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1981年1月和7月,我处先后锚喷施工了徐州鹿庄风井和宜兴白泥场矿副井两个井筒的马头门。徐州鹿庄风井井壁即是错喷支护,所以马头门的锚喷施工亦较顺利。宜兴白泥场矿副井井筒井壁是现浇混凝土,转入马头门施工时要改为锚喷支护,我们参照徐州鹿庄风井的经验,较好地完成了该井马头门的锚喷施工,达到了安全、优质、快速、经济的效果,为今后的工作积累了经验。一、工程概况宜兴白泥场矿副井净直径5米,混凝土井壁厚500毫米,马头门落底水平为-550.25米,地面标高+3.5米。马头门毛宽6.2米,最大掘进断面42.1
In January 1981 and July, our office has successively sprayed and constructed the Ma Taumen with two wellbores of Xuzhou Luzhuang wind well and Yixing Baichang field mine auxiliary shaft. Xuzhou Luzhuang wind shaft wall that is wrong spray support, so the horse head door anchor spray construction is relatively smooth. Yixing Baichang field mine shaft shaft wall is cast-in-place concrete, into Ma Tau door construction to be replaced by anchor and shotcrete support, we refer to the experience of Xuzhou Luzhuang well, well completed the well Ma Tau door Of the anchor spray construction, to achieve a safe, high quality, fast and economical effect, accumulated experience for the future work. First, the project profile Yixing Baichang field vice shaft net diameter of 5 meters, concrete wall thickness of 500 mm, Matou door bottom level of -550.25 meters, the ground elevation +3.5 meters. Horse head door hair 6.2 meters wide, the maximum boring section 42.1