System and method for installing a membrane-lined buried wall

A liner installation sled adapted for being positioned in an installation position relative to a trench having a length, the liner installation sled comprising:

• a frame;
• at least two support members mounted on the frame, the at least two support members adapted to movably support the frame on a surface over the trench;
• a first liner roller rotatably mounted on the frame, the first liner roller having a first longitudinal axis that is aligned with the length of the trench and being adapted to hold a first roll of a first liner above the surface on a first side of the trench when the liner installation sled is in the installation position relative to the trench;
• a second liner roller rotatably mounted on the frame and being adapted to hold a second roll of a second liner above the surface on the first side of the trench when the liner installation sled is in the installation position relative to the trench;
• a weight suspension system mounted on the frame and adapted to movably suspend an elongated weight that can be lowered into the trench and raised out of the trench, wherein the elongated weight is aligned with a vertical centerline of the frame;
• and
• a liner end clamp mounted on the frame to hold a first edge of the first liner and a second edge of the second liner above the trench, wherein the first edge and the second edge are both alignable with the length of the trench;
• wherein the elongated weight is usable with the weight suspension system to force a portion of the first liner and the second liner into the trench.

A liner installation sled adapted for being positioned in an installation position relative to a trench having a length, the liner installation sled comprising:

• a frame;
• at least two support members mounted on the frame, the at least two support members adapted to movably support the frame on a surface over the trench;
• a first liner roller rotatably mounted on the frame, the first liner roller having a first longitudinal axis that is aligned with the length of the trench and being adapted to hold a first roll of a first liner above the surface on a first side of the trench when the liner installation sled is positioned in the installation position relative to the trench;
• a second liner roller rotatably mounted on the frame and being adapted to hold a second roll of a second liner above the surface on the first side of the trench when the liner installation sled is in the installation position relative to the trench;
• a weight suspension system mounted on the frame and adapted to movably and rotatably suspend a rotatable elongated weight that can be lowered into the trench and raised out of the trench, wherein the elongated weight is aligned with a vertical centerline of the frame;
• a positioning roller rotatably mounted on the frame such that the first liner and the second liner will roll over the positioning roller when the rotatable elongated weight is lowered into the trench;
• and
• a liner end clamp mounted on the frame to hold a first edge of the first liner and a second edge of the second liner above the trench, wherein the first edge and the second edge are both alignable with the length of the trench and wherein the liner clamp is mounted so that it is positioned above the surface on a second side of the trench when the liner installation sled is in the installation position relative to the trench;
• wherein the rotatable elongated weight is usable with the weight suspension system to force a portion of the first liner and a portion of the second liner into the trench, wherein the rotatable elongated weight will rotate when it forces the portion of the first liner and the portion of the second liner into the trench.