一、人工打楔开采法 人工打楔开采法是用手钎凿孔,孔径30～35mm,孔距0.1—0.3m。一排孔凿成后,插入铁模,轮大锤连续打击,利用铁楔的劈力,把大理石迫裂。这种方法效率最低,开采工艺简单,成本较高,难以采出1M~3以上的荒料,但这种开采方法采出的荒料质量较好,整形费低,投资最少,是我国传统的大理石开采法。 First, the artificial wedge mining artificial wedge mining method is hand drill chisel hole diameter 30 ~ 35mm, pitch 0.1-0.3m. After a row of holes hewn into the iron mold, the wheel sledge hammer continuous combat, the use of iron wedge split force, the marble fracture. This method has the lowest efficiency, simple mining technology and high cost, so it is difficult to produce block materials above 1M ~ 3. However, this method has better quality of blocks, less plastic cost and less investment, and is a traditional Marble mining method.