本文選題：地質(zhì)力學 + 廣西盆地　； 參考：《巖石力學與工程學報》2017年S1期

【摘要】：貴廣高鐵廣西段位于廣西盆地東北部,是連接"一帶一路"的高速通道,為查明研究區(qū)的地應力分布特征,為隧道的設計提供基礎資料,在廣西5個不同地區(qū)開展了8個鉆孔的水壓致裂地應力測量工作,結果表明:研究區(qū)內(nèi)最大水平主應力S_H方向主要表現(xiàn)為NNW-NWW,這與華南區(qū)域應力場相一致;S_H和最小水平主應力S_h的梯度小于全國平均地應力梯度。在深度小于300 m的范圍內(nèi),三向主應力相對大小以S_HS_hS_v為主,在這種應力狀態(tài)下有利于逆斷層的活動;在深度大于300 m的范圍內(nèi),三向主應力相對大小以S_HS_vS_h為主,在這種應力狀態(tài)下有利于走滑斷層的活動,這種應力狀態(tài)與研究區(qū)以逆斷兼走滑的斷層結果較為一致。研究區(qū)側壓力系數(shù)的值和μ_m值(最大剪應力與平均主應之比)均表明測區(qū)內(nèi)斷層處于穩(wěn)定狀態(tài),這與研究區(qū)屬于構造穩(wěn)定區(qū)的研究結果相一致。
[Abstract]:The Guangxi section of Gui-Guang high-speed railway is located in the northeast of Guangxi Basin. It is a high-speed passage connecting "Belt and Road". It can provide basic data for the design of tunnels and to find out the characteristics of in-situ stress distribution in the study area. In five different regions of Guangxi, the in-situ stress measurement of hydraulic fracturing of 8 boreholes has been carried out. The results show that the maximum horizontal principal stress Sh direction is mainly NNW-NWW-NNW, which is consistent with the regional stress field in South China. The gradient of SSP H and the minimum horizontal principal stress Sh is smaller than that of the national average in-situ stress gradient. In the range of depth less than 300m, the relative magnitude of the three-way principal stress is S_HS_hS_v, which is favorable to the activity of the reverse fault in this stress state, and the relative magnitude of the three-way principal stress is S_HS_vS_h when the depth is larger than 300m. This state of stress is favorable to the activity of strike-slip faults, which is consistent with the results of the faults with reverse fault and strike-slip in the study area. The values of the lateral pressure coefficient and 渭 M (the ratio of the maximum shear stress to the mean principal response) indicate that the faults in the measured area are in a stable state, which is consistent with the results of the study on the structural stability in the study area.
【作者單位】： 中國地震局地殼應力研究所;中國地震局地殼動力學重點實驗室;中國科學技術大學地球和空間科學學院;中國地質(zhì)科學院水文地質(zhì)環(huán)境地質(zhì)研究所;中國建筑科學研究院;
【基金】：國家自然科學基金資助項目(41404036,41574081) 中國地震局地殼應力研究所中央級公益性科研院所基本科研業(yè)務專項資助項目(ZDJ2016 10)~~
【分類號】：P642

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1 陳建國;馬興國;;華北地區(qū)應力狀態(tài)與地震關系的研究[J];華北地震科學;1993年03期

2 劉瑞,呂古賢;影響地下應力狀態(tài)的構造作用[J];地球?qū)W報;2002年02期

3 羅雨田;井下爆破技術及其在鄂爾多斯盆地應力狀態(tài)研究中的應用[J];成都理工學院學報;1996年03期

4 華，

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