破壞頂板 的英文怎麼說

中文拼音 [pòhuàidǐngbǎn]
破壞頂板 英文
take down the top
  • 破 : Ⅰ動詞1 （完整的東西受到損傷） be broken; be damaged 2 （使損壞） break; break down; damage 3 （使...
  • 壞 : Ⅰ形容詞1 （不好的; 惡劣的; 使人不滿意的） bad 2 （表示程度深 多用在表示心理狀態的動詞或形容詞後面...
  • 頂 : i 名詞（人體或物體的最上部） crown; peak; top Ⅱ動詞1 （用頭支承） carry on the head 2 （從下面拱...
  • 板 : Ⅰ名詞1 （片狀硬物體） board; plank; plate 2 （專指店鋪的門板） shutter 3 [音樂] （打拍子的樂器） ...
  • 破壞 : 1 （使建築物等損壞） destroy; wreck; ruin 2 （使事物受到損害） do great damage to; do harm to; da...
  1. Based on the bedding features of weak intercalations in sandstone plates near the top of underground cavity, the probable failure scale of bedding sliding, the probable settlement, the folding places and the critical length of sandstone beams are computed seperately, then the stability of underground cavity is analysed

    針對地下工程頂部層狀砂巖中存在順層發育軟弱夾層的情況，分別對開挖后可能出現的層間滑動破壞范圍、巖板的沉降、折斷和臨界長度進行計算，並分析其穩定性。
  2. In the meanwhile, the semi - rigid connections can save steel capacity, and become a kind of not only economical, but also reliability connection. top and seat angle with double web angles semi - rigid connection is of performance, while few study has for complex destroy and many effect factors

    頂底角鋼雙腹板連接由於其較好的性能，但由於其破壞的形式比較復雜而且影響因素較多在國內外研究中觸及很少，本基金項目正處於此初衷對其進行理論研究與實驗分析。
  3. According to roof safety factor of 1. 2 for the mined - out area, minimum safety roof thickness at different rock in various span mined - out area was calculated by flac software, which transfixion of plastic zone was taken as criteria of roof breakage by using strength reduction technology and dichotomy theory

    摘要利用強度折減技術和二分法原理，以塑性區的貫通作為頂板破壞的標準，當采空區頂板的安全系數等於1 . 2時，利用flac軟體計算得出各種跨度空區在不同巖層中的最小安全頂板厚度。
  4. Abstract : based on the site actual measurements, the inversion analysis on the d estroy range of roof and floor by the combined mining of thin seams was made by using numerical modeling

    文摘:以現場實測結果為基礎，利用數值模擬與反演方法分析了薄煤層聯合開採的頂、底板破壞范圍。
  5. Its displacement could reduced to 40 percents at vault and 34 percents at floor in the condition of support, especially in the condition of cable support

    在拱頂和底板以張性破壞為主，而在拱腰和墻腳以剪切破壞為主。噴層對圍巖塑性破壞的限製作用顯著。
  6. The principal stress value arised alteration, the magnitude of stress closed to 25 ~ 32mpa, its influence scope was within the scope outside of tunnel opening 10 ~ 15 meter, maximum tense focused at vault and middle of floor about half meter. shearing stress focused at corner of vault and wall, always been sheared

    主應力量值也發生了較大改變，壓應力可達25 32mpa ，其影響范圍在隧道邊墻外10 15m ；拉應力集中在拱頂和底板中部約0 . 5m范圍內，最大可達10mpa ；在拱腰和墻腳常為剪應力集中區，易發生塑性剪切破壞。
  7. Research on mechanism of deformation and destruction in deep component roof

    深部復合頂板巷道變形破壞機理研究
  8. Through theoretical analyses in the article, the highly tough top - coal deflection before destroying is in inverse proportion to elastic mould, in direct proportion to tensile strength, and the conclusion that bigger deflection roof can ' t sufficiently transmit the compressible support to top - coal is drawn

    通過理論分析，獲得了高韌性煤層煤體在破壞前的撓度與彈性模量成反比，與抗拉強度成正比的關系，並得出撓度較大的頂板不能很好把支承壓力傳遞給頂煤的結論。
  9. This thesis used along caldwell ' s direct calculation method of the ultimate strength of ship hull girders, considered the double bottom and upperwing tank to ship ultimate strength contribution, first defined the stress distribution of the whole section of the ship girders. that is : in the sagging condition, deck and side shell of nearby deck remain the ultimate bucking strength, double bottom remain the yield stress. and the other parts keep elasticity

    本文沿用caldwell等人直接計算船體極限強度的思想，考慮雙層底和頂邊水艙對船體極限強度的貢獻，首先將船體梁整體破壞時剖面應力分佈確定為：在中垂狀態下，甲板及甲板附近的舷側均屈曲，雙層底區域則均屈服，其他部分保持彈性狀態；在中拱狀態下，雙層底及之間的底舷側均屈曲，甲板及頂邊水艙區域均屈服，其他部分則保持彈性狀態。
  10. Because the upper rocks are influenced after the mining lower coal, they glide along the primary bursting surface, and the upper rock layers can form surface - contact fabric by its shear and bulge function

    作者認為，下煤層開采後上覆頂板巖層受到二次擾動，其破壞移動主要是沿原有破裂面滑移，由於剪脹的作用，上覆巖層能夠形成面接觸的覆巖基本結構特徵。
  11. Moreover, from the point of the whole structure, the crust and corners of the station are very incidental to be destroyed

    從整個結構來看，車站頂板、各角隅處最容易發生破壞，因而在設計和施工過程中，應對上述部位予以重視。
  12. Study on the influence laws of side pressure coefficient on roof failure of roadway in alternating stratified soft roof rock

    側壓系數對巷道軟弱互層頂板巖體破壞影響規律研究
  13. Based on the in - situ observation of the firstly mined working face of nanliang coal mine, the roof movement, the roof weighting intensity, and entry deformation and failure of the working face were analyzed

    摘要通過南梁煤礦首采工作面采前的實驗研究和開采時的現場觀測，分析了工作面頂板的移動、來壓強度以及巷道變形破壞情況，總結了厚黏土覆蓋層淺埋煤層單體長壁工作面的礦壓顯現規律。
  14. The underground tests show that the deformation and roof delamination of roadway surrounding rock can be effectively reduced by means of great increase of the bolt pretensioned stress, the steel strip plays an important role in the rock bolting system, and there exsits a critical value for pretensioned stress, up to or beyond which the rock bolting can effectively control the deformation and damage of the surrounding rock

    井下試驗表明，大幅度提高錨桿預應力可顯著減小巷道圍巖變形，有效控制頂板離層；鋼帶在預應力支護系統中起非常重要的作用；錨桿預應力存在臨界值，達到或超過臨界值后錨桿支護可有效控制圍巖變形與破壞。
  15. In order to study basic roof ' s destruction movement that affects working face in horizontal section top coal caving in mining steep seams, this paper analyses tension of roof using elastic and thin board theory and concludes criterion of roof destruction based on long and narrow thin board

    摘要為研究急斜煤層水平分段放頂煤開采過程中基本頂破壞活動對工作面的影響，根據急斜煤層基本頂具有傾斜狹長板的特點，運用彈性薄板理論對基本頂巖層進行了拉應力分析，得出了頂板破斷的判別準則，建立了基本頂初次破斷后形成的「鉸接結構」的力學模型。
  16. In order to study the basic roof ' s destruction movement that affects working face in horizontal section top coal caving in mining steep seams, this paper analyses tension of roof using elastic and thin board theory and obtains criterion of roof destruction based on long and narrow thin board

    摘要為研究急斜煤層水平分段放頂煤開采過程中基本頂破壞活動對工作面的影響，根據急斜煤層基本頂具有傾斜狹長板的特點，運用彈性薄板理論對基本頂巖層進行了拉應力分析，得出了頂板破斷的判別準則，建立了基本頂初次破斷后形成的「鉸接結構」的力學模型。
  17. Study of 3d simulation on breakage for coal floor in mining above aquifer

    帶壓開采頂板破壞規律的三維相似模擬研究
  18. Mechanical characteristics and cracking mechanism of coal roof sandstone under high temperature

    煤層頂板砂巖在高溫下的力學特性及破壞機理
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