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Water guiding grouting pile reinforcing treatment method for silt foundation overlaid with miscellaneous fill
The invention discloses a water guiding grouting pile reinforcing treatment method for an silt foundation overlaid with miscellaneous fill. The method comprises the following steps that a geological drilling rig is adopted to drill through overlying miscellaneous fill and a silt along with a pipe, and enters an underlying supporting layer to form a drilled hole; a grouting pipe is lowered into thedrilled hole until reaching the bottom of the drilled hole; a grouting pump is started, pervious concrete with slump of 100-150mm is injected into the grouting pipe from bottom to top in a segmentedmanner, and pulling the pipe upwards in a segmented manner until the pervious concrete is grouted into the overlying miscellaneous fill; the aforesaid steps are repeated according to a certain hole spacing, and construction treatment on a whole field is performed; a uniform pile body with high strength is formed, and soft soil on the periphery of the drilled hole is pushed and extruded; and pore water pressure generated when a soil body is pushed is dissipated through the pervious concrete, the soil body is promoted to be drained and solidified, the strength of soft soil in the foundation is improved, and finally, a pile-soil composite foundation with high foundation bearing capacity is formed. Later settlement is small, and the composite foundation bearing capacity is high.
本发明公开了一种上覆杂填土淤泥地基的导水注浆桩加固处理方法，包括以下步骤：采用地质钻机，跟管钻进穿过上覆杂填土和淤泥层，进入到下覆持力层中，形成钻孔；将注浆管下入到钻孔内，直至孔底；开启注浆泵，自下而上、分段往注浆管中注入坍落度为100～150mm的透水性混凝土，按分段向上拔管，直至注浆到上覆杂填土中；按一定的孔间距，重复前述步骤，对整个场地进行施工处理。最终形成均匀且具有较高强度的桩体并推挤钻孔周边软土；推挤土体时产生的孔隙水压力通过透水性混凝土消散，促使土体排水固结，提高地基内软土的强度，最终形成具有较高地基承载力的桩土复合地基，后期沉降小、复合地基承载力高。
Water guiding grouting pile reinforcing treatment method for silt foundation overlaid with miscellaneous fill
The invention discloses a water guiding grouting pile reinforcing treatment method for an silt foundation overlaid with miscellaneous fill. The method comprises the following steps that a geological drilling rig is adopted to drill through overlying miscellaneous fill and a silt along with a pipe, and enters an underlying supporting layer to form a drilled hole; a grouting pipe is lowered into thedrilled hole until reaching the bottom of the drilled hole; a grouting pump is started, pervious concrete with slump of 100-150mm is injected into the grouting pipe from bottom to top in a segmentedmanner, and pulling the pipe upwards in a segmented manner until the pervious concrete is grouted into the overlying miscellaneous fill; the aforesaid steps are repeated according to a certain hole spacing, and construction treatment on a whole field is performed; a uniform pile body with high strength is formed, and soft soil on the periphery of the drilled hole is pushed and extruded; and pore water pressure generated when a soil body is pushed is dissipated through the pervious concrete, the soil body is promoted to be drained and solidified, the strength of soft soil in the foundation is improved, and finally, a pile-soil composite foundation with high foundation bearing capacity is formed. Later settlement is small, and the composite foundation bearing capacity is high.
本发明公开了一种上覆杂填土淤泥地基的导水注浆桩加固处理方法，包括以下步骤：采用地质钻机，跟管钻进穿过上覆杂填土和淤泥层，进入到下覆持力层中，形成钻孔；将注浆管下入到钻孔内，直至孔底；开启注浆泵，自下而上、分段往注浆管中注入坍落度为100～150mm的透水性混凝土，按分段向上拔管，直至注浆到上覆杂填土中；按一定的孔间距，重复前述步骤，对整个场地进行施工处理。最终形成均匀且具有较高强度的桩体并推挤钻孔周边软土；推挤土体时产生的孔隙水压力通过透水性混凝土消散，促使土体排水固结，提高地基内软土的强度，最终形成具有较高地基承载力的桩土复合地基，后期沉降小、复合地基承载力高。
Water guiding grouting pile reinforcing treatment method for silt foundation overlaid with miscellaneous fill
一种上覆杂填土淤泥地基的导水注浆桩加固处理方法
BIN BIN (author) / HUANG XIAOQIAN (author) / HE MOLI (author) / JIANG HOULIANG (author)
2021-01-26
Patent
Electronic Resource
Chinese
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