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A platform for research: civil engineering, architecture and urbanism
Construction method of spiral jet grouting waterproof curtain in water-enriched sandy gravel geological condition
The invention discloses a construction method of a spiral jet grouting waterproof curtain in a water-enriched sandy gravel geological condition. The method comprises the following steps of excavatingpile location hole downward in a to-be-constructed pile location and transferring a protecting casing down in the pile location hole along with an excavating depth till the pile location hole is excavated; transferring a sand preventing pipe which is closed at the bottom down in the protecting casing, wherein the sand preventing pipe penetrates the pile location hole; extracting the protecting casing upward till the protecting case is removed fully; transferring a spiral jet grouting pipe down in the sand preventing pipe to the bottom position of the sand preventing pipe; and spirally groutinghigh pressure air and slurry in the sand preventing pipe by means of a spiral jet grouting pipe, wherein the high pressure air and the slurry crush the wall of the sand preventing pipe and cuts a surrounding soil mass, and a stratum gap is filled with the slurry and the slurry is frozen and hardened to form a spiral jet grouting pile. The construction method of the spiral jet grouting waterproofcurtain in the water-enriched sandy gravel geological condition is more reliable, efficient and economical and practical.
本发明公开了一种富水砂卵石地质条件下旋喷止水帷幕施工方法，包括以下步骤：于待施工桩位处向下开挖桩位孔，且随着开挖深度于所述桩位孔内下放防护筒直至开挖完成；于所述防护筒内下放底部封闭的防砂管使所述防砂管贯通所述桩位孔；向上抽出所述防护筒至所述防护筒全部移除；于所述防砂管内下放旋喷管至所述防砂管底部位置；利用所述旋喷管于所述防砂管内旋喷高压空气和浆液，高压空气及浆液冲碎所述防砂管管壁并切削周围土体，使所述浆液填充地层空隙并凝结硬化形成旋喷桩。本发明在富水砂卵石地质条件下旋喷止水帷幕的施工方法更加可靠、高效、经济实用。
Construction method of spiral jet grouting waterproof curtain in water-enriched sandy gravel geological condition
The invention discloses a construction method of a spiral jet grouting waterproof curtain in a water-enriched sandy gravel geological condition. The method comprises the following steps of excavatingpile location hole downward in a to-be-constructed pile location and transferring a protecting casing down in the pile location hole along with an excavating depth till the pile location hole is excavated; transferring a sand preventing pipe which is closed at the bottom down in the protecting casing, wherein the sand preventing pipe penetrates the pile location hole; extracting the protecting casing upward till the protecting case is removed fully; transferring a spiral jet grouting pipe down in the sand preventing pipe to the bottom position of the sand preventing pipe; and spirally groutinghigh pressure air and slurry in the sand preventing pipe by means of a spiral jet grouting pipe, wherein the high pressure air and the slurry crush the wall of the sand preventing pipe and cuts a surrounding soil mass, and a stratum gap is filled with the slurry and the slurry is frozen and hardened to form a spiral jet grouting pile. The construction method of the spiral jet grouting waterproofcurtain in the water-enriched sandy gravel geological condition is more reliable, efficient and economical and practical.
本发明公开了一种富水砂卵石地质条件下旋喷止水帷幕施工方法，包括以下步骤：于待施工桩位处向下开挖桩位孔，且随着开挖深度于所述桩位孔内下放防护筒直至开挖完成；于所述防护筒内下放底部封闭的防砂管使所述防砂管贯通所述桩位孔；向上抽出所述防护筒至所述防护筒全部移除；于所述防砂管内下放旋喷管至所述防砂管底部位置；利用所述旋喷管于所述防砂管内旋喷高压空气和浆液，高压空气及浆液冲碎所述防砂管管壁并切削周围土体，使所述浆液填充地层空隙并凝结硬化形成旋喷桩。本发明在富水砂卵石地质条件下旋喷止水帷幕的施工方法更加可靠、高效、经济实用。
Construction method of spiral jet grouting waterproof curtain in water-enriched sandy gravel geological condition
富水砂卵石地质条件下旋喷止水帷幕施工方法
ZHANG XINCHAO (author) / YANG SEN (author) / CHEN BO (author) / WANG DAN (author) / ZHANG BO (author) / LEI HAILIN (author) / XU XIANG (author) / SUN YAN (author) / XIE HUAXIA (author)
2020-10-02
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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