Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preventing and controlling hole collapse of cast-in-situ bored pile
The invention discloses a method for preventing and treating hole collapse of a cast-in-situ bored pile, which comprises the following steps of: after a hole collapse occurs, putting a columnar body into the hole, cutting a blade foot of the columnar body into a soil body at the bottom of the hole, then backfilling low-grade concrete, mortar or cement paste into the hole, pulling out the columnar body after the low-grade concrete, mortar or cement paste is initially set, and then continuously drilling. According to the method, during hole collapse prevention and treatment, a columnar body is put into a collapse hole firstly, then low-grade concrete or mortar or cement paste is poured, the effect of reinforcing a soil body is achieved through cementation of a mixture and the soil body of the hole wall, on the other hand, the filled backfill material has a supporting effect on the hole wall, so that hole collapse is prevented, and due to the fact that the columnar body is put, the hole collapse is prevented; the columnar body can occupy a part of the volume in the collapse hole, so that the filling amount of the backfill material is reduced, a large amount of waste of the backfill material is avoided, and the cost for preventing and treating the collapse hole is reduced. The method is easy to operate and high in practicability and has good application and popularization value.
本发明公开了一种钻孔灌注桩塌孔防治的方法，出现塌孔后，向孔内放入柱状体，并使得柱状体的刃脚切入孔底的土体中，然后再向孔内回填低标号混凝土、砂浆或水泥浆，待其初凝后将柱状体拔出，然后再继续进行钻孔作业。本发明通过在塌孔防治时，先向塌孔内放入一个柱状体，然后再进行低标号混凝土，砂浆或水泥浆的灌注，通过拌合物与孔壁土体的胶结，从而达到加固土体的作用，另一方面填充的回填物料对孔壁有支撑作用，从而防止塌孔，由于放入柱状体，柱状体会占据塌孔内一部分的体积，从而减少了回填物料的灌注量，避免了回填物料的大量浪费，从而降低了塌孔防治的成本。本发明的方法操作简单，实用性比较强，具有良好的推广应用价值。
Method for preventing and controlling hole collapse of cast-in-situ bored pile
The invention discloses a method for preventing and treating hole collapse of a cast-in-situ bored pile, which comprises the following steps of: after a hole collapse occurs, putting a columnar body into the hole, cutting a blade foot of the columnar body into a soil body at the bottom of the hole, then backfilling low-grade concrete, mortar or cement paste into the hole, pulling out the columnar body after the low-grade concrete, mortar or cement paste is initially set, and then continuously drilling. According to the method, during hole collapse prevention and treatment, a columnar body is put into a collapse hole firstly, then low-grade concrete or mortar or cement paste is poured, the effect of reinforcing a soil body is achieved through cementation of a mixture and the soil body of the hole wall, on the other hand, the filled backfill material has a supporting effect on the hole wall, so that hole collapse is prevented, and due to the fact that the columnar body is put, the hole collapse is prevented; the columnar body can occupy a part of the volume in the collapse hole, so that the filling amount of the backfill material is reduced, a large amount of waste of the backfill material is avoided, and the cost for preventing and treating the collapse hole is reduced. The method is easy to operate and high in practicability and has good application and popularization value.
本发明公开了一种钻孔灌注桩塌孔防治的方法，出现塌孔后，向孔内放入柱状体，并使得柱状体的刃脚切入孔底的土体中，然后再向孔内回填低标号混凝土、砂浆或水泥浆，待其初凝后将柱状体拔出，然后再继续进行钻孔作业。本发明通过在塌孔防治时，先向塌孔内放入一个柱状体，然后再进行低标号混凝土，砂浆或水泥浆的灌注，通过拌合物与孔壁土体的胶结，从而达到加固土体的作用，另一方面填充的回填物料对孔壁有支撑作用，从而防止塌孔，由于放入柱状体，柱状体会占据塌孔内一部分的体积，从而减少了回填物料的灌注量，避免了回填物料的大量浪费，从而降低了塌孔防治的成本。本发明的方法操作简单，实用性比较强，具有良好的推广应用价值。
Method for preventing and controlling hole collapse of cast-in-situ bored pile
一种钻孔灌注桩塌孔防治的方法
WANG JIANDANG (Autor:in) / HE YOU (Autor:in) / YUAN CHANGFA (Autor:in) / YU CHANGKONG (Autor:in)
01.12.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
Cast-in-situ bored pile collapse hole treatment device and method
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