经过认真研究后，决定采取筑坝拦洪造田地的方法，首先在沟头构筑一个两亩多的小水库拦蓄山洪，阻挡山石，减小洪水冲击力。
O O O O O O B-Time O O O O O O B-Thing I-Thing O O B-Thing I-Thing O O O O O O O B-Location I-Location O O B-Metric I-Metric I-Metric I-Metric I-Metric O B-Thing I-Thing I-Thing B-Location B-Thing I-Thing I-Thing O O O B-Thing I-Thing O O O B-Thing I-Thing O O O O