A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Shallow-buried thick quicksand layer subsidence area house foundation well lattice type reinforcing method
The invention discloses a shallow-buried thick quicksand layer subsidence area house foundation well lattice type reinforcing method. The method includes the steps that the ratio of the thickness of aquicksand layer to the thickness of a loose layer serves as a technical index, a loose layer moving angle is corrected, and a mining influence range is defined according to a bed rock moving angle and a loose layer moving correction angle; a building group is taken as a protected object, and the protection range of the building group is delimited according to the correction movement angles of theloose layer and the thick quicksand layer; a building group grouting reinforcement range is defined by combining the mining influence range and the building group protection range; grouting reinforcement belts are arranged in the grouting reinforcement range, the arrangement mode of the reinforcement belts is well-type overall control and point column type local reinforcement distribution, and the number of the grouting belts and the number of grouting holes are determined on the basis of the fluidity characteristics of a grouting body; and the grouting and sand consolidation sequence of thegrouting holes is determined, and dense grouting is conducted on a local position. According to the shallow-buried thick quicksand layer subsidence area house foundation well lattice type reinforcingmethod, a foundation can be well reinforced, and an economical, reliable, reasonable and feasible solution is provided for reducing foundation damage of scattered distributed buildings and structuresin a subsidence area.
本发明公开浅埋厚流砂层沉陷区房屋地基井格型加固方法，以流砂层厚度与松散层厚度比为技术指标，对松散层移动角进行修正，按照基岩移动角和松散层移动修正角划定采动影响范围；以建构筑物群为受护对象，按照松散层和厚流砂层修正移动角划定建构筑物群保护范围；结合采动影响范围和建构筑物群保护范围，划定建构筑物群注浆加固范围；在注浆加固范围内布置注浆加固带，加固带布置方式呈“井格式总体控制+点柱式局部加强”分布，基于注浆体流动性特征确定注浆带条数和注浆孔个数；确定注浆孔注浆固砂顺序，对局部位置进行加密注浆。本申请能够较好的加固地基，为减少沉陷区零散分布建构筑物群地基破坏提供经济可靠、合理可行的解决方案。
Shallow-buried thick quicksand layer subsidence area house foundation well lattice type reinforcing method
The invention discloses a shallow-buried thick quicksand layer subsidence area house foundation well lattice type reinforcing method. The method includes the steps that the ratio of the thickness of aquicksand layer to the thickness of a loose layer serves as a technical index, a loose layer moving angle is corrected, and a mining influence range is defined according to a bed rock moving angle and a loose layer moving correction angle; a building group is taken as a protected object, and the protection range of the building group is delimited according to the correction movement angles of theloose layer and the thick quicksand layer; a building group grouting reinforcement range is defined by combining the mining influence range and the building group protection range; grouting reinforcement belts are arranged in the grouting reinforcement range, the arrangement mode of the reinforcement belts is well-type overall control and point column type local reinforcement distribution, and the number of the grouting belts and the number of grouting holes are determined on the basis of the fluidity characteristics of a grouting body; and the grouting and sand consolidation sequence of thegrouting holes is determined, and dense grouting is conducted on a local position. According to the shallow-buried thick quicksand layer subsidence area house foundation well lattice type reinforcingmethod, a foundation can be well reinforced, and an economical, reliable, reasonable and feasible solution is provided for reducing foundation damage of scattered distributed buildings and structuresin a subsidence area.
本发明公开浅埋厚流砂层沉陷区房屋地基井格型加固方法，以流砂层厚度与松散层厚度比为技术指标，对松散层移动角进行修正，按照基岩移动角和松散层移动修正角划定采动影响范围；以建构筑物群为受护对象，按照松散层和厚流砂层修正移动角划定建构筑物群保护范围；结合采动影响范围和建构筑物群保护范围，划定建构筑物群注浆加固范围；在注浆加固范围内布置注浆加固带，加固带布置方式呈“井格式总体控制+点柱式局部加强”分布，基于注浆体流动性特征确定注浆带条数和注浆孔个数；确定注浆孔注浆固砂顺序，对局部位置进行加密注浆。本申请能够较好的加固地基，为减少沉陷区零散分布建构筑物群地基破坏提供经济可靠、合理可行的解决方案。
Shallow-buried thick quicksand layer subsidence area house foundation well lattice type reinforcing method
浅埋厚流砂层沉陷区房屋地基井格型加固方法
YAN YUEGUAN (author) / LI MING (author) / DAI HUAYANG (author) / TENG YONGJIA (author) / CHEN-LIU FEIYANG (author)
2021-04-02
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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