Slurry retaining wall structure of seepage interception wall under special geological conditions

Abstract

The utility model relates to the technical field of cut-off wall structures, in particular to a slurry protection wall structure of a cut-off wall under special geological conditions, which comprises a groove, a cylinder, a bottom support plate, a sealing ring, a sealing layer and the cut-off wall. Before the seepage interception wall is poured, a cylinder is inserted into a groove to prevent sand from collapsing, then a bottom supporting plate is pressed downwards along the cylinder and makes extrusion contact with the bottom of the groove, underground water at the bottom of the groove is prevented from permeating to the position above the bottom supporting plate through arrangement of a sealing ring, and then part of slurry is poured to the position above the bottom supporting plate, so that the seepage interception wall is formed. According to the device, a sealing layer is formed, sealing is conducted, bottom underground water is thoroughly prevented from permeating to the position above the bottom supporting plate, then concrete is poured, the seepage interception wall is formed, the situation that the sand geology collapses when the concrete is poured can be prevented, and pouring of the seepage interception wall is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of cut-off wall structures, in particular to a mud wall protection structure of a cut-off wall under special geological conditions. Background Art

[0002] The underground cut-off wall is an underground continuous cut-off wall built by making holes or trenches in the soft foundation and pouring concrete. It plays an important role in ensuring the seepage stability of the loose permeable foundation and the safety of the dam. It is not only used in dams, cofferdams, sluices and dikes of water conservancy and hydropower projects, but also widely used in large-scale mine foundation pits, various tailings dams and industrial waste dumps and municipal engineering. The underground cut-off wall is an underground anti-seepage building built by using special machines to make holes in the loose permeable foundation of the dam and pouring concrete or cement clay mortar into the holes. The cut-off wall is built in sections. The existing cut-off wall is generally constructed by the method of grabbing grooves with a slotting machine.

[0003] However, when the grooving machine is grooving, the riverbed contains a lot of water and is mostly composed of gravel and sand, which can easily cause landslides, seriously affecting the quality of grooving and subsequent concrete pouring. Utility Model Content

[0004] The utility model aims to provide a mud wall protection structure for a seepage cut-off wall under special geological conditions, which solves the problem in the prior art that when a slotting machine is slotting, the riverbed has a very high water content and is mostly gravel and sandy soil, which easily causes landslides and seriously affects the slotting quality and subsequent concrete pouring.

[0005] To achieve the above-mentioned purpose, the utility model provides a mud wall protection structure of a seepage cut-off wall under special geological conditions, including a groove, a cylinder, a bottom support plate, a sealing ring, a sealing layer and a seepage cut-off wall, wherein the groove is arranged on the ground, the cylinder is arranged in the groove, the bottom support plate is slidably fitted with the cylinder, the bottom support plate is located at the inner bottom of the cylinder, the sealing ring is fixedly connected to the bottom support plate and is located at the upper end of the sealing ring, and the sealing ring contacts the inner wall of the cylinder, the sealing layer is arranged at the upper end of the bottom support plate, and the seepage cut-off wall is arranged inside the cylinder and is located at the upper end of the sealing layer.

[0006] Wherein, the mud wall protection structure of the cut-off wall under the special geological conditions further includes a cover plate, and the cover plate covers the upper end of the cylinder.

[0007] Among them, the mud wall protection structure of the seepage-cutting wall under special geological conditions also includes an insert ring, the cylinder has a groove, the insert ring is inserted in the groove, and the upper end of the insert ring is fixedly connected to the bottom of the cover plate.

[0008] Wherein, the mud wall protection structure of the cut-off wall under the special geological conditions further includes two insertion rods, and the two insertion rods are respectively fixedly connected to the cylinder and are respectively located at the bottom of the cylinder.

[0009] Among them, the mud wall protection structure of the cut-off wall under the special geological conditions also includes two bolts and two gaskets. The two bolts respectively penetrate the cover plate and are respectively located in the cylinder. The two gaskets are respectively sleeved on the corresponding bolts and are respectively located between the corresponding bolts and the cover plate.

[0010] The utility model discloses a mud wall protection structure of a seepage cut-off wall under special geological conditions. Before pouring the seepage cut-off wall, a cylinder is inserted into the groove to prevent sand and gravel from collapsing. Then the bottom support plate is pressed downward along the cylinder and is in extrusion contact with the bottom of the groove. The sealing ring is provided to prevent groundwater at the bottom of the groove from penetrating above the bottom support plate. Then part of the mud is poured above the bottom support plate to form the sealing layer, thereby sealing and completely preventing bottom groundwater from penetrating above the bottom support plate. Then concrete is poured to form the seepage cut-off wall. The device can prevent the sand geology from collapsing when pouring concrete, and is convenient for pouring the seepage cut-off wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0012] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model.

[0013] Figure 2 The utility model Figure 1 A magnified view of the local structure at A.

[0014] Figure 3 It is an overall structural diagram of the second embodiment of the utility model.

[0015] Figure 4 The utility model Figure 3 Enlarged view of the local structure at point B.

[0016] 101-groove, 102-cylinder, 103-bottom support plate, 104-sealing ring, 105-sealing layer, 106-cut-off wall, 107-cover plate, 108-insertion ring, 109-insertion rod, 110-groove, 201-bolt, 202-gasket. DETAILED DESCRIPTION

[0017] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0018] First embodiment:

[0019] See also Figure 1 and Figure 2 ,in, Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model. Figure 2 The utility model Figure 1 A magnified view of the local structure at A.

[0020] The utility model provides a mud wall protection structure of a seepage cutoff wall 106 under special geological conditions, comprising a groove 101, a cylinder 102, a bottom support plate 103, a sealing ring 104, a sealing layer 105, a seepage cutoff wall 106, a cover plate 107, an insert ring 108 and two insert rods 109, wherein the cylinder 102 has a groove 110.

[0021] According to this specific embodiment, before pouring the cut-off wall 106, the cylinder 102 is inserted into the groove 101 to prevent sand and gravel from collapsing, and then the bottom support plate 103 is pressed downward along the cylinder 102 and is in extrusion contact with the bottom of the groove 101, and the sealing ring 104 is set to prevent the groundwater at the bottom of the groove 101 from penetrating to the top of the bottom support plate 103, and then part of the mud is poured on the top of the bottom support plate 103 to form the sealing layer 105, so as to seal and completely prevent the bottom groundwater from penetrating to the top of the bottom support plate 103, and then concrete is poured to form the cut-off wall 106. , thus the device can prevent landslides in sandy soil when pouring concrete, and facilitates the pouring of the cut-off wall 106. After the pouring of the cut-off wall 106 is completed, the cover plate 107 is covered on the upper end of the cylinder 102 to provide sealing protection. After the cover plate 107 is covered, the groove 110 and the insert ring 108 cooperate to make the cover plate 107 cover more firmly. The two insert rods 109 are provided to improve the stability of the cylinder 102, so that when the cylinder 102 is set in the groove 101, it will not be tilted or offset due to landslides, which is not conducive to the subsequent pouring of the cut-off wall 106.

[0022] The groove 101 is arranged on the ground, the cylinder 102 is arranged in the groove 101, the bottom support plate 103 is slidably fitted with the cylinder 102, the bottom support plate 103 is located at the inner bottom of the cylinder 102, the sealing ring 104 is fixedly connected to the bottom support plate 103 and is located at the upper end of the sealing ring 104, and the sealing ring 104 is in contact with the inner wall of the cylinder 102, the sealing layer 105 is arranged at the upper end of the bottom support plate 103, and the cut-off wall 106 is arranged inside the cylinder 102 and is located at the upper end of the sealing layer 105. Before pouring the cut-off wall 106, the cylinder 102 is inserted into the groove 101 to prevent sand and gravel from collapsing, and then the bottom support plate 103 is pressed downward along the cylinder 102 and squeezed into contact with the bottom of the groove 101. The sealing ring 104 is provided to prevent groundwater at the bottom of the groove 101 from penetrating to the top of the bottom support plate 103, and then part of the mud is poured onto the top of the bottom support plate 103 to form the sealing layer 105, thereby sealing and completely preventing bottom groundwater from penetrating to the top of the bottom support plate 103, and then concrete is poured to form the cut-off wall 106. The device can prevent the collapse of sandy soil when pouring concrete, and facilitates the pouring of the cut-off wall 106.

[0023] Secondly, the cover plate 107 covers the upper end of the cylinder 102. After the cut-off wall 106 is cast, the cover plate 107 covers the upper end of the cylinder 102 for sealing protection.

[0024] Meanwhile, the cylinder 102 has a groove 110, the insert ring 108 is inserted into the groove 110, and the upper end of the insert ring 108 is fixedly connected to the bottom of the cover plate 107. When the cover plate 107 is closed, the groove 110 and the insert ring 108 cooperate to make the cover plate 107 more stable.

[0025] In addition, the two insertion rods 109 are respectively fixedly connected to the cylinder 102 and are respectively located at the bottom of the cylinder 102. The two insertion rods 109 are provided to improve the stability of the cylinder 102, so that when the cylinder 102 is arranged in the groove 101, it will not be tilted or offset due to landslides, which is not conducive to the subsequent pouring of the cut-off wall 106.

[0026] When using the mud wall protection structure of the cut-off wall 106 under special geological conditions of the utility model, before pouring the cut-off wall 106, the cylinder 102 is inserted into the groove 101 to prevent sand and gravel from collapsing, and then the bottom support plate 103 is pressed downward along the cylinder 102 and is in extrusion contact with the bottom of the groove 101, and the sealing ring 104 is set to prevent the groundwater at the bottom of the groove 101 from penetrating to the top of the bottom support plate 103, and then part of the mud is poured to the top of the bottom support plate 103 to form the sealing layer 105, so as to seal and completely prevent the bottom groundwater from penetrating to the top of the bottom support plate 103, and then concrete is poured, so as to The cut-off wall 106 is formed, so that the device can prevent landslides in sandy soil when pouring concrete, and is convenient for pouring the cut-off wall 106. After the cut-off wall 106 is poured, the cover plate 107 is covered on the upper end of the cylinder 102 to provide sealing protection. When the cover plate 107 is covered, the groove 110 and the insert ring 108 cooperate to make the cover plate 107 more stable. The two insert rods 109 are provided to improve the stability of the cylinder 102, so that when the cylinder 102 is set in the groove 101, it will not be tilted or offset due to landslides, which is not conducive to the subsequent pouring of the cut-off wall 106.

[0027] Second embodiment:

[0028] Based on the first embodiment, please refer to Figure 3 and Figure 4 ,in, Figure 3 It is a schematic diagram of the overall structure of the second embodiment of the utility model. Figure 4 The utility model Figure 3 Enlarged view of the local structure at point B.

[0029] The utility model provides a mud wall protection structure of a cut-off wall 106 under special geological conditions, which also includes two bolts 201 and two gaskets 202 .

[0030] According to this specific embodiment, after the cover plate 107 is closed, the cover plate 107 is fixed by the provision of the two bolts 201 , and the corresponding bolts 201 are prevented from loosening by the provision of the two gaskets 202 .

[0031] The two bolts 201 penetrate the cover plate 107 respectively and are located in the cylinder 102 respectively. The two washers 202 are respectively sleeved on the corresponding bolts 201 and are located between the corresponding bolts 201 and the cover plate 107. When the cover plate 107 is closed, the cover plate 107 is fixed by the two bolts 201, and the two washers 202 are used to prevent the corresponding bolts 201 from loosening.

[0032] When using the mud wall protection structure of the cut-off wall 106 under special geological conditions of the utility model, after the cover plate 107 is covered, the cover plate 107 is fixed by the setting of the two bolts 201, and the corresponding bolts 201 are prevented from loosening by the setting of the two gaskets 202.

[0033] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A mud wall protection structure for a seepage cut-off wall under special geological conditions, characterized in that: It includes a groove, a cylinder, a bottom support plate, a sealing ring, a sealing layer and a cut-off wall; The groove is set on the ground, the cylinder is set in the groove, the bottom support plate is slidably adapted to the cylinder, the bottom support plate is located at the inner bottom of the cylinder, the sealing ring is fixedly connected to the bottom support plate and is located at the upper end of the sealing ring, and the sealing ring contacts the inner wall of the cylinder, the sealing layer is set at the upper end of the bottom support plate, and the cut-off wall is set inside the cylinder and is located at the upper end of the sealing layer.

2. The slurry wall protection structure of the cut-off wall under special geological conditions as claimed in claim 1, characterized in that: The mud wall protection structure of the cut-off wall under special geological conditions also includes a cover plate, and the cover plate covers the upper end of the cylinder.

3. The slurry wall protection structure of the cut-off wall under special geological conditions as claimed in claim 2, characterized in that: The mud wall protection structure of the seepage cut-off wall under special geological conditions also includes an insert ring. The cylinder is provided with a groove, and the insert ring is inserted into the groove. The upper end of the insert ring is fixedly connected to the bottom of the cover plate.

4. The slurry wall protection structure of the cut-off wall under special geological conditions as claimed in claim 3, characterized in that: The mud wall protection structure of the cut-off wall under special geological conditions also includes two insertion rods, which are fixedly connected to the cylinder respectively and are located at the bottom of the cylinder respectively.

5. The slurry wall protection structure of the cut-off wall under special geological conditions as claimed in claim 4, characterized in that: The mud wall protection structure of the cut-off wall under special geological conditions also includes two bolts and two gaskets. The two bolts respectively penetrate the cover plate and are respectively located in the cylinder. The two gaskets are respectively sleeved on the corresponding bolts and are respectively located between the corresponding bolts and the cover plate.

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