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随着科学技术日新月异的发展,水利水电基本建设进度越来越快。这主要是投入了大型土石方施工机械设备。如水利水电工程中的钢筋混凝土面板堆石坝,其开挖填筑月强度均在几十万 m~3以上。这样一来,传统概预算定额子目中的钻孔设备,如风镐、风钻、潜孔钻等设备越来越不能满足高强度施工进度的需要。这里以瑞典产的阿特拉斯履带式液压露天钻机、
With the rapid development of science and technology, the basic construction of water conservancy and hydropower is getting faster and faster. This is mainly invested in large-scale earth and stone construction machinery and equipment. For example, reinforced concrete faced rockfill dams in water conservancy and hydropower projects have monthly intensities of several hundred thousand m 3 or more. As a result, drilling equipment, such as pneumatic picks, pneumatic drills, and downhole drills, in the subheadings of traditional budget estimates are increasingly unable to meet the needs of high-intensity construction schedules. Here is an Atlas tracked hydraulic surface drilling rig made in Sweden.