【作者】 雷斌；

【导师】 戚蓝；

【作者基本信息】 天津大学 ， 水利水电工程， 2004， 硕士

【摘要】 挑流消能作为高水头、大流量、深峡谷水电站的主要消能方式之一，效果比较理想，但同时带来了严重的泄流雾化现象，对下游岩质边坡的稳定造成极不利的影响，日益引起国内外学者的关注。基于此，本文主要作了以下几方面的研究：首先，定性分析了水电站泄流雾化问题的复杂性。阐明无论理论分析、模型试验还是原型观测均有其局限性，即使采用多种方法进行研究与分析，也很难准确计算泄流雾化雨的影响范围和程度。其次，分析了边坡地质问题的复杂性，说明确定性计算方法的局限性，采用抽象的数学模型所求得的确切解与实际情况相比必然会存在很大的偏差。然后，以龙羊峡水电站泄流雾化雨对岩质边坡的作用为例，用三维有限元和三维渗流场分析滑坡过程的产生机理，说明现有分析方法存在较多的不足，很多不确定因素很难用确定性计算的方法取得。接着，建立模糊综合评判模型，采用与确定性计算以相互结合、相互补充的形式，评判龙羊峡水电站泄流雾化雨对岩质边坡稳定的影响。结果表明，只有依靠确定性计算和模糊综合评判相结合的方法，才能获得比较满意的评判结果。最后，利用龙羊峡虎山坡处理后的模糊综合评判结果，提出了下一步的处理建议。本文采用的关联因素指标集是一个可变化的空间，虽然不一定全面，但它依据不同的分析条件和分析目的而改变，并不影响该分析成果的可靠性，反而更突出了这一方法的灵活性、独特性和科学性。更多还原

【Abstract】 Trajectory energy dissipator, as one of main dissipator ways of hydropowerstation that locate in deep valleys and with high water head and large dischargecapacity, is much effective. But discharge atomization causing from trajectory energydissipator is often serious and has badly impact on downstream rock slope stability,which is arousing attention of some domestic and oversea scholars. Base on this,following studies are done in this paper. To begin with, the complexity of discharge atomization of hydroelectric station isqualitatively analyzed. It is clear that, no matter it is theory analysis or prototype measurement, allhave their limitations. It is difficult in calculating the influence scope and extent of dischargeatomization even if adopt several methods to solve it. Secondly, the complexity of geologic problem of rock slope is analyzed in detail.The result shows that the Deterministic parsing is deficiency in analyzing suchproblem, and that there is a great deviation compares the explicit value, solution ofabstract mathematic model, with actual value. As an example, the discharge atomization of Longyang hydroelectric station,acting on rock slope, is given. The mechanism of landslide is analyzed withTri-dimension Finite-Element method and Tri-dimension Seepage Field Analysis. Theresult shows that there is much deficiency in conventional method, and that muchindeterminacy factor can’t be got with Deterministic parsing. Combining with Deterministic method, the Fuzzy Synthesis Evaluating model isfound. The influence of Rock Slope stabilization, causing by hydropower stationdischarging atomization, is evaluated with this model. The result shows that only withthis Combining method can the satisfactory evaluating outcome be got. At last, some practice advices is put forward on the basis of the result of FuzzySynthesis Evaluating of the processed Longyangxia Hushan slope. In this paper, the correlation element set, that is a variable space, is adopted. Itmay be biased, but isn’t affecting the reliability of its outcome. Because this set ischangeable with the change of the analysis condition and objective. It is clear that thismethod is very versatile and reliable and can be used in engineering evaluating.更多还原