三峡水利工程是当今世界上最大的水利工程,大坝坝基便浇铸在三峡花岗岩岩床上。据中外专家勘探测定,三峡大坝一带的花岗岩质地坚固,其抗震、抗裂性均属世界一流。 三峡“一品红”花岗石赋存于三峡坝区宜昌、兴山、秭归三县交界的圈椅状岩体,属垩宁期黄陵花岗岩的过渡品,黄陵花岗岩矿床是一个近一千平方公里的大矿床,其中三峡一品红花岗石岩体出露面积为20多平方公里,其岩性为黑云钾长花岗岩,岩石磨光面呈鲜艳的朱红色,主要矿物成分为斜长石,钾长石,石英及少量辉石和副矿物刚玉、钛铁矿、磷灰石等。从目前开采出的荒料看,不仅花色好,光泽度 Three Gorges Water Project is the world’s largest water conservancy project, the dam foundation will be cast in the Three Gorges granite bed. According to the survey by Chinese and foreign experts, the granite in the Three Gorges Dam area is strong in texture and its earthquake resistance and crack resistance are all world-class. Three Gorges “poinsettia” granite occurs in the Three Gorges Dam area Yichang, Xingshan, Zigui three counties at the junction of the chair-shaped rock, chalking period is a transition from the Huangling granite, Huangling granite deposit is a nearly 1,000 square kilometers Of the large deposits, of which the Three Gorges Poinsettia granite rock outcrops an area of ​​more than 20 square kilometers, its lithology is black-kapont-granite, the rock polished surface was bright vermilion, the main mineral composition of plagioclase, Potassium feldspar, quartz and a small amount of pyroxene and secondary mineral corundum, ilmenite, apatite and so on. Block from the current exploitation of the material to see, not only good color, gloss