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Technological principle of full casing drilling machine in Karst formation
Technological principle Using the rotary device of the JAR full casing full rotary drill, the friction resistance between the steel casing and the soil layer is greatly reduced, and the rotary side is pressed in, while the impact grab bucket and the impact hammer are used to dig the soil until the casing reaches the bearing layer of the pile end. After the excavation is completed, the depth of the excavation is determined immediately, and the bearing layer of the pile end is confirmed, and then the empty soil is removed. After the hole is formed, the steel cage is put in, and then the p
At present, the construction of deep foundation pits in the flood-flat area of the Yangtze River has some problems, such as large ground settlement, large force and deformation after construction, which seriously affects the overall quality of construction projects. In order to promote the sustainable development of building construction, TRD construction method is introduced to study the construction technology design of deep foundation pit in overshoal area. Taking No. 202 Zhongshan North Road underground garage project as an example, TRD construction method and bored pile were used to calcu
Geneva International Exhibition of Inventions
On April 21, the 49th Geneva International Exhibition of Inventions closed in Geneva, Switzerland. This year's invention exhibition attracted more than 1,000 invention projects from nearly 40 countries and regions. The Chinese delegation brought 197 inventions to the exhibition and won a total of 70 gold and 97 silver awards. Xuzhou Jingan Heavy Industry Machinery Manufacturing Co., Ltd. exhibited full casing full rotary drilling equipment won the invention exhibition silver award.
TRD7095 Chain knife type wall forming Machine
On December 9, 2023, China Construction Machinery Industry Association (hereinafter referred to as: Association) organized a meeting in Xuzhou, Jiangsu Province by Xuzhou Jingan Heavy Industry Machinery Manufacturing Co., LTD. (hereinafter referred to as: The "TRD7095 Chain knife type wall forming Machine" and other 2 projects scientific and technological achievements appraisal meeting, It is organized by the Association, Tongji University, Taiyuan University of Science and Technology, Nantong Institute of Technology, Beijing Construction Mechanization Research Institute Co., LTD., Xugong Basi
Lower clearance all in one machine
Low headroom full rotary machine is a kind of mechanical equipment used in building construction, with low headroom height and full rotary function. It can be flexibly operated and turned in a small site space, and is suitable for the working environment of small Spaces such as urban construction and road construction. Low headroom all-in-one machines usually have the following characteristics: 1. Low headroom height: Compared with other types of mechanical equipment, the height of the low headroom full rotary machine is lower, which can adapt to narrow construction space, such a
Construction method of pile foundation engineering
Construction method of pile foundation engineering A method of piling engineering to improve the bearing capacity of soft soil layer. The role of the pile is to transfer the load of the upper building structure to the deep soil with large bearing capacity, and the method of compacting or compacting soft soil can also be used to improve the bearing capacity of the soil, so as to ensure the stability of the building and reduce its settlement. Pile foundation can be divided into two kinds: end-bearing pile and friction pile. The former refers to the pile passing through the soft soil layer
Bridge pile foundation construction equipment
It is an important substitute for other piling equipment under complex formation conditions such as ultra-large diameter and ultra-deep aperture or hard rock. The drill can be drilled in a variety of formations with compressed air gas lift reverse circulation. The so-called gas lift reverse circulation drilling means that compressed air is sent to a certain depth in the well along the double-wall drilling pipe through the mixer injection pipe and mixed with circulating liquid. As the density of the mixed liquid is lower than that of the washout fluid, there is a pressure differe
Principle of slagging of gas lift reverse circulation drill
The slagging principle of gas lift reverse circulation drill is to make use of the characteristics of gas rising faster, by injecting compressed air or nitrogen into the well to improve the gas density at the bottom of the well, so as to form a gas column. When the gas column reaches a certain height, the gravity of the gas column will make the cuttings and mud at the bottom of the well be carried to the well head to achie
First Chinese-made casing rotator
Full rotary drilling rig is a kind of drilling rig used for underground drilling and geotechnical construction. It has full turn function, can drill in horizontal, vertical and inclined directions, and is able to complete complex drilling tasks. The full rotary drill is usually composed of drill pipe, drill bit, drill pipe rotation system, feed system, flushing system and control system. The drill pipe is driven by a rotary system to drill the drill, the feed system controls
Pile foundation construction drilling machine
Air lift reverse circulation drill is a kind of special drilling equipment,engineering machinery,good drilling process, used in the construction of cross-sea bridge, which is mainly used in the foundation construction of bridge pier and pile foundation construction of bridge. In the cross-sea bridge, the foundation construction of bridge pier is a very important step. The traditional construction method requires underwater operators to dig
Construction of vertical pile foundation
Full casing full rotary drilling rig is a kind of drilling equipment used for oil drilling. It uses full-casing drilling technology, that is, during the drilling process, the drill pipe and casing are simultaneously lowered into the well to form a continuous string. Full rotary drilling RIGS can achieve integral rotation, which means that the drill pipe and casing rotate together, thereby improving drilling efficiency and safety. Full casing full rotary drilling rig is usually com
General assembly of drilling tool
1. Quality of drilling tools: The quality of drilling tools directly affects the efficiency and safety of drilling operations. High-quality drilling tools can improve the drilling speed, reduce the occurrence of failures and accidents, and ensure the smooth progress of drilling operations. 2. Drilling tool selection: According to different geological conditions and drilling targets, choosing the right drilling tool can improve drilling efficiency and quality. Different geological conditions
Trench cutting re-mixing deep wall machine
Ditching and mixing deep wall machine, also known as cutting machine mixing machine, is an advanced construction equipment for making deep soil mixing column underground. These machines combine the capabilities of cutting machines and soil mixing equipment, effectively improving the properties of the soil. The process involves digging a trench with a rotating cutting wheel, which cuts through the soil to create a vertical wall. The machine then remixes the excavated soil with a binding material, such as cement or mud, to form a uniform mixture. This mixture is then compacted and
Drill pipe in reverse circulation drilling machine
The drill pipe of the gas lift circulating drill has the following functions: Transfer torque: The drill pipe transmits torque to the drill bit by connecting the drill bit and the rotating device of the rig, so that it can rotate and drill. Supporting drilling fluid pipe: The drill pipe is a part of the drilling fluid pipe to support and fix the drilling fluid pipe to ensure the smooth flow of drilling fluid. Transfer drilling force and wei
Finished drill guide in reverse circulation drilling machine
The role of the bit guide in a gas lift circulating drill is to help the bit keep the correct direction in the hole. It usually consists of one or more guides installed under the drill pipe. As the drill pipe rotates, the guide guides the bit towards the intended hole direction to ensure the accuracy and stability of the hole. The guide reduces the risk of the bit deviating from the target direction, improving drilling efficiency and safety.
High quality Reverse Circulation drilling machine
Gas lift reverse circulation drill is a kind of drill that uses gas pressure to drive the drill pipe to drill. It uses a technique called "gas lift reverse circulation" or "gas lift drilling" to circulate and flush the drilling process through the injection and discharge of high-pressure gas. The working principle of gas lift reverse circulation drilling rig is to use the thrust of high pressure gas to discharge drilling fluid from the bottom of the well, and ca
In the construction, JAR320H full-rotary drilling rig of Jingan Heavy Industry was first used to drill the 2.8-meter diameter steel casing into the stable rock formation with its strong construction torque. The steel casing played the role of pile foundation positioning, and then the JRD300 gas-lift reverse circulation drilling rig of Jingan Heavy Industry was used to drill further to the design depth. The construction method of "full rotation + gas lift reverse circulation"
construction of the cross-sea bridge
Gas lift reverse circulation drilling rig is a kind of special drilling equipment for bridge construction and piling foundation construction. It adopts gas lift technology and reverse circulation drilling technology, and can be used in the construction of cross-telephone bridge. First, the air lift reverse circulation drill requires lifting equipment to be installed on the piers in the bridge to lift the drill to the construction location. The rig then levitates itself above the bridge using gas lift technology to reduce the impact on the bridge. Next, the rig wa
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.