Fist of all, on the basis of the research of agone boffins, this author investigates the interaction mechanism of bolts and rock, and introduces the elastic ? lastic analytical resolution which is consist of the liner structure, the equivalent reinforced wall rock and the original wall rock in the simple loading from the equivalent well - proportioned view ; this solution is very important meaning for the engineering design. on the basis of coulomb friction model, the author introduces the finite element equation of the contact problem in order to provide the academic foundation for the application of msc. marc. finally, combining the engineering practice of the non - linear analysis of shield tunnel through yellow river of the south - north water transfer and using the model of friction, the author researched the evolution law of stress and displacement field in the structure of grouted rock bolts, and analyzed the effect to the stress and deformation of surrounding rock mass due to anchor supports
首先,在前人研究成果的基礎上,對
錨桿與圍巖的相互作用機理進行研究,利用全長
錨固
錨桿的中性點理論,從等效均化的角度來考慮
錨桿對圍巖的加固作用,並推導了在簡單荷載作用下,含有襯砌、等效加固后的圍巖、原始圍巖三者的彈塑性解析解,對工程設計有著重要的參考意義;在數值模擬方面,以考慮
錨固圍巖滿足規則化庫侖摩擦模型為基礎,利用虛功原理推導了接觸問題的有限元方程的計算格式,為開發運用大型商用有限元軟體msc . marc提供了理論根據,也形成了本文的理論基礎:最後,論文以南水北調東線穿黃隧洞穩定性分析項目為工程實例,利用本文所述的接觸問題的摩擦模型理論,對
錨桿支護結構的應力場、位移場的變化規律進行了研究,分析了加
錨支護對隧洞圍巖應力、變形的影響。
Development on impact circumrotate bolt drill
沖擊旋轉式
錨桿鉆機的研製
Application of bolt support in coal face
錨桿支護在綜采面過斷層中的應用
Bolting securing control in tongting colliery
童亭礦
錨桿支護安全可靠性控制
The existing theoretical analyses have n ' t refelcted this true mechanism of the force transfering in fixed segment of anchor bar. for the sake of studying the working course from elastic to elastoplasticity slide better, this paper put forward shear stress - displacement curve, and solve the internal force distribution along anchor bar by the basic equntion. at the same time, this paper analysize the difference of columniform fixed segment and the segmeng with anchor slab at the foot of anchor bar
為了更好的研究
錨桿在不同荷載作用下,
錨桿的工作狀態從彈性到彈塑性發展的整個過程,本文進行了
錨桿受力的模型實驗研究,根據實驗結果提出了剪應力與位移的彈塑性本構關系表達式,並根據
錨桿受力的基本方程,求解得出了
錨桿在不同工作狀態下從彈性到彈塑性滑移的全過程中
錨桿的內力分佈。
Anchor davit socket
吊
錨桿承座
Research and development of new drilling bit for roof bolt driller
錨桿鉆機新型鉆頭的研製
Pressure - dispersive anti - float anchor technique and its application to engineering
壓力分散型抗浮
錨桿技術及其工程應用
Strengthening ill geologic section road chasm side slope with prestressed achor pile grid beam
預應力
錨桿格梁加固不良地質地段路塹邊坡
Stability calculation methods for grillage supporting structure with prestressed anchor and its application
框架預應力
錨桿邊坡支護結構穩定性計算方法及其應用
Paper barrel insertion grouting for the rock anchor
巖石
錨桿紙筒填塞法注漿工藝
As one of the. most effective rock shoring forms, rock - bolt reinforcement is still in use combining with some shoring forms such as three - dimensional vegetable netting, insufflating - virescence reinforcement, sash reinforcement and their effects are very distinctly
但作為減小巖體側向變形、增強邊坡穩定的
錨桿支護作為最有效的巖質邊坡的支護方式之一,仍廣泛地於三維植被網、邊坡綠化噴播、框格防護等形式結合進行邊坡防護,效果非常明顯。
The application of resin bolt made in thread steel with left direction revolves and no lengthways physique at coal mine entry
左旋無縱筋螺紋樹脂
錨桿在回採巷道的運用
( 7 ) the destroyed area came into being in the condition of supports, such as tensile at vault and floor, shearing at nance and corner of wall
而且,
錨桿支護對圍巖變形有較好的控製作用, 3 . 5m長
錨桿可使拱頂下沉下降40左右,底板隆起下降34 。
Products made of magnesium oxychloride concrete used in mines - anchor bolt bearing plates
礦用菱鎂混凝土製品
錨桿托盤
Technology of pre - stressed bolt support for rock floor gateway in deep mine complicated conditions
深井復雜條件下底板巖巷預應力
錨桿支護技術
No sinkhole and hige successful hole rate, so that the consumption for rolled up powder and anchor shank bits could be reduced sharply. construction efficiency could be promoted, and labor intensity could be reduced. a wide range of rock formation, it could be used in rock formation with f
不易縮徑,成孔率高,極大的減少了藥卷
錨桿的浪費提高了施工效率,降低了工人勞動強度適巖性廣泛,在f
Solving trough support problems with bolt and steel band
錨桿鋼帶在順槽支護中的應用
The anchorage force of bolt, the displacement of deep surrounding rock, and the surface displacement of the gateway were comprehensively observed, indicating that the testing entry affected by dynamical mining pressure still keeps stable, achieving a good supporting effect
錨桿受力、圍巖深部位移、頂板離層及巷道表面位移綜合觀測表明,受回採動壓影響后,試驗巷道穩定,支護效果好。
The distribution of the shearing force along the rod can be obtained. in process of analysis, standard calculating software matlab is used to compute some examples and draw the shearing force distribution curve. then the distribution character was obtained throughway the analysis of this picture
在求解過程中使用標準計算軟體matlab ( 5 . 3edition )進行數個算例的計算,然後使用該軟體的函數可視化功能繪制剪力沿桿體長度的分佈曲線,最後通過對圖象的分析得出壓力型錨桿剪力分佈的特徵。