山房山危岩体稳定性分析、滚石运动特征及防治建议研究
发布时间：2019-06-05 03:53
【摘要】：危岩体崩塌是一种严重的全球性的山地地质灾害问题。危岩体崩塌具有广泛性、快速性、隐蔽性、强致灾破坏性等基本特性。随着人类生存空间的不断扩展和工程建设的不断扩张，使落石崩塌灾害呈现出日趋严峻的趋势，对人类生命财产安全造成的威胁也越来越严重。因此正确、及时地对危岩体的形成因由、影响因素和发展条件、危岩体分类及变形失稳模式、危岩体的稳定性分析计算、崩塌落石的运动特征、崩塌落石工程防治措施进行研究，具有较高的学术价值和工程实践指导意义。 本论文以韩国济州岛西归浦市山房山东南侧山体边坡危岩体为研究对象，以山房山东南侧山下环岛8号公路沿线(长度约700米的区间)为研究区域，在以下几个方面进行了系统深入的研究： (1)通过大量的现场调查和对前期资料的整理分析，认识研究区的地形地貌、地层岩性、地质构造、水文地质条件、气候特征及植被特征等，了解研究区所处的特定工程地质环境条件，找出影响研究区产生危岩崩塌的主要影响因子，为后续的研究工作提供基础的研究信息。 (2)使用现场勘查与三维激光扫描技术相结合的调查手段，统计山房山危岩体的分布范围、大小、数量、形态特征等。由于存在部分危岩体处在高陡边坡甚至是悬崖之上，人工勘察困难，三维激光扫描仪对危岩体分布范围进行三维激光扫描，可获得危岩体分布的空间三维数据，如危岩体的位置、高程、分布范围等，及一些主要危岩块体相应结构面特征，对山房山危岩体进行了详细的统计研究。对统计的危岩体的形成因素和发育特征进行分析，详细掌握了危岩体发育影响因素和变形失稳模式并对其分类。 (3)对山房山危岩体的主要岩体结构面进行了统计，绘制了施密特等密度线图，并对三个研究区间ZONE1、ZONE2、ZONE3边坡岩体采用赤平投影法分析其稳定性。明确危岩体的物理力学参数、结构面特征和边界条件等，对重点危岩体运用离散元分析软件UDEC进行数值模拟，分析其在降雨条件下的稳定性。通过对危岩体在裂隙水作用下的影响模拟，说明在持续降雨或暴雨条件下，危岩体中裂隙水不断渗透，使得主控结构面扩张，危岩稳定性降低发生位移，进而会导致落石灾害发生。对于危岩体稳定性的分析与模拟，为以后进行对于危岩体监测及预警预报提供参考依据。 (4)运用Rockfall数值分析软件，建立研究区内的崩塌落石的运动模型，，模拟落石运动轨迹，滑落距离、冲击能量等，可确定危岩体的最远滚落位置，危害范围和到达公路时的冲击能量，为后续的防护措施提供依据。 (5)对危岩体的各类防护体系：主动防护体系、被动防护体系和主动-被动联合防护体系进行阐述，提出针对山房山危岩体相应的经济有效的防护治理建议，如修筑公路防护落石棚、采用SNS柔性防护体系等。
[Abstract]:The collapse of dangerous rock mass is a serious global mountain geological disaster problem. The collapse of dangerous rock mass has the basic characteristics of universality, rapidity, concealment, strong disaster and destruction. With the continuous expansion of human living space and the continuous expansion of engineering construction, the disaster of falling stone is becoming more and more serious, and the threat to the safety of human life and property is becoming more and more serious. Therefore, it is correct and timely to analyze the cause of formation, influencing factors and development conditions of dangerous rock mass, classification and deformation instability mode of dangerous rock mass, stability analysis and calculation of dangerous rock mass, movement characteristics of collapse and falling rock. The research on the prevention and control measures of collapse and rock caving project has high academic value and engineering practice guiding significance. In this paper, the dangerous rock mass on the south side of Shandong mountain slope in Xiguipu City, Jizhou Island, South Korea, is taken as the research object, and the dangerous rock mass along the Shanxia Ring Island Highway 8 in the south side of Shanfang, Shandong Province (about 700 meters in length) is taken as the research area. A systematic and in-depth study has been carried out in the following aspects: (1) through a large number of field investigations and the collation and analysis of the previous data, the topography and geomorphology, strata lithology, geological structure and hydrogeological conditions of the study area have been understood. Climate characteristics and vegetation characteristics, understand the specific engineering geological environment conditions in the study area, find out the main influencing factors that affect the dangerous rock collapse in the study area, and provide basic research information for the follow-up research work. (2) the distribution range, size, quantity and morphological characteristics of Shanfangshan dangerous rock mass are counted by means of field investigation and three-dimensional laser scanning technology. Because some dangerous rock masses are located on high and steep slopes or even cliffs, it is difficult to investigate manually. Three-dimensional laser scanning of dangerous rock mass distribution range can be carried out by three-dimensional laser scanner, and the spatial three-dimensional data of dangerous rock mass distribution can be obtained. For example, the position, elevation and distribution range of dangerous rock mass, as well as the corresponding structural plane characteristics of some main dangerous rock blocks, the dangerous rock mass in Shanfangshan is statistically studied in detail. The forming factors and development characteristics of dangerous rock mass are analyzed, and the influencing factors and deformation instability model of dangerous rock mass are mastered in detail and classified. (3) the main rock mass structural planes of Shanfangshan dangerous rock mass are counted, the Schmitt isodensity diagram is drawn, and the stability of ZONE1,ZONE2,ZONE3 slope rock mass in three research areas is analyzed by red plane projection method. The physical and mechanical parameters, structural plane characteristics and boundary conditions of dangerous rock mass are clarified, and the numerical simulation of key dangerous rock mass is carried out by using discrete element analysis software UDEC, and its stability under rainfall condition is analyzed. Through the simulation of the influence of dangerous rock mass under the action of fracture water, it is shown that under the condition of continuous rainfall or rainstorm, the fracture water in dangerous rock mass permeates continuously, which makes the main control structure plane expand and the stability of dangerous rock decreases to occur displacement. In turn, it will lead to the occurrence of rock falling disaster. The analysis and simulation of the stability of dangerous rock mass provides a reference for the monitoring and early warning prediction of dangerous rock mass in the future. (4) by using Rockfall numerical analysis software, the motion model of caving rock in the study area is established, and the farthest rolling position of dangerous rock mass can be determined by simulating the trajectory of falling rock, sliding distance, impact energy and so on. The damage range and the impact energy when arriving on the highway provide the basis for the follow-up protective measures. (5) all kinds of protection systems of dangerous rock mass, such as active protection system, passive protection system and active-passive joint protection system, are described, and the corresponding economic and effective protection and treatment suggestions for dangerous rock mass in Shanfangshan are put forward. Such as the construction of highway protection stone shed, the use of SNS flexible protection system and so on.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P642.21
本文编号：2493234
[Abstract]:The collapse of dangerous rock mass is a serious global mountain geological disaster problem. The collapse of dangerous rock mass has the basic characteristics of universality, rapidity, concealment, strong disaster and destruction. With the continuous expansion of human living space and the continuous expansion of engineering construction, the disaster of falling stone is becoming more and more serious, and the threat to the safety of human life and property is becoming more and more serious. Therefore, it is correct and timely to analyze the cause of formation, influencing factors and development conditions of dangerous rock mass, classification and deformation instability mode of dangerous rock mass, stability analysis and calculation of dangerous rock mass, movement characteristics of collapse and falling rock. The research on the prevention and control measures of collapse and rock caving project has high academic value and engineering practice guiding significance. In this paper, the dangerous rock mass on the south side of Shandong mountain slope in Xiguipu City, Jizhou Island, South Korea, is taken as the research object, and the dangerous rock mass along the Shanxia Ring Island Highway 8 in the south side of Shanfang, Shandong Province (about 700 meters in length) is taken as the research area. A systematic and in-depth study has been carried out in the following aspects: (1) through a large number of field investigations and the collation and analysis of the previous data, the topography and geomorphology, strata lithology, geological structure and hydrogeological conditions of the study area have been understood. Climate characteristics and vegetation characteristics, understand the specific engineering geological environment conditions in the study area, find out the main influencing factors that affect the dangerous rock collapse in the study area, and provide basic research information for the follow-up research work. (2) the distribution range, size, quantity and morphological characteristics of Shanfangshan dangerous rock mass are counted by means of field investigation and three-dimensional laser scanning technology. Because some dangerous rock masses are located on high and steep slopes or even cliffs, it is difficult to investigate manually. Three-dimensional laser scanning of dangerous rock mass distribution range can be carried out by three-dimensional laser scanner, and the spatial three-dimensional data of dangerous rock mass distribution can be obtained. For example, the position, elevation and distribution range of dangerous rock mass, as well as the corresponding structural plane characteristics of some main dangerous rock blocks, the dangerous rock mass in Shanfangshan is statistically studied in detail. The forming factors and development characteristics of dangerous rock mass are analyzed, and the influencing factors and deformation instability model of dangerous rock mass are mastered in detail and classified. (3) the main rock mass structural planes of Shanfangshan dangerous rock mass are counted, the Schmitt isodensity diagram is drawn, and the stability of ZONE1,ZONE2,ZONE3 slope rock mass in three research areas is analyzed by red plane projection method. The physical and mechanical parameters, structural plane characteristics and boundary conditions of dangerous rock mass are clarified, and the numerical simulation of key dangerous rock mass is carried out by using discrete element analysis software UDEC, and its stability under rainfall condition is analyzed. Through the simulation of the influence of dangerous rock mass under the action of fracture water, it is shown that under the condition of continuous rainfall or rainstorm, the fracture water in dangerous rock mass permeates continuously, which makes the main control structure plane expand and the stability of dangerous rock decreases to occur displacement. In turn, it will lead to the occurrence of rock falling disaster. The analysis and simulation of the stability of dangerous rock mass provides a reference for the monitoring and early warning prediction of dangerous rock mass in the future. (4) by using Rockfall numerical analysis software, the motion model of caving rock in the study area is established, and the farthest rolling position of dangerous rock mass can be determined by simulating the trajectory of falling rock, sliding distance, impact energy and so on. The damage range and the impact energy when arriving on the highway provide the basis for the follow-up protective measures. (5) all kinds of protection systems of dangerous rock mass, such as active protection system, passive protection system and active-passive joint protection system, are described, and the corresponding economic and effective protection and treatment suggestions for dangerous rock mass in Shanfangshan are put forward. Such as the construction of highway protection stone shed, the use of SNS flexible protection system and so on.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P642.21
【参考文献】
相关期刊论文 前10条
1 陈洪凯,欧阳仲春,廖世荣;三峡库区危岩综合治理技术及应用[J];地下空间;2002年02期
2 董好刚;彭轩明;陈州丰;刘广宁;霍志涛;;缓倾层状高边坡典型破坏模式及宏观判据研究[J];长江科学院院报;2009年08期
3 陈洪凯,王蓉,唐红梅;危岩研究现状及趋势综述[J];重庆交通学院学报;2003年03期
4 吴文雪,刘耕;三峡库区危岩稳定性分析[J];重庆交通学院学报;2003年S1期
5 唐红梅,王昌贤,陈洪凯,叶四桥;三峡库区陡崖形成及长期稳定性初步研究——以万州区太白岩为例[J];重庆交通学院学报;2005年06期
6 陈洪凯;;三峡库区危岩链式规律的地貌学解译[J];重庆交通大学学报(自然科学版);2008年01期
7 陈洪凯;唐红梅;;三峡库区公路缓倾角岩层边坡崩塌机理及警报系统[J];重庆师范大学学报(自然科学版);2009年03期
8 晏同珍;滑坡预测预报的基础及我国主要滑坡岩组特征的确定[J];地球科学;1985年01期
9 陈明东;王兰生;;链子崖危岩体变形破坏机制及整治对策[J];地质灾害与环境保护;1991年01期
10 罗永忠,徐志文,祝世强;达县城区立石子危岩形成机制分析及稳定性评价[J];地质灾害与环境保护;2004年02期
本文编号：2493234
本文链接：https://www.wllwen.com/kejilunwen/diqiudizhi/2493234.html
