龍門(mén)山斷裂帶斷層巖在水熱條件下的摩擦滑動(dòng)特性實(shí)驗(yàn)研究
發(fā)布時(shí)間:2018-01-22 05:18
本文關(guān)鍵詞: 龍門(mén)山斷裂帶 自然斷層泥 斷層糜棱巖 層狀硅酸鹽礦物 有機(jī)質(zhì) 摩擦強(qiáng)度 摩擦滑動(dòng)穩(wěn)定性 速率和狀態(tài)摩擦本構(gòu)關(guān)系 出處:《國(guó)際地震動(dòng)態(tài)》2014年08期 論文類(lèi)型:期刊論文
【摘要】:正為了探索斷層巖石在斷層帶不同溫度和壓力條件下其摩擦強(qiáng)度和摩擦滑動(dòng)穩(wěn)定性對(duì)于斷層活動(dòng)性的影響,我們采集了龍門(mén)山斷裂帶地震發(fā)生區(qū)段出露的自然斷層泥樣品和后山斷裂帶韌性剪切帶中的富含層狀硅酸鹽礦物的糜棱巖樣品進(jìn)行了水熱條件下的摩擦滑動(dòng)實(shí)驗(yàn)研究。我們根據(jù)自然斷層泥樣品的XRD分析結(jié)果選取了5種具有不同礦物組合及含量的自然斷層泥樣品并在50MPa的初始圍壓和25℃~150℃的溫度條件下進(jìn)行了摩擦滑動(dòng)實(shí)驗(yàn)。在
[Abstract]:In order to explore the influence of friction strength and sliding stability of fault rock on fault activity under different temperature and pressure in fault zone. We have collected samples of natural fault gouge exposed in the earthquake occurrence section of Longmenshan fault zone and mylonite samples rich in layered silicate minerals in the ductile shear zone of Houshan fault zone. Friction sliding experiments have been carried out under hydrothermal conditions. According to the XRD analysis results of natural fault gouge samples, five kinds of natural fault gouge samples with different mineral assemblages and contents were selected at the initial confining pressure of 50MPa and the temperature of 150 鈩,
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