What should I do if it rains on the construction site and the road can't get in?

On the one hand, rainy weather is easy to cause muddy roads, on the other hand, it is easy to cause loose rocks during mountain excavation, resulting in landslides and mudslides, which brings great hidden dangers to engineering construction safety. Part of the construction site is located on the excavated mountain, which is easy to cause water accumulation and local immersion. Appropriate measures must be taken to ensure the normal operation of the project construction. In order to do a good job in the management method of putting prevention first and combining defense, the following safety measures are specially formulated. 1. General construction measures 1. The production management department should get in touch with the local meteorological and hydrological departments, grasp the weather changes, rainy days, river floods and flow rates, and inform the construction teams at any time. 2. According to the characteristics of the rain period construction, formulate targeted construction plans; Reasonable construction arrangements; Pay close attention to the weather forecast and make preparations for flood control; 3. The planned construction period should try to avoid heavy rain and rainstorm. 2. Preparation for construction in rainy season: do a good job of site drainage; Do a good job of rain protection for raw materials, finished products and semi-finished products; Formulate drainage and rainproof measures for on-site houses and equipment; Sufficient water pumps and related equipment are needed for drainage, and appropriate waterproof materials such as plastic sheets and linoleum are prepared; 3. The temporary roads shall be compacted and well drained to ensure the smooth circulation of roads in rainy season, without flooding, flushing, sinking or slipping; 4, construction and living areas, filling level off in advance. All kinds of components, machines and tools, templates and other storage sites, as well as steel, cement, woodworking processing production sites, layered rolling compaction, it is forbidden to accumulate water; 5, scaffolding, conform to the requirements of the construction safety technical standards and safety operation procedures, scaffolding without professional acceptance after erection shall not be put into use; 6. Pay attention to the weather forecast at any time and take timely measures. It is not advisable to pour concrete in the open air in the rain. Before pouring concrete, contact the meteorological department to master the weather changes and avoid rain affecting the quality of concrete construction. 7, the rain period construction mainly do a good job of rain, wind, lightning, electricity, flood control, etc. Drainage ditches, foundation pits, pits, etc. should be set up in foundation works, and fences and warning signs should be set up for accumulated water after rain, and pits and wells with a depth of more than 1m should be supported; All machinery and equipment shall be set in a place with high terrain, moisture-proof and rain-proof, and a fortified canopy shall be set up. The power lines of mechanical equipment should be well insulated and have perfect protective grounding; Scaffolding should be inspected frequently, and problems found should be handled in time; Scaffolds and structures should be provided with temporary lightning protection devices according to the regulations of electrical specialty; Anti-skid measures should be taken for scaffolding on the road, and it should be cleaned in time after rain, and the safety measures of scaffolding and electrical equipment should be checked at any time; Bare wires are strictly prohibited at the site, and special personnel are appointed to maintain and manage the power facilities. It is strictly forbidden to change and dismantle the lines without permission, and various rules and regulations are strictly enforced. All construction personnel are forbidden to wear slippers, hard and slippery shoes. 8. During construction in mountainous areas or earthwork excavation areas in rainy season, attention should be paid to debris, landslides and landslides. In this case, it is forbidden to haul, assemble and weld pipes. 9. In rainy days, damp-proof protection shall be provided for damp-prone equipment, such as instruments and cement. 1. It is forbidden to pile up pipes and other materials in low-lying areas such as river valleys and floodplains in rainy days to prevent floods. 11, rainy days should strengthen the forecast of water regime, especially pay attention to the upstream water regime, and take preventive measures as early as possible. Second, the construction plan of civil engineering in rainy season (I) Material storage measures 1. During the rainy season, all cement and other materials with waterproof and moisture-proof requirements must be strictly managed and not placed in the open air; Take rain-proof and rust-proof measures for processed and unprocessed steel bars; 2. Raw materials such as cement shall be stored in a special warehouse and the quantity of each purchase shall be controlled, so as to avoid overstocking, deterioration due to damp or soaking in rain; 3, cement, steel and other materials piled up, should not be directly placed on the ground, cushion height not less than 3mm；; 4, steel stacking area and prefabricated area build fortification canopy, when necessary, cover ponchos on steel bars. (II) Construction measures for earthwork excavation 1. When earthwork is excavated in the rainy season, the working face should not be too large; Should be completed by stages; Pay attention to the stability of the slope, if necessary, increase the slope ratio or set up supports, and excavate the water collection ditch to prevent water from flowing in; During construction, the inspection of slope and support should be strengthened; 2, the rainy season construction of fill engineering, should be continuous, completed as soon as possible; Pay attention to the rain during the construction. Before the rain, the filled soil layer should be compacted in time and a slope should be formed to facilitate the drainage of rain. Rainproof measures should be taken during construction to prevent surface water from flowing into the foundation pit, so as to avoid slope collapse or foundation soil damage; 3. Temporary vertical and horizontal drainage ditches shall be set up in the construction site area, and temporary rapids shall be built for the fill section to prevent the slope from being washed out; 4. Before working in the foundation trench or foundation pit after the rain, first check whether there are any danger signs such as cracks, landslides, support deformation and fracture on the earthwork slope, and ensure safety before construction; 5. Excavation in landslide areas shall meet the following requirements: (1) Collect and be familiar with the hydrological and geological data of landslide areas in advance, and understand the topography and previous landslides; ⑵ Excavation should not be carried out in rainy days; (3) Protect vegetation and drainage ditches in landslide areas; (4) Adopt the construction scheme of treating first and then digging; 5] Before excavation, make good drainage on the ground and underground to prevent surface water from infiltrating into the operation layer; [6] The excavation sequence shall be from top to bottom, and it is forbidden to start the operation from the toe of the slope; Being allowed to pile up equipment or build temporary facilities in landslide areas and dangerous areas. 6. When there are signs of landslide or collapse, take the following measures: (1) Stop the operation immediately and evacuate the operators and equipment; (2) Hang up obvious signs, warning boards and set up red lights at night; (3) draw a warning zone and assign special personnel to be on duty at night; (4) notify the design, construction units and relevant departments, * * * to investigate the danger, make detailed records, and take control measures. 7. Before backfilling earth and stone, the following provisions shall be met when manually cleaning the sundries in pits and ditches and draining water: (1) Check the pit (ditch) wall for cracks, landslides and other phenomena, and take corresponding safety measures for dangerous parts; (2) If water is pumped by a water pump, the electrical insulation of the water pump must be good; (3) When removing electrical equipment and lines, cut off the power supply first. (3) Brick 1 of masonry project must be piled up centrally in the rain period, and it is not suitable for watering. Reasonable collocation of wet and dry bricks when building walls. Don't go up the wall when the brick is wet. Masonry height shall not exceed 1m; 2 In case of heavy rain, work must be stopped. When the wall masonry is finished, a layer of dry brick is placed on the top cover of the brick wall to avoid heavy rain from washing the mortar. After heavy rain, the top two layers of bricks are turned over for the newly-built wall washed by rain; 3. For the wall between windows and independent brick columns with poor stability, set up temporary supports or cast ring beams in time; 4 During masonry construction, the internal and external walls should be built at the same time as far as possible, and attention should be paid to the connection between corners and T-walls. In case of storm, add temporary support in the direction opposite to the wind direction; 5 the mixing amount of masonry mortar should not be too much, so as to meet the needs of masonry. Pay attention to prevent the rain from washing away the mixed mortar; 6 When the construction continues after the rain, recheck the verticality and elevation of the completed masonry, and check the mortar joint of the masonry, and take necessary remedial measures when it is seriously washed by the rain. (IV) Concrete Engineering 1. Under the premise of not affecting the construction period, try to arrange the concrete engineering for construction in sunny days; 2. When concrete works are constructed in rainy days, they should be covered during transportation to prevent rainwater from entering, and the strength and stability of formwork support should be checked at any time; 3, template isolation layer before brushing to grasp the weather forecast in time, in case the isolation layer was washed away by rain; 4. Stop pouring concrete in case of heavy rain, and cover the poured parts; 5, the rain period construction, strengthen the determination of concrete coarse bone fine material moisture content, timely adjust the water consumption; 6, large area before concrete pouring, understand the weather forecast for 2-3 days, try to avoid heavy rain. Rain-proof materials should be prepared at the concrete pouring site so that it can be covered by rain suddenly when pouring; 7. Backfill under the support of formwork should be compacted, and the pad should be added. Check whether there is sinking in time after the rain; 8, when it rains, steel welding, docking, etc. shall not be carried out, and rainproof work shall be done when it is urgently needed or the construction site shall be moved indoors; The newly welded steel bar joint should be protected from rain, so as to avoid brittle crack of the joint when it is quenched and affect the quality of the building; 9. After the concrete foundation is poured, the water in the foundation pit that has not been backfilled shall be drained immediately to avoid foundation soaking instability; The foundation pit that has been dismantled shall be backfilled and compacted in time. For the newly poured foundation, an awning must be erected. (V) Scaffolding 1. Reinforce the scaffold foundation. At the bottom of the scaffold, a steel plate is padded or based on a strip stone; Appropriately add connecting bars with buildings; 2, scaffolding. For people to pass places such as anti-skid and anti-fall measures should be done; 3, check the scaffolding joint fittings, such as found loose or displacement should be reinforced and restored immediately; 4, the rain period shall not be too much construction in scaffolding, working face should not be spread too large, to control the number of scaffolding personnel, components and other building materials; 5, steel scaffolding to do a good job in leakage prevention measures. The junction of scaffold and site construction cable should be well isolated by insulating medium, and equipped with necessary leakage protection devices; Or rearrange the construction cables to avoid the handover with the steel pipe scaffold. 5, in case of heavy rain, high temperature, lightning and strong winds of magnitude 6 or above, stop scaffold erection and dismantling operations; 6. After strong wind, heavy rain and other weather, organize personnel to check whether the scaffold is shaken or deformed, and handle it in time in case of inclination, sinking, loose wall parts, node connection displacement, safety net falling off and rope opening; 7. The bottom of the vertical pole of the floor-standing steel pipe scaffold is 5mm higher than the natural floor, and it is compacted and leveled, leaving a certain aproll slope, and drainage measures are set around to prevent the scaffold from being soaked by rain; 8. Before the flood season comes, the cantilever frame and attached lifting scaffold shall be provided with reinforcement measures, and the frame body and the building shall be provided with connectors or Rachel measures according to the height of the frame body; (6) Slope foundation pit support 1. Before the rain period, the excess soil on the ditch should be removed to reduce the pressure on the top of the slope; 2. After the rain, the pit, groove, ditch slope and solid wall supporting structure should be inspected in time, and special personnel should be assigned to measure the deep foundation pit and observe the slope situation. If there are dangerous signs such as cracks, looseness, broken supporting structure and walking on the slope, measures should be taken immediately to solve them; 3. When the ramp slips due to rain, the earthwork mechanical operation shall be stopped; 4. Electric blasting earthwork shall not be carried out in the open air in thunderstorm weather. In case of lightning during blasting, both ends of detonator crural line and wire main line shall be connected into short circuit quickly; 5, strengthen the monitoring of the surrounding foundation pit, equipped with enough submersible pump and other drainage facilities, to ensure timely drainage, to prevent the collapse of foundation pit. III. Construction plan for installation project in rainy season (I) Management measures for materials and equipment: Before the rainy season comes, the non-installed equipment and unused materials entering the site shall be protected from rain and dampness: 1. The rain-proof performance of the material warehouse is good, and the humidity in the welding material warehouse should not exceed 6%; 2. The materials in the room should be put on the shelves in a centralized manner and should not be placed directly on the ground; Can't shelves should be overhead and cushion height thickness of not less than 26mm；; 3. Construction equipment and materials placed in the open air should be covered with mats to prevent corrosion caused by flooding and rain. 4. On-site material yards and machine sheds should have drainage facilities, and ditches should be unblocked to ensure that the rain and water stop without affecting the normal construction. 5, construction distribution box, welding machine, etc. All should be set in the special welding machine room; 6. Equipment and pipelines installed in the open air shall ensure that there is no exposure to prevent rainwater from soaking. During the construction of explosion-proof components, rainproof measures should be added; 7. Before the rainy season comes, certain measures should be taken to ensure smooth construction roads. 8, welding materials must be put in storage, welding materials warehouse set up dry and wet thermometer, hold people accountable for welding materials management, and make corresponding records. It is required that the temperature in the welding material warehouse is not lower than 5℃ and the humidity is not higher than 6%. Before welding materials are put into storage, the welding material keeper shall confirm the brand, specification, storage quantity, damage, etc. When put into storage, it should be stacked according to the brand, specification and use position, so as to take it out. Welding materials shall not be unpacked before use, so as to avoid moisture deterioration. When placed, the distance from the wall and the ground shall not be less than 3mm. Welders must fill in the application form for covered electrode, and only one brand of covered electrode can be used at a time, and it shall not exceed 4kg, and at the same time, it shall be collected according to the climate of the day. When used on site, it should be placed in a heat preservation cylinder. The remaining covered electrode and covered electrode heads welded on the same day should be returned to the drying room, and the welding material keeper should re-dry and mark them according to the regulations, and they should be given priority for the next use. Covered electrode drying times shall not exceed 2 times. The welding wire is rusted and cannot be used. After welding every day, remove the remaining welding wire and put it in storage. 9, valves, flanges, bolts, gaskets, flame arresters and other materials should be put into storage partition, shall not be stored in the open air. On-site construction equipment shall be stored as required and shall not be piled up with it. (2) Welding operation 1. Set up a good rain shelter or rain shelter. When welding, the welder is equipped with a covered electrode heat preservation tube to prevent the resurgence and rain in covered electrode; 2. The prefabrication depth should be increased, and most of the prefabrication work should be completed in the prefabricated plant, and an automatic dehumidifier should be set up in the prefabricated plant; When the air humidity exceeds 9%, take corresponding measures, otherwise welding is prohibited; 3. The welding machine shall be well grounded and the welding handle shall be well insulated. Iv. Construction scheme of anticorrosion rainy season 1. During the rainy season, the anticorrosion work is greatly affected, so protection measures should be taken for steel plates, pipes and installation accessories in the rainy season during the anticorrosion construction. If the coating is soaked by rain for a long time, or in the part where the temperature difference between day and night is too large and it is easy to condense, it will be corroded quickly and its service life will be reduced. 2. In view of the problem of high humidity in rainy season, it is necessary to build a temporary construction canopy to prevent the corrosion protection layer from being damaged by rain. When the ambient temperature is lower than 5℃ and higher than 4℃; Too much dust; The temperature of the coated surface is greater than 65℃; When the relative humidity is more than 85%, brushing operation is not allowed, but other anticorrosion works can be carried out, such as the anticorrosion construction of underground pipelines. The pipes after derusting should be immediately anticorrosion, polyethylene adhesive tape should be tightly wound, the bevel angle should be uniform, the lap width should meet the requirements of design specifications, and the polyethylene adhesive tape should be wound smoothly without wrinkles. Self-inspection records should be made during the anticorrosion process, and it can only be used after the anticorrosion is completed. 3, the rainy season construction time, before construction, the application of temperature and humidity detection instrument to detect atmospheric humidity, when the humidity is greater than 85% of the time, no anti-corrosion operation; 4. Derusting, painting and heat preservation in rainy season should be carried out in sunny weather as far as possible, and operation should be stopped in stormy weather without protective measures; 5. If the surface of the object is wet, the surface shall be dried by fire welding and heating, and then painted or insulated; Water immersion and rain should be prevented before the paint film is completely dried. V. Hoisting project in rainy season 1. The component stacking area should be flat and solid, and drainage work should be done around it. It is forbidden to accumulate water and soak in the component stacking area to prevent soil from sticking to the embedded parts; 2, tower crane foundation must be 15 cm higher than the natural ground, it is forbidden to rain soaked foundation; 3, when lifting after the rain, first check the stability of the tower crane itself, confirm the safety of the tower crane itself is not damaged by rain, and then try to lift the component to about 1 meter, and then lift it again after it is stable up and down for many times; 4. Rainy days may affect the driver's sight. If the driver has no experience in lifting in rainy days, it is best to stop lifting. Or ask an experienced driver to do it; When the construction is stopped, the hook of the tower crane should be retracted close to the tower body, and any objects such as slings and building components should not be left on the hook; 5. In rainy days, the friction coefficient between the rope and the component is reduced because the surface of the component and the hoisting rope are wet, which may lead to serious quality and safety accidents such as component slipping. If necessary, measures such as increasing the surface roughness of the rope and the component can be taken; 6, rainy day hoisting should expand the forbidden range of the ground, when necessary, send more people to alert. 7. During hoisting and transportation, special attention should be paid to the road conditions. When necessary, the road should be paved with skids, steel plates and gravel to avoid the construction vehicles and cranes from slipping and sinking. 8. Good communication shall be guaranteed during hoisting operation, and it is strictly prohibited in rainy or foggy weather with bad sight.