19 05 0
The ordinary anchor bolt is mainly suitable for the whole formation. When the formation is broken or accumulated by the filling material, the DTH Drill is used to form a hole, the hole is easy to collapse, and the ordinary anchor rod can not be put into the hole smoothly. In this case, the self […]
14 04 0
The advantages of hollow self drilling anchor – Hollow self drilling anchor combines functions of drilling, grouting and anchoring, is an advanced anchoring and support system, which can solve problem of hole collapse and ensure grouting effect under complex geological condition. At aspects of bending resistance, shearing strength and surface bonding, hollow drilling rock bolt […]
10 03 0
In late-2016, the 18.80 km RV Road–Bommasandra line was put forward, the Bangalore Metro Rail Corporation Ltd. has now also initiated the Bangalore Metro’s new 21.25 km Gottigere–Nagawara line under the 72 km Phase 2 project. Its 7.50 km elevated viaduct in south Bangalore from Gottigere to Swagath Road Cross includes 5 new stations, Gottigere, […]
1 03 0
Solve the problem that broken into a hole and quick make a hole safely in the rock mass is the important achievement of the construction, the construction process in strict accordance with the “advance guard, short excavation, weak blasting, spray anchor, frequently measure” principle, slowly but surely, step-by-step. Self drilling injection anchor combines drilling, grouting […]
20 02 0
As an efficient anchoring method, self drilling anchor bolt is used in complicated, loose and broken geological condition. It’s also widely applied to pre-support project, radial support project, slope stabilization, foundation support project, roadway support project, soil nail wall, back pull anchor rod retaining wall and other rock supporting work. There are 4 tips in […]
20 02 0
The purpose of self drilling anchor bar’s tension is to make free section produce elastic deformation through tensioning equipment, which can exert prestress value for anchoring structure. Its general requirements are as following: 1. Tensioning equipment should be chosen according to material and locking force of self drilling anchor bar. 2. Before tensioning, tensioning equipment […]
20 01 0
With increase of population and exploitation of land resources, slope problem has become one of three global geological disasters, ranking with earthquake and volcano. Owing to slope instability, collapse, landslide and debris flow brought massive loss for people’s life and property, slope stability problem becomes more and more prominent. It involves excavation slope of high-rise […]
16 01 0
Anchor bolt combines drilling, installing, grouting and anchoring together, is a well-designed system according to different site conditions, geological conditions and usage conditions, with high-efficient, reliable and convenient features, which ensures its anchoring effect in different and complex stratum. Before anchor bolt design, geological mechanical parameters of surrounding rocks should be comprehensive, accurate and reliable, […]
6 01 0
Before rupture surface appearing in rock slope, its change characteristics belong to deformation characteristics and after penetrating rupture surface appearing, it belongs to failure characteristic. Its development processes are: loose or tension crack, rock mass creep, accelerated creep and failure. The first three steps are deformation characteristics and the last step is failure characteristic. 1. […]
30 12 0
After a 4-month break, here’s the Delhi Metro Phase 3 tunneling update for December 2016. In the past month, final TBM breakthroughs have been achieved on the Pink Line & Magenta Line leaving just 1 more TBM breakthrough pending on the Dwarka –Najafgarh line. In late November, the DMRC bizarrely announced that Phase 3’s tunneling […]