采用氧腐蚀试验、CO2腐蚀试验、硫化物应力腐蚀试验,对比分析36Cr Ni Mo4与4130H两种材质钻杆的抗腐蚀性能。分析结果表明:36Cr Ni Mo4与4130H两种材质钻杆的氧腐蚀速率基本相同;36Cr Ni Mo4材质钻杆的抗CO2腐蚀性能优于4130H材质,但抗...采用氧腐蚀试验、CO2腐蚀试验、硫化物应力腐蚀试验,对比分析36Cr Ni Mo4与4130H两种材质钻杆的抗腐蚀性能。分析结果表明:36Cr Ni Mo4与4130H两种材质钻杆的氧腐蚀速率基本相同;36Cr Ni Mo4材质钻杆的抗CO2腐蚀性能优于4130H材质,但抗硫化物应力腐蚀开裂性能明显低于4130H材质。展开更多
H-H joint of ＂H-jointed SPSP with H-H joint＂, which is made up of interlocking two H-steel sections of different sizes, is the one of SPSP＇s joint to improve the hydraulic conductivity. ＂H-H jointed SPSP with H-H ...H-H joint of ＂H-jointed SPSP with H-H joint＂, which is made up of interlocking two H-steel sections of different sizes, is the one of SPSP＇s joint to improve the hydraulic conductivity. ＂H-H jointed SPSP with H-H joint＂ is expected to be applied to a vertical cutoff wall in coastal landfill sites. In H-jointed SPSP with H-H joint, the H-joint is completely imperviousness. H-H joint, however, is pervious at interlocked state because a gap of 8 to 11 mm is left between the interlocking flanges, therefore, a water interception treatment must be conducted to seal the gap. The water shielding treatment of H-H joint is executed by coating the gaps with a water-swelling sheet of paint before its installation. Then, hollow space is generated in H-H joint after treating by water-swelling sheet, and that space can be used effectively. This paper proposes leachate control technologies using H-H joint interior space of SPSP cutoff walls. The possibility of those technologies and hydraulic conductivity of H-jointed SPSP with H-H joints are demonstrated by conducting the hydraulic conductivity test.展开更多
文摘采用氧腐蚀试验、CO2腐蚀试验、硫化物应力腐蚀试验,对比分析36Cr Ni Mo4与4130H两种材质钻杆的抗腐蚀性能。分析结果表明:36Cr Ni Mo4与4130H两种材质钻杆的氧腐蚀速率基本相同;36Cr Ni Mo4材质钻杆的抗CO2腐蚀性能优于4130H材质,但抗硫化物应力腐蚀开裂性能明显低于4130H材质。
文摘H-H joint of ＂H-jointed SPSP with H-H joint＂, which is made up of interlocking two H-steel sections of different sizes, is the one of SPSP＇s joint to improve the hydraulic conductivity. ＂H-H jointed SPSP with H-H joint＂ is expected to be applied to a vertical cutoff wall in coastal landfill sites. In H-jointed SPSP with H-H joint, the H-joint is completely imperviousness. H-H joint, however, is pervious at interlocked state because a gap of 8 to 11 mm is left between the interlocking flanges, therefore, a water interception treatment must be conducted to seal the gap. The water shielding treatment of H-H joint is executed by coating the gaps with a water-swelling sheet of paint before its installation. Then, hollow space is generated in H-H joint after treating by water-swelling sheet, and that space can be used effectively. This paper proposes leachate control technologies using H-H joint interior space of SPSP cutoff walls. The possibility of those technologies and hydraulic conductivity of H-jointed SPSP with H-H joints are demonstrated by conducting the hydraulic conductivity test.
