Record materials for technical disclosure of earthwork
1. Main machines and tools: 1.1 Earth moving machinery includes: excavator, bulldozer, scraper, dump truck, etc. 1.2 General machines include: shovel (pointed and flat head), trolley, small white wire or 20 # lead wire, steel tape and grade ruler. 2. Be familiar with drawings and construction scheme. 3. Operation conditions: 3.1 Before earth excavation, the underground and ground obstacles in the construction area shall be removed and disposed according to the requirements of the construction plan. 3.2 The location of buildings or structures or the location control line (pile) of the site, standard horizontal pile and the size of the gray line of the slotting must pass the inspection; And complete the pre inspection procedures. 3.3 During construction at night, there should be enough lighting; Clear signs shall be set in dangerous sections, and excavation sequence shall be arranged reasonably to prevent wrong excavation or over excavation. 3.4 Excavation of foundation pit with underground water level; In case of pipe trench, measures shall be taken to reduce the groundwater level according to the local engineering geological data. Generally, it shall be lowered to 0.5m below the excavation surface before excavation. 3.5 The roads, bridges and unloading facilities that the construction machinery passes through when entering the site shall be inspected in advance, and the reinforcement or widening shall be carried out when necessary. 3.6 The selection of earth moving machinery shall be determined according to the terrain and operating conditions of the construction area, the type and thickness of soil, the total quantities and the construction period, so as to give full play to the efficiency of the construction machinery, and the construction scheme shall be prepared. 3.7 The layout of the operation route in the construction area shall be determined according to the size, mechanical performance, transportation distance, topographic relief and other conditions of the project in the operation area. 3.8 Manual work shall be provided for the parts where mechanical construction cannot be carried out, slope trimming, groove bottom cleaning, etc.