CN-224216246-U - Underground diaphragm wall seam position seepage pre-buried detection structure

CN224216246UCN 224216246 UCN224216246 UCN 224216246UCN-224216246-U

Abstract

The utility model relates to the technical field of underground diaphragm walls, and discloses an underground diaphragm wall seam position leakage pre-embedding detection structure which comprises sleeve valve pipes pre-embedded in an underground diaphragm wall, wherein the underground diaphragm wall comprises a plurality of wall sections which are in butt joint in sequence, seam positions are formed between adjacent wall sections, the sleeve valve pipes are pre-embedded in the seam positions, the sleeve valve pipes are provided with grouting heads connected with grouting pumps and water pressure sensors, and the grouting heads are exposed at the tops of the wall sections. Through pre-buried sleeve valve pipe in underground diaphragm wall seam position to be equipped with slip casting head and water pressure sensor, not only can show the expansion detection scope, can utilize the sleeve valve pipe to carry out the water pressure test in order to judge whether there is the seepage in seam position afterwards, thereby improve the detection precision, realize the construction and the organic combination of detection, provide more reliable technical guarantee for the construction and the use of underground diaphragm wall.

Inventors

YANG CHEN
MA CHI
HU YUNLONG
Liu Xuangu
LANG XIANGWEI
LIU YIMING
GUO YALEI
LI QI

Assignees

铁科院(深圳)研究设计院有限公司
中国铁道科学研究院集团有限公司

Dates

Publication Date: 20260508
Application Date: 20250521

Claims (10)

1. The underground diaphragm wall seam position leakage pre-embedding detection structure is characterized by comprising sleeve valve pipes pre-embedded in an underground diaphragm wall, wherein the underground diaphragm wall comprises a plurality of wall sections which are in butt joint in sequence, a seam position is formed between every two adjacent wall sections, the sleeve valve pipes are pre-embedded in the seam position, the sleeve valve pipes are provided with grouting heads connected with grouting pumps and water pressure sensors, and the grouting heads are exposed at the tops of the wall sections.
2. A underground diaphragm wall joint position leakage pre-buried detection structure according to claim 1, wherein a reinforcement cage is provided in the wall section, the reinforcement cage having an end section along to the joint position, the sleeve being inserted in the end section.
3. The underground diaphragm wall joint leakage pre-buried detection structure according to claim 2, wherein the sleeve valve pipe is fixedly connected with the end section.
4. The underground diaphragm wall joint leakage pre-buried detection structure according to claim 2, wherein the end section has a bending position, and the sleeve valve tube is inserted into the bending position and fixedly connected with the bending position.
5. The underground diaphragm wall joint leakage pre-buried detection structure according to claim 4, wherein the two ends of the end section are respectively formed with the bending positions, and sleeve valve tubes are respectively inserted into the two bending positions.
6. The underground diaphragm wall joint leakage pre-buried detection structure according to claim 4, wherein the reinforcement cage comprises a plurality of longitudinal ribs arranged longitudinally and transverse ribs arranged transversely, a plurality of the longitudinal ribs are arranged circumferentially at intervals and are respectively connected with the transverse ribs, and the end parts of the transverse ribs are arranged in the joint positions to form the end sections.
7. The underground diaphragm wall joint leakage pre-buried detection structure according to claim 6, wherein the end portions of the transverse ribs are bent and extended to form the bending positions.
8. The underground diaphragm wall joint leakage pre-buried detection structure according to claim 1 or 2, wherein the joint is provided with I-steel, a middle plate is arranged in the middle of the I-steel, end plates are respectively arranged at two ends of the middle plate, side areas are formed by surrounding the end plates and the middle plate, the two sides of the I-steel are respectively provided with the side areas, the I-steel is arranged in the joint, and the two sides of the end plates are respectively correspondingly extended into adjacent wall sections.
9. The underground diaphragm wall joint-location leakage pre-buried detection structure according to claim 8, wherein the end section is embedded in a side region, and the sleeve valve tube is placed in the side region.
10. The underground diaphragm wall joint leakage pre-buried detection structure according to any one of claims 1 to 5, wherein the sleeve valve pipe comprises a valve pipe, the valve pipe is provided with an outer grouting section, the outer grouting section is provided with a one-way valve for unidirectional grouting outwards, the valve pipe is internally provided with a grouting core pipe, the grouting core pipe is provided with an inner grouting section, and the inner grouting section is aligned with the outer grouting section; The inner grouting section is provided with a grouting opening, a grouting space is formed between the inner grouting section and the outer grouting section, a plurality of sealing rings are arranged on the grouting core pipe, and are respectively positioned at the end parts of the grouting space to seal the end parts of the grouting space; In the grouting process of the sleeve valve pipe, the slurry in the grouting core pipe enters a grouting space through a grouting opening, and the slurry in the grouting space is sprayed out through a one-way valve to perform grouting.

Description

Underground diaphragm wall seam position seepage pre-buried detection structure Technical Field The utility model relates to the technical field of underground continuous walls, in particular to a leakage pre-buried detection structure for joint positions of underground continuous walls. Background The underground diaphragm wall is used as an important deep foundation pit supporting structure, has multiple functions of bearing, soil retaining, water interception, seepage prevention and the like, and the quality of the underground diaphragm wall is directly related to the safety and stability of a foundation pit. However, the problem of leak detection at the joint locations during construction and use of underground diaphragm walls has been one of the challenges facing the engineering community. In the prior art, the detection methods such as the traditional drilling coring method, the sound wave transmission method, the ultrasonic method and the like are often limited to a local area due to the need of drilling holes or embedding test tubes in a wall body, the whole joint position cannot be comprehensively detected, and hidden leakage hazards are easily omitted; In addition, the resistivity method, the manual detection method and the like are greatly influenced by geological conditions, human factors and the like, the detection precision is low, and the specific position and the range of leakage are difficult to accurately judge. Disclosure of utility model The utility model aims to provide an underground diaphragm wall joint position leakage pre-buried detection structure, and aims to solve the problem that in the prior art, the joint position leakage detection range is limited. The utility model discloses a leakage pre-embedding detection structure for a joint position of an underground diaphragm wall, which is realized by the structure and is characterized by comprising sleeve valve pipes pre-embedded in the underground diaphragm wall, wherein the underground diaphragm wall comprises a plurality of wall sections which are in butt joint in sequence, the joint position is formed between every two adjacent wall sections, the sleeve valve pipes are pre-embedded in the joint position, the sleeve valve pipes are provided with grouting heads connected with grouting pumps and water pressure sensors, and the grouting heads are exposed at the tops of the wall sections. Further, a reinforcement cage is provided in the wall section, the reinforcement cage having an end section along the joint, and the sleeve valve tube being inserted in the end section. Further, the sleeve valve tube is fixedly connected with the end section. Further, the end section is provided with a bending position, and the sleeve valve tube is inserted into the bending position and fixedly connected with the bending position. Further, the two ends of the end section are respectively provided with the bending positions, and sleeve valve tubes are respectively inserted into the two bending positions. Further, the reinforcement cage comprises a plurality of longitudinal ribs and transverse ribs, wherein the longitudinal ribs are longitudinally arranged, the transverse ribs are transversely arranged, the longitudinal ribs are circumferentially arranged at intervals and are respectively connected with the transverse ribs, and the end parts of the transverse ribs are arranged in joint positions to form the end sections. Further, the end parts of the transverse ribs are bent and extended to form the bending positions. Furthermore, the joint position is provided with I-steel, the middle part of the I-steel is provided with a middle plate, two ends of the middle plate are respectively provided with an end plate, a side part area is formed by enclosing between the end plates and the middle plate, two sides of the I-steel are respectively provided with the side part area, the I-steel is arranged in the joint position, and two sides of the end plates respectively extend into adjacent wall sections correspondingly. Further, the end section is embedded in a side region, and the sleeve valve tube is placed in the side region. Further, the sleeve valve pipe comprises a valve pipe, wherein the valve pipe is provided with an outer grouting section, and a one-way valve for unidirectional grouting outwards is arranged on the outer grouting section; The inner grouting section is provided with a grouting opening, a grouting space is formed between the inner grouting section and the outer grouting section, a plurality of sealing rings are arranged on the grouting core pipe, and are respectively positioned at the end parts of the grouting space to seal the end parts of the grouting space; In the grouting process of the sleeve valve pipe, the slurry in the grouting core pipe enters a grouting space through a grouting opening, and the slurry in the grouting space is sprayed out through a one-way valve to perform grouting. Compared with the prior art, the leakage pre-bur