云南盐津普洱渡高边坡稳定问题研究
发布时间：2018-10-18 07:05
【摘要】：本文以云南省盐津县普洱渡镇黄桷湾危岩高边坡工程为研究对象,对该危岩高边坡工程所处区域的地理环境、气象水文、地形地貌、地层岩性、区域地质构造、水文地质条件、区域稳定和地震作用等方面进行详细的介绍。通过现场调研发现,该危岩高边坡的稳定性问题主要涉及两个方面：(1)主斜坡岩体的稳定问题(2)主斜坡表面停积的巨型块石稳定性问题。 文章首先对国内外岩质边坡稳定性研究的发展历史和分析方法研究现状进行了总结,结合工程实际情况选取了适用于本工程的研究方法和计算软件。在主斜坡岩体的稳定性计算时,选取3个典型地质剖面,采用Geo-Studio软件计算天然自重工况、FLAC2D软件计算地震动荷载工况；在主斜坡表面停积的巨型块石稳定性计算时,选取了4个典型地质剖面,采用的计算软件为Rockfall软件。 文中主要得到以下计算成果：(1)在天然自重工况下,主斜坡岩体的安全系数高,边坡处于稳定状态,但在边坡坡表形状突变处由于应力集中的原因,仍有可能发生局部、小规模的破坏；(2)在地震动荷载工况下,主斜坡岩体的安全系数急剧下降,边坡整体仍处于稳定状态,岩体发生中-浅部切层破坏的可能性增大；(3)主斜坡上停积的巨型块石—旦发生滚动,必将危及到黄桷湾新区的安全。 黄桷湾危岩高边坡稳定性的研究成果,为工程技术人员对该边坡进行合理的工程设计提供了依据,并对边坡的治理及环境恢复工作具有借鉴意义。
[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.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU457
本文编号：2278366
[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.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU457
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