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How to remove pile head
The Contractor shall use crack inducer or equivalent low noise method for removal of pile head to cut-off level. The Contractor shall preinstall crack inducer to effectively render crack on the pile at about 100 – 300 mm above the pile head cut off level. The pile starter bars above this le...Read more -
What if shrinkage occurs during drilling?
1. Quality problems and phenomena When using a borehole probe to check for holes, the hole probe is blocked when lowered to a certain part, and the bottom of the hole cannot be inspected smoothly. The diameter of a part of the drilling is less than the design requirements, or from a certain part,...Read more -
10 basic requirements for deep foundation pit support construction
1. The construction plan of deep foundation pit enclosure must be determined according to the design requirements, depth and site environmental engineering progress. After spinning, the construction plan shall be approved by the chief engineer of the unit and submitted to the chief supervision en...Read more -
How can the foundation be prevented from slipping or tilting when the foundation is geologically uneven?
1. Quality problems and phenomena The foundation slips or tilts. 2. Cause analysis 1) The bearing capacity of the base is not uniform, causing the foundation to tilt to the side with less bearing capacity. 2) The foundation is located on the inclined surface, and the f...Read more -
How to deal with hole collapse during drilling?
1. Quality problems and phenomena Wall collapse during drilling or after hole formation. 2. Cause analysis 1) Due to the small mud consistency, poor wall protection effect, water leakage; Or the shell is buried shallow, or the surrounding sealing is not dense and there is wat...Read more -
How to ensure the pouring quality of the dug pile concrete?
1. Quality problems and phenomena Concrete segregation; The strength of concrete is insufficient. 2. Cause analysis 1) There are problems with concrete raw materials and mix ratio, or insufficient mixing time. 2) No strings are used when injecting concrete, or the dist...Read more -
How to deal with the perpendicularity deviation of bored pile by rotary drilling rig
1. Project overview The project adopts open-cut construction. If the depth of foundation pit is greater than 3 meters and less than 5 meters, the supporting structure is supported by φ0.7m*0.5m cement soil mixing pile gravity retaining wall. When the depth of foundation pit is greater than 5 mete...Read more -
Super Rig : SD2200
SD2200 is a multi-functional full-hydraulic pile machine with advanced international technology. lt can not only drill bored piles. percussion drilling. dynamic compaction on soft foundation, but also has all the functions of rotary drilling rig and crawler crane. lt also surpasses the traditiona...Read more -
Why do electric rotary drilling rig?
Each diesel rotary drilling rig, that is equivalent to 351 cars. The electric rotary drilling rig can realize pure electric operation. In the mode of pure electric operation, the battery or the power grid can provide power to the equipment and realize zero emission. The electric rotary drilling r...Read more -
Used rotary drilling rig and piling machine for sale
Sinovo have many units reconditioned rotary drillings with good working condition for sale. Brand CRRC , Sany, XCMG, Sunward; Model： TR220D TR250D TR280D mounted on original CAT base Manufacture Year: 2015 Year Working hours: 5600-8500 working hours Model: Sany Model: SR155 Manufacture Year: 201...Read more -
TRD Method . Process Principle
1、Principle: After the chain-blade cutting tool is cut vertically and continuously to the design depth, it is pushed horizontally and injected with cement slurry to form a continuous, equal thickness and seamless cement wall ; 2、Insert core material (H-shaped steel, etc.) into the cement mixing...Read more -
How to refurbished rotary drilling rig by Sinovo
How to refurbished rotary drilling rig by Sinovo Inspection details of Rotary drilling rig Standardized inspection procedures, standard inspection indicators, the total of 34 major items, approximately 170 inspection points, and the overall condition of the machine is clear at a glance. Maximum p...Read more
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