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A platform for research: civil engineering, architecture and urbanism
Karst cave pile foundation inclined rock treatment method and pouring material
The invention belongs to the technical field of constructional engineering, and discloses a karst cave pile foundation inclined rock treatment method and a pouring material. The treatment method comprises the steps that a drilling machine leads a hole, high-pressure cutting and flushing are conducted, high-pressure grouting is conducted, when grouting is conducted to the contact face of inclined rock and the deviation of the perpendicularity of a drilled hole exceeds 1%, a punch hammer is lifted up, the hole is backfilled with a grouting material, and the grouting material is composed of hard rubbles with the size being 15-40 cm and strong-seepage quick-drying concrete; the strong-permeability quick-drying concrete is composed of water, sulphoaluminate cement, Portland cement, a cement-based permeable crystallization master batch, a dispersing agent and a water reducing agent. And the step of backfilling and filling the material comprises the following steps: throwing and filling the hard rubbles, then filling the strong-seepage quick-drying concrete slurry, performing impact drilling again after the concrete is cured until the concrete enters a uniform, stable and complete bed rock by more than 1m, and then performing normal construction. According to the method, the mode of combining the stone filling method and the concrete pouring method is adopted for the karst cave pile foundation inclined rock, and pile hole deviation caused by the inclined rock can be effectively prevented.
本发明属于建筑工程技术领域，公开了一种溶洞桩基斜岩处理方法及灌注材料。所述处理方法包括钻机引孔、高压切割及冲洗、高压灌浆，当灌浆至斜岩接触面，钻孔垂直度偏差超过1％时，提起冲锤，向孔内回填灌注材料，所述灌注材料由大小为15～40cm的硬质片石和强渗快干混凝土构成，所述强渗快干混凝土由水、硫铝酸盐水泥、硅酸盐水泥、水泥基渗透结晶母料、分散剂和减水剂构成；回填灌注材料步骤为先抛填硬质片石，然后灌注强渗快干混凝土浆料，待混凝土固化后再重新冲击钻进，直至进入均匀、稳定完整的基岩内1m以上，然后按正常施工。本发明针对溶洞桩基斜岩采用填石法与灌注混凝土法相结合的方式，可以有效防止斜岩导致的桩偏孔。
Karst cave pile foundation inclined rock treatment method and pouring material
The invention belongs to the technical field of constructional engineering, and discloses a karst cave pile foundation inclined rock treatment method and a pouring material. The treatment method comprises the steps that a drilling machine leads a hole, high-pressure cutting and flushing are conducted, high-pressure grouting is conducted, when grouting is conducted to the contact face of inclined rock and the deviation of the perpendicularity of a drilled hole exceeds 1%, a punch hammer is lifted up, the hole is backfilled with a grouting material, and the grouting material is composed of hard rubbles with the size being 15-40 cm and strong-seepage quick-drying concrete; the strong-permeability quick-drying concrete is composed of water, sulphoaluminate cement, Portland cement, a cement-based permeable crystallization master batch, a dispersing agent and a water reducing agent. And the step of backfilling and filling the material comprises the following steps: throwing and filling the hard rubbles, then filling the strong-seepage quick-drying concrete slurry, performing impact drilling again after the concrete is cured until the concrete enters a uniform, stable and complete bed rock by more than 1m, and then performing normal construction. According to the method, the mode of combining the stone filling method and the concrete pouring method is adopted for the karst cave pile foundation inclined rock, and pile hole deviation caused by the inclined rock can be effectively prevented.
本发明属于建筑工程技术领域，公开了一种溶洞桩基斜岩处理方法及灌注材料。所述处理方法包括钻机引孔、高压切割及冲洗、高压灌浆，当灌浆至斜岩接触面，钻孔垂直度偏差超过1％时，提起冲锤，向孔内回填灌注材料，所述灌注材料由大小为15～40cm的硬质片石和强渗快干混凝土构成，所述强渗快干混凝土由水、硫铝酸盐水泥、硅酸盐水泥、水泥基渗透结晶母料、分散剂和减水剂构成；回填灌注材料步骤为先抛填硬质片石，然后灌注强渗快干混凝土浆料，待混凝土固化后再重新冲击钻进，直至进入均匀、稳定完整的基岩内1m以上，然后按正常施工。本发明针对溶洞桩基斜岩采用填石法与灌注混凝土法相结合的方式，可以有效防止斜岩导致的桩偏孔。
Karst cave pile foundation inclined rock treatment method and pouring material
一种溶洞桩基斜岩处理方法及灌注材料
LIAO GUANGCHAO (author) / LI HUI (author) / ZHENG WEIWEN (author) / LI JIANHUA (author) / LUO YANCHUN (author) / XIAO MINSHAN (author) / WU GUOJIAN (author) / HUANG LIBIN (author) / HUANG YOUGUANG (author) / LI WENQUAN (author)
2023-02-07
Patent
Electronic Resource
Chinese
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