Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Pressurized post-grouting device and process for dewatering well
The invention discloses a pressurized post-grouting device and process for a dewatering well, and the pressurized post-grouting device comprises a well pipe, the filter pipe section of the well pipe is located in an underground aquifer area, and the space between the filter pipe section and the aquifer is filled with a filter material; the first grouting pipe extends into the well casing from top to bottom, the lower end of the first grouting pipe is a grout outlet end, and the first grouting pipe is used for grouting for the first time and discharging grout in the well to form a first grouting body; the second grouting pipe extends into the well pipe from top to bottom, the lower end of the second grouting pipe is a grout outlet end, the grout outlet end of the second grouting pipe is located in the primary grouting body, secondary grout outlet in the primary grouting body forms a secondary grouting splitting channel communicated with the filter holes of the filter pipe section, and the secondary grouting splitting channel forms a high-pressure grouting channel. The grouting sealing cover body is formed in the well through primary grouting, then pores of the filter pipe, the well casing and the hole wall can be completely blocked through secondary pressurized grouting, and the risk of sudden gushing of the foundation pit at the dewatering well is reduced.
本发明公开了一种降水井的加压后注浆装置及工艺，包括：井管，其滤管段处于地下含水层区域，并在滤管段与含水层之间填充有滤料；至少一从上往下地延伸入井管之内的第一注浆管，其下端设为出浆端，其用于首次注浆并在井内出浆形成首次注浆体；至少一从上往下地延伸入井管之内的第二注浆管，其下端设为出浆端，第二注浆管的出浆端处于首次注浆体内，并在首次注浆体中二次出浆形成与滤管段的滤孔连通的二次注浆劈裂通道，二次注浆劈裂通道构成高压注浆通道。通过首次注浆在井内形成注浆封盖体，然后通过二次加压注浆能实现滤管、井管与孔壁的孔隙全面封堵，降低降水井处基坑突涌的风险。
Pressurized post-grouting device and process for dewatering well
The invention discloses a pressurized post-grouting device and process for a dewatering well, and the pressurized post-grouting device comprises a well pipe, the filter pipe section of the well pipe is located in an underground aquifer area, and the space between the filter pipe section and the aquifer is filled with a filter material; the first grouting pipe extends into the well casing from top to bottom, the lower end of the first grouting pipe is a grout outlet end, and the first grouting pipe is used for grouting for the first time and discharging grout in the well to form a first grouting body; the second grouting pipe extends into the well pipe from top to bottom, the lower end of the second grouting pipe is a grout outlet end, the grout outlet end of the second grouting pipe is located in the primary grouting body, secondary grout outlet in the primary grouting body forms a secondary grouting splitting channel communicated with the filter holes of the filter pipe section, and the secondary grouting splitting channel forms a high-pressure grouting channel. The grouting sealing cover body is formed in the well through primary grouting, then pores of the filter pipe, the well casing and the hole wall can be completely blocked through secondary pressurized grouting, and the risk of sudden gushing of the foundation pit at the dewatering well is reduced.
本发明公开了一种降水井的加压后注浆装置及工艺，包括：井管，其滤管段处于地下含水层区域，并在滤管段与含水层之间填充有滤料；至少一从上往下地延伸入井管之内的第一注浆管，其下端设为出浆端，其用于首次注浆并在井内出浆形成首次注浆体；至少一从上往下地延伸入井管之内的第二注浆管，其下端设为出浆端，第二注浆管的出浆端处于首次注浆体内，并在首次注浆体中二次出浆形成与滤管段的滤孔连通的二次注浆劈裂通道，二次注浆劈裂通道构成高压注浆通道。通过首次注浆在井内形成注浆封盖体，然后通过二次加压注浆能实现滤管、井管与孔壁的孔隙全面封堵，降低降水井处基坑突涌的风险。
Pressurized post-grouting device and process for dewatering well
一种降水井的加压后注浆装置及工艺
LIANG ZHENNING (Autor:in) / XIE FEI (Autor:in) / CAI YONGSHENG (Autor:in) / ZHANG JING (Autor:in) / MA RUI (Autor:in) / HUANG QI (Autor:in) / LIN JIE (Autor:in) / LING YUFENG (Autor:in) / ZHANG JIAJUN (Autor:in)
31.12.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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