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利用渡口市朱家包包矿51吨炸药的矿山爆破,在雅砻江二滩地区组织了详细的人工地震观测。通过走时反演,研究了这一带上部地壳的细结构,发现红坭断裂带的断面陡直(倾角75°),浅部断距为2公里,深部减小到0.5公里。
Using the blasting of 51 tons of explosives in the Zhujiaba Mine in Dukou City, detailed artificial seismic observations were organized in the Ertan area of the Yalong River. By means of traveltime inversion, the fine structure of the upper crust in this zone was studied. The section of the Hongjian fault zone was steep (dip angle 75 °). The shallow parting distance was 2 km and the depth was reduced to 0.5 km.