Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Hole body pretreatment method for reducing drilling resistance
The invention discloses a hole body pretreatment method for reducing drilling resistance, which comprises the following steps that a hole body is filled with a solidified material of flow state solidified soil, and the forming process of the solidified material is as follows: soil, a curing agent and water are combined according to a certain proportion and then uniformly stirred to form a flow state material with flowability; the solidified substance with certain strength is formed after the fluid substance is hardened, and the hole body is a soil hole or a karst cave. The unconfined compressive strength of solidified substances of the fluid solidified soil is low, the drilling resistance (especially the pile end resistance) of a pile machine is small, the drilling difficulty is small, the drilling time is short, the construction progress is accelerated, and the construction period is shortened. The flow solidified soil is adopted for pretreating the hole body, the treatment effect of the flow solidified soil is close to that of cement mortar or cement paste and low-grade concrete, and the conditions of surface collapse, pile casing falling, hole collapse and the like do not occur in the construction process. In constructional engineering with low requirements on the pressure-bearing performance of the pile foundation, the flow-state solidified soil is enough to stabilize the pile foundation.
本发明公开了一种用于减小钻进阻力的洞体预处理方法，包括：洞体中填充有流态固化土的固化物，所述固化物的形成过程为：将土、固化剂和水按照一定比例组合，然后搅拌均匀，形成具有流动性的流态物，所述流态物硬化后形成具备一定强度的所述固化物，洞体为土洞或溶洞。流态固化土的固化物无侧限抗压强度低，桩机的钻进阻力(尤其是桩端阻力)小，钻进难度小，钻进时间短，施工进度加快，缩短了施工工期。采用流性固化土预处理洞体，其处理效果与水泥砂浆或水泥浆以及低标号混凝土接近，且施工过程中未出现地表塌陷、护筒下落、塌孔等情况。对桩基的承压性能的要求不高的建筑工程中，将这种流态固化土来稳定桩基中的桩基也足以。
Hole body pretreatment method for reducing drilling resistance
The invention discloses a hole body pretreatment method for reducing drilling resistance, which comprises the following steps that a hole body is filled with a solidified material of flow state solidified soil, and the forming process of the solidified material is as follows: soil, a curing agent and water are combined according to a certain proportion and then uniformly stirred to form a flow state material with flowability; the solidified substance with certain strength is formed after the fluid substance is hardened, and the hole body is a soil hole or a karst cave. The unconfined compressive strength of solidified substances of the fluid solidified soil is low, the drilling resistance (especially the pile end resistance) of a pile machine is small, the drilling difficulty is small, the drilling time is short, the construction progress is accelerated, and the construction period is shortened. The flow solidified soil is adopted for pretreating the hole body, the treatment effect of the flow solidified soil is close to that of cement mortar or cement paste and low-grade concrete, and the conditions of surface collapse, pile casing falling, hole collapse and the like do not occur in the construction process. In constructional engineering with low requirements on the pressure-bearing performance of the pile foundation, the flow-state solidified soil is enough to stabilize the pile foundation.
本发明公开了一种用于减小钻进阻力的洞体预处理方法，包括：洞体中填充有流态固化土的固化物，所述固化物的形成过程为：将土、固化剂和水按照一定比例组合，然后搅拌均匀，形成具有流动性的流态物，所述流态物硬化后形成具备一定强度的所述固化物，洞体为土洞或溶洞。流态固化土的固化物无侧限抗压强度低，桩机的钻进阻力(尤其是桩端阻力)小，钻进难度小，钻进时间短，施工进度加快，缩短了施工工期。采用流性固化土预处理洞体，其处理效果与水泥砂浆或水泥浆以及低标号混凝土接近，且施工过程中未出现地表塌陷、护筒下落、塌孔等情况。对桩基的承压性能的要求不高的建筑工程中，将这种流态固化土来稳定桩基中的桩基也足以。
Hole body pretreatment method for reducing drilling resistance
一种用于减小钻进阻力的洞体预处理方法
PANG JIAWEI (Autor:in) / WANG CHUANG (Autor:in) / LI RUIYANG (Autor:in)
23.12.2022
Patent
Elektronische Ressource
Chinesisch
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