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在丹江口水利枢纽施工中,采用由6~#火雷管改装成的电雷管。为了准确的测定这种雷管的迟发时间,我们用电唱机改装成功了一种结构简单的测量仪器。测量仪器如图所示。在电唱机转盘上放一块和唱片同样大小的白铁片,在白铁片上再放一张澱粉纸(用吸水性好的白报纸在米汤中浸湿涼干)。试验时先在澱粉纸上涂以碘化钾溶液,然后合闸刀T_1并开动电唱机转盘,再合闸刀T_0 T_2合闸时电流经过雷管,在同一瞬间绕在雷管上的回路也接通,在该回路上接了4节电池(电压为6伏),回路的一端(负极)接在电唱机的转动轴上,另一端(正极)接在和转盘接触的活动触头上。雷管爆炸时,绕在雷管上的细纱包线被炸断,测量回路的电流也就被切断。因此该测量回路通电的时间和雷管从通
Danjiangkou water conservancy project in the construction, the use of 6 ~ # detonators into electrical detonators. In order to accurately determine the delay time of this detonator, we modified a record player to a simple structure of the measuring instruments. Measuring instruments as shown. Place a piece of white iron plate of the same size as the record on the turntable of the record player and place another piece of starch paper on the piece of white iron (soak it in rice soup with a white, highly absorbent paper). Test the first starch paper coated with potassium iodide solution, and then switch knife T_1 and start the turntable turntable, and then closing knife T_0 T_2 closing when the current through the detonator, at the same moment around the detonator loop also connected to the The circuit is connected to four batteries (voltage is 6 volts), one end of the loop (negative) connected to the turntable rotation axis, the other end (positive) connected to the movable contact with the turntable. When the detonator explodes, the yarn wrapped around the detonator is blown off, and the current in the measuring circuit is also cut off. Therefore, the measuring circuit energized time and detonator pass