percussion hole 中文意思是什麼
percussion hole
解釋
沖魂孔- percussion : n. 1. 敲打，叩擊；撞擊；碰撞。2. （由敲打產生的）震動。3. 【音樂】打擊；（樂隊的）打擊樂器組。4. 【軍事】擊發（裝置）。5. 【醫學】扣診（法）。
- hole : n 1 洞，穴，孔；（衣服等上的）破洞；傷口；漏洞；窩，坑；水流的深凹處，（河道的）緩流窪。2 （獸的...
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Abstract : the paper presented a kind of drilling hole method that adopted direct circulation and percussion drilling, casing and cliff - protection by mud. the method applied in the complex gravel layer which has the trend to emerge cave - in and drop from the drilling wall
文摘:介紹一種在砂卵石地層層厚復雜、孔壁易掉塊、易坍塌的鉆孔的成孔方法? ?正循環回轉與沖擊鉆進、套管與泥漿護壁成孔。 -
Discussed shallowly the karst area percussion drilling pile is digging in hole pile construction question processing artificially application
淺談巖溶地區沖擊鉆孔樁在人工挖孔樁施工問題處理中的應用
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