论文标题:地下采动影响下水工建筑物的危害预测分析
Damage Prediction on Hydraulic Structures with Underground Mining
论文作者
论文导师 束一鸣,论文学位 硕士,论文专业 水工结构工程
论文单位 河海大学,点击次数 794,论文页数 101页File Size8093k
2006-03-01论文网 http://www.lw23.com/lunwen_339272/
Underground mining;The Prediction For Endangerment;Probability Integration method;Numerical Simulation;Fast Lagrangian Analysis of Continuain 3 Dimensions;Comparision and Analysis
随着经济高速发展,能源短缺问题伴随而来,这些促使煤炭工业加速发展。但是由于地下开采引起地表产生的移动和变形,破坏了建筑物与地基之间的初始平衡状态。伴随着力系平衡的重新建立,使建筑物和构造物中产生附加应力,从而导致建筑物和构造物发生变形,严重时将遭到破坏。因此对采煤造成的影响作出比较准确的预计,并预先采取足够的安全措施,是非常重要和必要的。本文结合山东省新安二号井湖区采煤的具体情况,分别用概率积分法和三维快速拉格朗日有限差分法对其进行预测,然后对两种方法得出的预测值进行对比分析,从而判断出两种方法各自的优劣点,以及这两种方法各适用于何种情况。 主要内容如下: 1、回顾总结了损害的预测分析方法,以及我国常用的预测分析方法。 2、对概率积分法进行了深入研究,并运用此理论对湖东大堤新安二号井矿段进行了预测分析,得出一系列预测值。 3、同样对三维快速拉格朗日有限差分法进行了深入研究,并运用此理论对湖东大堤新安二号井矿段也进行了预测分析,同样得出一系列预测值。 4、详细的介绍新安二号井的工程概况和已经开采工作面及其冒落后地面移动变形的观测情况。 5、通过比较分析两种方法评价指标的不同以及评价效果与实际情况符合程度的不同,以此判断出两种方法的优劣点和两种方法各适用于何种情况。 6、对本文的工作做简单的总结,并对进一步的比较分析两种方法提出了展望。
With the high speed development of economy,the energy shortage problem comes about, which impel coal industry to develop with higher speed. However, the displacement and deformation of surface ground by underground mining have destroyed initial equilibrium between the building and the ground. Additional stress comes about in the building and structure with the result of reestablishment of equilibrium on forces system ,and the additional stress leads building and structure to deform,even to be destroyed when status being serious. So it is very important and essential to accurately predict the influence of coal mining and take enough safety measures in advance. According to the status of mining under lake in the No.2 well of XIN"AN,SHANDONG province,this paper respectively predict the displacement and deformation of surface ground with Probability Integration method and Fast Lagrangian Analysis of Continuain 3 Dimensions (FLAC~(3D) is a three-dimensional explicit finite-difference program),then compare and analyse the forecasts,which determine the respective advantages and disadvantages of the two methods,and under what circumstances the two methods are applied respectively.The main work this paper do are these like below:1 、 This paper reviewed and summarized the prediction methods for endangerment, and the common prediction methods used in our country.2、 Introduced and studied Probability Integration method, and used the theory to predict the endangerment of HUDONG Bank in the No.2 well of XIN" AN,and resulted in a series of forecasts.3、 Introduced and studied FLAC3D, and also using the theory to predict the endangerment of HUDONG Bank in the No.2 well of XIN" AN,and resulted in a series of forecasts.4、 This paper introduced detailedly the overview of engineering in the No.2 well of XIN"AN,and introduced the working face having been mined and the observation of displacement and deformation of surface ground after falling backward.5、 Through comparing and analysing two methods of evaluation indicators and the coincident degrees between the results by evaluating the actual situation, which determine the respective advantages and disadvantages of the two methods,and give the conclusion of what circumstances the two methods are applied to respectively.6、 Summarizing textual work in brief and puting an outlook on the further comparison and analysis of the two methods.
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