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Based on theoretical calculation and in-situ test results,distribution and emissions of radioactive nuclides of uranium tailings impoundment and waste rock pile sites are analyzed in this paper.

本文从理论计算和现场实测入手,分析了铀尾矿废石场放射性核素的分布、排放量,指出氡是铀尾矿废石场中的主要核素,是公众剂量的主要贡献者。

This paper introduces the ore drawing process with the natural caving method and the characteristics of each stage, expounds the flow of the ore drawing management with the natural caving method , and probes into some measures that should be adopted in the special condition to reduce the interfusion of waste rock.

介绍了自然崩落法的放矿过程及各阶段的特点,阐述了自然崩落法放矿管理流程,探讨了在特殊条件下应采取的特殊措施,以减少废石的混入。

This study chose the dahongshan mine which has very important significance to the developing of yunnan iron and steel industry as our work station in which we build six runoff plots according to loss type and chose three place to earth up to observe the rule of the soil moving on the mullock stone and study the eroding rule of the barren side slope with eroding nail experiment.

本研究选择新建的、对云南钢铁工业发展具有重要意义的大红山铁矿进行矿山水土流失研究,按土壤侵蚀类型建立六个径流场进行观测,利用侵蚀钉对人工堆积边坡、裸露自然边坡和公路边坡侵蚀进行研究,在废石场选择三个点进行覆土实验对废石场覆土的潜移和管状侵蚀量进行观测。

It shows that the particle vibration velocity is related to the maximum single sound charge,distance from the blasting point uo the measured point,types of explosive and blocking condition.While transforming opencast mining into underground mining,if a goave is filled up with gangues,the surface rock mass of slope ca...

在露天转地下开采时,如果对采空区充填废石,不仅可以使边坡表面岩体处于有利的三向受力状态,回填废石体还起到了爆破减震作用,同时还有明显的高频滤波作用,有利于保持地下巷道的稳定性。

They are subaerially exposed to weathering and disintegration, resulting in leaching and removal of...

废石暴露地表而遭受风化分解,导致Sc、V、Cr、U、Cd、Th等重金属元素淋滤释出,在废石样品中均表现出不同程度的迁移特征,且以V、Cd、U的迁移性最为强烈。

At the first, the paper describes the importance and the present status of the application of wasteless mining in our country, and gives a special discussion for its conception ,research approaches, and some apply pathways for wasteless mining, then makes a brief description of decision-making and optimizing theories and methods applied in the paper's design and appraisal for the wasteless mining.

另外,为合理地控制采切时废料的混入,在采矿方法设计中还引入了衡量采准工作的采切废石混入率的标准与计算方法。采矿工艺过程的优化,主要是要设计选用最合适的采矿方案与最合适的采矿工艺。这是实现无废开采极为重要的一个方面,它直接影响着矿山的开采效益与无废开采效果。

Therefore, it has become an important development direction for our mining industry to protect mine's environment, and to keep mine production with continuance and steadiness for a long periodWithin recent years, many new problems were brought forward through wasteless mining experience, in which, the right design and objective appraise for the wasteless mining is one of its problems.

另外,作者在研究中提出的一些独到的见解与方法,对发展与完善无废开采设计与评价的理论体系有重要的意义。我们知道,实现无废开采的关键:一方面是要尽量扼制废料的产出,另一方面是要寻找有效的方法对产出的废料进行治理。而要扼制废料的产出,必须要根据矿山开采的特点,合理确定开采品位,减少废石的采掘,控制采矿过程中废石的混入。

Basic status on waste rock pile s of an uranium mine in Jiangxi province before its decom- missioning is introduced.

在介绍废石场现状的基础上,针对废石含硫化物的特点,阐述了废石场的治理措施。

They used limestone of different quality and large-fluctuant-range waste stone in proportion and substituted a part of clay with clay stone to produce cement. And the physical performance of the produced Portland cement was improved greatly-28 d strength increased from 50.4MPa to 54.5MPa, and output of the rotary kiln increased. Moreover, the company also tried to use green shale as admixture to produce compound cement and successfully produced compound Portland cement with a little low early strength and a little higher 28d strength than slag Portland cement. And the cement cost decreased 19.59 yuan per ton.

将CaO含量波动范围较宽的废石与不同品位石灰石按比例搭配使用,将其粘土质特性的废石替代部分粘土生产;而且生产的硅酸盐水泥熟料物理性能有较大提高,28d强度由原来的50.4 MPa提高到54.5 MPa,窑产量也有一定的提高;此外,该公司还进行了将绿色页岩作混合材生产复合水泥的生产探索,成功生产出了早期强度略低,但28d强度略高于矿渣硅酸盐水泥的复合硅酸盐水泥,且使水泥生产成本降低19.59元/t。

At present, the researches at home and abroad concentrate on aquatic environmental influence of mine tailing and coal-gangue, but seldom focus on waste rock , which contrasts sharply with the present status of a large amount of waste rock pile in my country.

目前,国内外研究多集中于尾矿和煤矸石的水环境影响,对废石衍生水环境效应的过程、机制、影响因素研究甚少,这与我国大量废石的堆放现状形成了鲜明的对比,所以本文研究金属硫化矿业废石对水环境的影响有一定的实际意义。

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