本文關(guān)鍵詞： 水壓致裂法 實測應(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》2017年02期 　論文類型：期刊論文

【摘要】：巖體初始地應(yīng)力場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)用水壓致裂法對秦嶺北緣某深埋引水隧洞應(yīng)力進行測定,結(jié)果顯示隧洞圍巖應(yīng)力等級屬于中低~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)力方向為近NE向,與區(qū)域構(gòu)造主壓應(yīng)力方位接近一致�；趯崪y數(shù)據(jù),對工程區(qū)應(yīng)力場進行回歸反演,并結(jié)合區(qū)域構(gòu)造應(yīng)力對隧道沿線的深埋和淺埋段應(yīng)力場分布規(guī)律進行了研究,以期為引水工程的設(shè)計和施工提供參考。
[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】： 長江科學(xué)院水利部巖土力學(xué)與工程重點實驗室;華北水利水電大學(xué)水利學(xué)院;鄭州測繪學(xué)校;
【基金】：國家重點研發(fā)計劃(2016YFC0401801) 國家自然科學(xué)基金(51204025) 中央級公益性科研院所基金(CKSF2013033,CKSF2014064YT,CKSF2015040/YT)
【分類號】：TV672.1

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1 端木杰超;深切河谷地應(yīng)力場分析研究[D];長江科學(xué)院;2014年

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本文編號：1554907