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四、计算载荷的确定1.理论载荷的确定1) 假设条件: ①刀盘对工作面沿洞轴方向的总推力以不计洞壁摩擦的油缸总推力P_0为准。②工作面假设是匀质的,刀盘刚度也各处相同,因而每一刀尖沿洞轴方向的进给量h(进尺)都相同。③P_0在各刀刀尖上是平均分配的(因为实际压向刀尖的各刀刀尖圆角半径相同,而且在连续掘进过程中,各刀沿洞轴方向的压力有自趋均化的趋势)。
IV. Determination of Calculation Load 1. Determination of Theoretical Load 1) Assumed conditions: 1 The total thrust of the cutterhead along the shaft axis of the working face shall be based on the total thrust P_0 of the cylinder without counting the friction of the hole wall. 2 The working surface is assumed to be homogenous, and the cutter head stiffness is also the same everywhere, so the feed amount h (seals) along the axis of the hole is the same for each tip. 3P_0 is evenly distributed on each tool tip (because the actual fillet radius of each tip is the same, and the pressure of each blade along the axis of the hole has a tendency to homogenize during the continuous excavation process. ).