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我们过去所用水下钻孔机械是用纯旋转钻进的岩芯钻机,如XJ-100型及其他类似钻机。这类钻机用在水下钻孔爆破施工中,遇到坚实系数f大于8的坚硬岩层,钻进工效低,劳动强度很大。为了改变这种状况,我们进行了潜孔凿岩机水下钻孔试验。试验是采用宣化风动机械厂出产的反修100型潜孔凿岩机,在施工现场进行了4次试验,初步取得了良好效果。
The underwater drilling machines we used to use were purely rotary drilling core drills, such as the XJ-100 and other similar rigs. Such drilling rig used in underwater drilling blasting construction, encountered a hard rock f of solid factor f is greater than 8, low drilling efficiency, labor-intensive. In order to change this situation, we conducted a submerged drilling rig underwater drilling test. Test is the use of Xuanhua Pneumatic Machinery Factory anti-revision 100 DTH drilling machine, the construction site for 4 tests, initially achieved good results.