CN111119248B

CN111119248B - A landfill mortise and tenon type liner fixing device

Info

Publication number: CN111119248B
Application number: CN202010109121.5A
Authority: CN
Inventors: 宋凡; 李明飞; 霍欣雨; 张雪梅; 李欢; 武帅斌
Original assignee: Shenyang University of Technology
Current assignee: Shenyang University of Technology
Priority date: 2020-02-21
Filing date: 2020-02-21
Publication date: 2025-02-07
Anticipated expiration: 2040-02-21
Also published as: CN111119248A

Abstract

A landfill mortise and tenon liner fixing device, the device comprises a base anchor block, an auxiliary anchor block, a bolt rod, and a limit pile, the limit pile is inserted into the lower foundation through a reserved limit pile hole; the base anchor block is provided with a tenon A, a mortise B, and a semicircular lower groove C, the auxiliary anchor block is provided with a mortise A, a tenon B, and a semicircular upper groove C; the liner layer is laid from the slope to the joint between the base anchor block and the auxiliary anchor block, and the liner layer is placed between the bolt rod and the semicircular lower groove C. The landfill mortise and tenon liner fixing device proposed by the present invention can improve the problems of the traditional concrete pouring fixing form, such as long construction period, difficult maintenance and reinforcement, etc. While fixing the liner layer, the integrity of the liner layer can be maintained to avoid leakage.

Description

Mortise and tenon type lining layer fixing device for landfill

Technical Field

The invention belongs to the technical field of environmental geotechnical engineering, and particularly relates to a mortise and tenon type lining layer fixing device for a landfill.

Background

In urban sanitary landfills, a liner system must be provided to prevent groundwater contamination by leachate infiltration into the ground. The liner layer includes geomembranes and geotextiles. The geomembrane is a flexible waterproof geosynthetic material, has high seepage-proofing coefficient, good chemical stability, strong acid, alkali and oil corrosion resistance, good heat resistance and cold resistance and long service life. The geotextile is used for protecting the geomembrane from being pierced by hard objects.

The continuous accumulation of refuse during landfill, the continuous compression and the action of the landfill work vehicle will create a pulling force in the bedding. To prevent shifting and excessive deformation of the liner layer, it is generally fixed at the top end of the slope or at the platform of the segmented slope. In order to prevent the seepage-proofing function of the lining layer from being damaged, the lining layer cannot be fixed by adopting a penetration mode such as rivets except the edges. At present, in urban domestic refuse landfill sites, a concrete pouring type fixing method is applied more, generally, rectangular grooves are firstly excavated, and lining layers are poured and fixed in the grooves by cement concrete. In the construction process of the traditional concrete pouring and fixing method, the side wall and the bottom surface of the groove are required to be reinforced, the engineering quantity is large, the concrete on the lining layer is required to be cured, and the construction period is long. In addition, if the lining layer under the concrete is damaged, the concrete pouring body needs to be broken off for maintenance and reinforcement, and the engineering quantity is large.

Disclosure of Invention

In order to solve the technical problems, the invention provides a mortise and tenon type lining layer fixing device for a landfill, which adopts an assembled structure and can solve the problems of long construction period, difficult maintenance and reinforcement and the like of the traditional concrete pouring fixing mode.

The foundation anchor block is provided with an A tenon, a B mortise and a C semicircular upper groove, the head arc radius of the A tenon and the B tenon is 50mm, the A mortise and the B mortise are respectively provided with an inner arc radius of 65mm, the C semicircular lower groove is 95mm, the C semicircular upper groove is 80mm, the A tenon is matched with the A mortise after the foundation anchor block is butted with the auxiliary anchor block, the B tenon is matched with the B mortise, the C semicircular lower groove is formed into a hole with the C semicircular upper groove, the B tenon is provided with an anti-seepage rod, the B tenon is arranged in the hole, the anti-seepage membrane is arranged between the C semicircular upper groove and the side slope, and the anti-seepage membrane is arranged between the C semicircular upper groove and the side slope.

Further, the base anchor block and the auxiliary anchor block are made of reinforced concrete materials, the length of the section is 2000mm, the height of the section is 600mm, the widths of the bottom surface of the base anchor block and the top surface of the auxiliary anchor block are 1000mm, and the corners of the top surface of the base anchor block (5) and the corners of the bottom of the auxiliary anchor block (6) are provided with arc chamfers.

Further, the bolt is made of reinforced concrete material, and the section length is 2000mm.

Further, the cross section of the limiting pile is square, the bottom is conical, the pile length is 1200mm, the cross section of the reserved limiting pile hole is square, the side length is 110mm, two limiting piles are arranged in each section, the inner distance is 1090mm, and a gap between the reserved limiting pile hole and the limiting pile is filled with cementing materials.

The invention has the advantages and effects that:

the mortise type lining layer fixing device for the landfill provided by the invention can be prefabricated in a factory, constructed in an on-site assembly mode, and the components are manufactured in a standardized mode, so that the working efficiency can be improved, and the construction period can be shortened. The problems of long construction period, difficult maintenance and reinforcement and the like of the traditional concrete pouring fixed mode can be solved. The integrity of the liner layer is maintained while the liner layer is secured to avoid leakage.

Drawings

FIG. 1 is an overall cross-sectional view of the present invention;

FIG. 2 is a side view of a base anchor block;

FIG. 3 is a side view of the secondary anchor block;

FIG. 4 is a front view of a base anchor block;

FIG. 5 is a cross-sectional view of a bolt;

fig. 6 is a front view of the spacing pile.

In the figure, 1 is a side slope, 2 is a liner layer, 3 is a protective geotextile, 4 is an impermeable membrane, 5 is a base anchoring block, 5-1 is an A tenon, 5-2 is a B mortise, 5-3 is a C semicircle lower groove, 5-4 is a reserved limit pile hole, 6 is an auxiliary anchoring block, 6-1 is an A mortise, 6-2 is a B tenon, 6-3 is a C semicircle upper groove, 7 is a bolt rod, and 8 is a limit pile.

Detailed Description

The invention is further explained below with reference to the drawings and examples.

As shown in fig. 1, the invention relates to a mortise and tenon type lining layer fixing device for a landfill, which consists of a limit pile 8, a base anchoring block 5, an auxiliary anchoring block 6 and a bolt 7. The side slope 1 of the refuse landfill is provided with a liner layer 2, the liner layer 2 is specifically composed of protective geotextile 3 and an impermeable membrane 4, a base anchoring block 5 is provided with reserved limit pile holes 5-4, limit piles 8 are inserted into a lower foundation through the reserved limit pile holes 5-4, the tops of the limit piles 8 are flush with the top surface of the base anchoring block 5, and the base anchoring block 5 is fixed on the foundation. As shown in FIG. 2, the base anchor block 5 is provided with an A tenon 5-1, a B mortise 5-2 and a C semicircle lower groove 5-3, and as shown in FIG. 3, the auxiliary anchor block 6 is provided with an A mortise 6-1, a B tenon 6-2 and a C semicircle upper groove 6-3. The radius of the circular arc of the head of the tenon 5-1 and the tenon 6-2 of the A mortise is 50mm, the radius of the circular arc of the inside of the mortise 6-1 and the mortise 5-2 of the B mortise is 65mm, the radius of the lower semicircular groove 5-3 of the C is 95mm, the radius of the upper semicircular groove 6-3 of the C is 80mm, and the radius of the lower semicircular groove 5-3 of the C is larger than the radius of the upper semicircular groove 6-3 of the C, so that space is provided for the lining layer 2. The cross section of the base anchoring block 5 and the auxiliary anchoring block 6 are in a rectangular shape after being spliced in an L-shaped mode, an inward concave B-shaped mortise 5-2 is formed in the inner corner of the base anchoring block 5L, an outward protruding A-shaped tenon 5-1 is arranged at the tail end of the base anchoring block, an inward concave A-shaped mortise 6-1 is formed in the inner corner of the auxiliary anchoring block 6L, an outward protruding B-shaped tenon 6-2 is arranged at the tail end of the L-shaped, an inward C-shaped semicircular lower groove 5-3 and an inward C-shaped semicircular upper groove 6-3 are formed in the middle of a splicing seam of the base anchoring block 5 and the auxiliary anchoring block 6, the lining layer 2 is extruded between the base anchoring block 5 and the auxiliary anchoring block 6, the A-shaped tenon 5-1 corresponds to the A-shaped mortise 6-1, the lining layer 2 is located between the two, the B-shaped tenon 6-2 corresponds to the B-shaped mortise 5-2, and the lining layer 2 is located between the two. The bolt 7 is inserted into a bolt hole formed by surrounding the lower C-semicircle groove 5-3 and the upper C-semicircle groove 6-3, and the liner layer 2 is extruded between the bolt 7 and the lower C-semicircle groove 5-3.

As shown in fig. 4, the base anchor block 5 and the auxiliary anchor block 6 are reinforced concrete materials, the length of the segment is 2000mm, and the height is 600mm. The width of the bottom surface of the base anchoring block 5 and the top surface of the auxiliary anchoring block 6 are 1000mm.

As shown in fig. 2 and 3, the top corners of the base anchor block 5 and the bottom corners of the auxiliary anchor block 6 are provided with arc chamfers with the radius of 50mm so as to prevent the lining layer 2 from being damaged by the fast anchor corners.

The bolt rod 7 shown in fig. 5 is made of reinforced concrete, the section length is 2000mm, the radius is 78mm, and the base anchor block 5 and the auxiliary anchor block 6 are inserted into the bolt hole from the side after being installed in place. The function is to limit the horizontal relative displacement of the base anchor block and the auxiliary anchor block, and in addition, the lining layer 2 can be extruded and fixed.

As shown in FIG. 6, the cross section of the spacing pile 8 is square, the bottom is conical, the pile length is 1200mm, the cross section of the reserved spacing pile hole 5-4 is square, the side length is 110mm, two spacing sections are arranged, the inner space is 1090mm, and the gap between the reserved spacing pile hole 5-4 and the spacing pile 8 is filled with cementing materials, so that the two spacing pile holes are fixedly connected.

The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims

1. A mortise type foundation layer fixing device for a landfill site comprises a foundation layer (2) and is characterized by comprising a foundation anchoring block (5), an auxiliary anchoring block (6), a bolt (7) and a limiting pile (8), wherein a reserved limiting pile hole (5-4) is formed in the foundation anchoring block (5), the limiting pile (8) is inserted into a foundation at the lower part through the reserved limiting pile hole (5-4), the top of the limiting pile (8) is flush with the top surface of the foundation anchoring block (5), the foundation anchoring 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 anchoring block (6) is provided with an A mortise (6-1), a B tenon (6-2) and a C semicircular upper groove (6-3), the A tenon (5-1), the B tenon (6-2) have a 50mm radius, the A mortise (6-1) and the B mortise (5-2) have an inner radius of 65, the C mortise (5-2) and the C tenon (6-3) are matched with the C semicircular lower groove (5-3) in a circle arc shape, the C mortise (6-3) and the C mortise (6-3) is matched with the auxiliary mortise (6-3) and the C semicircular lower groove (6-3) is matched with the C semicircular groove (6-3), the B tenon (6-2) is matched with the B mortise (5-2), the C semicircle lower groove (5-3) and the C semicircle upper groove (6-3) are surrounded to form a bolt hole, a bolt rod (7) is arranged in the bolt hole, the radius of the bolt rod (7) is 78mm, the lining layer (2) is composed of a protective geotechnical cloth (3) and an impermeable membrane (4), the impermeable membrane (4) is arranged between the upper protective geotechnical cloth (3) and the lower protective geotechnical cloth (3), the lining layer (2) is paved between the butt joint of the base anchor block (5) and the auxiliary anchor block (6) from a side slope, and the lining layer (2) is arranged between the bolt rod (7) and the C semicircle lower groove (5-3).

2. The mortise and tenon type lining layer fixing device for a landfill according to claim 1, wherein the base anchor block (5) and the auxiliary anchor block (6) are made of reinforced concrete materials, the section length is 2000mm, the height is 600mm, the width of the bottom surface of the base anchor block (5) and the top surface of the auxiliary anchor block (6) is 1000mm, and circular arc chamfers are arranged at the corners of the top surface of the base anchor block (5) and the corners of the bottom of the auxiliary anchor block (6).

3. A landfill mortise type lining layer fixing device according to claim 1, wherein the bolt rod (7) is made of reinforced concrete material, and the section length is 2000mm.

4. The mortise and tenon type lining layer fixing device for a landfill site is characterized in that the section of a limit pile (8) is square, the bottom of the limit pile is conical, the pile length is 1200mm, the section of a reserved limit pile hole is square, the side length is 110mm, two limit pile holes are arranged in each section, the inner distance is 1090mm, and a gap between the reserved limit pile hole and the limit pile is filled with cementing materials.