The utility model relates to a special expansion sleeve for drilling and wall protection with a plastic expansion sleeve, belonging to the drilling technical field of geological exploration. The technology comprises plastic expansion casing (11) and groove (12), plastic expansion casing is arranged on the wall of one or more grooves; high strength plastic expansion casing to replace the steel casing, forming a man-made cement hole wall with plastic expansion casing in hole section the wall, can prevent the collapse, prevention, anti water, anti Water Leakage off block, ensure the next step to continue drilling work. The utility model overcomes the defects of steel expansion casing expansion need high tensile 10-15 tons, and problems with complex expansion tool, high strength plastic expansion casing, not with the expansion tool, can realize fast, reliable and low cost mass with a diameter of borehole wall protection, drilling drilling, great to improve the efficiency of drilling work.
【技术实现步骤摘要】
【技术保护点】
1.一种用塑料膨胀套管进行钻孔护壁的专用膨胀套管,其特征在于包含塑料膨胀套管管体(11)和通槽(12),塑料膨胀套管管体的壁上设有一个或一个以上通槽。
【技术特征摘要】
【专利技术属性】
技术研发人员:田波,何蕙岚,王久全,
申请(专利权)人:唐山市金石超硬材料有限公司,
类型:实用新型
国别省市:13
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