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.
Two dimentional mathematical model of tunnel temperature field in condition of diffusion during seam smoldering steady according to heat transfer theory and comservation of mass, momentum and energy. Temperature character of tunnel in condition of diffusion during seam smoldering steady is simulated by COMSOL Multiphysics according to this model. Results show that temperature field in tunnel can be...
A FLAC-3D fluid-solid numerical simulation was performed to analyze the stability and anti-water ability of the waterproof gate. Analysis indicates that under water pressure 10.3MPa, the structure of underground chamber of waterproof gate and surrounding rock mass are under plastic state partially, but are basically stable and usable. In case of water filling in the tunnel, water seepage amount is...
In order to take effective dust removal measurement of transfer point of a coal preparation plant, it is necessary to put forward the optimal dust removal scheme. Production workmanship and dust pollution mechanism of the transfer point in a typical coal preparation plant has been analyzed. Based on the analyses, two feasible dust removal schemes of transfer point, namely the guide-chute dust removal...
The ventilation system is the basis to control the hazards in coal mine laneway. High reliability ventilation system can continuously convey fresh air into laneway , dilute the noxious gas, reduce disaster and ensure the mining productivity safe and effective. As we know that, many noxious gases in the coal mine laneway are compossible and their flowing states are complicated. In order to acquire...
Ventilation interruption in high gas mine during main fan switchover in the way currently-used that working fan stops at first and standby fan starts later is liable to cause gas concentration exceeding limit. In the paper, a novel way to realize ventilation unceasing during main fan switchover is put forward, in which, contrary to the way currently-used, standby fan was required to be started before...
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.