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在利用钻孔变径台阶进行深孔注浆封孔时,传统的封孔方式是挤压式,当封孔材料为海带类缠绕物时,挤压式封孔法存在成功率低的缺陷。为了提高封孔成功率,改变挤压式为楔入式。楔入式封孔法可从封孔材料内侧使其张开膨胀,提高封孔的成功率。工程实践表明,楔入式封孔法的成功率要高于传统的挤压式封孔法,在一定条件下可以替代挤压式封孔法在注浆生产中推广使用。
In the process of deep hole grouting sealing by using the step of hole drilling, the traditional sealing method is squeezing. When the sealing material is kelp wound, the squeezing sealing method has the defect of low success rate. In order to improve the success rate of sealing, change the squeeze type to wedge type. Wedge-type sealing method can be expanded from the inside of the sealing material to expand, improve the success rate of sealing. Engineering practice shows that the success rate of wedged sealing method is higher than the traditional extrusion sealing method, under certain conditions can replace the extrusion sealing method in grouting production to promote the use of.