A landfill mortise and tenon type liner fixing device

Abstract

A mortise and tenon joint type liner fixing device for landfills is disclosed. The device includes a base anchor block, an auxiliary anchor block, a bolt, and a limiting pile. The limiting pile is inserted into the underlying foundation through pre-drilled limiting pile holes. The base anchor block has a tenon (A), a mortise (B), and a semi-circular lower groove (C), while the auxiliary anchor block has a mortise (A), a tenon (B), and a semi-circular upper groove (C). The liner is laid from the slope to the joint between the base and auxiliary anchor blocks, positioned between the bolt and the semi-circular lower groove (C). This mortise and tenon joint type liner fixing device for landfills improves upon the problems of long construction periods and difficult maintenance and reinforcement associated with traditional concrete pouring fixing methods. While fixing the liner, it maintains the integrity of the liner, preventing leakage.

Description

Technical Field

[0001] The invention belongs to the technical field of environmental geotechnical engineering, and in particular relates to a mortise and tenon type liner fixing device for a landfill. Background Art

[0002] In urban sanitary landfills, a liner system must be set up to prevent leachate from seeping into the ground and causing groundwater pollution. The liner layer includes geomembrane and geotextile. Geomembrane is a flexible and waterproof geosynthetic material with a high anti-seepage coefficient and good chemical stability. It can resist the corrosion of strong acids, alkalis, and oils. It is a good anti-corrosion material with good heat resistance and cold resistance and a long service life. The function of geotextile is to protect the geomembrane and prevent it from being punctured by hard objects.

[0003] During the landfill process, the continuous accumulation and compression of garbage and the action of landfill vehicles will form tension in the cushion layer. In order to prevent the cushion layer from shifting and deforming too much, it is generally fixed at the top of the slope or the platform of the segmented slope. In order to prevent the anti-seepage function of the cushion layer from being damaged, rivets and other penetration methods cannot be used for fixing except at the edge. At present, the fixing method in the form of concrete pouring is widely used in urban domestic waste landfills. Generally, a rectangular trench is excavated first, and the cushion layer is poured and fixed in the trench with cement concrete. This traditional concrete pouring fixing method requires reinforcement of the side walls and bottom surface of the trench during construction, which requires a large amount of work. The concrete on the cushion layer needs to be cured, and the construction period is long. In addition, if the cushion layer under the concrete is damaged, the repair and reinforcement requires the removal of the concrete pouring body, which requires a large amount of work. Summary of the invention

[0004] In order to solve the above technical problems, the present invention proposes a landfill mortise and tenon type liner fixing device, which adopts an assembled structure and can improve the problems of the traditional concrete pouring fixing method such as long construction period and difficult maintenance and reinforcement.

[0005] The technical solution adopted by the present invention is as follows: a landfill mortise and tenon type cushion layer fixing device, including a cushion layer, the device includes a base anchor block, an auxiliary anchor block, a bolt rod, and a limit pile, the base anchor block is provided with a reserved limit pile hole, the limit pile is inserted into the lower foundation through the reserved limit pile hole, and the top of the limit pile is flush with the top surface of the base anchor block; the base anchor block is provided with an A tenon, a B mortise and a C semicircular lower groove, and the auxiliary anchor block is provided with an A mortise, a B tenon and a C semicircular upper groove; the A tenon and B tenon head have an arc radius of 50mm, the A mortise and B mortise inner arc radius is 65mm, the C semicircular lower groove radius is 95mm, and the C semicircular upper groove radius is 80mm; after the base anchor block is butt-jointed with the auxiliary anchor block, the A tenon matches the A mortise, The B tenon matches the B mortise, and the C semicircle lower groove and the C semicircle upper groove together form a bolt hole, in which a bolt rod is arranged, and the bolt rod radius is 78 mm; the lining layer is composed of a protective geotextile and an impermeable membrane, and the impermeable membrane is placed between the upper and lower layers of the protective geotextile. The lining layer is laid from the slope to the joint between the base anchor block and the auxiliary anchor block, and the lining layer is placed between the bolt rod and the C semicircle lower groove.

[0006] Furthermore, the base anchor block and the auxiliary anchor block are made of reinforced concrete material, the segment length is 2000 mm, the height is 600 mm, the bottom surface of the base anchor block and the top surface of the auxiliary anchor block are both 1000 mm wide, and the top corners of the base anchor block (5) and the bottom corners of the auxiliary anchor block (6) are provided with arc chamfers.

[0007] Furthermore, the bolt rod is made of reinforced concrete material, and the segment length is 2000 mm.

[0008] Furthermore, the limit pile has a square cross-section and a conical bottom. The pile length is 1200 mm. The reserved limit pile hole has a square cross-section and a side length of 110 mm. Two limit piles are arranged in each segment with an internal spacing of 1090 mm. The gap between the reserved limit pile hole and the limit pile is filled with bonding material.

[0009] The advantages and effects of the present invention are:

[0010] The landfill mortise and tenon type liner fixing device proposed by the present invention can be prefabricated in a factory, assembled on site, and the components are standardized, which can improve work efficiency and shorten construction period. It can improve the problems of the traditional concrete pouring fixing form, such as long construction period and difficulty in maintenance and reinforcement. While fixing the liner, the integrity of the liner can be maintained to avoid leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is an overall cross-sectional view of the present invention;

[0012] Figure 2 It is the side view of the base anchor block;

[0013] Figure 3 This is the side view of the auxiliary anchor block;

[0014] Figure 4 It is the front view of the base anchor block;

[0015] Figure 5 It is the cross-section of bolt rod;

[0016] Figure 6 This is the front view of the limit pile.

[0017] In the figure: 1 is the slope, 2 is the cushion layer, 3 is the protective geotextile, 4 is the anti-seepage membrane, 5 is the base anchor block, 5-1 is the tenon A, 5-2 is the mortise B, 5-3 is the lower semicircle groove C, 5-4 is the reserved limit pile hole, 6 is the auxiliary anchor block, 6-1 is the mortise A, 6-2 is the tenon B, 6-3 is the upper semicircle groove C, 7 is the bolt rod, and 8 is the limit pile. DETAILED DESCRIPTION

[0018] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments.

[0019] like Figure 1 As shown, the present invention is a mortise and tenon type liner fixing device for landfills, which is composed of limit piles 8, base anchor blocks 5, auxiliary anchor blocks 6, and bolt rods 7. A liner 2 is set on the slope 1 of the landfill, and the liner 2 is specifically composed of a protective geotextile 3 and an impermeable membrane 4; the base anchor block 5 is provided with a reserved limit pile hole 5-4, and the limit pile 8 is inserted into the lower foundation through the reserved limit pile hole 5-4, and the top of the limit pile 8 is flush with the top surface of the base anchor block 5, fixing the base anchor block 5 on the foundation. Figure 2 As shown, the base anchor block 5 is provided with a tenon 5-1 A, a mortise 5-2 B and a semicircular lower groove 5-3 C; Figure 3As shown, the auxiliary anchor block 6 is provided with an A mortise 6-1, a B tenon 6-2 and a C semicircular upper groove 6-3. The head arc radius of the A tenon 5-1 and the B tenon 6-2 is 50 mm, the inner arc radius of the A mortise 6-1 and the B mortise 5-2 is 65 mm, the radius of the C semicircular lower groove 5-3 is 95 mm, the radius of the C semicircular upper groove 6-3 is 80 mm, and the radius of the C semicircular lower groove 5-3 is greater than the radius of the C semicircular upper groove 6-3, providing space for the cushion layer 2. The cross-section of the base anchor block 5 and the auxiliary anchor block 6 is L-shaped and becomes rectangular after being spliced ​​together. An inwardly recessed B mortise 5-2 is arranged at the L-shaped inner corner of the base anchor block 5, and an outwardly protruding A tenon 5-1 is arranged at its tail end. An inwardly recessed A mortise 6-1 is arranged at the L-shaped inner corner of the auxiliary anchor block 6, and an outwardly protruding B tenon 6-2 is arranged at the L-shaped tail. An inwardly facing C semicircular lower groove 5-3 and a C semicircular upper groove 6-3 are arranged in the middle of the joint between the base anchor block 5 and the auxiliary anchor block 6, and the cushion layer 2 is squeezed between the base anchor block 5 and the auxiliary anchor block 6; the A tenon 5-1 corresponds to the A mortise 6-1, and the cushion layer 2 is located between the two; the B tenon 6-2 corresponds to the B mortise 5-2, and the cushion layer 2 is located between the two. The bolt rod 7 is inserted into the bolt hole formed by the C-semicircle lower groove 5-3 and the C-semicircle upper groove 6-3, and the cushion layer 2 is squeezed between the bolt rod 7 and the C-semicircle lower groove 5-3.

[0020] like Figure 4 As shown, the base anchor block 5 and the auxiliary anchor block 6 are made of reinforced concrete, with a segment length of 2000 mm and a height of 600 mm. The bottom surface of the base anchor block 5 and the top surface of the auxiliary anchor block 6 are both 1000 mm wide.

[0021] like Figure 2 , Figure 3 As shown, the top corners of the base anchor block 5 and the bottom corners of the auxiliary anchor block 6 are chamfered with a radius of 50 mm to prevent the cushion layer 2 from being damaged by the fast edges of the anchors.

[0022] Figure 5 The bolt rod 7 is made of reinforced concrete, with a segment length of 2000 mm and a radius of 78 mm. The base anchor block 5 and the auxiliary anchor block 6 are installed in segments and inserted into the bolt hole from the side. The function is to limit the horizontal relative displacement of the base anchor block and the auxiliary anchor block, and also to squeeze and fix the cushion layer 2.

[0023] like Figure 6 As shown, the limit pile 8 has a square cross-section, a conical bottom, a pile length of 1200mm, and the reserved limit pile hole 5-4 has a square cross-section with a side length of 110mm. Two limit pile holes are set in each segment with an internal spacing of 1090mm. The gap between the reserved limit pile hole 5-4 and the limit pile 8 is filled with bonding material to fix the two.

[0024] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A landfill mortise and tenon type liner fixing device, comprising a liner (2), characterized in that: The device comprises a base anchor block (5), an auxiliary anchor block (6), a bolt rod (7), and a limit pile (8). The base anchor block (5) is provided with a reserved limit pile hole (5-4). The limit pile (8) is inserted into the lower foundation through the reserved limit pile hole (5-4). The top of the limit pile (8) is flush with the top surface of the base anchor block (5). The base anchor block (5) is provided with an A tenon (5-1), a B mortise (5-2), and a C semicircular lower groove (5-3). The auxiliary anchor block (6) is provided with an A tenon (6-1), a B tenon (6-2), and a C semicircular upper groove (6-3). 3); the A tenon (5-1) and the B tenon (6-2) have a head arc radius of 50 mm; the A mortise (6-1) and the B mortise (5-2) have an internal arc radius of 65 mm; the C semicircular lower groove (5-3) has a radius of 95 mm, and the C semicircular upper groove (6-3) has a radius of 80 mm; after the base anchor block (5) and the auxiliary anchor block (6) are butt-jointed, the A tenon (5-1) and the A mortise (6-1) match each other, The B tenon (6-2) matches the B mortise (5-2), the C semicircular lower groove (5-3) and the C semicircular upper groove (6-3) are combined to form a bolt hole, a bolt rod (7) is arranged in the bolt hole, and the radius of the bolt rod (7) is 78 mm; the cushion layer (2) is composed of a protective geotextile (3) and an impermeable membrane (4), the impermeable membrane (4) is placed between the upper and lower layers of the protective geotextile (3), the cushion layer (2) is laid from the slope to the joint between the base anchor block (5) and the auxiliary anchor block (6), and the cushion layer (2) is placed between the bolt rod (7) and the C semicircular lower groove (5-3).

2. A landfill mortise and tenon type liner fixing device according to claim 1, characterized in that: The base anchor block (5) and the auxiliary anchor block (6) are made of reinforced concrete material, with a segment length of 2000 mm and a height of 600 mm. The bottom surface of the base anchor block (5) and the top surface of the auxiliary anchor block (6) are both 1000 mm wide. The top corners of the base anchor block (5) and the bottom corners of the auxiliary anchor block (6) are provided with arc chamfers.

3. A landfill mortise and tenon type liner fixing device according to claim 1, characterized in that: The bolt rod (7) is made of reinforced concrete material, and the length of the segment is 2000 mm.

4. A landfill mortise and tenon type liner fixing device according to claim 1, characterized in that: The limit pile (8) has a square cross section and a conical bottom. The pile length is 1200 mm. The reserved limit pile hole has a square cross section with a side length of 110 mm. Two limit pile holes are arranged in each section with an inner spacing of 1090 mm. The gap between the reserved limit pile hole and the limit pile is filled with cementing material.

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