pre-blasting 中文意思是什麼

pre-blasting 解釋
預噴砂
  1. Finally, some methods calculating cast blasting parameters and pre - splitting blast parameters and some advices of minish losing coal were brought forward

    最後給出了確定高臺階拋擲爆破參數和預裂爆破參數的方法，並提出了減小煤損失的一些措施。
  2. Application of pre - splitting blasting to high rock slope

    高邊坡預裂孔施工技術
  3. Study on wide space pre - splitting blasting in bayanghe stock yard

    八洋河料場寬孔距預裂爆破研究
  4. Effectiveness of outburst - prevention measures of combining gas pre - drainage by highly - located roadway in roof with deep - hole loosening blasting

    頂板高位巷預抽與深孔松動爆破相結合防突出措施效果
  5. Experimental study on short delay pre - splitting blasting among the holes

    孔間微差預裂爆破試驗研究
  6. Under the consideration of the engineering geological condition of dahuashui hydropower station, the pre - splitting blasting technology and reasonable construction method are adopted for the excavation of the dam foundation in accordance with the analysis on the rock strata therein, in which the design of the blasting parameters and powder charging structure as well as the angle control and the height of the excavating steps are particularly determined, and then better splitting effect is got for the slope excavation and the quality requirement of the construction is satisfied as well

    摘要結合大花水水電站大壩工程地質條件，通過分析巖層具體情況，採用預裂爆破施工技術，合理施工方法進行壩基開挖，並對爆破參數和裝藥結構的設計，鉆孔的角度控制和梯段高度精心確定，使該邊坡開挖預裂取得良好的效果，保證了壩基開挖的質量要求。
  7. The current situation of building demolition blasting is investigated in this paper firstly, and the safety - fault theory is imported to analyze and evaluate the safety of demolition blasting. the probable factors causing the accidents of building demolition blasting are identified by hazard pre - analysis technique according to accidents statistics and fault - cause theory

    首先研究了當前樓房拆除爆破研究的現狀及工程中存在的安全事故問題，根據事故致因理論，通過對樓房拆除爆破事故的統計分析，應用危險性預先分析技術，對樓房拆除爆破中可能的事故原因進行了辨識。
  8. For example of granite, block stone mining analyzed deeply the blasting parameter ; the construction point of pie - split blasting engineering, and evaluated the blasting effect the result shows that pre - split blasting is applied successfully in the project

    摘要針對花崗巖塊石開采工程，深入分析了預裂爆破參數的選擇、爆破施工應遵循的要點，並對爆破效果進行了評價，結果表明預裂爆破在該項工程中得到了成功應用。
  9. Analysis on interruption of propagation of detonation during a pre - splitting blasting

    一次預裂爆破傳爆中斷的原因分析
  10. Application of pre - splitting blasting technique in road - slope project

    預裂爆破技術在公路邊坡工程中的應用
  11. Calculation of reasonable pre - splitting blasting parameters of east intensive mining area of gushan pit

    姑山采場東部強采區預裂爆破合理參數的計算
  12. Application of loose pre - shearing blasting technique about deep hole in the construction of deep road chasm

    深孔強松動預裂爆破在深路塹開挖中的應用
  13. Considering cast blasting was to be carried in one internal coal surface mine, the cast blasting parameters, pre - splitting blast parameters, types of explosive and construction of charge were studied based on overseas examples

    摘要針對國內大型露天煤礦要採用高臺階拋擲爆破技術，根據國外的事例經驗，詳細研究了高臺階拋擲爆破參數、預裂爆破參數、炸藥類型和裝藥結構。
  14. The pre - splitting blasting design expert system can be applied to cutting excavation of the other expressway

    該系統可以應用到其他高速公路路塹邊坡的開挖預裂爆破工程實踐中。
  15. According to the principle of expert system and neural network, visual c + + 6. 0 and sql sever 2000 are used to develop a pre - splitting blasting design expert system for cutting excavation of expressway. the key algorithm of the expert system is the bp neural network

    根據專家系統與神經網路的原理，利用可視化軟體開發工具vc + + 6 . 0和sqlserver2000 ，設計開發了高速公路路塹邊坡開挖預裂爆破設計專家系統，其核心演算法是bp神經網路。
  16. The primary conclusions are drawn in this paper on these points : ( 1 ) after the blasting data of delayed time and height are gained based on the theory of gradually disintegration, the elements need to kill are executed similar with destroying the part of the building. then the pre - condition cg solver is pitched on to execute the nonlinear analysis

    本文的主要成果如下： （ 1 ）根據逐段解體法爆破拆除設計的原理，計算秒延差時間和爆破高度，在已劃分網格的有限元模型中殺死擬爆除的部分單元，使整體結構處于失穩狀態下，然後利用前置條件共軛梯度法求解器對結構進行材料和幾何非線性求解。
  17. With artificial neural network to consider affecting the rock to crack in pre - split blasting, people have established the calculation of intelligence model system which can predict and forecast the result and overcome the lack of the theory, model and empirical formula. the system has very great realistic meaning in designing and guiding actual engineering. with the rock ' s crack in pre - split blasting as the studied object, the reason of crack of mineral and rock in pre - split blasting and the parameter design are studied in the paper

    運用人工神經網路綜合考慮影響巖石預裂爆破成縫的因素，建立運算模型智能系統，可克服目前預裂爆破成縫理論、成縫模型、經驗公式的不足，對實際工程的設計與指導，具有很大的現實意義本文以巖石預裂爆破成縫作為研究對象，對礦巖的預裂成縫機理及其參數設計進行了研究。
  18. Aplication of short delay pre - splitting blasting technology among and inside deep holes in engineering blasting of fragment room

    孔間微差預裂爆破技術在破碎峒室工程爆破中的應用
  19. Blasting stress wave of bedded composite rock spread rules and rock damage situations are studied. the inflection of manner and structure of detonation of pre - splitting and step blasting on blasting effect have been studied

    分析了層狀復合巖體中的爆炸應力波的傳播規律和爆破前後巖體損傷狀況，並研究了層狀復合巖體中預裂爆破和臺階爆破技術的裝藥方式和裝填結構對爆破效果的影響。
  20. At first, the author has analyzed the theory, mechanism and shock - absorption in pre - split blasting, studied the rising of crack, expanding and stopping, and did various factors which influence on the crack of rock in pre - split blasting. the main factors have been determined to be the strength of mineral and rock, the diameter of drill, the type of explosive and the growth degree of crack. then, the author has researched bp neural networks " work principle, structure and defectiveness

    首先分析了巖石成縫的理論、機理和減震作用，研究了裂紋的起裂、擴展和止裂；分析了各種因素對巖石預裂爆破成縫的影響，確定了礦巖強度、孔徑、炸藥類型和裂隙發育程度作為主要影響因素；並研究了bp神經網路工作原理、結構和缺陷，把改進的bp神經網路運用在巖石預裂爆破參數設計中，建立以礦巖強度、孔徑、炸藥類型和裂隙發育程度為主要影響指標的bp神經網路的預裂爆破參數設計識別模型；運用matlab6 . 5語言開發了爆破參數設計的智能系統，實現了預裂爆破參數設計的自動化，用工程實例驗證系統模塊的功能。
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