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  本文選題：干堆尾礦庫 + 尾細(xì)砂��； 參考：《石家莊鐵道大學(xué)》2014年碩士論文

【摘要】：隨著人民越來越注重尾礦庫的安全性和環(huán)保問題，如何提高尾礦壩體穩(wěn)定性、增加庫容量已成為亟待解決的問題。干堆尾礦庫因其尾礦材料脫水碾壓、庫內(nèi)不存水、無明顯滲流作用等諸多優(yōu)點，逐漸成為各地采用的尾礦庫筑壩方式。同時，干堆尾礦庫可在保證尾礦壩體穩(wěn)定性的前提下，增加庫容量，有效的解決了尾礦庫穩(wěn)定性和環(huán)保兩大問題，不僅降低了下游人民和企業(yè)的生命財產(chǎn)安全遭受損害的風(fēng)險，而且提高了占地利用率，實現(xiàn)了擴(kuò)容的目的。因此，研究干堆尾礦庫壩體穩(wěn)定性及其適用性，并使干堆技術(shù)得到廣泛推廣，是一項有著巨大社會效益的工作。 本文旨在研究干堆尾礦庫壩體穩(wěn)定性，并將分析結(jié)果應(yīng)用于干堆尾礦庫工程實例，實現(xiàn)安全性與庫容量的雙贏。目前，由于我國還沒有頒布針對干堆尾礦庫的設(shè)計規(guī)范，含水率、碾壓程度、堆筑高度、坡度均無規(guī)范可依。在此背景下，本論文進(jìn)行了以下有益的工作： (1)針對不同的礦物類型及礦物成分，，本文對歸納為尾細(xì)砂、尾粉砂、尾粉土三種不同的尾礦材料進(jìn)行各種物理力學(xué)試驗，得出不同含水率、不同相對密度(壓實系數(shù))對應(yīng)下的抗剪強(qiáng)度參數(shù)。 (2)根據(jù)實驗得出的參數(shù)，采用STAB土質(zhì)邊坡穩(wěn)定分析程序，對不同的尾礦材料、對尾礦壩剖面進(jìn)行抗滑穩(wěn)定性分析，并得出不同含水率、密實度對應(yīng)下的抗滑穩(wěn)定安全系數(shù)分布規(guī)律。 (3)在相同尾礦庫背景環(huán)境下，分析堆積高度、堆積坡度和地震烈度對干堆尾礦庫壩體穩(wěn)定性的影響速度。同時采用傳統(tǒng)尾礦庫工程實例，與干堆尾礦庫壩體穩(wěn)定性進(jìn)行對比，分析尾礦庫內(nèi)水對壩體穩(wěn)定性影響程度。 (4)對干堆尾礦庫工程實例的初步設(shè)計方案進(jìn)行了分析并提出了有益建議，可使尾礦庫的有效庫容得到擴(kuò)充，對干堆尾礦庫的設(shè)計具有指導(dǎo)性意義。
[Abstract]:With the people pay more and more attention to the safety and environmental protection of the tailings dam, how to improve the stability of the tailing dam body and increase the reservoir capacity has become an urgent problem to be solved. Because of its advantages such as dehydration and compaction of tailings material, no water in the reservoir and no obvious seepage, the dry pile tailing reservoir has gradually become a kind of dam construction method used in various places. At the same time, on the premise of ensuring the stability of the tailings dam body, the dry pile tailings reservoir can increase the capacity of the tailings dam, effectively solve the two major problems of the stability of the tailings reservoir and environmental protection, and not only reduce the risk of damage to the life and property safety of the downstream people and enterprises, but also reduce the risk of damage to the life and property of the downstream people and enterprises. Moreover, it improves the utilization rate of land occupation and realizes the purpose of capacity expansion. Therefore, it is a work of great social benefit to study the stability and applicability of the dam body of the dry reactor tailings reservoir, and to make the dry reactor technology widely spread. The purpose of this paper is to study the stability of the dam body of the dry reactor tailing reservoir and apply the analysis results to the engineering example of the dry reactor tailings reservoir to realize the win-win situation between the safety and the capacity of the reservoir. At present, there are no specifications for the design of dry pile tailings reservoir in China, such as moisture content, rolling degree, pile height and slope degree. In this context, this paper has carried out the following useful work: 1) aiming at different mineral types and mineral composition, three kinds of tailings materials, including fine sand and silt, have been tested in this paper, and different moisture content has been obtained. Shear strength parameters corresponding to different relative densities (compaction coefficients). 2) according to the parameters obtained from the experiment, the stability of tailings dam profile is analyzed by using STAB soil slope stability analysis program, and the different moisture content is obtained. The distribution law of safety factor of anti-slip stability corresponding to compactness. 3) under the same tailings background environment, the paper analyzes the influence speed of accumulation height, accumulation slope and seismic intensity on the stability of dam body of dry pile tailing reservoir. At the same time, the stability of the dam body is compared with that of the dry pile tailing dam by using the traditional tailing reservoir engineering example, and the influence of the water in the tailing reservoir on the dam stability is analyzed. 4) the preliminary design scheme of the dry pile tailing reservoir is analyzed and some useful suggestions are put forward, which can expand the effective storage capacity of the tailings reservoir and have instructive significance for the design of the dry pile tailing reservoir.
【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;TV223

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