The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The following results are obtained based on the study of in-situ stress measurements using stress relief by overcoring technique and stability of surrounding rock masses in the some deeply buried metal mine: (1) the dominative stress at depth of 820m is tectonic stress and the maximum principal stress is 28.1MPa. The principal stress dispersion is 21.4MPa very big and which is apt to cause the rib...
Large-scale goaf appeared after underground mining, and the widespread connection of the goaf is main reason causing surface subsidence. Surface subsidence is a serious engineering geological disaster impacted on ecological environment, which has plagued the underground mining enterprises at home and abroad. In order to ensure safety mining of the deep level and effectively control surface subsidence,...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.