笏山金矿抢险救援6号钻孔一次性命中靶区的施工技术
投稿时间:2021-11-16  修订日期:2022-06-08  点此下载全文
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作者单位邮编
钟明 山东省煤田地质局第一勘探队 266500
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中文摘要:笏山金矿发生事故后,我单位接山东省应急厅通知,立即组织相关人员奔赴事故现场,按应急救援指挥部的要求,我单位施工6号救援钻孔,该孔的作用是:一是作为给养及通信联络孔;二是作为井巷排水孔;三是作为生命通道大口径施工先导孔。为完成上述施工目的,针对该矿地层特点,花岗岩硬度高,有些层段地层岩石破碎,并且地层含水等特点,为加快应急抢险进度,避免孔内事故发生,施工中本着“稳,准,快”三字方针,制定了从设备安装到施工工艺参数及操作规范,施工中避免了误工误时,避免了救援过程中次生事故的发生;全孔采用气动潜孔锤钻进,争分夺秒抢进尺,解决了全孔花岗岩硬度高常规牙轮钻头钻井进尺慢钻效低的问题,并确保了钻孔一次性进入预定靶区,施工中做到了“稳、准、快”,圆满完成了该孔的施工。
中文关键词:潜孔锤  钻具  钻压  中性点  防斜  泡沫剂
 
Construction technology of No.6 borehole hitting target area in Hushan gold mine
Abstract:After the accident in Hushan gold mine, our company received the notice from the emergency department of Shandong Province and immediately organized relevant personnel to rush to the accident site. According to the requirements of the emergency rescue headquarters, our company constructed No. 6 rescue borehole. The functions of this borehole are: first, as a supply and communication hole; Second, as the drainage hole of shaft and roadway; Third, as a life passage, large-diameter construction pilot hole. In order to complete the above construction purposes, according to the characteristics of the strata of the mine, such as high hardness of granite, broken rocks in some strata and water content in the strata, in order to speed up the emergency rescue progress and avoid accidents in the hole, the process parameters and operation specifications from equipment installation to construction are formulated in accordance with the three principles of "stability, accuracy and speed", so as to avoid delay in work and time during construction, Avoid the occurrence of secondary accidents in the rescue process; The whole hole is drilled with pneumatic DTH hammer, and the footage is scrambled against time, which solves the problem of high hardness of granite in the whole hole, slow footage and low drilling efficiency of conventional cone bit, ensures that the drilling enters the predetermined target area at one time, achieves "stability, accuracy and speed" in the construction, and successfully completes the construction of the hole.
keywords:DTH hammer  Drilling tools  WOB  Neutral point  Anti skew  Foam agent.
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