本文選題：北山 + 結(jié)構(gòu)面�。� 參考：《南京大學》2013年碩士論文

【摘要】：花崗巖巖體結(jié)構(gòu)面調(diào)查、分析、建模是研究花崗巖工程巖體的重要方面,在實際情況中,巖體中結(jié)構(gòu)面的空間分布是變化的,這種變化可能是均勻的或者不均勻的、隨機的或者規(guī)律性的,表現(xiàn)為從一個工程地質(zhì)單元到另一個單元的結(jié)構(gòu)面展布特征、地質(zhì)力學或者水文地質(zhì)特征是相同或者不同的,因此對結(jié)構(gòu)面空間分布形態(tài)的把握不僅是穩(wěn)定性、滲透性研究的基礎(chǔ),更對工程建設(shè)具有很強的實際意義。 本文圍繞甘肅北山花崗巖結(jié)構(gòu)面的空間分布特征,工作集中于北山花崗巖結(jié)構(gòu)面空間分布特征的數(shù)據(jù)量測、數(shù)據(jù)存儲、統(tǒng)計分析和建模研究等工作,分析總結(jié)了研究區(qū)域結(jié)構(gòu)面空間分布的總體形態(tài)及變異特征并將其應用到巖體質(zhì)量評價和三維結(jié)構(gòu)面建模工作中,其研究意義在于從整體到細部闡明花崗巖結(jié)構(gòu)面的空間分布特征并為后續(xù)的巖體穩(wěn)定性、滲透性等研究打下基礎(chǔ)。本文取得的研究成果具體如下： 1、首先從結(jié)構(gòu)面數(shù)據(jù)的獲取途徑進行了創(chuàng)新,采用GPS-RTK技術(shù)改進了結(jié)構(gòu)面跡長測量方法,大大提高了結(jié)構(gòu)面數(shù)據(jù)獲取速率；并將結(jié)構(gòu)面數(shù)據(jù)存儲在GIS數(shù)據(jù)平臺上,為數(shù)據(jù)管理以及后續(xù)數(shù)據(jù)的分析處理提供便利基礎(chǔ)； 2、利用GIS的toolbox工具對代表區(qū)域結(jié)構(gòu)面數(shù)據(jù)進行了空間分布特征分析,具體是從分形特征和地質(zhì)統(tǒng)計學特征兩個方面入手：①北山地區(qū)花崗巖結(jié)構(gòu)面在一定程度上是具有分形特征的,并且與其面密度值具有很強的關(guān)聯(lián)性,這對各個級別結(jié)構(gòu)面空間分布的整體評價乃至巖體質(zhì)量的評價都具有重要的借鑒意義；②利用地質(zhì)統(tǒng)計學理論研究發(fā)現(xiàn),研究區(qū)域的花崗巖巖體結(jié)構(gòu)面的空間分布具有很明顯的各向異性,其中各向異性主軸特征明顯； 3、通過對各向異性主軸分組分析其密度值變異函數(shù)特征發(fā)現(xiàn),不同分組在空間分布上的變異性程度并不相同,即不同結(jié)構(gòu)面分組的空間分布特征并不相同,除第1分組以外的其他結(jié)構(gòu)面比較接近于均勻分布,而第1分組與整體結(jié)構(gòu)面的空間分布變化特征最為相似,具有很明顯的“空穴效應”特征； 4、針對結(jié)構(gòu)面空間分布的“空穴效應”特征在建模中進行特殊考慮,即對第1分組結(jié)構(gòu)面應該在考慮其空間分布的周期性變化特征基礎(chǔ)上進行建模,并利用Matlab軟件編制了相應程序,對第1分組結(jié)構(gòu)面進行了二維模擬,并為三維結(jié)構(gòu)面網(wǎng)絡建模提出建議和方法。
[Abstract]:The investigation, analysis and modeling of the structural plane of granite are important aspects of the study of granite engineering rock mass. In the actual situation, the spatial distribution of the structural surface in the rock mass is changed, and this change may be uniform or uneven, random or regular, and is shown as a structural plane from an engineering geological unit to another. The characteristics of distribution, geomechanics or hydrogeological characteristics are the same or different, so the grasp of the spatial distribution pattern of the structure surface is not only the foundation of stability, permeability research, but also of great practical significance to the construction of the engineering.
This paper concentrates on the data measurement, data storage, statistical analysis and Modeling Research on the spatial distribution characteristics of the Beishan granite structural surface, focusing on the spatial distribution characteristics of the granite structural surface in the Beishan Mountain of Gansu. This paper analyzes and summarizes the total shape and variation characteristics of the spatial distribution of the regional structure surface and applies it to the quality evaluation of the rock mass. In the work of pricing and three-dimensional structural surface modeling, the research significance lies in clarifying the spatial distribution characteristics of the granite structural surface from the whole to the detail, and laying the foundation for the subsequent research on the stability and permeability of the rock mass.
1, firstly, the method of obtaining the structure surface data is innovated, and the GPS-RTK technology is used to improve the measurement method of structural surface length, which greatly improves the data acquisition rate of the structure surface, and stores the structure surface data on the GIS data platform, which provides a convenient basis for data management and analysis of subsequent data.
2, using the toolbox tool of GIS to analyze the spatial distribution characteristics of the representative regional structural surface data, which is from the fractal characteristics and the geological statistical characteristics of two aspects: (1) the granite structural surface in the north mountain area has some fractal characteristics, and has a strong correlation with its surface density value. The overall evaluation of the spatial distribution of the level structure and the evaluation of the mass of rock mass have important reference significance.
3, through the analysis of the density variation function of the anisotropic spindle, it is found that the variability of different groups in spatial distribution is different, that is, the spatial distribution characteristics of different structural planes are different, and the other structures except the first groups are close to the uniform distribution, while the first groups and the whole structure face are empty. The characteristics of the distribution change are the most similar, and have obvious "hole effect" characteristics.
4, in view of the "hole effect" characteristic of the spatial distribution of the structural plane, the special consideration is made in the modeling. That is, the first packet structure surface should be modeled on the basis of the periodic variation characteristics of its spatial distribution, and the corresponding program is compiled with the Matlab software. The two-dimensional simulation of the first block structure surface is carried out, and the three-dimensional structure surface network is used. The method and suggestion for the modeling of the collaterals are proposed.
【學位授予單位】：南京大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：P208;P588.121

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