论文部分内容阅读
我队79年前使用胶皮垫圈、海带胶皮垫圈止水，效果较差，后使用粘土滑管止水器和缓冲塞止水器对四个地区、七个钻孔、八个层次进行分层止水、抽水试验和观测水头高度，均取得良好效果，如独山ZK 8孔，自流量1.688升/秒，水头高出地面23.5米（推算），经抽水试验，最大降深57.36米，流量4.426升/秒，止水延续时间长达650小时。独山ZK 9孔顺利测得承压水的水位深度。独山ZK 9、10两孔抽水试验后，提拔出来的止水器分别尚有1.3米、0.6米长度的用罗纹新纱布包扎的粘土泥柱，压缩结实，比刚包扎时的硬度还大。各个钻孔经抽水试验结束后，起拔止水器上部套管和下部支撑钻具均很顺利。
79 years ago my team used rubber gaskets, kelp rubber gaskets stop water, the effect is poor, after the use of clay slide stopwash and stop plug stopper on the four regions, seven drill holes, eight levels stratified only Such as Dushan ZK 8-hole, self-flow 1.688 liters / second, water head 23.5 meters above ground level (calculated), the pumping test, the maximum reduction of 57.36 meters, the flow rate of 4.426 L / s, water stop for up to 650 hours. Dushan ZK 9 hole smooth measured water pressure water depth. Dushan ZK 9,10 two-hole pumping test, respectively, to promote the stoppers are still 1.3 meters, 0.6 meters in length with a new gauze bandage wrapped clay clay column, compressive and firm, even than when the hardness of the bandage is also large. After each hole drilling test by pumping, pulling the upper casing and stop the lower part of the supporting drill are very smooth.