Sichuan Zigong 5 abandoned salt was blocked near the poison gas disappeared in Beijing creditcard.ccb.com

Sichuan Zigong 5 abandoned salt was blocked near the poison gas disappeared – salt Beijing was successfully blocked Sichuan online news (reporter Luo Huijiang Wu?) August 24th, reporters from the Sichuan Provincial Geological Engineering Exploration Institute was informed that the project integrated management of mine geological environment in Zigong has borne by the hospital has been fully completed, the harmful gas channel 5 abandoned salt was successfully blocked. According to reports, the project for the bittern mine geological environment near the main city of the comprehensive management, is the first in the country. The long-term exploitation of Zigong has left a lot of waste brine well near 2000 bittern mining history, long-term mining left a lot of waste brine bittern (gas) wells. Well, by plugging technology, underground brine and natural gas, sulfur dioxide, hydrogen sulfide and other harmful gases easily along the wellbore abandoned on a string, into the shallow aquifer and even overflow caused by surface, air, water and soil pollution. The comprehensive treatment of mine geological environment bittern, the biggest difficulty lies in the success of a well. In 2014, the province launched the bittern mining geological environment recovery demonstration project, intended for 97 abandoned halogen (gas) wells and well site land restoration governance, three gradually carry out. The first phase of the project of "the big 15 wells and 5 abandoned bittern (gas) wells, through well plugging governance, civil engineering, construction before drilling well site rehabilitation project. Near the site of toxic and harmful gases disappeared according to the Sichuan Provincial Geological Engineering Exploration Institute responsible person, in a period of governance 5 abandoned salt, 4 wells reached a depth of 800 meters to 1500 meters, as well as the long time, the lack of information in the depth of the well structure, earthquake, natural corrosion. The well casing has multiple deformation, fracture, dislocation, bridging. Construction workers take a combination of a variety of well drilling technology, and ultimately reached and exceeded the expected well depth. At present, the first phase of the project 5 wells drilled wells, well sealing governance has been completed, the site after the demolition of houses, the land reclamation project construction. Near the site of toxic and harmful gases have disappeared, which also marks the wells channel has been successfully blocked, achieve the purpose of governance model. It is understood that, with the completion of a project, bittern mining geological environment recovery two demonstration projects will start.相关的主题文章: