stress in the crust 中文意思是什麼
stress in the crust
解釋
地殼應力-
Chagan sag is a secondary tectonic unit in chagandelesu depression, northeastern yingen - eji ' naqi basin, and the basement of the basin is a paleozoic fold belt of continental margin or island arc at the connection region of north china plate * tarim plate and kazakstan plate, with the character of erogenic belt. in working area and its adjacent area, the forming tectonic setting of indosinian intrusion was that orogenic belt pressed strongly, intracontinental subduction ; that of early yanshan movement epoch was the stress field transferred from compression to extension meanwhile the incrassate crust of orogenic zone turned to extensional collapse ; and that of early cretaceous volcanics was that the area structure extensional collapse further more during the post period of orogenic phase
查干凹陷屬于銀根?額濟納旗盆地東北端查干德勒蘇坳陷內的一個次級構造單元，其盆地基底為古生代時期華北板塊、哈薩克斯坦板塊和塔里木板塊交接部位形成的陸緣或島弧褶皺帶，具有古生代造山帶的性質。研究區及鄰區印支期侵入巖形成於造山帶強烈擠壓陸內俯沖的構造環境；燕山早期侵入巖形成於由擠壓轉向拉伸、造山帶的增厚陸殼開始發生伸展垮塌的構造環境；早白堊世火山巖形成於造山期后進一步發生伸展垮塌的區域構造環境。 -
In recent years, the carst collapses that are occurring frequently in qixiashan hill area severely endanger the engineer and human life. there are many factors caused the occurring of the carst collapse in this area. besides the background of geology and geomorphology, the causes of changing of hydrodynamic, stress field of the earth s crust, and structure of rock and ground are more important
近年來，南京棲霞山地區巖溶地面塌陷頻繁發生，造成了巨大的經濟損失。巖溶地面塌陷的產生，除了地質地貌基礎外，更主要原因在於礦山開采改變了水動力條件地應力場及巖土體結構，尤其是礦坑疏干對水動力條件的影響最為顯著。 -
The surface loading of the mountains and the associated root of thickened crust produce horizontal deviatoric tension in the strong upper crust. in contrast, the deep, dense lithospheric root and its associated downflexing of the surface produce horizontal compressive deviatoric stress in the strong near - surface layer. the actual state of stress in the strong layer of the upper crust is the combined effect of these two opposite stress systems together with bending and other local and regional stresses such as due to ridge push
模擬結果表明：由於均衡機制，造山帶下部的低密度山根促使地殼隆升、造山，山根是地殼剛性層中張性構造應力的主要力源；與此相反，冷的高密度巖石圈向軟流圈插入、拆離、下沉，從而形成巖石圈根，它引起擠壓造山和巖石圈地幔物質的重新調整，也是地殼剛性層中擠壓性構造應力的主要力源。 -
Displacement function means for calculating geostress in fem analysis of underground houses is used, based on crustal stress data of underground cavern of pump water station of tong guanshan yixing to store energy, applying the displacement function theory and 3d nonlinear fem, the thesis simulates a displacement field applied the boundary in engineering area and obtain the initial crust stress field through load function in ansys. the result shows that the error between regressed ones and actual ones is controlled in allowed limit and supply the important data for building and design
根據宜興銅官山抽水蓄能電站地下廠房區的地應力實測資料，運用位移函數法理論，採用三維非線性有限元計算方法，反演出施加在廠房區邊界上的位移場，藉助州sys有限元分析軟體，獲取模型邊界節點的坐標信息，然後通過ansys軟體的載荷函數將邊界位移程序化施加到模型邊界上，最後得到整個區域的初始地應力場，結果表明回歸后的地應力值與實測值接近，為地下工程的施工設計提供了重要的資料。 -
At last, the analysis of the redistribution of the initial crust stress and the distribution of the plastic area is made ; the stability evaluation of the rock mass around the cavern is provided. the outcome is conformed with the reality. then applys the approximately equivalent dissolved rule, and considers the action of anchor staff to consolidate the rock mass, and correspond model is established, nonlinear finite element m ethod is applied to analyze the effect of the supports, the result shows that the action of anchor staff is obvious and deformation and stress state of the rock mass is greatly approved. so, the result conforms that the idea and the means used in the thesis is applicable
最後運用非線性有限元對廠房開挖后圍巖的應力重分佈和塑性開展區的分佈作了分析，評價了廠房的圍巖穩定性，其結果與實際開挖情況基本吻合，針對圍巖穩定性評價的結果，提出了錨固方案，運用等效概化原理考慮錨桿的作用，建立了採用系統錨桿加固后的地下廠房圍巖的三維彈塑性模型，運用非線性有限元分析了加固效果，結果表明錨固作用明顯，圍巖變形明顯減小，圍巖內的應力狀態大為改善，從而驗證了本文所採用的研究思想和方法是切實可行性的。 -
“ the average is thus a poor representation of the large variability of the stress amplitudes in the crust
「平均的情況則只能較差的反映地殼中應力振幅非常大不同的狀況。
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