【摘要】：本文以云南省鹽津縣普洱渡鎮(zhèn)黃桷灣危巖高邊坡工程為研究對象,對該危巖高邊坡工程所處區(qū)域的地理環(huán)境、氣象水文、地形地貌、地層巖性、區(qū)域地質(zhì)構(gòu)造、水文地質(zhì)條件、區(qū)域穩(wěn)定和地震作用等方面進行詳細(xì)的介紹。通過現(xiàn)場調(diào)研發(fā)現(xiàn),該危巖高邊坡的穩(wěn)定性問題主要涉及兩個方面：(1)主斜坡巖體的穩(wěn)定問題(2)主斜坡表面停積的巨型塊石穩(wěn)定性問題。 文章首先對國內(nèi)外巖質(zhì)邊坡穩(wěn)定性研究的發(fā)展歷史和分析方法研究現(xiàn)狀進行了總結(jié),結(jié)合工程實際情況選取了適用于本工程的研究方法和計算軟件。在主斜坡巖體的穩(wěn)定性計算時,選取3個典型地質(zhì)剖面,采用Geo-Studio軟件計算天然自重工況、FLAC2D軟件計算地震動荷載工況；在主斜坡表面停積的巨型塊石穩(wěn)定性計算時,選取了4個典型地質(zhì)剖面,采用的計算軟件為Rockfall軟件。 文中主要得到以下計算成果：(1)在天然自重工況下,主斜坡巖體的安全系數(shù)高,邊坡處于穩(wěn)定狀態(tài),但在邊坡坡表形狀突變處由于應(yīng)力集中的原因,仍有可能發(fā)生局部、小規(guī)模的破壞；(2)在地震動荷載工況下,主斜坡巖體的安全系數(shù)急劇下降,邊坡整體仍處于穩(wěn)定狀態(tài),巖體發(fā)生中-淺部切層破壞的可能性增大；(3)主斜坡上停積的巨型塊石—旦發(fā)生滾動,必將危及到黃桷灣新區(qū)的安全。 黃桷灣危巖高邊坡穩(wěn)定性的研究成果,為工程技術(shù)人員對該邊坡進行合理的工程設(shè)計提供了依據(jù),并對邊坡的治理及環(huán)境恢復(fù)工作具有借鑒意義。
[Abstract]:This paper takes the high slope engineering of Huangjuwan dangerous rock in Puererdu town, Yanjin County, Yunnan Province as the research object, and analyzes the geographical environment, meteorology and hydrology, topography, stratigraphic lithology, regional geological structure and hydrogeological conditions of the area where the dangerous rock high slope project is located. Regional stability and seismic action are introduced in detail. Through field investigation, it is found that the stability of the high slope of the dangerous rock mainly involves two aspects: (1) the stability of the rock mass on the main slope; (2) the stability of the massive rock block on the surface of the main slope. In this paper, the development history and analysis methods of rock slope stability at home and abroad are summarized, and the research methods and calculation software suitable for the project are selected according to the actual situation of the project. In the stability calculation of rock mass on the main slope, three typical geological sections are selected, and the natural deadweight conditions are calculated by Geo-Studio software, the ground motion load conditions are calculated by FLAC2D software, and the stability of massive rock blocks on the surface of the main slope is calculated. Four typical geological sections are selected and the calculation software is Rockfall. The main results are as follows: (1) under the condition of natural gravity, the safety factor of the rock mass on the main slope is high and the slope is in a stable state, but it is still possible to occur locally at the abrupt change of the shape of the side slope due to the stress concentration. (2) under the condition of ground motion load, the safety factor of the main slope rock mass decreases sharply, the whole slope is still in a stable state, and the possibility of the mid-shallow shear layer failure of the rock mass is increased. (3) the rolling of the massive rock block on the main slope will endanger the safety of the new area of Huangjuewan. The results of the research on the stability of the dangerous rock slope in Huangjuewan provide a basis for the engineers to design the slope reasonably, and can be used for reference for the treatment of the slope and the restoration of the environment.
【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TU457

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