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申请号:201911153753.5 公开号:CN110847804A 主分类号:E21B1/00
摘要:【中文】本发明公开了一种冲击钻孔灌注桩的冲击功主动控制方法,涉及工程技术领域,本方法包括如下步骤:建立动力平衡表达式,推导出泥浆粘滞阻力表达式,推导出泥浆碰撞阻力表达式,将泥浆粘滞阻力、泥浆碰撞阻力、泥浆压差阻力、惯性力代入动力平衡方程,将速度时程的数学表达式程序化形成速度时程求解模块,利用速度时程求解冲击功时程,通过速度积分器求解锤头位移时程,通过位移时程和冲击功时程作位移—冲击功相关曲线。本发明通过建立冲击钻锤头在泥浆中的动力学模型,得到了锤头速度时程的解析解答,为冲击钻冲击作用计算提供了一条便捷通道,明确了泥浆粘滞阻力、泥浆碰撞阻力的数学表达式,具有很高的计算精度。 【EN】The invention discloses an active control method for impact work of an impact drilling cast-in-place pile, which relates to the technical field of engineering and comprises the following steps: the method comprises the steps of establishing a dynamic balance expression, deriving a slurry viscous resistance expression, deriving a slurry collision resistance expression, substituting the slurry viscous resistance, the slurry collision resistance, the slurry differential pressure resistance and the inertia force into a dynamic balance equation, programming a mathematical expression of a speed time course to form a speed time course solving module, solving an impact power time course by using the speed time course, solving a hammer head displacement time course by using a speed integrator, and making a displacement-impact power correlation curve by using the displacement time course and the impact power time course. According to the invention, by establishing a dynamic model of the hammer head of the percussion drill in the slurry, an analytic solution of the speed time course of the hammer head is obtained, a convenient channel is provided for calculating the impact action of the percussion drill, mathematical expressions of slurry viscous resistance and slurry collision resistance are determined, and the calculation precision is very high.
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申请号:202010066237.5 公开号:CN111254092A 主分类号:C12N1/20
摘要:【中文】本发明公开了一种用于增加烟草燃烧抽吸时口腔甜味、改善口腔舒适性的细菌制剂及烟草制品,该细菌制剂包括贝莱斯芽孢杆菌(Bacillus velezensis)YBN3、高地芽孢杆菌(Bacillus altitudinis)Y120和霍氏肠杆菌(Enterobacter hormaechei)Y399,菌株在中国微生物菌种保藏管理委员会普通微生物中心的保藏号分别为:CGMCC No.15625、CGMCC No.15626和CGMCC No.15627。将本发明细菌制剂喷施于烟草原料表面,发酵后可明显增加烟草原料燃烧抽吸时的口腔甜味,并整体改善口腔舒适性。 【EN】The invention discloses a bacterial preparation and a tobacco product for increasing oral sweet taste and improving oral comfort during tobacco combustion and smoking, wherein the bacterial preparation comprises Bacillus belgii (Bacillus velezensis) YBN3, Bacillus altitudinis Y120 and Enterobacter hopcalis (Enterobacter hormaechei) Y399, and the preservation numbers of bacterial strains in the China general microbiological culture Collection center are respectively as follows: CGMCC No.15625, CGMCC No.15626 and CGMCC No. 15627. The bacterial preparation is sprayed on the surface of the tobacco raw material, so that the oral sweet taste of the tobacco raw material during combustion and smoking can be obviously increased after fermentation, and the oral comfort is integrally improved.
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