综合精品_淫语对白_亚洲一线二线在线观看_自偷自拍av_女m被主人虐玩调教91_青草精品视频_一乃葵在线_村上里沙在线观看_国产精品刺激_日韩精品视频免费_国产又黄又猛又粗_3d蒂法精品啪啪一区二区免费_日韩一本在线_奇米精品一区二区三区四区_日本三级黄色录像

PDF全文閱讀

魏中凱 ， 楊智強 ， 李銳鵬

（河南省地質礦產勘查開發局第四地質勘查院，河南 鄭州 450000)

摘   要：為有效保證超高黃土不穩定斜坡的穩定性，以上合院不穩定斜坡為工程背景，在邊坡基本特征及穩定性分析基礎上，開展其防治設計，再通過變形預測構建防治效果評價指標，并以其評價防治手段的效果。分析結果表明：結合邊坡防治現狀及基本特征，可將其防治現狀劃分為了三段，其中， Ⅱ分段未采取防治措施，且其對前緣建設場地具有直接威脅，并經穩定性評價，得出Ⅱ分段邊坡在工況 1（ 天然工況）條件下屬基本穩定～穩定狀態，但在工況 2（ 暴雨工況）條件下屬不穩定狀態，并將安全系數設置為 1 . 2 時 ，得其最不利剩余下  滑力為 191 . 47 kN/m ,  因此 ，此段治理必要性顯著 。為切實保證不穩定斜坡的穩定，提出采用“ 樁板墻 ”進行防治，且在防治后進行變形監測及后續預測，得出邊坡防治后的變形雖會進一步增加，但增加速率趨于減小， 所得評價指標 Xs 的取值范圍介于 0. 60 ~ 0. 92 , 防治效果等級為Ⅱ級， 即邊坡后續變形具一般收斂趨勢，其防治效果較優，能有效保證其穩定。

關鍵詞 ：邊坡 ；基本特征 ；穩定性分析 ；變形預測 ；防治效果

中圖分類號 ：P642           

文獻標志碼 ：A           

文章編號 ：1005- 8249  (2023)   03- 0009- 08

DOI : 10. 19860/j . cnki . issn1005- 8249. 2023 . 03 . 009

WEI Zhongkai ,  YANG Zhiqiang ,  LI Ruipeng

(The Fourth Geological Exploration Institute of Henan Geology and Mineral Bureau ,  Zhengzhou 450000  ,   China)

 

Abstract:In order to effectively ensure the stability of unstable slopes on ultra-high loess, the unstable slopes of the above institute are taken as the engineering background. Based on the basic characteristics and stability analysis of the slopes, prevention and control design is carried out, and then deformation prediction is used to construct evaluation indicators for prevention and control effectiveness, and the effectiveness of prevention and control measures is evaluated. The analysis results show that the current prevention and control situation of the slope can be divided into three sections according to the current prevention and control situation and basic characteristics of the slope. Among them, the prevention and control measures are not taken in Section II, which poses a direct threat to the front edge construction site. Through stability evaluation, it is concluded that the slope of Section II is basically stable~stable under Condition 1 (natural condition), but unstable under Condition 2 (rainstorm condition), When the safety factor is set to 1.2, the most unfavorable remaining sliding force is 191.47kN/m, therefore, the necessity of governance in this section is significant. In order to effectively ensure the stability of unstable slopes, it is proposed to use "sheet pile wall" for prevention and control, and conduct Deformation monitoring and subsequent prediction after the prevention and control. It is concluded that the deformation of the slope after prevention and control will further increase, but the increase rate tends to decrease. The value range of the evaluation index Xs is 0.60~0.92, and the prevention and control effect is Grade II, that is, the subsequent deformation of the slope has a general convergence trend, and its prevention and control effect is better, which can effectively ensure its stability.

Keywords: lope ; basic characteristics ; stability analysis ;  deformation prediction; prevention and control effect

作者簡介 ：魏中凱  (1989—) , 男，本科，工程師，生態環境修復治理 、地質災害勘查設計、治理。

收稿日期 ：2023- 04-23