水枪冲土在土方开挖工程中的应用

Application of wash-out gun to excavation of earthwork

采用水枪冲土的施工方法，冲挖石头河水库溢洪道上因不适合上坝需要废弃的106万m^3土方，施工过程及冲土施工方案中水枪试制、配套加压站、排泥渠及冲土作业等内容。

The technique of earthwork excavation by washout gun is used for cutting the spillway of Shitouhe Reservoir, by which the 106×104m3 of unsuitable soil are removed away by hydraulic gun. The preproduction of hydraulic gun, the accessory press station, silt drainage trench and the operation of flush are discussed in this paper.