铜陵翠湖公园水体污染生态治理

翠湖的主体部分位于铜陵市翠湖公园内,是一处受到人为污染的景观水体。以翠湖治理为例,结合水利防洪、生态工程和园林绿化等原理,通过生态净化系统的自净能力对其进行深度治理。初期运行结果表明,透明度、DO和COD等理化指标达到预期的地表水环境质量V类标准;而氨氮和总磷含量得到明显控制,该区域内氨氮和总磷最低含量分别达到4.91 mg/L和0.447mg/L,接近V类水质标准,整体水质情况得到全面改善。     

Rare earth element geochemistry of groundwaters from coal bearing aquifer in Renlou coal mine, northern Anhui Province, China

Rare earth element (REE) concentrations of two different types of groundwaters (high SO42–water-SW and high alkaline waterCW) from coal bearing aquifer (–400~–280 m) in Renlou coal mine,northern Anhui Province,China were measured.The results indicated that they had different REE characteristics: the total concentrations of REEs (ΣREE) of SW were lower than those of CW in general although they all had heavy REEs enriched relative to light REEs.The dissolved REE inorganic species of SW included Ln3+,LnCO3+,LnSO4+,Ln(CO3)2– and Ln(SO4)2–,whereas the CW are Ln(CO3)2– and LnCO3+ dominant,and the proportions of Ln(CO3)2– increased while other species decreased with pH increasing.Combined with correlation analysis,the enrichment and fractionation of SW (low alkaline water) were considered to be affected by alkaline concentrations via affecting the types and proportions of REE inorganic species.However,the effect of alkaline concentrations to the enrichment and fractionation of REEs of CW (high alkaline water) was less important than total dissolved solids and pH,which reflected the contribution from different rocks they flowed over,different degrees of water-rock interactions and/or REE solid-liquid partition coefficients.     

河流污染二维水质模型研究及RMA4模型概述

介绍二维水质模型常用的模拟手段、建模求解步骤的要点难点,并在此基础上对RMA4水质模型的特点进行详细归纳和分析,最后探讨河流水质模型的未来发展趋势,从而为建立二维河流水质模型进行水质模拟提供一定的思路和依据.     

皖北矿区主要含水层微量元素的地球化学特征研究

通过现场取样测试和对区域地质背景条件进行调查，研究含水层水化学特点与微量元素的相关关系，分析了微量元素与常规离子、pH值以及微量元素与地壳岩石中微量元素平均丰度的关系，为准确预测和判断突水水源，建立突水水源判别模式提供了理论基础。     

厚松散层及超薄覆岩放顶煤开采冒裂高度模拟研究

通过对厚松散层及超薄覆岩水体下放顶煤开采的相似模拟研究 ,得出不同采放比条件下覆岩最大冒高和有效裂高位置。研究结果应用淮北芦岭矿 81 0采区 ,在防水煤柱内不留煤柱进行放顶煤开采 ,经过两个工作面的成功试采 ,已经取得了显著技术经济效益     

综放开采最大导水裂隙带高度的应力法预测

在重点模拟大采高条件下覆岩低抗拉特性的基础上，建立了“大采高ＦＥＭ－ＮＴＡ耦合模型”．选择了合适的屈服准则、流动法则及应力应变本构关系，综合优选输入参数，于淮南矿务局新集矿实施了该“耦合模型”．预测裂采比为１０．６０～１０．８５倍．经钻探验证，取得了较为理想的预测精度．     

Geochemistry of rare earth elements in groundwater from deep seated limestone aquifer in Renlou Coal Mine, Anhui Province, China

Rare earth element (REE) concentrations were measured by ICP-MS for groundwater collected from deep seated Taiyuan Fm limestone aquifer (from-400 to-530 m) in Renlou Coal Mine,northern Anhui Province,China.It can be concluded that the groundwater is warm (34.0-37.2 °C) Cl-Ca,Na type water with circum-neutral pH (7.35-8.28) and high total dissolved solids (TDS,1 746-2 849 mg/L).The groundwater exhibits heavy REEs enrichment relative to light REEs compared with Post Archean Average Shale (PAAS),as well as the...     

矿区塌陷塘水体主要营养盐的调查分析

为了探讨矿区塌陷塘水体营养状况的时空变化特征,从中找出其主要营养盐的内在演替规律,采用紫外分光光度法、气象色谱法等对随机抽样所得样品检测、分析,研究其主要指标的内在变化规律.结果表明:TN、TP的变化与叶绿素a(Chl.a)的变化并非完全正相关,TN的含量随塌陷时序有一定的累积效应,而TN、TP与Chl.a的时空变化又有各自的特点,其水体生态环境也有明显特殊性.塌陷塘的营养状况演替变化不同于一般的内陆湖泊及海洋,有较明显的特殊性.     

淮北煤田地下水微量元素贝叶斯多类线性判别分析

在淮北煤田主要含水层水中微量元素及常规离子测试分析的基础上，建立了微量元素Bayes多类线性判别模型。分析结果表明，在以As、Ba、Co、Cr、Cu、Se、V等7种特征微量元素为解释变量的Bayes多类线性判别函数中，Co与Cu对水源判别所起的作用较大，Ba最小。Ca^2 、Mg^2 、K^ Na^ 、Cl^-、SO4^2-、HCO3^-等7种常规离子在判别函数中的系数绝对值相差不大。没有发现判别效果较强的常规离子，但经常规离子修正的微量元素Bayes多类线性判别模型具有很好的判别效果。     

皖北矿区深部地下水环境同位素混合模式研究

利用皖北矿区各含水层长观孔和矿井下的深层水疏放孔对4个主要突水含水层取样,测试其氢氧稳定同位素组成,建立并分析了矿区地下水的混合模式及水力联系特征.在此基础上,计算了地下水补给区平均标高与温度,即：太灰水与奥灰水补给区平均标高均大于130 m,四含水和煤系水补给区平均标高在30 m以下;4个含水层大气降水补给温度均在5℃左右.