【摘要】：伴隨著市場(chǎng)經(jīng)濟(jì)發(fā)展的步伐加快,我國對(duì)能源的需求也日益增高,使得露天采剝技術(shù)得到廣泛的應(yīng)用,然而在露天礦臺(tái)階爆破作業(yè)時(shí)產(chǎn)生的振動(dòng)對(duì)邊坡穩(wěn)定性具有不可忽視的影響,并且礦山巖體邊坡往往是有內(nèi)部缺陷的、有軟弱夾層的,所以,在爆破振動(dòng)對(duì)邊坡影響研究中,爆破對(duì)軟弱構(gòu)造區(qū)域的影響占有重要地位,對(duì)此類邊坡的穩(wěn)定性評(píng)價(jià)及安全措施的預(yù)防和采取意義重大。本文結(jié)合山西忻州神達(dá)梁家磧煤業(yè)有限公司露天煤礦測(cè)得的爆破數(shù)據(jù),包括聲波測(cè)試數(shù)據(jù)和振動(dòng)測(cè)試數(shù)據(jù),根據(jù)在不同介質(zhì)條件下,聲波速率和振動(dòng)幅度都不同,說明其損傷規(guī)律也不盡相同,通過對(duì)比,得出存在結(jié)構(gòu)弱面的邊坡在爆破振動(dòng)作用下受到的影響及損傷程度要比沒有結(jié)構(gòu)弱面的邊坡大,更容易遭到爆破振動(dòng)作用的破壞,并利用Ansys軟件模擬在四次爆破振動(dòng)動(dòng)荷載作用下對(duì)有結(jié)構(gòu)弱面的巖體邊坡的擾動(dòng)規(guī)律,證明了結(jié)構(gòu)弱面對(duì)巖體邊坡影響規(guī)律的正確性。
[Abstract]:With the quickening pace of the development of market economy, the demand for energy in our country is increasing day by day, which makes the open pit mining and stripping technology widely used. However, the vibration produced by bench blasting in open-pit mine has an important influence on the stability of the slope, and the mine rock slope often has internal defects and weak interlayers. Therefore, in the study of the impact of blasting vibration on the slope, the influence of blasting vibration on the slope stability can not be ignored. Blasting plays an important role in the influence of blasting on the weak structural area. It is of great significance to the evaluation of the stability of this kind of slope and the prevention and adoption of safety measures. Based on the blasting data measured in Shanxi Xinzhou Shenda Liangjia Coal Mine Co., Ltd, including acoustic wave test data and vibration test data, according to the different medium conditions, the velocity and vibration amplitude of sound wave are different. Through the comparison, it is concluded that the slope with weak structure is more affected by blasting vibration and the damage degree is larger than the slope without weak structure, so it is more vulnerable to damage by blasting vibration, and the damage of the slope with weak surface is much higher than that of the slope without the weak surface of the structure, and it is more vulnerable to damage by blasting vibration. Ansys software is used to simulate the disturbance law of rock slope with structure weak plane under the action of four times blasting vibration dynamic load, and the correctness of the influence law of structure weak face on rock mass slope is proved.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU43

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