【作者】 汪凯举；

【导师】 陶月赞；

【作者基本信息】 合肥工业大学 ， 市政工程， 2009， 硕士

【摘要】 以当涂县中桥南铁矿矿坑涌水量风险分析和矿排水综合利用为研究目标,在矿区地质普查成果的基础上,确定详查中水文地质勘查程度、设计相应的工作内容;在对包括详查在内的野外勘查资料进行综合分析与整理的基础上,综述该铁矿区域和矿区的地质与水文地质条件,建立水文地质概念模型与相应的数值模拟模型;结合矿山开采的初步方案,预测矿坑正常涌水量,并进行相关的风险分析;在分析生产各环节需水水质要求与水量变化、矿坑涌水水质条件与水量变化过程的基础上,从环境保护与水资源节约角度,计算矿山生产需用水量,研究水资源综合利用方案。基于承压转无压井公式运用Monte Carlo法计算涌水量预测值风险概率的思路如下:进行不确定分析,利用灵敏度分析法确定主要风险因子;基于承压转无压流公式运用Monte Carlo法生成涌水量随机数;依据贝努利定理计算涌水量风险率。矿坑涌水量预测,数值法较解析法更贴近现实,东区在三年内涌水量计算值序列平均值为5874.6m~3/d,西区为28895m~3/d;西区第一种情况(见3.2.2.2节),69298.97m~3/d风险率为0.4333,第二种情况37579.07m~3/d风险率为0.3144;东矿段污废水循环使用率达到78.55%,并实现无害排放,生产供水保证率为100%,西矿段第一种情况下的生产供水保证率为100%,第二种情况下的生产供水保证率为99.91%。更多还原

【Abstract】 Risk analysis of pit’s water inflow and multiple utilization of water resource in Zhongqiaonan iron mine were regarded as disquisitive target,we ascertained hydrological geological perambulation’s extent and designed related working content basing on the result of diggings’ geologic survey;on basis of multiple analysis and arrangement of field perambulation’s datum which included detailed perambulation’s report,we summarized area and diggings’ geological and hydrological geological condition of the iron mine,established the hydrological geological conceptual model and corresponding numeric simulative model;we forecast water inflow in layer and made correlative risk analysis combining mining’s primary scheme;on the basis of analysing water quality’s demand and water volume’s change of water need in each tache of production,qualification of water quality and process of flow’s change of pit’s gushing water,in terms of environmental protection and saving of water resource,we calculated mine’s producing water requirement and studied multiple-utilizing scheme of water resource.Basing on flow formula of artesian-phreatic well and Monte Carlo method,train of thought of calculating risk probability of pit’s water inflow was as follows:making uncertainty analysis,utilizing method of sensitivity analysis ascertianing main risk factors;making random numbers of pit’s water inflow;according to Bernoulli theorem calculating risk ratio.For predicting pit’s water inflow,numerical method comparing with analytic method more closing to reality,the average of a series of calculational value for pit’s yield was 5874.6m~3/d in east ore block at three years,the average was 28895m~3/d in west ore block;in the first situation of west ore block(section 3.2.2.2 for details),risk ratio of pit’s yield was 0.4333 to 69298.97m~3/d;in the second condition risk ratio of pit’s yield was 0.3144 to 37579.07m~3/d;in east ore block,ratio of sewage and re-use was 78.55% and utilization harmlessly discharging can be achieved for water resources,reliability of water supply for production was 100%,in west ore block the reliability was 100%in the first condition and 99.91%in the second condition.更多还原