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七八年我们使用JXK—2型小口径测斜仪，由于该测斜仪的环测杆结合处易漏水，难密封，影响了仪器的使用。在ZK406孔（孔深900余米），测斜花了五天时间，仪器下井八次之多。在操作过程中，下井前反复检查校验仪器，环测杆结合处采用了涂油、缠棉纱、用高压胶布粘橡胶水后缠绕、外包黑胶布或乳胶薄膜、灌皮带腊等办法反复作密封试验。仪器一下井，匆忙测量，害怕仪器在孔内停留时间稍长而渗漏，最后还是在725米处漏水被迫停测，未能测到孔底，浪费了大量人工、器材和时间，更不能进行复测校核，仪器在孔内仅停留了1小时42分钟。
In 1978, we used the JXK-2 small-calibration inclinometer, which was difficult to seal due to the leakage of the ring-measuring rod joint of the inclinometer, which affected the use of the instrument. In the ZK406 hole (with a depth of more than 900 meters), the slanting took five days and the instrument went down eight times. During the operation, check the calibration instrument repeatedly before going down the well. The joint of the ring rod is coated with oil, wrapped with cotton yarn, adhered rubber water with high pressure adhesive tape, wrapped with black rubber cloth or latex film, and filled with belt wax to seal repeatedly. test. The instrument looked at the well and rushed to measure it. It feared that the instrument stayed in the hole for a long time and leaked. At last, it was forced to stop measuring at 725 meters. It failed to measure the bottom of the hole, wasting a lot of labor, equipment, and time. The recalibration was checked and the instrument stayed in the hole for only 1 hour and 42 minutes.