Core hakowa rijiyoyin for geotechnical bincike

Coring kira hakowa, a cikinsa atisayen fitar da shafi (core) m dutse domin dutse halaka ya auku ne kawai a fuskar zobe. Fasaha hakowa kayan aiki da ake yi sama da ragowa, coring tube, tube adaftan, rawar soja da sandunansu, rawar soja jagora tube da kuma gujiya. Core hakowa samarwa a 1862 Swiss J. Lesho.

Core amfani da hanyar ne cewa shi za a iya fadi na sukar kusan duk dutse coring. Daga cikin zuciyar suna ba da damar samun mafi m bayanai game da ma'aunan kasa sashe. Core hakowa da ake amfani da shi a man fetur da kuma iskar gas hakowa a ma'aunan kasa surveying da zanen taswira ayyukansu. Shi ne ba makawa ga bincike na ma'adinai adibas, kuma sau da yawa yana amfani ga ruwa rijiyoyin, a geochemical nazarin da ma'aunan kasa injiniya safiyo.

Wannan irin hakowa ne classified, dangane da nisa daga kasa rafke barbashi kankara irin hakowa hanyoyin: bushe, kawar da matsa iska, yin amfani da wani wanka ruwa (ruwa ko laka).

Core hakowa da ake amfani da tuki na ƙẽkasasshen yumɓu da kuma ruhlyakovyh m kankara. Tare da ƙwazo reciprocating hakowa bit ROP bushe shi zai zama mafi inganci, amma shafi core ya nàkasasshē muhimmanci, sakamakon gurbataccen bayanai da kuma unacceptable a cikin hali na aikin injiniya da rijiyoyin ana fadi na sukar. Lokacin da tuki a kan argillaceous kankara warware halitta tsarin da kuma zafi saboda da dumama da zuciyar da nakasawa (curling, ko mikewa). Hakowa bushe a kan weathered kankara kuma samar da m bayani a kan mataki na weathering na kankara, babban kuskure ne kuma zai yiwu (a cikin 0.5 m) a cikin definition of Layer iyaka, don haka da mutum yadudduka na dutse tare da wani fitarwa na 0.25 ko fiye (har zuwa 0.5 m ) za a iya tsallake (ba mas'ala) a rubutun bayanai ne da cewa ma unacceptable a geotechnical bincike.

Core hakowa ake amfani da su kawar iska lokacin da tuki weathered dutse, yashi, kuma lãka barga, kuma permafrost. M don amfani da flushing ruwa a wuya dutse da a barga poluskalnyh kankara. Wannan hanya na samar da mai kyau ingancin geotechnical bayanai.

Core hakowa weathered kankara domin mafi kyau adana core ne da za'ayi biyu shafi bututu amfani ko ejector coring projectiles. Species m (har zuwa Category III), matsakaici taurin (category IV -V) da kuma m (V -VIII) ya fadi na sukar carbide rawanin. Domin da wuya dutse (IX - XII) da kuma partially m lu'u-lu'u da ake amfani da harbi kambi. Lokacin da zuciyar hakowa da muhimmanci a kiyaye hakowa yanayin - razruschayuschy axial load a kan kayan aiki, dako gudun (Rev / min) da kuma a kan aiwatar da su ba da damar for flushing girma (l / min) ruwa feed.