After the construction site is selected, the sundries and sludge on the surface shall be removed by excavator and transported to the designated site for stacking. For site selection, the intercepting ditch on the slope top shall be completed before site excavation, and the anti-seepage work shall be done according to the soil conditions. The site excavation must be conducted from top to bottom. Random excavation, over excavation and under excavation are not allowed. When excavating to the top of the site, attention shall be paid to the reserved rolling settlement height. When encountering rock, the crushing hammer shall be used for construction.
After excavation to the design elevation, it shall be compacted and leveled. If the bearing capacity cannot be reached, it shall be replaced with rubble. When leveling and hardening the site of the drainage mixing plant, the overall control is to set drainage to both sides, with -3% longitudinal slope, and 40 × 40 drainage ditch to ensure smooth drainage in the site.
When the six silos harden the site, they shall be provided with a single 5% drainage slope, so that the water from the silos can be directly discharged into the drainage ditch through the longitudinal slope of the site; The main machine drainage of the mixing plant must be provided with a sedimentation tank so that the waste water from the mixer can be discharged into the drainage ditch after sedimentation. Off site setting 60 × 40 drainage ditch. No.04 site hardening
Level I: 1m rubble +0.3m water stable layer +0.2mc25 concrete; Grade II and III: 0.3m water stable layer +0.2mc25 concrete. No.05 mixing plant, silo foundation mixing plant and silo foundation are of pile supported type, and the bearing platform size is 5 × five × 1m. Four pile foundations with a diameter of 1.2m are set under each bearing platform. The pile is embedded into the moderately weathered rock stratum for not less than 4m, and C30 concrete is used for pouring.
The silo yard is arranged at the rear side of the main machine of the mixing plant, which is divided into 6 silos, two sand silos and four stone silos. The partition wall of the silo is constructed with "37" wall with a height of not less than 1.8m and plastered with cement mortar. The ground inside the silo is set with a 5% ground slope. Holes are reserved under the partition wall of the silo to avoid ponding.
The areas of various silos shall be clearly divided, and material signboards with a size of 40*750px shall be set to indicate the name, origin, specification, unit of measurement, quality status, etc. of the materials. Water pipes shall be installed at the edge of the silo to wash the sand and stone materials if they are contaminated.
Jinan water stability mixing plant adopts closed management. According to the actual situation of the site, it is surrounded by 24 brick walls with a height of 2m. A brick column is built every 6m, and the top of the brick column is capped. A guard room shall be set at the entrance and exit, with slogans on safety generation and quality hung and colored flags inserted. Signboards shall be set up for on-site construction.
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