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打坝淤地,是山区建设基本农田的一项重要内容,是抬高沟道侵蚀基点,防止沟壁坍塌,控制水土流失的主要措施。研究快速筑坝技术,对加快黄土高原建设,减少入黄泥沙,建设高产稳产农田,发展山区生产具有重要意义。定向爆破筑坝,工期短,速度快,工效高,但筑坝经济成本高,坝体质量不均匀,坝岸结合较差,拦洪蓄水后易发生穿孔跨坝。五十年代末六十年代初,我们试用定向爆破方法,在晋西修筑的几十座淤地坝,大部水毁,保留无几。
Dam construction is an important part of the construction of basic farmland in mountainous areas. It is the main measure to raise the base of erosion of ditches, prevent the collapse of ditch walls and control soil and water loss. Studying the technology of rapid damming is of great significance to speeding up the construction of the Loess Plateau, reducing the sediment into the Yellow River, building the farmland with high and stable yield, and developing the mountainous areas. Directional blasting dam construction, short duration, speed, high efficiency, but the high cost of damming, dam uneven quality, poor combination of dam, flood blocking water after the prone to pier through the dam. In the late 1950s and early 1960s, we piloted the directional blasting method and destroyed dozens of silt dam structures built in the western Shanxi Province, leaving most of the water destroyed.