- Tytuł:
- Study on intensive design and control of chamber group under the condition of weak surrounding rock
- Autorzy:
-
Yang, Jun
Hou, Shilin
Zhou, Kaifang
Qiao, Bowen
Wang, Hongyu
Wei, Qinglong - Powiązania:
- https://bibliotekanauki.pl/articles/88879.pdf
- Data publikacji:
- 2019
- Wydawca:
- Politechnika Wrocławska. Wydział Geoinżynierii, Górnictwa i Geologii. Instytut Górnictwa
- Tematy:
-
deep soft rock
chamber group
intensive design
field test
surrounding rock control - Opis:
- In order to study the design and stability control of deep soft rock chamber group, taking ninth coal mine of Hebi Coal Power Co., Ltd. as the engineering background, The main problem in normal design is analyzed with the combined method of FLAC3D numerical simulation and field engineering test. and then puts forward targeted control measures and carries out field application. The results show that, compared with the conventional design, the intensive design can reduce the stress concentration degree and plastic zone range of the surrounding rock, as well as reduce the quantities. Compared with conventional supporting schemes, the surrounding rock deformation greatly reduces by more than 82% after adopting bolting and shotcreting with wire mesh + anchor cable + floor anchor supporting. Among them, the floor heave control has obvious effect, and the decreasing amplitude reaches more than 93%. The field application shows that the surrounding rock deformation of the main chamber is within the allowable range, and the chamber control effect is good. Therefore, the research results can provide reference for the design and control of similar chamber groups.
- Źródło:
-
Mining Science; 2019, 26; 223-240
2300-9586
2353-5423 - Pojawia się w:
- Mining Science
- Dostawca treści:
- Biblioteka Nauki
Artykuł