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目前我国矿山在进行深孔凿岩时,均使用4重型凿岩机,并采用气支架或一般双腿架子,凿岩最大深度为15公尺。最近美国使用一种新型的支架式凿岩机如图1及图2所示,在7呎高的开拓石巷内,最大凿岩深度可以达到100多英尺(30多公尺)。凿岩机为4″或4(1/2)″,托盤系铝制的,它较一般托盤长,在托盤的末端加一挟钎器,钎子銲为接桿式,用套管连接,钎子尾只有一种(很短),钎子桿也只有一种。
At present, China’s mines in the deep-hole drilling, the use of 4 heavy rock drill, and the use of gas support or general legs stand, rock drill the maximum depth of 15 meters. Recently, a new type of jackhammer was used in the United States. As shown in Figure 1 and Figure 2, the maximum rock drilling depth can reach more than 100 feet (30 meters) within a 7-foot open rock roadway. Drilling machine for the 4 “or 4 (1/2)”, the tray is made of aluminum, it is longer than the average tray, add a clamp at the end of the tray brazing, brazing welding rod, with a sleeve connection, Only one tail (very short), there is only one kind of solder rod.