Matches in SemOpenAlex for { <https://semopenalex.org/work/W2352685554> ?p ?o ?g. }
Showing items 1 to 68 of
68
with 100 items per page.
- W2352685554 abstract "The main problems of the large-diameter DTH hammer pneumatic reverse circulation are the incompleteness of gas carried rock fragments and the difficulty of controlling ground gas pressure.In order to solve these problems,drilling circulation system gas flow parameters,or the velocity and pressure distribution,have been researched.On the basis of characteristics of the fluid channel,the flow fields are zoned.According to the opposite direction of the gas circulation system,gas velocity and fluid pressure calculation formula in the zoned flow field are derived using retrograde method,combined to get the fluid parameter mathematical model.Based on the mathematical model,the project examples are calculated.A hard rock drilling hole with 1.2 m in diameter and 40 m in depth can work as an example.The drilling exit velocity is 40 m/s,while drill bit nozzles gas flow for 456 m/s.The bit nozzle cross-sectional area is 0.002 4 m2,the orifice gas injection pressure is 1.2 MPa,and the circulatory system pressure drop is about 0.9 MPa.The results show that the model could provide the theoretical basis for the adjustment of ground-air parameters and the optimization nozzle structure." @default.
- W2352685554 created "2016-06-24" @default.
- W2352685554 creator A5089095553 @default.
- W2352685554 date "2011-01-01" @default.
- W2352685554 modified "2023-09-24" @default.
- W2352685554 title "Velocity and Pressure Model of Large-Diameter DTH Hammer Pneumatic Reverse Circulation Fluid" @default.
- W2352685554 hasPublicationYear "2011" @default.
- W2352685554 type Work @default.
- W2352685554 sameAs 2352685554 @default.
- W2352685554 citedByCount "2" @default.
- W2352685554 countsByYear W23526855542015 @default.
- W2352685554 crossrefType "journal-article" @default.
- W2352685554 hasAuthorship W2352685554A5089095553 @default.
- W2352685554 hasConcept C114088122 @default.
- W2352685554 hasConcept C121332964 @default.
- W2352685554 hasConcept C127313418 @default.
- W2352685554 hasConcept C127413603 @default.
- W2352685554 hasConcept C141813653 @default.
- W2352685554 hasConcept C152068911 @default.
- W2352685554 hasConcept C194242075 @default.
- W2352685554 hasConcept C25197100 @default.
- W2352685554 hasConcept C38349280 @default.
- W2352685554 hasConcept C56200935 @default.
- W2352685554 hasConcept C57879066 @default.
- W2352685554 hasConcept C78519656 @default.
- W2352685554 hasConcept C78762247 @default.
- W2352685554 hasConcept C90278072 @default.
- W2352685554 hasConceptScore W2352685554C114088122 @default.
- W2352685554 hasConceptScore W2352685554C121332964 @default.
- W2352685554 hasConceptScore W2352685554C127313418 @default.
- W2352685554 hasConceptScore W2352685554C127413603 @default.
- W2352685554 hasConceptScore W2352685554C141813653 @default.
- W2352685554 hasConceptScore W2352685554C152068911 @default.
- W2352685554 hasConceptScore W2352685554C194242075 @default.
- W2352685554 hasConceptScore W2352685554C25197100 @default.
- W2352685554 hasConceptScore W2352685554C38349280 @default.
- W2352685554 hasConceptScore W2352685554C56200935 @default.
- W2352685554 hasConceptScore W2352685554C57879066 @default.
- W2352685554 hasConceptScore W2352685554C78519656 @default.
- W2352685554 hasConceptScore W2352685554C78762247 @default.
- W2352685554 hasConceptScore W2352685554C90278072 @default.
- W2352685554 hasLocation W23526855541 @default.
- W2352685554 hasOpenAccess W2352685554 @default.
- W2352685554 hasPrimaryLocation W23526855541 @default.
- W2352685554 hasRelatedWork W2023541058 @default.
- W2352685554 hasRelatedWork W2034388731 @default.
- W2352685554 hasRelatedWork W2111212131 @default.
- W2352685554 hasRelatedWork W2117341894 @default.
- W2352685554 hasRelatedWork W2352181991 @default.
- W2352685554 hasRelatedWork W2360109692 @default.
- W2352685554 hasRelatedWork W2363744714 @default.
- W2352685554 hasRelatedWork W2366468276 @default.
- W2352685554 hasRelatedWork W2375753655 @default.
- W2352685554 hasRelatedWork W2380328512 @default.
- W2352685554 hasRelatedWork W2383116196 @default.
- W2352685554 hasRelatedWork W2383644895 @default.
- W2352685554 hasRelatedWork W2499257082 @default.
- W2352685554 hasRelatedWork W2754354097 @default.
- W2352685554 hasRelatedWork W2781505027 @default.
- W2352685554 hasRelatedWork W2907689731 @default.
- W2352685554 hasRelatedWork W3188397897 @default.
- W2352685554 hasRelatedWork W2088532702 @default.
- W2352685554 hasRelatedWork W2848084384 @default.
- W2352685554 hasRelatedWork W3026739841 @default.
- W2352685554 isParatext "false" @default.
- W2352685554 isRetracted "false" @default.
- W2352685554 magId "2352685554" @default.
- W2352685554 workType "article" @default.