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1957年7月1日,我們在渾源县青磁窑社南海溝采用苏联定向爆破筑霸經驗,修筑攔洪土霸試驗成功。在这次試驗中,用炸藥550公斤,拋出土方442公方,堆了高达5公尺的一条土壩,而且抛到土壩的土壤压实程度極其紧密(干容重1.5克/立方公分),外坡1:1,里坡1:1.5,完全合乎規格質量和设计标准。这次定向爆破試驗是在刘副省長、乔副厅長指示下进行的,目的是为了迎接多快好省地建設社会主义的高潮,加快基本建設工程建筑速度,节約大量劳动力。原計划在刁蒿河口修筑緩洪攔沙水庫石壩一座,由于在石壩的設計技术、器材藥料等方面沒有赶上去,决定一方面設計石壩,一方面試筑土壩,以便在
July 1, 1957, we Qinghai County, Qinghai kiln community South Hailuogou the use of the Soviet Union directed blasting build Pa experience, building a successful trial of interception flood soil Pa. In this test, 550 kilograms of explosives were thrown out of 442 square earthworks and an earth dam of up to 5 meters was hewn. Soil compaction to the earth dam was extremely tight (dry weight of 1.5 grams per cubic centimeter) , The outer slope of 1: 1, the slope of 1: 1.5, fully in line with the specifications of quality and design standards. The directed blasting test was carried out under the direction of Vice Governor Liu and Deputy Director Joe with the purpose of meeting the climax of building a socialist society with more rapid, better and more economical results, speeding up the construction of capital construction projects and saving a great deal of labor force. Originally planned to construct a dam of slow-release sediment reservoir in Diaopee estuarine estuary. Due to the failure to catch up with the design technique, equipment and materials of rockfill dam, it was decided to design the rockfill dam on the one hand,