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鑽粒鑽進時,送入孔内的水量(冲洗液),是根据鑽頭的直徑和送水係數進行計算的。其計算方法,可按以下經驗公式求得: Q=D·K 式中:Q——孔內送水量(公升/分)。 D——鑽頭直徑(公寸)。 K——送水係數(鑽粒鑽進時為1.5～3,合金鑽進時為7.5～12,魚尾鑽進時為10～15)。上式計算時,在鑽粒鑽進時送水係數的大小的選擇,主要是根據井底鑽粒和岩粉多少,以及孔壁的基固情况而決定。這就是說,井底鑽粒和岩粉多,孔壁基固,送水係數要大,如果鑽粒和岩粉少,孔壁鬆軟,那么送水係數就要小。因此,在實鑽前孔內送水量,就可以按上述公式妥當的進行計算。但是,在實
Drilling into the hole, the amount of water into the hole (rinse), is based on the diameter of the drill and water delivery coefficient calculation. The calculation method, can be obtained by the following empirical formula: Q = D · K Where: Q - hole water (liters / min). D - drill diameter (inch). K - water supply coefficient (drill when drilling 1.5 ~ 3, when the alloy is drilling 7.5 ~ 12, when the fish tail drilling 10 ~ 15). In the above calculation, the choice of the size of the water delivery coefficient during drilling of the drilling material is mainly determined by the amount of drilling material and rock powder in the bottom hole and the foundation solidity of the hole wall. That is to say, bottom of the hole and more rock powder, hole wall of the base, the water supply coefficient to be large, if the drill and rock powder less, hole wall soft, then the water delivery factor is smaller. Therefore, before drilling real hole water, you can according to the above formula properly calculated. However, in fact