Landfill liner system
A system and method are provided for a protective barrier liner system on near vertical to vertical slopes of a waste facility. The system includes anchors installed into the side walls of the waste facility, a drainage network including geo-composite drain strips, steel reinforcement, a sprayed water proof membrane, and a pneumatically applied final protective concrete cap layer. The anchors may include soil nails launched from a pneumatic launching device or anchors placed in drilled bores then reinforced with grout. The water proof membrane may be installed between an initial layer of concrete and the final layer of concrete to protect the membrane from damage by facility operations. The steel reinforcement may include wire mesh, whalers, bearing plates, shear studs secured to the bearing plates, and combinations thereof. The system can be constructed in progressive bands spliced together enabling construction of the complete system over a longer period of time.
1. A liner system especially adapted for installation on near vertical or vertical walls of a waste facility, said liner system comprising:
(1) a first liner assembly band including:
a. a first plurality of anchors imbedded in a wall of the waste facility, each anchor having an exposed end that protrudes from the wall;
b. a first plurality of drain elements that capture water and channel the water away from the liner system;
c. a first water proof membrane applied to the wall to function as a waterproof layer to prevent liquid from escaping the liner system;
d. a first metallic reinforcement including a first mesh reinforcement layer placed adjacent the first water proof membrane and supported by said first anchors and a first plurality of whalers connected to the first mesh reinforcement layer; and
e. a first layer of concrete applied to function as a protective cap layer for the first liner assembly band; the applied first layer of concrete providing a structural connection for the first anchors, first drain elements, first water proof membrane and first metallic reinforcement,
wherein the first liner assembly has an upper end defined by an upper edge of said layer of concrete, said waterproof membrane and said metallic reinforcement extending above said upper end as splicing elements;
(2) a second liner assembly band disposed above said first liner assembly band including:
a. a second plurality of anchors imbedded in the wall of the waste facility, each anchor having an exposed end that protrudes from the wall;
b. a second plurality of drain elements that capture water and channel the water away from the liner system;
c. a second water proof membrane applied to the wall to function as a waterproof layer to prevent liquid from escaping the liner system;
d. a second metallic reinforcement including a second mesh reinforcement layer placed adjacent the second water proof membrane and supported by said second anchors, and a second plurality of whalers connected to the second mesh reinforcement layer, said second mesh reinforcement layer having a lower end spliced to said splicing elements of said first metallic reinforcement;
e. a second layer of concrete applied to function as a protective cap layer for the second liner assembly band; the applied second layer of concrete providing a structural connection for the second anchors, second drain elements, second water proof membrane and second metallic reinforcement; and
f. wherein the second water proof membrane is applied by spraying so that it overlaps the waterproof membrane of the first liner assembly band thereby creating a continuous waterproof membrane between the first and second liner assembly bands.
2. A liner system, as claimed in claim 1 , further including:
an first additional mesh reinforcement layer spaced from the first mesh reinforcement layer, and said first layer of concrete being applied to also cover said additional mesh reinforcement layer.
3. The liner system, as claimed in claim 1 , further including: a second additional mesh reinforcement layer spaced from the second mesh reinforcement layer, and said second layer of concrete being applied to also cover said second additional mesh reinforcement layer.
4. The liner system, as claimed in claim 1 , further including:
a plurality of shear studs attached to corresponding bearing plates to provide additional metallic reinforcement for either or both of said first and second liner assembly bands.
5. The liner system, according to claim 1 , wherein:
the first or second water proof membrane is a spray-on membrane.
6. The liner system, according to claim 1 , wherein:
the first or second water proof membrane is a pre-fabricated membrane material sized to cover the wall.