Discussion on Realization of Unmanned Fully Mechanized Mining Technology
نویسندگان
چکیده
منابع مشابه
Green and Sustainable Mining: Underground Coal Mine Fully Mechanized Solid Dense Stowing-Mining Method
China produces and consumes most of coal in the world. This situation is expected to continue within a certain period in the future. Currently, Chinese coal industry is confronted with several serious problems relating to land resource, water resource, environmental, and ecological sustainability. Coal resource exploitation causes the permanent fracture and movement of strata structure, which h...
متن کاملFloor Heave Mechanism of Gob-Side Entry Retaining with Fully-Mechanized Backfilling Mining
Serious floor heave in gob-side entry retaining (GER) with fully-mechanized gangue backfilling mining affects the transportation and ventilation safety of the mine. A theoretical mechanical model for the floor of gob-backfilled GER was established. The effects of the mechanical properties of floor strata, the granular compaction of backfilling area (BFA), the vertical support of roadside suppor...
متن کاملNumerical Analysis and Experimental Study of Hard Roofs in Fully Mechanized Mining Faces under Sleeve Fracturing
Sudden falls of large-area hard roofs in a mined area release a large amount of elastic energy, generate dynamic loads, and cause disasters such as impact ground pressure and gas outbursts. To address these problems, in this study, the sleeve fracturing method (SFM) was applied to weaken a hard roof. The numerical simulation software FLAC3D was used to develop three models based on an analysis ...
متن کاملStrata behavior at fully-mechanized coal mining and solid backfilling face
Taking Ping Dingshan Coal Mine Group 12 as an example, this paper explains the system layout, key equipment and backfilling technology in detail. It probes into the characteristic of rock strata movement behavior and surface deformation above the gob area through in-site measurement method. The results show that as the overburden strata are effectively supported by the backfill body in mined ou...
متن کاملFully Mechanized Proofs of Dilworths Theorem and Mirskys Theorem
We present two fully mechanized proofs of Dilworth’s and Mirsky’s theorems in the Coq proof assistant. Dilworth’s Theorem states that in any finite partially ordered set (poset), the size of a smallest chain cover and a largest antichain are the same. Mirsky’s Theorem is a dual of Dilworth’s Theorem. We formalize the proofs by Perles [2] (for Dilworth’s Theorem) and by Mirsky [5] (for the dual ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: DEStech Transactions on Materials Science and Engineering
سال: 2017
ISSN: 2572-889X
DOI: 10.12783/dtmse/ammme2016/6877