一概述三峡水利枢纽工程的混凝土总量在三千万立米以上,需要细骨料约一千五百万立米,坝址附近河滩仅有大量的细砂,而无足够的合格的天然砂料.黄柏河及宜昌附近长江河床所储有的天然砂石料经葛洲坝工程采用后将所剩无几.三峡工程如再要采用砂砾石则要到宜都、枝江一带才有如此之大的储量,且质量不够理想.质量良好、储量也足够的纯砂料产地则在洞庭湖一带,水运距离在四百公里以上,且有一段只能通航小吨位船只.洪水期又不能采运,每年所需三百万吨以上砂料要在6～8个月内采运至工地堆存起来,其开采、运输、堆存设备 An overview of the Three Gorges Project total concrete volume of 30 million cubic meters above, the need for fine aggregate about 15 million cubic meters, dam site near the beach only a large number of fine sand, and not enough qualified natural sand. Natural sand and gravel stored in the Yangtze River bed near the Huangbaihe River and Yichang will be depleted by the Gezhouba Dam project, and the Three Gorges Project will have to have such gravel reserves in the Yidu and Zhijiang areas Quality is not ideal. Good quality, reserves are sufficient pure sand origin is in the Dongting Lake area, the water distance of 400 kilometers or more, and only a small section of navigable small tonnage of flood period can not be harvested, the annual required three More than one million tons of sand to be collected within 6 to 8 months to the site piling up its mining, transportation, storage equipment