with diameters greater than 10 nm supply the main pore volume;most are half-open slits and wedge-shaped pores. The total por

关键词： lacustrine shale pore structure pore evolution Upper Cretaceous Songliao Basin

Hydrochemical characteristics and water quality evaluation of shallow groundwater in Suxian mining area,Huaibei coalfield,China

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International Journal of Coal Science & Technology 2020年第4期7卷 825-835页

作者： Hao Yu herong gui Honghai Zhao Meichen Wang Jun Li Hongxia Fang Yaqi Jiang Yaru Zhang School of Earth and Environment Anhui University of Science and Technology.Huainan 232001AnhuiChina National Engineering Research Center of Coal Mine Water Hazard Controlling(Suzhou University) Suzhou 234000AnhuiChina 'Anhui Provincial Bureau of Coal Geology Hydrologic Exploration Team Suzhou 234000 AnhuiChina School of Resources and Environmental Engineering of Hefei University of Technology Hefei 232000.Anhui.China

The aim of this study is to evaluate the hydrogeochemical characteristics and water environmental quality of shallow groundwater in the Suxian mining area of Huaibei coalfield,*** natural formation process of shallow groundwater in Suxian is explored using Piper trilinear charts and Gibbs diagrams,and by examining the ratios between the major *** States Salinity Laboratory(USSL)charts,Wilcox diagrams,and the water quality index(WQI)are further employed to quantify the differences in water *** results reveal that the main hydrochemical facies of groundwater are HC03-Ca,and that silicate dissolution is the main factor controlling the ion content in shallow *** USSL charts and Wilcox diagrams show that most of the water samples would be acceptable for use in irrigation *** WQI results for each water sample are compared and analyzed,and the quality of groundwater samples around collapse ponds is found to be relatively poor.

关键词： Shallow groundwater Hydrochemical characteristics Water-rock interaction Evaluation of water environment quality Suxian mining area

宿南矿区地下水同位素地球化学特征及地质意义

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地学前缘 2016年第3期23卷 133-139页

作者：桂和荣陈松宿州学院资源与土木工程学院安徽宿州234000 国家煤矿水害防治工程技术中心安徽宿州234000

煤矿区地下水既是重要的地下水资源,又影响煤矿安全生产。为了解宿南矿区地下水同位素化学特征,采集了宿南矿区松散层水、砂岩水和灰岩水样品进行T、D、^(18)O、^(87)Sr/^(86)Sr和溶解碳酸盐岩中^(13)C、^(18)O等同位素测试分析,并利用... 详细信息

煤矿区地下水既是重要的地下水资源,又影响煤矿安全生产。为了解宿南矿区地下水同位素化学特征,采集了宿南矿区松散层水、砂岩水和灰岩水样品进行T、D、^(18)O、^(87)Sr/^(86)Sr和溶解碳酸盐岩中^(13)C、^(18)O等同位素测试分析,并利用传统图示等方法探讨了地下水演化年龄、同位素特征及影响因素。结果表明:矿区3个含水层地下水中T含量较低,整体反映了矿区地下水多位时间久远的亚现代水补给;地下水中D、^(18)O受到明显围岩的影响,其组成为-68.5‰^-44.3‰和-8.78‰^-6.29‰,平均值分别为-61.15‰和-8.16‰;围岩中碳酸盐岩含量决定了^(13)C_(DIC)与^(18)O_(DIC)的变化关系;^(87)Sr/^(86)Sr值为0.710 6~0.712 3,平均为0.711 2,^(87)Sr/^(86)Sr比值主要受到了水岩作用的影响,可以有效地识别3个不同含水层水源。

关键词：地下水同位素地球化学宿南矿区