山西煤炭
山西煤炭
산서매탄
SHANXI COAL
2015年
3期
50-52
,共3页
高压脉动注水%湿润半径%孔隙率%含水率
高壓脈動註水%濕潤半徑%孔隙率%含水率
고압맥동주수%습윤반경%공극솔%함수솔
high-pressure pulsating water injection%wetting radius%porosity percentage%water content
大采高综采工作面机械化程度高、开采强度大，在煤层开采过程中片帮垮落较严重，采煤工作面配风量大，风速较高，工作面粉尘扩散严重。为从根本上解决大采高工作面的粉尘，长平煤矿采用了大采高工作面长钻孔高压脉动注水技术。根据井下现场实际条件对高压脉动注水方式进行了试验与研究，最终选择适合长平矿厚煤层大采高工作面的煤层注水方式。
大採高綜採工作麵機械化程度高、開採彊度大，在煤層開採過程中片幫垮落較嚴重，採煤工作麵配風量大，風速較高，工作麵粉塵擴散嚴重。為從根本上解決大採高工作麵的粉塵，長平煤礦採用瞭大採高工作麵長鑽孔高壓脈動註水技術。根據井下現場實際條件對高壓脈動註水方式進行瞭試驗與研究，最終選擇適閤長平礦厚煤層大採高工作麵的煤層註水方式。
대채고종채공작면궤계화정도고、개채강도대，재매층개채과정중편방과락교엄중，채매공작면배풍량대，풍속교고，공작면분진확산엄중。위종근본상해결대채고공작면적분진，장평매광채용료대채고공작면장찬공고압맥동주수기술。근거정하현장실제조건대고압맥동주수방식진행료시험여연구，최종선택괄합장평광후매층대채고공작면적매층주수방식。
High mechanized degree and mining intensity of large-mining-height working face cause serious rib spalling and caving, large ventilation distribution quantity, high air speed, and severe coal dust diffusion. To control the dust, high-pressure pulsating water injection with long drilling technology was used in Changping mine. According to the field condition in the mine, the high-pressure pulsating water injection experiment was conducted. Finally, a suitable water injection method was chosen for the large-mining-height mining on thick seam in Changping mine.
