本文選題：離散元 + 碎裂巖質(zhì)邊坡　； 參考：《金屬礦山》2017年04期

【摘要】：邊坡卸荷松弛特征對邊坡穩(wěn)定性具有重要影響。采用顆粒流法模擬碎裂巖質(zhì)邊坡卸荷全過程,探討卸荷過程中能量、位移的時(shí)空演化規(guī)律�；赑FC模擬和探地雷達(dá)探測提出一種新的卸荷分區(qū)判定方法。研究結(jié)果表明:邊坡卸荷過程能量經(jīng)歷驟變、波動(dòng)、平穩(wěn)3個(gè)過程,外力功大多以應(yīng)變能的形式存儲在巖體中;邊坡平均卸荷深度達(dá)2 m,探地雷達(dá)在邊坡卸荷區(qū)檢測中具有良好的適用性;基于邊坡變形特征和探測結(jié)果,將邊坡分為開挖損傷區(qū)、卸荷影響區(qū)和輕微擾動(dòng)區(qū)。
[Abstract]:The characteristics of slope unloading and relaxation play an important role in slope stability. The whole unloading process of fractured rock slope is simulated by particle flow method, and the space-time evolution law of energy and displacement in unloading process is discussed. Based on PFC simulation and ground penetrating radar detection, a new method for determining unloading zones is proposed. The results show that the energy of the slope unloading process experienced three processes: sudden change, fluctuation and stability. The external force work is mostly stored in the rock mass as strain energy. The average unloading depth of the slope is up to 2 m.The GPR has good applicability in the detection of the unloading area of the slope, and based on the deformation characteristics of the slope and the detection results, the slope is divided into three areas: excavation damage area, unloading affected area and slight disturbance zone.
【作者單位】： 江西省交通科學(xué)研究院;江西省高速公路投資集團(tuán)有限公司;
【基金】：江西省交通運(yùn)輸廳科研項(xiàng)目(編號:2015C0017,2015C0020,2015C0067)
【分類號】：TU45

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7 楊學(xué)堂,哈秋，

本文編號：2052673