本文選題：尾礦庫　切入點：鄧肯-張模型　出處：《石家莊鐵道大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：尾礦庫是一種特殊的水工構(gòu)筑物，是金屬礦山建設(shè)的重要組成部分。其數(shù)量和高度隨著國家對礦產(chǎn)資源的巨大需求而快速增加。我國是世界上多地震國家之一，而地震又是造成尾礦庫潰壩的主要原因之一。因此，深入研究地震力作用下尾礦庫的穩(wěn)定性顯得尤為重要。文中主要進(jìn)行了以下研究工作： (1)通過對Abaqus二次開發(fā)，獲得了尾礦庫壩體靜力穩(wěn)定分析和動力穩(wěn)定分析所需要的UMAT用戶子程序，即鄧肯一張雙曲線E-B模型和等效粘彈性模型的用戶子程序。將剪應(yīng)力對比法作為液化判別方法引入到計算模型中對液化區(qū)進(jìn)行分析，并將沈珠江殘余變形模型引入計算模型對震后壩體的殘余變形進(jìn)行定量分析。 (2)以河北省某新建尾礦庫為例，通過曲面擬合的方法建立與實際地形相接近的三維數(shù)值模型。該模型的地形曲面與實際等高線的走向擬合良好，能較準(zhǔn)確反映地形特征，為數(shù)值計算提供了基礎(chǔ)。應(yīng)用文中所開發(fā)的計算程序，對尾礦庫壩體數(shù)值模型進(jìn)行靜力分析，分析結(jié)果表明，尾礦庫壩體靜力狀態(tài)穩(wěn)定，并得到各單元的圍壓狀態(tài)，為動力反應(yīng)提供基礎(chǔ)。選取2條實測地震波和1條人工波對壩體進(jìn)行動力分析，得到了三種地震波作用下壩體的動剪應(yīng)力和動剪應(yīng)變。在此基礎(chǔ)上對壩體進(jìn)行液化分析，得到了三種地震波作用下尾礦庫壩體液化區(qū)在三維空間的分布范圍與液化深度，并分析了震后壩體的穩(wěn)定性；對壩體進(jìn)行殘余變形分析，得到了三種地震作用下尾礦庫的殘余變形分布規(guī)律，并驗證了震后的干灘長度和安全超高是否滿足規(guī)范要求。 由以上計算分析可得：三種地震波計算得到的液化區(qū)、殘余變形分布規(guī)律相似。計算結(jié)果沒有明顯的離散性，表明文中開發(fā)的程序穩(wěn)定可行，為類似尾礦庫的動力穩(wěn)定分析提供參考。
[Abstract]:Tailing reservoir is a special hydraulic structure and an important part of metal mine construction. Its quantity and height increase rapidly with the great demand for mineral resources. China is one of the countries with many earthquakes in the world. Earthquake is one of the main causes of tailing dam failure. Therefore, it is very important to study the stability of tailing reservoir under seismic force. 1) through the secondary development of Abaqus, the UMAT user subroutine for static stability analysis and dynamic stability analysis of tailing dam body is obtained. This is the user subroutine of a hyperbolic E-B model and an equivalent viscoelastic model. The shear stress contrast method is introduced into the calculation model to analyze the liquefaction zone. Shen Zhujiang's residual deformation model is introduced into the calculation model to quantitatively analyze the residual deformation of the dam body after the earthquake. Taking a newly built tailing reservoir in Hebei province as an example, a 3D numerical model is established by curved surface fitting method, which is close to the actual terrain. The terrain surface of the model fits well with the actual contour, and it can accurately reflect the topographic features. The results show that the static state of the tailing dam body is stable, and the confining pressure state of each unit is obtained. The dynamic shear stress and shear strain of the dam body under the action of three kinds of seismic waves are obtained, and the liquefaction analysis of the dam body is carried out on the basis of selecting two measured seismic waves and one artificial wave to carry out the dynamic analysis of the dam body, and the dynamic shear stress and the dynamic shear strain of the dam body under the action of three kinds of seismic waves are obtained. The distribution range and liquefaction depth of the liquefaction area of the tailing dam body under the action of three kinds of seismic waves are obtained, and the stability of the dam body after the earthquake is analyzed, and the residual deformation of the dam body is analyzed. The residual deformation distribution law of tailings reservoir under three kinds of earthquakes is obtained, and it is verified that the dry beach length and the safety super-high after the earthquake can meet the requirements of the code. From the above calculation and analysis, it can be concluded that the distribution law of residual deformation is similar to that of the liquefaction zone calculated by three kinds of seismic waves. The result of calculation has no obvious discreteness, which shows that the program developed in this paper is stable and feasible. It provides a reference for dynamic stability analysis of similar tailing ponds.
【學(xué)位授予單位】：石家莊鐵道大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TV649;TV312

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 石兆吉,張榮祥,顧寶和;砂土液化判別和評價綜合方法研究[J];地震工程與工程振動;1997年01期

2 佘躍心,劉漢龍,高玉峰;場地液化勢評價概率模型[J];工程勘察;2002年05期

3 周健;尾礦壩在地震作用下的三維兩相有效應(yīng)力動力分析[J];工程抗震;1995年01期

4 王余慶，王治平，，辛鴻博，李志林;中國尾礦壩地震安全度（1）──大石河尾礦壩1976年唐山大地震震害及有關(guān)強(qiáng)震觀測記錄[J];工業(yè)建筑;1994年07期

5 辛鴻博，王余慶;中國尾礦壩地震安全度（6）──用SPT評價大石河尾礦壩的沉積特征[J];工業(yè)建筑;1994年11期

6 李萬升，劉靜平，王治平;中國尾礦壩地震安全度（7）──大石河尾礦壩原位密度的同位素測試方法[J];工業(yè)建筑;1994年12期

7 李萬升，高建生，王治平;中國尾礦壩地震安全度（8）─—大石河尾礦砂的力學(xué)特性試驗研究[J];工業(yè)建筑;1995年01期

8 辛鴻博，王余慶;中國尾礦壩地震安全度（9）──大石河尾礦粘性土的動力變形和強(qiáng)度特征[J];工業(yè)建筑;1995年02期

9 王余慶，辛鴻博;中國尾礦壩地震安全度（10）──用動單剪儀研究大石河尾礦砂的動特性[J];工業(yè)建筑;1995年03期

10 王余慶，辛鴻博，李志林;中國尾礦壩地震安全度（11）──大石河尾礦砂的穩(wěn)態(tài)變形特性[J];工業(yè)建筑;1995年04期

本文編號：1606945