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A platform for research: civil engineering, architecture and urbanism
Reinforcing method for high-speed railway karez foundation
The invention discloses a reinforcing method for a high-speed railway karez foundation. The reinforcing method comprises the following steps that A, slurry intercepting barriers are embedded in boundary vertical shafts at the two ends of a closed conduit section in the karez foundation to be reinforced; B, the tail end of the grouting pipe extends into the closed conduit from one boundary vertical shaft and reaches the other boundary vertical shaft; a plurality of grouting holes are formed in the pipe wall, located in the closed conduit, of the grouting pipe; C, 250-350 parts by mass of cement and 1200-1400 parts by mass of coal gangue with the particle size being 10-20 mm are prepared into slurry with the water cement ratio being 0.25-0.45; D, a high-pressure grouting pump is used for injecting the slurry prepared in the step D into the closed conduit between the boundary vertical shafts through a grouting pipe, and the closed conduit is filled with the slurry; maintaining is performed for 2-3 days; and E, the boundary vertical shafts and other vertical shafts between the boundary vertical shafts are filled with gravels or pebbles with the particle size of 20-50 mm or solid waste near the construction site. According to the method, the original water storage and drainage functions of the karez are kept, and safe operation of the high-speed railway can be guaranteed; and meanwhile, operation is convenient, safe and environment-friendly, cost is saved, and engineering investment increase is small.
本发明公开了一种高速铁路坎儿井地基的加固方法，包括以下步骤：A、在待加固坎儿井地基中的暗渠段两端的边界竖井处埋设浆料拦截屏障；B、将注浆管的尾端从一个边界竖井伸入暗渠并到达另一个边界竖井处；且注浆管位于暗渠中的管壁上开设有多个注浆孔；C、将250‑350份质量的水泥、1200‑1400份质量、粒径为10‑20mm的煤矸石，配制成水灰比为0.25‑0.45的浆料；D、用高压注浆泵将D步配制成的浆料，经注浆管注入并填满边界竖井间的暗渠；养护2‑3天；E、使用粒径20‑50mm的碎石或卵石或工地附近的固体废物，将边界竖井及其间的其它竖井填满。该方法既保持了坎儿井原有蓄、排水功能，又能保证高速铁路的安全运行；同时，操作便捷、安全环保、节约成本，工程投资增加少。
Reinforcing method for high-speed railway karez foundation
The invention discloses a reinforcing method for a high-speed railway karez foundation. The reinforcing method comprises the following steps that A, slurry intercepting barriers are embedded in boundary vertical shafts at the two ends of a closed conduit section in the karez foundation to be reinforced; B, the tail end of the grouting pipe extends into the closed conduit from one boundary vertical shaft and reaches the other boundary vertical shaft; a plurality of grouting holes are formed in the pipe wall, located in the closed conduit, of the grouting pipe; C, 250-350 parts by mass of cement and 1200-1400 parts by mass of coal gangue with the particle size being 10-20 mm are prepared into slurry with the water cement ratio being 0.25-0.45; D, a high-pressure grouting pump is used for injecting the slurry prepared in the step D into the closed conduit between the boundary vertical shafts through a grouting pipe, and the closed conduit is filled with the slurry; maintaining is performed for 2-3 days; and E, the boundary vertical shafts and other vertical shafts between the boundary vertical shafts are filled with gravels or pebbles with the particle size of 20-50 mm or solid waste near the construction site. According to the method, the original water storage and drainage functions of the karez are kept, and safe operation of the high-speed railway can be guaranteed; and meanwhile, operation is convenient, safe and environment-friendly, cost is saved, and engineering investment increase is small.
本发明公开了一种高速铁路坎儿井地基的加固方法，包括以下步骤：A、在待加固坎儿井地基中的暗渠段两端的边界竖井处埋设浆料拦截屏障；B、将注浆管的尾端从一个边界竖井伸入暗渠并到达另一个边界竖井处；且注浆管位于暗渠中的管壁上开设有多个注浆孔；C、将250‑350份质量的水泥、1200‑1400份质量、粒径为10‑20mm的煤矸石，配制成水灰比为0.25‑0.45的浆料；D、用高压注浆泵将D步配制成的浆料，经注浆管注入并填满边界竖井间的暗渠；养护2‑3天；E、使用粒径20‑50mm的碎石或卵石或工地附近的固体废物，将边界竖井及其间的其它竖井填满。该方法既保持了坎儿井原有蓄、排水功能，又能保证高速铁路的安全运行；同时，操作便捷、安全环保、节约成本，工程投资增加少。
Reinforcing method for high-speed railway karez foundation
一种高速铁路坎儿井地基的加固方法
LIU XIANFENG (author) / ZHANG CHONG (author) / ZHANG YANFEI (author) / YUAN SHENGYANG (author) / SONG JINYANG (author) / TIAN KAIYUAN (author)
2022-02-11
Patent
Electronic Resource
Chinese
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