spacing hole 中文意思是什麼
spacing hole
解釋
定位孔-
The thermal visualizations of jet impingement cooling with single or double row holes inside semi - enclosed channel are measured by using infrared camera and then the impingement cooling heat transfer coefficients are deduced. the effects of flow and geometry parameters on convective heat coefficients are obtained. the results show that : for a single row normal impingement, the impingement cooling effectiveness is enhanced with the increase of impinging reynolds number or the decrease of hole space to diameter ratio, and the best effectiveness is achieved under the jet - to - surface spacing equals to 2 ; when the jet is oblique to the confined wall, the cooling effectiveness is weaken especially under the jet - to - surface spacing ratio is greater than 2 ; for double rows normal impingement cooling, the cooling effectiveness of rear row jet is weaker than the front row under lower impinging reynolds number or bigger jet - to - surface spacing
對于單排垂直射流，沖擊冷卻效果隨射流雷諾數的增加、孔間距與直徑比的減小而得到提高，沖擊間距比為2時換熱效果最好;沖擊孔中心線向通道封閉一側傾斜后，射流沖擊冷卻的范圍變窄，當沖擊間距比大於2時駐點區的對流換熱能力明顯降低;對于雙排沖擊射流，孔排間距與直徑比的增加使沖擊冷卻范圍變大，但在兩排孔之間區域的對流換熱系數有所下降;在較小的沖擊射流雷諾數和較大的沖擊間距比下，後排射流的沖擊換熱效果要遜於前排射流。 -
The paper researches the relations between blasting effect and blasting parameters, including diameter of drill, non - coincidence coefficient, hole spacing, hole row - spacing, cartridge diameter, charge per hole, density of line charge, charging structure and detonating manner, and how to adjust the blasting parameters to get the best blasting effect under the given geological condition
本文在重慶市某高速公路合同段進行了現場預裂爆破試驗的基礎上，研究了炮眼直徑、不耦合系數、炮孔間距、炮孔排距、藥卷直徑、單孔藥量和線裝藥密度、裝填結構、起爆方式等爆破參數與爆破效果之間的聯系，以及如何在給定的地質條件下調整爆破參數獲得最佳的爆破效果。 -
Abstract : characteristics of film hole irrigation and effects of irrigation technological parameters on ir - rigating quota are analyzed, and the relationships among discharge per unit width, hole spacing and ir - rigation quota are studied in this paper, based on field experimental data
文摘:根據膜孔灌溉大田灌水試驗資料，分析了膜孔灌溉特點和灌水技術要素對膜孔灌灌水定額的影響，研究了單寬流量與開孔率與膜孔灌灌水定額的關系。 -
In the light of the change of the rock mass structure and blasting conditions and the application of new explosives in lanjian iron mines pit, tests were carried out on charges loading structure, blasting hole spacing pattern parameters and blasting methods. the optimized rational blasting parameters greatly improved the blasting efficiency, which led to good economical benefits
針對蘭尖鐵礦采場巖體結構、爆破條件等的變化及新型炸藥的使用，開展了裝藥結構、爆破孔網參數及爆破方法試驗，優化確定了合理的爆破參數，使爆破效率大幅提高，取得了良好的經濟效益。 -
Supporting the use of impact drilling electric drill. drilling, hole spacing with hole depth should meet the design requirements
鉆孔使用配套沖擊電鉆.鉆孔時，孔洞間距與孔洞深度應滿足設計要求 -
The author has analysed the seepage behavior of the fields in slope with the major parameter of the drain hole diameter and the length of hole. it is concluded that within the usual diameter of the hole, the size of the hole diameter has only minor influence on the field and the length of hole has more distinct influence. the author has analysed the effect of the center spacing change on the seepage field
其次，本文利用排水子結構法模擬排水孔，對排水孔孔徑、孔長多種布設方案的滲流場分佈對比分析，認為在通常可能取值的孔徑范圍內，孔徑變化對排水孔排水效果有影響，但影響較小；提出了孔徑選擇的原則；排水孔排水效果對排水孔孔長變化比較敏感，排水孔布設長度的選取應根據邊坡處治需要降低水頭的沿邊坡傾向方向的邊坡范圍來確定。
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