Avanti International 822 Bay Star Blvd. Webster, TX 77598 800-877-2570 281-486-5600      Select Product Below Show All AC-50W Root Inhibitor AV-100 Chemical Grout AV-101 Catalyst T AV-102 Catalyst AP AV-103 Catalyst SP AV-105 Ethylene Glycol AV-118 Duriflex Acrylic Gel AV-160 SuperGel AV-200 Dura-Set AV-202 Multigrout AV-208 Acetone AV-215 Resin Rod AV-219 Fibrotite/Oakum AV-222 Cleaner AV-248 Flexseal AV-249 Accelerator AV-254 Gel Seal AV-255G Grout Side Accelerator AV-257 Icoset AV-275 Soilgrout AV-278 Low Vis Hydro AV-279 Low Vis Accel AV-280 Hydrofoam AV-280-12 Hydrofoam AV-281 Hydrocel AV-284 Pump Wash AV-290 Fast-Set AV-310 Hydro Sealant AV-315 Micro Foam AV-330 Safeguard AV-333 Injectaflex AV-350 Multi Gel AV-351 Accelerator Potassium Ferricyanide (KFe) Ultrafine Cementitious Grout Show All _____________________________________________________ Select Grout Type Below Show All Additives and Catalysts Cementitious Grout Chemically Activated Gel Elastomer Hydrophobic Foam Hydrophylic Foam Hydrophylic Gel Pumps Safety Supplies Show All _____________________________________________________ Select Application Below Show All Airports Concrete Repair Curtain Grouting Dams Encapsulation of Hazardous Waste Geotechnical Laterals Mainline Sewers Manholes Mines Oil Wells Parking Structures Probe Grouting Sewers (all applications) Soil Stabilization Storm Sewers Subways Tunnels Underground Structures Show All _____________________________________________________ << Go back to previous page Date: 1960 Author: American Cyanamid Publication: AM-9 Technical Manual Title: Controlling Seepage During Shaft Sinking LOCATION: Mine Shaft #28, Viburnum, Missouri, U.S.A. OWNER: St. Joseph Lead Company APPLICATION BY: St. Joseph Lead Company PROBLEM: In order to reach newly discovered lead deposits, St. Joseph Lead Company had to sink large diameter deep shafts through permeable Lamotte Sandstone carrying ground water at high pressures. The #28 shaft had to bottom in water-bearing sandstone, a drift sump had to be cut, and a short spillrock raise driven to the loading pocket. SOLUTION: Before operations were started, St. Joseph Leak Company’s research department collected all information available on grouting and investigated various materials and methods. AM-9 was selected because it would permeate sandstone, was easy to handle with available equipment, and gel times could be closely controlled. APPLICATION: Flow from initial test-hole was 60 gpm and static formation pressure was 360 psi. A total of 43,500 gallons of AM-9 solution was pumped into a double row of grout holes, 88 feet deep. Outer holes were spaced four feet apart, 13 feet from shaft center. Inner holes were collared 11 feet from the center and spaced between outer holes. Gel times varied from 20 to 40 minutes. Grouting pressure occasionally reached 1,100 psi but averaged around 400 psi. RESULTS: AM-9 Chemical Grout quickly sealed the smallest openings, effectively reducing water flow to well under one gallon per minute. Grouting was completed in 24 days with significant saving in time and labor. Techniques have been repeated with similar success in other St. Joseph Lead Company shafts. Note: In 1978, AM-9 Chemical Grout was replaced in the marketplace by AV-100 Chemical Grout.