|An agitator truck is ready to pump grout through the hoses to the stinger. The grout mix can be pumped directly into the top of the truck at the concrete plant on the project.|
The long pipe on the track hoe boom,
called a stinger, pumps grout through
previously drilled holes to fill the
underground voids and form a
Today's #KDOTTUESDAY takes us to southeast Kansas.
Long-abandoned underground mine voids that were part of the Weir-Pittsburg coal bed are being filled as part of the K-7 widening and modernization project in Cherokee County. Crews have been working steadily to pump concrete grout into holes drilled five feet apart along a four-mile section of the project.
The entire project includes 11 miles of K-7 from U.S. 160 at Columbus north to U.S. 400 at Cherokee. The roadway is being widened to 44 feet, with 12-foot driving lanes and 10-foot shoulders. The first phases of work started in 2016.
The mine grouting is part of the final phase of highway reconstruction, from U.S. 160 north to K-102. Koss Construction of Topeka is the primary contractor.