煤田地质与勘探
煤田地質與勘探
매전지질여감탐
COAL GEOLOGY & EXPLORATION
2010年
2期
71-75
,共5页
黄华元%冯晓%马春林%丁伯成
黃華元%馮曉%馬春林%丁伯成
황화원%풍효%마춘림%정백성
喷反装置%结构优化%水平孔%吸水效率
噴反裝置%結構優化%水平孔%吸水效率
분반장치%결구우화%수평공%흡수효솔
jet-type reverse circulation tool%structural optimization%horizontal hole%water absorption rate
通过类比相关喷反机具设计,设计并制造了某型喷反装置模型.之后进行了结构优化实验研究,得到了一系列适于现场工况的喷反装置关键器件优化组合,并认识到该类喷反装置中,喉管喷嘴组合模式对吸水效率的影响最大,而流量参数m、间距S对吸水效率的影响较小;喷嘴喷速大于40 m/s时,其吸水效率急剧下降.
通過類比相關噴反機具設計,設計併製造瞭某型噴反裝置模型.之後進行瞭結構優化實驗研究,得到瞭一繫列適于現場工況的噴反裝置關鍵器件優化組閤,併認識到該類噴反裝置中,喉管噴嘴組閤模式對吸水效率的影響最大,而流量參數m、間距S對吸水效率的影響較小;噴嘴噴速大于40 m/s時,其吸水效率急劇下降.
통과류비상관분반궤구설계,설계병제조료모형분반장치모형.지후진행료결구우화실험연구,득도료일계렬괄우현장공황적분반장치관건기건우화조합,병인식도해류분반장치중,후관분취조합모식대흡수효솔적영향최대,이류량삼수m、간거S대흡수효솔적영향교소;분취분속대우40 m/s시,기흡수효솔급극하강.
On the analogy of relevant design, a preliminary design and experimental prototype of jet-type reverse circulation tool was completed, which could be used for horizontal hole. Based on structural optimization experiments and researches, a series of optimized combinations of key components were derived, which were appropriate to in-situ conditions. According to experiment results, some conclusions were drawn as follows: the water absorption rate was most influenced by the mode composed of jet tube and jet nozzle and little influenced by flow parameter m and span S; and when the jetting rate exceeded 40m/s, the water absorption rate decreased sharply.