摘要:
在陇南紫金李坝金矿钻探施工中遇强水敏性、破碎、复杂地层,普通绳索取心钻具岩心采取率低,平均采取率86畅5%,回次进尺少,多在1 m以下,最小回次进尺只有20~30 cm,钻进效率低,平均台班进尺约5 m。通过使用SYZX96型绳索取心液动锤,钻进效率明显提升,平均岩心采取率提高8%,平均回次进尺提高50%,平均台月效率提高17畅5%,纯钻时间增加到了60%左右。共完成6个钻孔,进尺2488 m,其中2个钻孔采用SYZX96型绳索取心液动锤,效果明显。总结出适合强水敏性、破碎、复杂地层绳索取心液动锤的使用经验,为类似地层钻探施工提供技术借鉴。
Abstract:
Strong water sensitive and broken formation was encountered in drilling construction in Liba gold mine of South-ern Gansu, drilling by ordinary wire-line coring tool resulted in low core recovery and low drilling efficiency, the average core recovery rate was 86.5%, the footage per run was below 1 meter, the minimum was only 20~30cm and the average footage per team was about 5 meters.Good drilling efficiency has been achieved by using SYZX96 wire-line coring hydro-hammer, the average core recovery rate, average footage per run and average machine efficiency per month have been im-proved by 8%, 50%and 17.5%respectively;drilling time increased to about 60%.Based on the application situation, the paper elaborates SYZX96 wire-line coring hydro-hammer about its structure, working principle and the points for atten-tion in operation.
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