Reverse Circulation Water Well Drilling Machine
Reverse circulation drilling is similar to air core drilling as the samples that are drilled up from the earth are not simply placed onto the surface surrounding the machine but the samples are instead shot up into the hollow pipe of the machine. This is one of the biggest benefits of Hydraulic drilling procedure because it prevents the samples from being contaminated from other materials that it might come into contact with once it has been removed from the earth.
The reverse cycle drilling rig Used for low and middle hardness formation of high-speed, high speed rail, Bridges, buildings, wind power, pylons foundation work, also can be used in the field drilling .
Reverse Circulation Water Well Drilling Rig Reverse Circulation Water Well Drilling Machine,Artesian Well Drilling Machine,Reverse Circulation Drilling Rig,Earth Drilling Machine Shandong Hengwang Group Co., Ltd , https://www.hwmac.com
Picture from network
According to Li Chuanrong, the chief expert of the “Earth Observing and Navigation†Special Expert Group, the remote sensing network constructed by dozens of satellites can complete imaging observations at any location in the world within two hours, shortening the data aging time in China's sudden disaster areas by several days. Within 3 hours, the data update time for the monitoring of geographic national conditions in key regions was shortened from 1 year to 1 to 2 months. The observation capability in hotspots has been upgraded from static images to high-definition video with 10 minutes of continuous dynamic gaze.
(Original title: 2-hour observing project anywhere in the world started prototype validation in Shanghai within 4 years)
[China Instrument Network Instrument Research and Development] The national key research and development program "Earth Observation and Navigation" key special project "Distributed Reconfigurable Space Remote Sensing Technology" was launched in Shanghai on November 23. The reporter learned from the project start-up meeting that Shanghai Aerospace Control 9 institutes such as the Institute of Technology plan to develop seven prototypes of small satellites that can be networked and can be formed in the next four years, and demonstrate them on the ground network demonstration system. This satellite has the characteristics of low cost, high performance, reconfigurability, etc. It can build a remote sensing cluster intelligent network. The revisit period of satellites in key regions can be shortened from 1-2 days for conventional large satellites to 2 hours, which is expected to open a new era of remote sensing for China. Nine units will develop three kinds of microsatellites. The first is a census star, which can realize large-scale low- and medium-resolution rapid observations. The second is a detailed survey star. Under the guidance of census stars, it is responsible for high-resolution detailed observations of key areas to obtain high-quality images and More than 150 seconds of continuous gaze in a specific area of ​​high-definition video; the third is a relay star, in the emergency observation task, responsible for transmitting instructions to the satellite outside the monitoring area, and the observation of important data quickly back. "These satellites can connect to a network like mobile phones and WiFi to carry out data communication with each other," said Liu Fucheng, director of the Shanghai Aerospace Control Technology Research Institute. "And any tiny satellite can access or withdraw from the network at any time." Changing the shape of the satellite formation is very flexible."