Cement soil diaphragm wall

Abstract

The utility model relates to the technical field of hydraulic engineering, and discloses a cemented soil diaphragm wall, which comprises a first cement column group and a second cement column, the sections of the first cement column group and the second cement column are cut, the first cement column group comprises a plurality of first cement columns, the sections of the first cement columns are cut, and the diameter of the first cement columns is smaller than that of the second cement columns. The connecting plate is arranged in the vertical direction, and the two sides of the connecting plate are embedded in the first cement column and the second cement column which are adjacently arranged respectively. Before the first cement column and the second cement column are initially set, connecting plates are installed, it is guaranteed that the two sides of each connecting plate are embedded into the adjacent first cement column and the second cement column correspondingly, and after the first cement column and the second cement column are solidified, the connecting plates are fixed into the adjacent first cement column and the second cement column correspondingly; the connecting strength between the first cement column group and the second cement column group is enhanced through the connecting plate, and the possibility of generating cracks between the first cement column group and the second cement column group is reduced, so that the anti-seepage effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy projects, in particular to a cement soil anti-seepage wall. Background Art

[0002] The anti-seepage wall is a wall-shaped anti-seepage structure built by continuously making holes in a loose and permeable foundation, consolidating the walls with mud, and pouring cement soil into the holes.

[0003] The multi-head small-diameter deep mixing pile anti-seepage wall technology uses cement slurry as a curing agent. The cement slurry is sprayed into the soil layer through a multi-head small-diameter deep mixing pile machine, and the drill bit is stirred at the same time. A series of physical and chemical reactions between the curing agent, soil and water are used to harden the cement soil into a cement soil anti-seepage wall with good integrity, stability, impermeability, and a certain strength.

[0004] The patent with publication number CN113756285A discloses a cement soil anti-seepage wall and a construction method thereof. The anti-seepage wall adopts an anti-seepage curtain with a first cement column and a second cement column arranged at intervals. During construction, after the construction of the first cement column is completed, the second cement column is constructed after a period of time. Since the first cement column and the second cement column are not condensed synchronously, after the construction is completed, the first cement column and the second cement column are prone to be unreliably connected, resulting in cracks between the two, which leads to a weakening of the anti-seepage effect.

[0005] In view of this, how to change the current situation of poor anti-seepage effect at the connection points of adjacent different piles after the construction of multi-head small-diameter deep mixing pile anti-seepage wall has become a technical problem that technical personnel in this field need to solve urgently. Utility Model Content

[0006] The utility model aims to provide a cement soil anti-seepage wall to overcome the above-mentioned shortcomings.

[0007] In order to achieve the above purpose, the technical solution of the utility model is:

[0008] A cement soil anti-seepage wall comprises a first cement column group and a second cement column which are intersected in cross section and arranged alternately in sequence, wherein the first cement column group comprises a plurality of first cement columns which are intersected in cross section, wherein the diameter of the first cement column is smaller than the diameter of the second cement column, and further comprises a connecting plate which is arranged in a vertical direction, wherein both sides of the connecting plate are respectively embedded in the first cement column and the second cement column which are arranged adjacently.

[0009] Furthermore, the connecting plate includes a supporting steel plate and two perforated steel plates vertically fixedly connected on both sides of the supporting steel plate. The supporting steel plate and the perforated steel plate are both arranged in the vertical direction, and the two perforated steel plates located on both sides of the supporting steel plate are respectively embedded and fixed in the first cement column and the second cement column.

[0010] Furthermore, the perforated steel plate is provided with a plurality of elliptical openings, and the plurality of elliptical openings are arranged at intervals along the vertical direction.

[0011] Furthermore, the major axis of the elliptical opening is arranged along the vertical direction.

[0012] Furthermore, the perforated steel plate is provided with a plurality of circular openings, and the plurality of circular openings are arranged at intervals along the vertical direction.

[0013] Furthermore, the connecting plate includes a supporting steel plate and two extension steel plates vertically fixedly connected on both sides of the supporting steel plate. The supporting steel plate and the extension steel plate are both arranged in the vertical direction, and the two extension steel plates located on both sides of the supporting steel plate are respectively embedded and fixed in the first cement column and the second cement column.

[0014] Furthermore, the extended steel plate is fixedly connected with a plurality of welding studs at intervals along the vertical direction.

[0015] Furthermore, the first cement column group includes five first cement columns whose cross sections are intersected with each other.

[0016] Compared with the prior art, the utility model has at least the following advantages:

[0017] In the utility model, an embedded connecting plate is constructed before the first cement column and the second cement column initially set, and the two sides of the connecting plate are respectively embedded in the adjacent first cement column and the second cement column. The connecting plate enhances the connection strength between the first cement column group and the second cement column, reduces the possibility of cracks between the two, and thus improves the anti-seepage effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 This is a schematic diagram of the overall structure of a cement soil anti-seepage wall in Example 1 of the utility model;

[0020] Figure 2 A cross-sectional view of a cement soil anti-seepage wall according to Embodiment 1 of the present utility model;

[0021] Figure 3 This is an assembly diagram of the support steel plate and the perforated steel plate in the first embodiment of the utility model;

[0022] Figure 4This is an assembly diagram of the support steel plate, extension steel plate and welding pins in the third embodiment of the present utility model.

[0023] Figure numerals: 1. first cement column; 2. second cement column; 3. supporting steel plate; 4. perforated steel plate; 5. extension steel plate; 6. welding nails; 7. soil layer. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] Embodiment 1:

[0027] Reference Figure 1-3 The utility model provides a cement soil anti-seepage wall, which is arranged in a soil layer 7 with anti-seepage requirements. The specific structure includes a first cement column group, a second cement column 2 and a connecting plate. The first cement column group and the second cement column 2 are intersected in cross section and are arranged alternately in sequence. The first cement column group includes a plurality of first cement columns 1 arranged with intersected cross sections. The diameter of the first cement column 1 is smaller than the diameter of the second cement column 2. The connecting plate is arranged between two adjacent first cement columns 1 and second cement columns 2. Both sides of the connecting plate are respectively embedded in the adjacent first cement columns 1 and second cement columns 2, so as to achieve a tight connection between the first cement columns 1 and the second cement columns 2.

[0028] The construction method of the above-mentioned cement soil anti-seepage wall refers to the following steps:

[0029] The first step is to use a measuring ruler to measure above the soil layer 7 next to the dam and mark it with lime powder; the second step is to use an engineering hole-opening machine to mix, spray, and sink the positioning columns of the first cement column group using cement-soil mixing piles, and then mix, lift and spray to obtain the first cement column group; the third step is to construct the second cement column 2 between the adjacent first cement column groups before the first cement column 1 begins to set, until the cement-soil mixing construction is completed; the fourth step is to insert a connecting plate before the adjacent first cement column 1 and second cement column 2 begin to set, so that the two sides of the connecting plate are respectively embedded in the adjacent first cement column 1 and second cement column 2.

[0030] Before the first cement column 1 and the second cement column 2 initially set, the connecting plate is installed and ensured that the two sides of the connecting plate are respectively embedded in the adjacent first cement column 1 and the second cement column 2. After the first cement column 1 and the second cement column 2 solidify, the connecting plate is respectively fixed in the adjacent first cement column 1 and the second cement column 2. The connecting plate enhances the connection strength between the first cement column group and the second cement column 2, reduces the possibility of cracks between the two, and thus improves the anti-seepage effect.

[0031] Preferably, the connecting plate includes a supporting steel plate 3 and two perforated steel plates 4 vertically fixedly connected to both sides of the supporting steel plate 3. The supporting steel plate 3 and the perforated steel plate 4 are fixed by welding. The supporting steel plate 3 and the perforated steel plate 4 are both arranged in the vertical direction. The two perforated steel plates 4 located on both sides of the supporting steel plate 3 are respectively embedded and fixed in the first cement column 1 and the second cement column 2. The perforated steel plates 4 are respectively embedded and fixed in the first cement column 1 and the second cement column 2. A clamping effect is formed between the perforated steel plates 4 and the cement soil, and the perforated steel plates 4 can be locked in the first cement column 1 or the second cement column 2, respectively, so that the first cement column 1 and the second cement column 2 form a whole, and the effect of coordinated anti-seepage is achieved.

[0032] In the utility model, a plurality of elliptical openings are arranged on the perforated steel plate 4, and the plurality of elliptical openings are arranged at intervals in the vertical direction. The major axis of the elliptical opening is arranged in the vertical direction. When the anti-seepage wall is acted upon by external forces, such as man-made or natural external forces such as vehicle vibration, the shock waves are mostly in the vertical direction, and the shock waves in the vertical direction will be conducted along the supporting steel plate 3 and the perforated steel plate 4. If the major axis of the elliptical opening is arranged in the vertical direction, most of the circumference of the opening can be parallel to the length direction of the opening, which is conducive to the rapid conduction of the force flow in the vertical direction and reduces the influence of the shock waves in the vertical direction on the anti-seepage wall.

[0033] Preferably, the first cement column group includes five first cement columns 1 arranged with their cross sections cut off from each other. The first cement column group is constructed by one-time construction of five small-diameter mixing piles.

[0034] Embodiment 2:

[0035] The difference between this embodiment and the first embodiment is that the shapes of the holes on the perforated steel plate 4 are different. Specifically, the perforated steel plate 4 is provided with a plurality of circular holes (not shown in the figure), and the plurality of circular holes are arranged at intervals in the vertical direction.

[0036] Embodiment three:

[0037] The difference between this embodiment and the first embodiment is that the structure of the connecting plate is different. Figure 4The connecting plate includes a supporting steel plate 3 and two extending steel plates 5 vertically fixedly connected on both sides of the supporting steel plate 3. The supporting steel plate 3 and the extending steel plate 5 are both arranged in the vertical direction. The two extending steel plates 5 located on both sides of the supporting steel plate 3 are respectively embedded and fixed in the first cement column 1 and the second cement column 2.

[0038] Preferably, the extended steel plate 5 is fixedly connected with a plurality of welding studs 6 at intervals along the vertical direction.

[0039] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A cement soil anti-seepage wall, comprising a first cement column group and a second cement column (2) which are intersecting in cross section and arranged alternately in sequence, wherein the first cement column group comprises a plurality of first cement columns (1) which are intersecting in cross section, the diameter of the first cement column (1) being smaller than the diameter of the second cement column (2), characterized in that: It also comprises a connecting plate arranged in the vertical direction, and two sides of the connecting plate are respectively embedded in the first cement column (1) and the second cement column (2) arranged adjacently.

2. The cement soil anti-seepage wall according to claim 1, characterized in that: The connecting plate comprises a supporting steel plate (3) and two perforated steel plates (4) vertically fixedly connected to both sides of the supporting steel plate (3); the supporting steel plate (3) and the perforated steel plates (4) are both arranged in a vertical direction; the two perforated steel plates (4) located on both sides of the supporting steel plate (3) are respectively embedded and fixed in the first cement column (1) and the second cement column (2).

3. The cement soil anti-seepage wall according to claim 2, characterized in that: The perforated steel plate (4) is provided with a plurality of elliptical openings, and the plurality of elliptical openings are arranged at intervals along the vertical direction.

4. The cement soil anti-seepage wall according to claim 3, characterized in that: The major axis of the elliptical opening is arranged along the vertical direction.

5. The cement soil anti-seepage wall according to claim 2, characterized in that: The perforated steel plate (4) is provided with a plurality of circular openings, and the plurality of circular openings are arranged at intervals along the vertical direction.

6. The cement soil anti-seepage wall according to claim 1, characterized in that: The connecting plate comprises a supporting steel plate (3) and two extending steel plates (5) vertically fixedly connected to both sides of the supporting steel plate (3); the supporting steel plate (3) and the extending steel plates (5) are both arranged in a vertical direction; the two extending steel plates (5) located on both sides of the supporting steel plate (3) are respectively embedded and fixed in the first cement column (1) and the second cement column (2).

7. The cement soil anti-seepage wall according to claim 6, characterized in that: The extended steel plate (5) is fixedly connected with a plurality of welding nails (6) at intervals along the vertical direction.

8. The cement soil cut-off wall according to any one of claims 1 to 7, characterized in that: The first cement column group comprises five first cement columns (1) which are arranged with their cross sections cut off from each other.

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