South San Joaquin Irrigation District

South
San
Joaquin
Irrigation
District
 Client / Contact







Manteca,
California


South San Joaquin Irrigation District / Ron Morrow (209) 652-2987

Beck’s Enterprises works closely with South San Joaquin Irrigation District to maintain 4 tunnels located in the canal system owned by the District. Taking into consideration the S.S.J.I.D. budget, Beck’s Enterprises inspects and repairs critical areas as budget allows. During the 2007-2008 Maintenance Shutdown Beck's Enterprises addressed controlled rock falls of large boulders and rocks on the near vertical cut slopes in the mineralized zone over hanging the canal. Safety Slope Protection was done by scaleing and removing loose rocks and rockblocks that potentially could fall into the canal causing injury to personnel and or canal blockage. This work was being done using a 105’ JLG Highlift, High scaling Ropes and Scaling Bars. Beck's Enterprises also completing repairs by installing rockbolts and placing ‘shotcrete with fiber’.

In 2006, Beck's Enterprises addressed controlled rock falls of large boulders and rocks on the near vertical cut slopes in the mineralized zone over hanging the canal. Beck's Enterprises removed the largest portion of a large block rock overhanging 80 ft. above the canal on a near vertical slop, by drill and shoot method. During water maintenance shutdown, Beck's Enterprises completed repairs using the rockbolt and shotcrete containing fiber method. Over 700 7ards of dry shotcrete was placed in the tunnel at various locations.


 
 In 2006 for South San Joaquin Irrigation District, Beck's Enterprises constructed a new Trestle Bridge to support a 24” water pipe.

Beck's Enterprises removed an existing 128 ft. of trestle and replaced with new footings, lumber and pipe. All work in 2006 maintenance shutdown was completed within budget and ahead of schedule.

In 2005 maintenance shutdown, Beck’s Enterprises completed all repairs to the 1,265 ft Gable Tunnel. The Upstream and downstream portals were cleaned of debris, then rockbolts were installed and shotcrete containing fiber were placed for ground control. A 120 ft. grid of rebar was placed at the entrance of the tunnel upstream and a grid of 250 ft. at the entrance of the tunnel downstream due to thin side walls. Rockbolt and shotcrete containing fiber method was applied for ground control though out the tunnel.

Beck’s Enterprises constructed a ditch above the Gable Tunnel to divert water run off away from the portal of the tunnel. Beck’s Enterprises also did ground control above the canal to prevent rocks falling into the canal. All work in 2005 maintenance shutdown was completed within budget and ahead of schedule.





 
 In 2004 maintenance shutdown, Beck’s Enterprises completed repairs in high severity critical areas of the tunnels using wire fabric, rockbolt and shotcrete. The existing vent and muck shaft were used for utilities and shotcrete lines pumping the shotcrete up to 900 feet. All work in 2004 maintenance shutdown was completed within budget and ahead of schedule.


 In 2003 during the districts maintenance shutdown, the repair consisted of high scaling 70' above the portal cut. After all vegetation, rocks, and loose ground were removed, there were holes drilled and rockbolts installed for ground support. The portal cut was then covered with wire fabric and shotcrete. 
 All loose rocks were scaled down before installing rockbolts for ground support at various locations though out the tunnel. Wire fabric and shotcrete were placed at various critical areas of the tunnel. All work in 2003 maintenance shutdown was completed within budget and ahead of schedule. In 2000, Beck’s Enterprises widened the bank ramp into the canal for better access. Drill and shoot method was used to widen the ramp. All work in 2000 maintenance shutdown was completed within budget and ahead of schedule.




In 1999, Beck’s Enterprises completed repairs in high severity critical area of the Ram Tunnel and the Long Tunnel using wire fabric, rockbolts, and shotcrete method for ground support. All work was completed within budget and ahead of schedule. In 1997, Beck’s Enterprises did repairs in the Copper Tunnel. The tunnel repairs required ground support in critical areas by method of placing support wire, rockbolts, and shotcrete for support. All work was completed ahead schedule.