punching drilling 中文意思是什麼
punching drilling
解釋
沖擊鉆井-
With the standardized workshop occupied 11600m2 and 630t hydraulic presses, 315t two axle punch presses, 250 sets of large, middle, small equipments, the company has the whole series production line. main equipments include cut - board machine, incurvate machine, opened incline pressure machine, drill attack machine, auto - moving hang machine, various kinds of moulding plastic machine, lathe, planer, drilling machine, horizontal axis rectangle platform flat grinder, universale lifting platform milling machine, eccentricity axis punching machine, liquid pressure derrick car, etc
主要設備有： 630噸液壓機315噸雙軸沖壓機250噸沖壓機等大型沖壓機床，剪板機折彎機鉆攻兩用機自動走軌起吊機各式型號注塑機各式車床刨床鉆床臥軸矩臺平面磨床萬能升降臺銑床偏心軸沖床液壓起重車等大中小設備386多臺套，形成具有自動沖壓步進的生產線。 -
The construction methods and caving protection measures for punching high thick and loosen soft coal seam in luling coal mine no. 2 dark tilt well in huaibei coal mine area are introducded. they include small section enlarged after the heading caving, high negative pressure and multi - raw drilling holes and strenous drawing - off, concentrated cross drill holes, cutting while drawing - off and putting the metal frame away
介紹了淮北礦區蘆嶺煤礦2主暗斜井採用小斷面導硐后刷大、高負壓多排鉆強抽，密集交叉鉆孔邊掘邊抽及設置金屬骨架施工方法和防突措施揭穿高突特厚松軟煤層。
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