A limestone quarry in Kentucky experienced rock falls near the high walls supporting its crusher facilities. Low-capacity draped mesh that had been placed in the area more than ten years ago was raveling, and large blocks were threatening not only the safety of the plant workers, but the plant facilities themselves. GSI®’s rockfall team worked in conjunction with the client and the client’s consulting engineers to develop a plan to spot bolt some of the dangerous overhangs and reconstruct the draped mesh using GeoBrugg’s high capacity Tecco® mesh. By using GSI®’s purpose-built limited-access wagon drills for the tight access site, the team’s price was less than half of that proposed by competing teams.
A variation of karst sinkhole grouting is the grouting of mined coal seams and workings located below existing infrastructure that exhibit the potential to propagate to the surface and cause sinkholes and/or subsidence.