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A platform for research: civil engineering, architecture and urbanism
Construction method of soil body reinforcing system at inlet and outlet of jacking pipe
The invention relates to a construction method of a soil body reinforcing system at an inlet and outlet of a jacking pipe, which comprises the following steps: constructing a three-side waterproof curtain on one side of the inlet and outlet of an open caisson, forming an enclosure structure by the waterproof curtain and the open caisson, and arranging a soil body reinforcing area at the inlet and outlet of the open caisson on the inner side of the enclosure structure; a bottom sealing reinforcing body is constructed at the bottom of the hole opening soil body reinforcing area, and the bottom sealing reinforcing body is located below the access hole opening of the open caisson; and a stirring reinforcing body is constructed above the bottom sealing reinforcing body, and the height of the stirring reinforcing body covers the entrance and exit position of the open caisson. The method has the advantages that the open caisson opening soil body is modified, and the modified sandy soil has the performance of clay; when the jacking pipe penetrates through the reinforcing area, a jacking pipe pipeline is tightly attached to the modified sandy soil, the modified sandy soil has the cohesive force characteristic, a mud film is formed between the modified sandy soil and the pipe wall of the jacking pipe, water and soil outside the reinforcing area can be prevented from flowing into a well, and therefore the risk of water gushing and sand gushing is avoided; and the construction investment cost is low, and the risks of water gushing and sand gushing are avoided.
本发明涉及一种顶管进出洞口处土体加固体系的施工方法，施工方法包括如下步骤：在沉井的进出洞口一侧施工三侧止水帷幕，止水帷幕与沉井形成围合结构，该围合结构的内侧为洞口土体加固区域；在洞口土体加固区域的底部施工封底加固体，封底加固体位于沉井的进出洞口之下；在封底加固体的上方施工搅拌加固体，搅拌加固体的高度覆盖沉井的进出洞口位置。本发明的优点是：将沉井洞口土体进行改性，改性砂土具备黏土的性能；当顶管穿过加固区域，顶管管道与改性砂土之间紧密贴合，改性砂土具有粘聚力特性，与顶管管壁之间形成泥膜，可阻止加固区外的水土流进井内，从而避免发生涌水、涌沙的风险；施工投资成本较小，避免发生涌水、涌沙的风险。
Construction method of soil body reinforcing system at inlet and outlet of jacking pipe
The invention relates to a construction method of a soil body reinforcing system at an inlet and outlet of a jacking pipe, which comprises the following steps: constructing a three-side waterproof curtain on one side of the inlet and outlet of an open caisson, forming an enclosure structure by the waterproof curtain and the open caisson, and arranging a soil body reinforcing area at the inlet and outlet of the open caisson on the inner side of the enclosure structure; a bottom sealing reinforcing body is constructed at the bottom of the hole opening soil body reinforcing area, and the bottom sealing reinforcing body is located below the access hole opening of the open caisson; and a stirring reinforcing body is constructed above the bottom sealing reinforcing body, and the height of the stirring reinforcing body covers the entrance and exit position of the open caisson. The method has the advantages that the open caisson opening soil body is modified, and the modified sandy soil has the performance of clay; when the jacking pipe penetrates through the reinforcing area, a jacking pipe pipeline is tightly attached to the modified sandy soil, the modified sandy soil has the cohesive force characteristic, a mud film is formed between the modified sandy soil and the pipe wall of the jacking pipe, water and soil outside the reinforcing area can be prevented from flowing into a well, and therefore the risk of water gushing and sand gushing is avoided; and the construction investment cost is low, and the risks of water gushing and sand gushing are avoided.
本发明涉及一种顶管进出洞口处土体加固体系的施工方法，施工方法包括如下步骤：在沉井的进出洞口一侧施工三侧止水帷幕，止水帷幕与沉井形成围合结构，该围合结构的内侧为洞口土体加固区域；在洞口土体加固区域的底部施工封底加固体，封底加固体位于沉井的进出洞口之下；在封底加固体的上方施工搅拌加固体，搅拌加固体的高度覆盖沉井的进出洞口位置。本发明的优点是：将沉井洞口土体进行改性，改性砂土具备黏土的性能；当顶管穿过加固区域，顶管管道与改性砂土之间紧密贴合，改性砂土具有粘聚力特性，与顶管管壁之间形成泥膜，可阻止加固区外的水土流进井内，从而避免发生涌水、涌沙的风险；施工投资成本较小，避免发生涌水、涌沙的风险。
Construction method of soil body reinforcing system at inlet and outlet of jacking pipe
一种顶管进出洞口处土体加固体系的施工方法
YIN ZHANGJIANG (author) / XUE JINCHUN (author) / CHEN WEI (author) / CHEN ZHAOFAN (author) / RUAN RENZHI (author) / JI XINXING (author) / ZHANG CHANGHAO (author) / NIE LEI (author) / QI SIYING (author) / ZHANG BIYUN (author)
2024-06-14
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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