抽水试验是确切评定含水层透水性和富水性的重要手段。我们在学习了冶金812队使用射流泵经验的基础上,又根据我们多用中、小型钻机施工的特点,自行设计加工用于中、小口径钻孔抽水的射流泵,在我公司101队和102队工地试验。在海城工地一孔抽水,降深达29米,在辽阳工地一孔抽水,涌水量达2.6升/秒,降深达12.2米。从目前获 Pumping tests are an important means of accurately assessing the permeability and water-richness of aquifers. Based on our experience in using jet pumps of 812 Metallurgical Group and based on our multi-purpose medium and small-sized drilling rig construction, we designed and manufactured a jet pump for medium and small borehole pumping. In our company 101 and 102 Team site test. In Haicheng site a hole pumping down 29 meters, a hole in Liaoyang site pumping water inflow of 2.6 liters / sec, down to 12.2 meters. Received from now