August 23, 2022
High-Pressure Rotary Pile Construction Method and Process
A high-pressure rotary pile is a high-pressure rotating nozzle to spray cement slurry into the soil layer and soil mixing, forming a continuous lap cement plus solid. Construction occupies less land, has less vibration, and lower noise, but is easy to pollute the environment, and has a higher cost, for the special, can not make the sprayed slurry solidification of the soil should not be used.
Application range of high-pressure jet grouting pile
1. The high-pressure jet grouting method is suitable for the treatment of silt, muddy soil, flow plastic, soft plastic or plastic clay, silt, sand, loess, plain fill, and gravel soil foundation.
2. When the soil contains more large stone particles, hard clay, contains a large number of plant roots or excessive organic matter, silt, peat soil, and existing buildings collapsible loess foundation reinforcement should be based on field test results to determine its applicability. Its applicability and technical parameters should be determined by a high-pressure jet grouting test.
3. High-pressure jet grouting method, the bedrock and gravel soil pebbles, stones, boulders in the formation of a skeleton structure, groundwater flow rate is too large and has gushed water foundation engineering, groundwater is erosive, should be used carefully.
4. High-pressure jet grouting method can be used for foundation reinforcement of existing buildings and new buildings, deep foundation pit waterproof curtain, slope retaining soil or water retaining, foundation pit bottom reinforcement, preventing piping and uplift, underground large diameter pipeline enclosure and reinforcement, subway engineering soil reinforcement or waterproof, reservoir dam, seawall, river embankment, dam foundation seepage reinforcement, construction of underground reservoir dam and other projects.
Equipped with the intelligent pile guidance system
Pre-construction treatment, main construction equipment, and equipment are ready, high-pressure jet grouting construction technology, in the construction process, cement is tested in batches every 200 T.
Three-axis high-pressure jet grouting pile construction process, measuring pile position: according to the requirements of the drawings, determine the pile position should be an accurate review, pile position into the wood pile or short reinforcement for marking.
The construction technology of a high-pressure jet grouting pile, namely a high-pressure jet grouting pile, uses a high-pressure rotating nozzle to spray cement slurry into the soil and mix it with soil to form continuous overlapping cement and solid.
High-pressure jet grouting pile construction steps: site leveling, measurement, and positioning: put out the construction axis, and confirm the hole position deviation is not greater than 50mm. Drilling rig in place: the drilling rig is stable and firm.
High-pressure jet grouting piles use high-pressure rotary nozzles to inject cement into the soil and mix with the soil to form continuously overlapping cement and solids.
Construction scheme of high-pressure jet grouting pile
Rotary jet grouting pile construction technology, construction technology, high-pressure rotary jet grouting pile construction technology parameter table, construction technology measures, measurement, and positioning, first destroy pavement concrete, and then accurately release the rotary jet grouting pile hole according to the control pile and design drawings.
The special construction scheme of a high-pressure jet grouting pile is a high-pressure jet grouting pile, which uses a high-pressure rotating nozzle to spray cement slurry into the soil and mix it with soil to form a continuous overlap of cement and solid.
The grouting consolidation of the high-pressure jet grouting pile has many quality factors. When using some form of high-pressure jet grouting pipe method, the grouting process is one of the important factors affecting consolidation.
The high-pressure jet grouting method is suitable for treating silt, silt, flow plastic, soft plastic or plastic clay, silt, sand, loess, plain fill, and gravel soil.