前言采用苏联定向爆破筑壩經騐,我們在潭源县青磁窑社南海溝修筑攔洪土壩試騐成功。根据此次爆破試验經騐証明,用定向爆破修筑土壩速度极快,在1.80秒鐘的时間里用藥量550公斤,爆拋出土方442公方,堆了高达5公尺的一条土壩,并且拋弃到土壩的土壤压实程度极其紧密,即1.5克/立方公分外坡1:1,里 Preface By using the experience of the Soviet Union for directional blasting dam construction, we succeeded in building a dam of earth-retaining earth dam at Nanhaigou, Qingziyao, Tanyuan County. According to the experience of the blasting tests, it has been proved that the construction of the earth dam with directional blasting is extremely fast, with a dosage of 550 kilograms in 1.80 seconds, an earth dam of 442 square meters thrown and an earth dam up to 5 meters , And the level of soil compaction abandoned to the earth dam is extremely tight, ie 1: 1 in an outer slope of 1.5 g / cm3