Total number
Full text
Total number
Full text
Number of local repositories
Full text
0213U000810,
0111U008374
,
The physical design of dynamic destruction maximum tense coal with formation of the micronized factions near-by tectonic violation
Dyakun Roman Anatolievich,
28-03-2013
The Polyacov Institute of Geotechnical mechanics of NAS of Ukraine
Object of study - modeling of rock pressure. Purpose - physical simulation to show the influence of unsteady redistribution of the stress-strain state in the corner of a rock mass during mining operations near tectonic disturbances on the process of dynamic fracture of coal to the level of micronized fractions. Research methods - analytical review, technical analysis, comparative assessment and target setting research.First conducted laboratory studies of dynamic fracture is extremely busy with the formation of micronized coal fractions near a tectonic disturbance due to rapid unloading of coal seam coal seam compression array of host rocks. On the model found that the discharge of the compressive stresses near a tectonic disturbance in a high stress concentration at the time of the order of 0.06 s or less is 20-40% of the vertical stress before unloading. The proposed modeling method is extremely busy unloading coal is increasing visibility into the state of stress layers surrounding rocks, which are under the influence of man-made and tectonic zones of high rock pressure. It is shown that the radially-layered dynamic destruction of extremely intense coal to form micronized fractions near a tectonic disturbance can be implemented at the level of the average compressive stress of coal 40-70 MPa, which corresponds to the maximum stress state of the real mountain outburst mines.
Дякун І.Л.
Дякун Р.А.
Подоляк К.К.
Рудь В.П.
Світличний В.М.
2020-04-02
Updated: 2025-12-07
Saving a scientific data set occurs in two stages:
1.) Creating a data set
Enter the name of the set, a brief description of the set (annotation), and click the “Create set” button. After that, a draft data set will be automatically created, which you can save for further work with the set. The system will redirect you to the “Data set information” page.
2.) Filling in the data
On the “Data set information” page, you need to fill in all the fields related to the data set and upload the files.
Please note! Each file is uploaded separately. This is done to ensure the stable operation of the system.
Once you have filled in the information about the scientific data set and added the necessary files, you can save the draft or send the data to the system.
Please note! Once the data has been sent, you cannot change it.
Drafts are necessary for storing the data set and editing it before sending.
All accounts on the NRA website go through a standard registration procedure and are verified. However, in order to obtain additional features, such as publishing open reviews of academic texts, verification by affiliation is required.
To obtain the status “verified”, you must change your primary email address to a corporate one, which is tied to a scientific or educational institution.
For example: user@ukrintei.ua, user@nas.gov.ua
After confirming your corporate email address, your account will be automatically verified by affiliation.
If your email address is corporate, but your account does not have a verification mark, you need to write to us at the email address NRAT@ukrintei.ua. After verification, we will add your address to the database, and your account will be verified.
After completing the verification procedure for affiliation, you can change the primary email address to a convenient one for you, without losing your status during the current verification.
You only need to verify for affiliation once.
* We use corporate addresses from the Unified State Database on Education and the State Register of Scientific Institutions Supported by the State
To search for news published on the official website of NRАT in the “News” section, you need to enter one word, several words, or an exact phrase in the search field. Different terms are separated by spaces.
The search is performed everywhere – in the title and the news text.
For a more comprehensive result, it is recommended to use word stems (parts of words without endings).
When using multiple words for the search, they are combined using one of the logical methods described below.
By default, the logical connector “and” is used. In this case, search results will include all news releases that contain the specified words, even if they are located separately from each other and are in different parts of the text.
Example: Search phrase: OECD report. Search result: all news containing the words “report” and “OECD” in the text and in the title, both together and separately.
If a phrase or phrase is enclosed in quotation marks (“), the results will include all publications where this exact phrase or phrase is found.
Example: Search phrase: “OECD report.” Search result: all news containing the exact phrase “OECD report.”
If you know the publication date of the news or are interested in a specific time frame in which they were published on the website, you can select such a date or date range in the additional field that looks like a calendar. The date is entered in the format year-month-day and confirmed by clicking on the corresponding date in the calendar dropdown. You can enter a date or choose one by browsing through the calendar by months and years. By default, the interval starts from the oldest date (2018-01-23) and ends with the current date.
You can also use one or more hashtags, which are located under the search field on the right side of the “News” page.
Please note: The search for academic texts is carried out in a separate search window at the following link https://nrat.ukrintei.ua/searchdb.
