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一种露天采矿无序回填区内SDDC抗滑桩的施工方法
一种露天采矿无序回填区内SDDC抗滑桩的施工方法，属于露天采矿区生态修复工程中桩基加固技术领域，可解决采矿区无序回填后软弱层与基岩斜坡面形成的滑面地基的抗滑问题，本发明采用深度在60米内的SDDC抗滑桩，桩端入岩部位采用水泥、碎石土混合料夯填，入岩长度为1倍桩径，岩面以上长度分别为1倍和1.5倍桩径，两桩之间结合部位交替错开，避免形成新滑面，其余桩身为普通夯填材料，使其在阻滑区组合形成竖向增强体，可提高结合部位的阻滑安全系数，使地基的稳定性达到设计要求，相较于抗滑灌注桩，在节省费用的前提下，解决了采矿区无序回填后软弱层与基岩斜坡面形成的滑面地基，采用SDDC群桩抗滑处理的关键技术。
The invention discloses a construction method of SDDC slide-resistant piles in an unordered backfill area of open-cast mining, belongs to the technical field of pile foundation reinforcement in ecological restoration engineering of open-cast mining areas, and can solve the problem of skid resistance of a sliding surface foundation formed by a soft layer and a bedrock slope surface after unordered backfill of the mining area. The pile end rock-entering portion is tamped and filled with cement and gravel soil mixtures, the rock-entering length is one time of the pile diameter, the length above the rock surface is one time of the pile diameter and the length above the rock surface is 1.5 times of the pile diameter, the combination portions of the two piles are staggered alternately, a new sliding surface is avoided, the other pile bodies are made of common tamped and filled materials, the other pile bodies are combined to form a vertical reinforcing body in a sliding resistance area, and the sliding resistance safety coefficient of the combination portions can be improved. The stability of the foundation meets the design requirement, and compared with an anti-sliding cast-in-place pile, on the premise that the cost is saved, the key technology of SDDC pile group anti-sliding treatment is adopted for the sliding face foundation formed by a soft layer and a bedrock slope face after disordered backfilling in a mining area is achieved.
一种露天采矿无序回填区内SDDC抗滑桩的施工方法
一种露天采矿无序回填区内SDDC抗滑桩的施工方法，属于露天采矿区生态修复工程中桩基加固技术领域，可解决采矿区无序回填后软弱层与基岩斜坡面形成的滑面地基的抗滑问题，本发明采用深度在60米内的SDDC抗滑桩，桩端入岩部位采用水泥、碎石土混合料夯填，入岩长度为1倍桩径，岩面以上长度分别为1倍和1.5倍桩径，两桩之间结合部位交替错开，避免形成新滑面，其余桩身为普通夯填材料，使其在阻滑区组合形成竖向增强体，可提高结合部位的阻滑安全系数，使地基的稳定性达到设计要求，相较于抗滑灌注桩，在节省费用的前提下，解决了采矿区无序回填后软弱层与基岩斜坡面形成的滑面地基，采用SDDC群桩抗滑处理的关键技术。
The invention discloses a construction method of SDDC slide-resistant piles in an unordered backfill area of open-cast mining, belongs to the technical field of pile foundation reinforcement in ecological restoration engineering of open-cast mining areas, and can solve the problem of skid resistance of a sliding surface foundation formed by a soft layer and a bedrock slope surface after unordered backfill of the mining area. The pile end rock-entering portion is tamped and filled with cement and gravel soil mixtures, the rock-entering length is one time of the pile diameter, the length above the rock surface is one time of the pile diameter and the length above the rock surface is 1.5 times of the pile diameter, the combination portions of the two piles are staggered alternately, a new sliding surface is avoided, the other pile bodies are made of common tamped and filled materials, the other pile bodies are combined to form a vertical reinforcing body in a sliding resistance area, and the sliding resistance safety coefficient of the combination portions can be improved. The stability of the foundation meets the design requirement, and compared with an anti-sliding cast-in-place pile, on the premise that the cost is saved, the key technology of SDDC pile group anti-sliding treatment is adopted for the sliding face foundation formed by a soft layer and a bedrock slope face after disordered backfilling in a mining area is achieved.
一种露天采矿无序回填区内SDDC抗滑桩的施工方法
2023-11-24
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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