【摘要】：隨著我國基礎(chǔ)建設(shè)的飛速發(fā)展,高速公路、房屋建筑、礦產(chǎn)開發(fā)等工程建設(shè)中出現(xiàn)的人工邊坡越來越多,由此造成的邊坡災(zāi)害也日益增多,因此,如何更加高效、合理的對邊坡進(jìn)行加固治理具有重要的理論實(shí)踐意義。預(yù)應(yīng)力錨索框架梁作為一種新興的邊坡加固技術(shù),已在工程實(shí)踐中被大量應(yīng)用推廣,然而其實(shí)際應(yīng)用超前于理論研究,在生產(chǎn)實(shí)踐中仍存在不少問題,因此對該技術(shù)的理論研究具有十分重要的意義。本文以黃陵一號礦四號風(fēng)井邊坡為研究對象,采用傳統(tǒng)分析和數(shù)值模擬兩種方法,對邊坡進(jìn)行了穩(wěn)定性計算評價,通過模糊綜合評判得出最優(yōu)加固方案,并在有限元軟件中對其加固效果進(jìn)行模擬預(yù)測,主要得到以下結(jié)論:(1)采用極限平衡法與有限元強(qiáng)度折減法,分別計算黃陵一號礦四號風(fēng)井邊坡穩(wěn)定性,得出如下評價:在天然工況邊坡處于欠穩(wěn)定狀態(tài),暴雨工況處于失穩(wěn)狀態(tài),該邊坡需加固治理。(2)比較當(dāng)前邊坡加固各種措施的優(yōu)缺點(diǎn)及適用條件,運(yùn)用模糊數(shù)學(xué)多目標(biāo)模糊決策法優(yōu)選出黃陵一號礦四號風(fēng)井邊坡加固最合理方案:預(yù)應(yīng)力錨索框架梁加固措施。(3)在有限元軟件GTS NX中對加固設(shè)計方案進(jìn)行建模,模擬得出預(yù)應(yīng)力錨索框架梁加固后邊坡應(yīng)力。應(yīng)變及塑性區(qū)分布云圖,計算得出天然工況與暴雨工況下黃陵一號礦四號風(fēng)井邊坡穩(wěn)定性系數(shù)分別為1.382、1.165,達(dá)到邊坡等級設(shè)計安全系數(shù),驗(yàn)證了加固方案合理。
[Abstract]:With the rapid development of our country's infrastructure, more and more artificial slopes appear in the construction of highway, house building, mineral development and other projects, and the resulting slope disasters are also increasing day by day. Therefore, how to be more efficient, It is of great theoretical and practical significance to reinforce and treat the slope reasonably. As a new slope reinforcement technology, prestressed anchor cable frame beam has been widely used in engineering practice. However, its practical application is ahead of theoretical research, and there are still many problems in production practice. Therefore, the theoretical study of this technology is of great significance. In this paper, the slope of No. 4 wind shaft in Huangling No. 1 Mine is taken as the research object. The stability of the slope is calculated and evaluated by traditional analysis and numerical simulation, and the optimal reinforcement scheme is obtained by fuzzy comprehensive evaluation. The results are as follows: (1) the slope stability of No. 4 wind shaft in Huangling No. 1 Mine is calculated by using limit equilibrium method and finite element strength reduction method, respectively. The evaluation results are as follows: the slope is in an unstable state under natural conditions, and the torrential rain condition is in a state of instability. (2) compare the advantages and disadvantages and applicable conditions of various measures of slope reinforcement at present. By using fuzzy mathematics multi-objective fuzzy decision method, the most reasonable scheme for slope reinforcement of No. 4 wind shaft in Huangling No. 1 Mine is selected: reinforcement measures of prestressed anchor cable frame beam. (3) the reinforcement design scheme is modeled in finite element software GTS NX. The slope stress after reinforcement with prestressed anchor cable frame beam is obtained by simulation. According to the distribution of strain and plastic area, the slope stability coefficient of No. 4 wind well in Huangling No. 1 Mine under natural and rainstorm conditions is 1.382 ~ 1.165, respectively. The safety factor of slope grade design is reached, and the reinforcement scheme is proved to be reasonable.
【學(xué)位授予單位】：西安科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TD824.7

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