求翻译：采用砍球法浇筑水下混凝土，首盘混凝土需用量由计算确定，保证首批混凝土浇筑后导管埋入混凝土中的深度≮1m，并能填充导管底部间隙。在整个砼浇筑时间内，导管口应埋入先前浇筑的混凝土内至少1.5m，防止泥浆冲入管内，但不得大于5m。是什么意思？

Cut-ball method using underwater concrete pouring, the first set determined by calculating the amount of concrete required to ensure that after the first concrete pouring of concrete pipe buried in the depth ≮ 1m, and the bottom of the gap can be filled catheter. Throughout the concrete pouring time

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Uses chops the ball law construction submarine concrete, the first concrete needs the quantity by the computation determination, after guaranteed the first batch concrete construction the drive pipe buries in the concrete the depth ≮1m, and can fill the drive pipe base gap.In the entire tong constru

Cut method of pouring underwater concrete, the first volume of concrete required is determined by calculation, guarantee one of the first concrete pouring catheter buried depth of concrete after ≮ 1M and filled catheter clearance at the bottom. Within the entire concrete pouring time, catheters shou

Cut-ball method using underwater concrete pouring, the first set determined by calculating the amount of concrete required to ensure that after the first concrete pouring of concrete pipe buried in the depth ≮ 1m, and the bottom of the gap can be filled catheter. Throughout the concrete pouring time