湖北省宜昌县内花岗岩分布较广,山坡陡峻,风化强烈,地面植被不好,水土流失严重。在花岗岩盘中常有变质岩脉,其中有一种俗称黄石的岩脉极易坍塌。泥砂、渗漏和塌方三个问题,给渠道设计和施工带来很大困难。根据十多年来在花岗岩地区建渠的实践,对解决上述三个问题进行了初步探讨,现分述如下。 Yichang County, Hubei Province granite is widely distributed, steep slopes, strong weathering, ground vegetation is not good, serious soil erosion. In the granite plate often metamorphic dikes, including a commonly known as yellowstone dikes collapse easily. Sand, leakage and landslides three issues, to the channel design and construction has brought great difficulties. Based on more than 10 years of practice in the construction of granite area, the preliminary discussion on the solution to the above three issues is as follows.