本文關(guān)鍵詞： 水壓致裂法 實(shí)測(cè)應(yīng)力 構(gòu)造應(yīng)力 回歸反演 最大水平主應(yīng)力　出處：《地下空間與工程學(xué)報(bào)》2017年02期 　論文類型：期刊論文

【摘要】：巖體初始地應(yīng)力場(chǎng)是研究地下洞室圍巖穩(wěn)定狀況和隧洞選線的重要依據(jù)。應(yīng)用水壓致裂法對(duì)秦嶺北緣某深埋引水隧洞應(yīng)力進(jìn)行測(cè)定,結(jié)果顯示隧洞圍巖應(yīng)力等級(jí)屬于中低~高應(yīng)力水平,應(yīng)力量值呈σ_Hσ_hσ_z特征,最大水平主應(yīng)力方向?yàn)榻麼E向,與區(qū)域構(gòu)造主壓應(yīng)力方位接近一致�；趯�(shí)測(cè)數(shù)據(jù),對(duì)工程區(qū)應(yīng)力場(chǎng)進(jìn)行回歸反演,并結(jié)合區(qū)域構(gòu)造應(yīng)力對(duì)隧道沿線的深埋和淺埋段應(yīng)力場(chǎng)分布規(guī)律進(jìn)行了研究,以期為引水工程的設(shè)計(jì)和施工提供參考。
[Abstract]:The initial ground stress field of rock mass is an important basis for studying the stability of surrounding rock mass of underground cavern and the selection of tunnel route. The stress of a deep water diversion tunnel in the northern margin of Qinling Mountains is measured by hydraulic fracturing method. The results show that the stress grade of surrounding rock of tunnel belongs to medium or high stress level, the stress value is 蟽 H 蟽 h 蟽 z, the direction of maximum horizontal principal stress is near NE direction, which is close to the direction of regional tectonic principal compressive stress. Based on the measured data, the maximum horizontal principal stress direction is close to that of regional tectonic principal compressive stress. The regression inversion of the stress field in the engineering area is carried out, and the distribution of the stress field in the deep and shallow sections along the tunnel is studied in combination with the regional tectonic stress, in order to provide a reference for the design and construction of the diversion project.
【作者單位】： 長(zhǎng)江科學(xué)院水利部巖土力學(xué)與工程重點(diǎn)實(shí)驗(yàn)室;華北水利水電大學(xué)水利學(xué)院;鄭州測(cè)繪學(xué)校;
【基金】：國(guó)家重點(diǎn)研發(fā)計(jì)劃(2016YFC0401801) 國(guó)家自然科學(xué)基金(51204025) 中央級(jí)公益性科研院所基金(CKSF2013033,CKSF2014064YT,CKSF2015040/YT)
【分類號(hào)】：TV672.1

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