河南瑞平煤电(集团)庇山矿充水因素分析

通过对河南省汝州市庇山煤矿区的水文地质条件分析,认为矿井主要充水水源为上部老窑积水、第四系孔隙水、砂岩裂隙水及灰岩岩溶裂隙水.除第四系松散孔隙含水层富水性较强外,其它各含水层富水性均较弱,对井下煤层开采威胁不大,老窑积水是构成上部煤层开采充水的主要因素,充水通道为采空塌陷带及构造断裂带.建议开展水文地质物探工作,为矿井防治水提供参考依据.     

贵州省织金矿区少普井田水文地质特征及其对开采的影响

结合邻区矿井开采数据,对井田内地形地貌、构造、地表水以及地下水等水文地质特征进行分析研究,认为井田水文地质条件简单,地表水、老窑水对矿井开采影响不大,断层导水性弱,渗透途径为冒落裂隙带;矿井初期开采煤层时直接充水水源为长兴组、大隆组等岩溶裂隙水、龙潭组砂岩裂隙水,其次为老窑积水,充水通道为冒落裂隙带;中后期开采时,直接充水水源为大气降水以及河流、溪沟水。由于峨眉山玄岩的阻隔,茅口组强含水层对矿井开采没有影响。     

永夏煤田顺和煤矿水文地质特征分析

本文结合区域水文地质条件,对矿井主要含水层和隔水层进行了分析和评价。对矿井主采二2煤层充水因素进行了分析,尤其是断层构造。指出山西组煤层顶板砂岩裂隙水为二2煤层充水的重要因素之一,导水断裂构造、封闭不良钻孔等可能导通石炭系太原组灰岩岩溶裂隙含水层和奥陶系灰岩岩溶裂隙含水层,可造成突水淹井事故。     

河南新密煤田二1煤层充水特征分析

新密煤田在开采二1煤层时,矿井涌水量从每小时数立方米到上千立方米,差别极大,个别矿井因水量太大多年达不到设计开采能力。在研究矿区水文地质条件的基础上,分析了煤层的充水特征,认为煤层的顶板直接充水含水层是二叠系下统下石盒子组底部的砂岩裂隙水,底板直接充水含水层是石炭系太原组灰岩岩溶裂隙含水层,奥陶系岩溶裂隙含水层是煤层底板间接充水含水层;通常情况下顶板水不会对采煤构成威胁,灾害性突水主要来源于煤层底板;石炭系灰岩含水层与奥陶系灰岩含水层水力联系较密切,通常矿井大的涌水都有奥陶系灰岩水参与;大隗断层使得区内寒武系中上统灰岩直接与二叠系石千峰组砂、页岩接触,隔断了南北两侧的水力联系,并将矿区分割为两个水文地质亚区;矿井在开采深度在+50m标高以上时,充水水源主要来源于煤层顶板,底板无水,在开采深度在+50m以下时,矿井涌水量相对较大,随着开采深度的增加,矿井涌水量有逐渐减小的趋势。该研究对确定矿井充水因素,进行突水预防具有指导和借鉴意义     

吴堡矿区首采地段水文地质特征及矿床充水条件分析

从鄂尔多斯盆地东部地下水类型、含水岩组等区域水文地质条件入手,对陕北石炭二叠纪煤田吴堡矿区首期开采地段水文地质条件进行了分析。分析表明,区内第四系松散层含水层在首采区虽然分别较广,但水量相对较小,正常情况下与其下含水层贯通的可能性较小,对于煤矿开采影响较小;基岩风化裂隙潜水、太原组灰岩溶隙裂隙及砂岩裂隙承压水及奥陶系灰岩岩溶承压水是煤矿开采中最为主要的突水类型。从矿坑充水水源、充水通道和充水强度角度对首期开采地段进行了矿床充水因素的研究。研究认为,矿井充水水源为煤层顶底板砂岩裂隙水、灰岩裂隙溶隙承压水及奥陶系岩溶承压水;充水通道主要是煤层开采后顶板形成的冒落带和导水裂隙带以及底板受其承压水的影响而产生的破坏带。建议在矿井设计前对首采地段进行三维地震勘探,进一步查明区内断层性质、规模和易发生矿井涌水的部位,为建井设计、矿坑底板的突水和防治提供依据。     

黄陵二号煤矿充水因素分析

通过对黄陵二号煤矿充水因素的分析,结合矿井实际涌水量,认为矿井在开采延安组2号煤层时,延安组中部含水层为矿井的直接充水含水层,直罗组下段含水层为矿井主要的间接充水含水层;上部的洛河组砂岩水是矿井井筒充水的主要水源,也是矿井充水的间接充水含水层;矿井的主要充水通道为开采沉陷裂隙,充水方式为顶板进水。最后指出,该矿井开采2号煤层的最大隐患是直罗组下段砂岩顶板突水和井筒洛河组砂岩涌水。     

淮北煤田矿井充水因素与防治水措施研究

淮北矿区矿井突水的主要充水水源是老窑积水、新生界松散层底部含水层（组）水、煤层顶、底板砂岩裂隙水、太原组与奥陶系灰岩水。矿井众多重大突水事故表明，加强太原组、奥陶系石灰岩含水层和断层破碎带的探测与疏放工作，是降低煤矿突水风险的必要条件。     

徐州三河尖煤矿充水因素分析及防治水对策

在介绍矿区地质及水文地质条件的基础上,对矿井的充水因素进行了较为全面的分析,指出矿井的主要充水水源是山西组砂岩裂隙水、太原组灰岩岩溶裂隙水和奥陶系灰岩岩溶水;充水通道主要是断层破碎带和隐伏陷落构造,其次是采矿形成的冒落带和导水裂隙带。结合历年的突水资料,分析了三河尖煤矿历次发生水害事故的原因。针对煤矿充水特征,提出了在预防煤层顶板砂岩裂隙水和太原组灰岩岩溶水时,要以超前疏放为主,对奥陶系灰岩岩溶水,则应以＂防＂为主。     

梁北二井水文地质特征及充水因素探讨

通过对井田边界条件、主要含水层的富水特征、断层的水文地质特征以及地下水的补给、径流及排泄条件的分析研究,认为二1煤层顶板的直接充水水源为顶板砂岩裂隙水,底板的直接充水水源为石炭系太原组上段石灰岩岩溶裂隙水,底板的间接充水水源为石炭系下段太原组灰岩岩溶裂隙水和寒武系白云质灰岩岩溶裂隙水;矿井充水通道为顶板砂岩、底板灰岩的裂隙和断层带。采用大井法对先期开采地段二1煤层-700m水平的矿井涌水量进行了预算：正常涌水量为947m^3/d,最大涌水量为1140m^3/d。结合邻近矿井的调查,认为计算的涌水量是可靠的,可作为煤矿建井设计和水害防治的依据。     

平禹一矿充水因素分析及防治水措施

本文通过对平禹一矿地质条件、水文地质条件、矿井充水因素的分析,认为煤层底板石炭系薄层灰岩和寒武系厚层灰岩岩溶水是主要充水水源;岩溶裂隙、断层、采动裂隙和封闭不良钻孔是煤层底板岩溶水充水通道。并根据所存在的问题提出针对性的防治水措施,为矿井防治水工作提供参考依据和建议。     

The terrestrial fauna of the Late Triassic Pant-y-ffynnon Quarry fissures,South Wales,UK and a new species of Clevosaurus (Lepidosauria: Rhynchocephalia)

Pant-y-ffynnon Quarry in South Wales yielded a rich cache of fossils in the early 1950s, including articulated specimens of new species (the small sauropodomorph dinosaur Pantydraco caducus and the crocodylomorph Terrestrisuchus gracilis), but no substantial study of the wider fauna of the Pant-y-ffynnon fissure systems has been published. Here, our overview of existing specimens, a few described but mostly undescribed, as well as freshly processed material, provides a comprehensive picture of the Pant-y-ffynnon palaeo-island of the Late Triassic. This was an island with a relatively impoverished fauna dominated by small clevosaurs (rhynchocephalians), including a new species, Clevosaurus cambrica, described here from a partially articulated specimen and isolated bones. The new species has a dental morphology that is intermediate between the Late Triassic Clevosaurus hudsoni, from Cromhall Quarry to the east, and the younger C. convallis from Pant Quarry to the west, suggesting adaptive radiation of clevosaurs in the palaeo-archipelago. The larger reptiles on the palaeo-island do not exceed 1.5?m in length, including a small carnivorous crocodylomorph, Terrestrisuchus, and a possible example of insular dwarfism in the basal dinosaur Pantydraco.     

Définition d'une limite multicritère ; stratigraphie du passage Campanien–Maastrichtien du site géologique de Tercis (Landes,SW France)Definition of a multi-criteria boundary; stratigraphy of the Campanian–Maastrichtian interval of the geological site at Tercis (Landes,SW France)

Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414.     

The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts

The solubilities of columbite, tantalite, wolframite, rutile, zircon and hafnon were determined as a function of the water contents in peralkaline and subaluminous granite melts. All experiments were conducted at 1035 °C and 2 kbar and the water contents of the melts ranged from nominally dry to approximately 6 wt.% H₂O. Accessory phase solubilities are not affected by the water content of the peralkaline melt. By contrast, solubilities are affected by the water content of the subaluminous melt, where the solubilities of all the accessory phases examined increase with the water content of the melt, up to 2 wt.% H₂O. At higher water contents, solubilities are nearly constant. It can be concluded that water is not an important control of accessory phase solubility, although the water content will affect diffusivities of components in the melt, thus whether or not accessory phases will be present as restite material. The solubility behaviour in the subaluminous and peralkaline melts supports previous spectroscopic studies, which have observed differences in the coordination of high field strength elements in dry vs. wet subaluminous granitic glasses, but not for peralkaline granitic glasses. Lastly, the fact that wolframite solubility increases with increasing water content in the subaluminous melt suggests that tungsten dissolved as a hexavalent species.     

Late Wuchiapingian (Late Dzhulfian,early Late Permian) limestone olistolites within the Tertiary flysch of Glypia Unit (Mount Parnon,central–eastern Peloponnesus,Greece)

Some olistolites reworked in a Tertiary flysch of Mount Parnon (Peloponnesus, Greece) exhibit a Late Permian assemblage, dominated by Paradunbarula (Shindella) shindensis, Hemigordiopsis cf. luquensis and Colaniella aff. minima. This association corresponds to the Late Wuchiapingian (=Late Dzhulfian), a substage whose algae and foraminifera are generally little known. Contemporaneous limestones crop out in the middle part of the Episkopi Formation in Hydra, but they are rather commonly reworked in Mesozoic and Cainozoic sequences. The palaeobiogeographical affinities shared by the foraminiferal markers of Greece, southeastern Pamir, and southern China, are very strong (up to the specific level), and are congruent with the Pangea B reconstructions. To cite this article: E. Skourtsos et al., C. R. Geoscience 334 (2002) 925–931.     

PALEONTOLOGY

正20141596 Liu Yunhuan(School of Earth Sciences and Resources,Chang’an University,Xi’an 710054,China);Shao Tiequan Early Cambrian Quadrapyrgites Fossils of Xixiang Boita in Southern Shaanxi Province(Journal of Earth Sciences and Environment,ISSN1672-6561,CN61-1423/P,35(3),2013,p.39-43,3 illus.,20 refs.)     

GEOCHEMICAL EXPLORATION

正20141719 Chen Zhijun(State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Wuhan 430074,China);Chen Jianguo Automated Batch Mapping Solution for Serial Maps:A Case Study of Exploration Geochemistry Maps(Journal of Geology,ISSN1674-3636,CN32-1796/P,37(3),2013,p.456-464,2 illus.,2 tables,10 refs.)     

MICROPALAEONTOLOGY

正20140962 Chen Fenning(Xi’an Institute of Geology and Mineral Resources,Xi’an710054,China);Chen Ruiming Late Miocene-Early Pleistocene Ostracoda Fauna of Gyirong Basin,Southern Tibet(Acta Geologica Sinica,ISSN0001-5717,CN11-1951/P,87(6),2013,p.872-886,6illus.,56refs.)     

PETROLOGY

正1.IGNEOUS PETROLOGY20142008Cai Jinhui(Wuhan Center,China Geological Survey,Wuhan 430205,China);Liu Wei Zircon U-Pb Geochronology and Mineralization Significance of Granodiorites from Fuzichong Pb-Zn Deposit,Guangxi,South China(Geology and Mineral Resources of South China,ISSN1007-3701,CN42-1417/P,29(4),2013,p.271-281,7illus.,     

ENVIRONMENTAL GEOLOGY

正20141205Cheng Weiming(State Key Laboratory of Resources and Environmental Information System,Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China);Xia Yao Regional Hazard Assessment of Disaster Environment for Debris Flows:Taking Jundu Mountain,Beijing as an     

PROSPECTING EXPLORATION

正20141266Fan Chaoyan(Guangdong Provincial Key Laboratory of Mineral Resources and Geological Processes,Guangzhou 510275,China);Wang Zhenghai On Error Analysis and Correction Method of Measured Strata Section with Wire Projection Method(Journal of