爆破振动对露天矿边坡影响的模糊测度研究

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英文题名：Fuzzy Measure Research of the Blasting Vibration Effect on Open-pit Slope 作者：周洪文 论文级别：硕士 学科专业名称：采矿工程 中文关键词：露天矿边坡 ; 爆破震动 ; 隶属函数 ; 模糊测度 英文关键词：open-pit slope ; blasting vibration ; membership function ; fuzzy measure 学位年度：2004 导师：林启太 学科代码：081901 学位授予单位：武汉理工大学 论文提交日期：2004-05-01

摘要

本文运用模糊测度理论，研究爆破震动对铜绿山北露天矿边坡稳定性的影响，针对实际边坡问题，建立了具有普遍意义模糊测度理论分析模型。为分析和研究露天矿边坡工程问题提供了新的方法和途径。
     边坡稳定问题受多种内在因素影响，如地质构造、岩体强度、节理裂隙发育状况、岩石的内聚力(C)、内摩擦角(φ)、地下水等，这些客观因素过去一般用某些定量参数指标来反映其大小。但实际上这些参数指标的量值往往难以精确确定，本身具有模糊性的特点。本文运用模糊测度理论和方法对影响边坡稳定的模糊参数进行系统研究，建立了影响边坡稳定性主要因素的特征函数表达式。
     爆破地震效应对露天矿边坡稳定性影响是一个极其明显和复杂的问题。它受到与爆破有关的各种因素的影响，如爆源的位置、一次起爆药量的大小、起爆方式等。爆破震动作为边坡破坏失稳的一个重要外部因素长期以来一直是工程技术人员研究的重要课题，但是长期以来，无论是边坡本身的内在因素和还是爆破震动的外在因素，人们一直沿用定值的方法进行研究，并在定值的安全系数下判定边坡的稳定性。但实际上，无论是影响边坡稳定的内在因素和还是爆破震动的外在因素往往都难以用精确的定值确定，其本身具有模糊性。本文运用模糊测度理论，建立了爆破震动对露天矿边坡稳定性影响的隶属函数。
     根据特征函数和隶属函数建立了边坡稳定性分析的模糊测度模型，求出了边坡失稳模糊测度(即失稳概率)，较好地放映了边坡稳定的客观实际。
In this paper, Using Fuzzy Measures Theory, the blasting vibration effect on the slope stability of Tonglushan north open-pit mine is studied and to the practical slope situation the universal significant analysis model of Fuzzy Measures Theory is established. It offeres the new method and way in order to analyse and study the question on open-pit slope project.
    The slope stability question is influenced by many kinds of inherent factors, for instance geological structure, intensity of rock body, development state of joint and crack, cohesive force (C) of the rock, interior angle of friction (f), groundwater, etc., these objective factors reflect generally their sizes with some quantitative parameter indexes in the past. But in fact their quantity values of the parameter indexes are often difficultly confirmed and they have fuzzy characteristics by theirself. In this paper, using fuzzy measures theory and method, the fuzzy parameters that influence the slope stability are systematically researched and the characteristic function expression formula on the main factors that influence the slope stability is set up.
    Blasting earthquake effect on slope stability of open-pit is an extremely obvious and complicated problem. It is influenced by various kinds of factors related to blasting, such as the position of the blast source, a detonating blasting quantity, detonating way, etc. Blasting shaking as an important external factor on slope destroy is a important subject that engineers and technicians study, but for a long time, no matter of inherent factor of slope unstability and blows up the external factor of blasting shaking, people continue to research using the method of definite value and judge the slope stability under the safety coefficient of definite value. In fact, it is often difficult to fix these influence factors using accurate definite value because they are fuzzy. This paper sets up the membership function
    
    
    of the effect on blasting shaking to open-pit slope stability.
    According to characteristic function and membership function, fuzzy measures model on slope stability analysis is set up. And the fuzzy measure on slope unstability (unstability probability) is calculated. It reflects well the objective reality of slope stability.

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