“九五”期间煤炭工业科技进步的五项主攻内容第一，在综采放顶煤技术上要取得新突破．力求在所有适用放顶煤的厚煤层都推广这一新工艺，使综采面单产和经济效益有一个大幅度提高。第二，积极引进、消化、推广锚杆支护技术，实现矿井支护上的革命。大幅度降低生产成本。第... During the “Ninth Five-Year” period, the five main topics of scientific and technological progress in the coal industry are first. To achieve new breakthroughs in the technology of fully mechanized top coal caving. Trying to popularize this new technology in all the thick coal seams suitable for caving, so that the yield per unit area and economic benefit of fully mechanized coal mining face has been greatly improved. Second, we should actively introduce, digest and promote the bolt support technology to realize the revolution in mine support. Significantly reduce production costs. The first ...