CHUXin-peng,LIUJun,SUJin-long,et al.Application of Combined Trenchless Process for Repairing Small Diameter Drainage Pipe Collapse[J].China Water & Wastewater,2025,41(8):120-123.
非开挖组合工艺用于小口径排水管道塌陷修复
- Title:
- Application of Combined Trenchless Process for Repairing Small Diameter Drainage Pipe Collapse
- 摘要:
- 对武汉市南湖片区15条道路污水管道进行CCTV检测，共发现以三级及以上塌陷、破裂为主的严重缺陷52处，无法直接采用传统非开挖修复工艺且不具备开挖施工条件。针对该项目小口径排水管道严重变形塌陷问题，结合碎裂管短管拼接法和紫外光原位固化技术，提出了一种非开挖组合修复工艺并予以实施，修复后的污水管道外观质量和闭水试验均满足设计和规范要求。修复的管道运行1年后，其功能及结构完好，未出现破损、开裂或塌陷情况，排水顺畅。该工艺综合造价约6 941.74元/m。
- Abstract:
- The CCTV inspection of 15 road sewage pipes in the South Lake area of Wuhan found 52 serious defects mainly consisted of collapse and rupture of grade Ⅲ or above, which cannot be repaired directly through traditional trenchless processes and did not have the conditions for excavation construction. To address the serious deformation and collapse of small diameter drainage pipes, a trenchless repair process combining the fractured pipe short pipe splicing method and ultraviolet in-situ curing technology was proposed and implemented. The appearance quality and water closure test of the repaired sewage pipe both meet the design and specification requirements. After one year of operation, the function and structure of the pipeline are intact, without breakage, cracking or collapse, and with smooth drainage. The comprehensive cost of the process is about 6 941.74 yuan/m.
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