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沈   寧¹  ,  宗   亮² ,  李   萌³  ,  謝東武⁴

( 1 .  中水華東規劃設計有限公司 ， 山東 濟南 250100 ;  2.  水發規劃設計有限公司 ， 山東 濟南 250100 ; 3 .  濟南市水文中心 ， 山東 濟南 250014 ;  4.  同濟大學 土木工程學院地下建筑與工程系 ，上海 200092)

摘   要 ：在巖石邊坡工程中，巖體內部應力的釋放可能誘發斷裂和擾動 ，尤其是在爆破作業期間 ，這種擾 動效應尤為突出。考慮到巖體擾動的影響 ，采用 Hoek- Brown 破壞準則 ，通過有限元和極限解析法 ，系統評估了擾動因子和邊坡坡度對邊坡潛在滑動面及其穩定性的影響。結果表明：擾動因子和邊坡角度顯著影響巖石邊坡  的穩定性 ，特別是在巖質較差的邊坡中 ，這一影響更加顯著 ；擾動水平可能被視為常數或沿邊坡呈線性變化， 若在穩定性評估中忽視巖體擾動的影響 ，可能導致穩定系數的估值偏大；不同擾動因素情況下切巖邊坡的上限塑性區域 ，均質邊坡的破壞面  (D = 常數）更淺 ；破壞面的頂部從坡頂向斜面靠近，但破壞模式仍為邊坡趾部破壞 ；僅降低邊坡角度并不能確保邊坡的穩定性 ，在巖體邊坡穩定性評價中，必須全面考慮動因子的作用。

關鍵詞：Hoek- Brown 破壞準則 ；切巖邊坡 ；穩定性系數 ；巖體擾動

中圖分類號：TU452           

文獻標志碼：A           

文章編號： 1005- 8249   (2024)  04- 0040- 08 

DOI:10. 19860/j.cnki.issn1005 - 8249.2024.04.008

 

SHEN Ning¹  ,  ZONG Liang² ,  LI Meng³  ,  XIE Dongwu⁴

( 1 . Eastern China Water Conservancy Design Co. ，Ltd. ，Jinan 250100 ,  China;   2. Shuifa Planning & Design Co. ，Ltd. ，Jinan 250100 ,  China;  3 . Jinan  Center of Hydrology ,  Jinan 250014 ,  China;  4. Department of Underground Architecture and Engineering ,

School of Civil Engineering ,  Tongji University ,  Shanghai 200092 ,  China)

Abstract: In rock slope engineering, the release of internal stress within the rock mass can induce fractures and disturbances, especially during blasting operations, where these disturbance effects are particularly pronounced. Considering the impact of rock mass disturbances, this study systematically evaluates the influence of disturbance factors and slope angles on the potential sliding surface and stability of slopes using the Hoek-Brown failure criterion, finite element method, and limit analysis method. The results indicate that disturbance factors and slope angles significantly affect the stability of rock slopes, especially in slopes with poorer rock quality, where this impact is more pronounced. The disturbance level may be considered constant or vary linearly along the slope. Ignoring the impact of rock mass disturbances in stability assessments may lead to overestimation of the stability factor. Under different disturbance factors, the upper plastic zone of the cut rock slope and the failure surface of the homogeneous slope (D = constant) are shallower. The top of the failure surface moves closer to the slope from the crest, but the failure mode remains toe failure of the slope. Simply reducing the slope angle does not ensure slope stability. In the evaluation of rock slope stability, the role of disturbance factors must be comprehensively considered.

Keywords: Hoek-Brown failure criterion; cut rock slope; stability coefficient; rock mass disturbance

*基金項目： 國家自然科學基金項目  (41977227) 。

作者簡介：沈   寧  (1981 —)  男 ，本科 ，高級工程師 ，研究方向：水利工程規劃設計。 

通信作者：謝東武  (1980—)  男 ，博士 ，高級工程師 ，研究方向：地下建筑工程。

收稿日期：2023- 04- 20