Tsarin DTH na Ƙungiya

Tsarin Hanyoyin Hako Cluster Down-The-Hole (DTH) yana wakiltar sabuwar fasahar hako mai zurfi da aka tsara don samun rami mai zurfi da yawa a cikin inganta ƙasa da aikace-aikacen daidaita ƙasa. A cikin mahallin bangon ƙasa da labulen katsewa, waɗannan tsarin suna ba da damar masu kwangila su aiwatar da shirye-shiryen hako rami masu fa'ida tare da na'urorin hako da yawa suna aiki tare, wanda ke hanzarta jadawalin aikin don manyan ayyukan daidaita ƙasa. Tsarin Cluster DTH yana samun aikace-aikace a cikin hanyoyin ginin tushe masu zurfi da yawa. A cikin aikin jet grouting, suna ƙirƙirar hanyoyin rami na farko da ake buƙata don tsarin jujjuyawar matakai da yawa a cikin ginin labulen katsewa, inda ginshikan da aka kusan juna ke ƙirƙirar shinge masu ci gaba. Suna tallafawa ginin bangon katsewa da tangents ta hanyar hako rami kafin don sauƙaƙe shigar da ginshiƙai da daidaita ƙasa. A cikin tsarin bangon katsewa na ƙasa-cement-bentonite (SCB), waɗannan tsarin suna ba da ingantaccen hako don shigar da bangon ci gaba. Bugu da ƙari, tsarin cluster suna ba da sabis ga aikace-aikacen haɗakar ƙasa mai zurfi, inda ginshikan ƙasa da aka daidaita da yawa dole ne a ƙirƙira don cimma tsawon tsaye da kwance da ake buƙata. Ka'idar aiki tana haɗa da na'urorin DTH hammer da yawa da aka sanya a kan wani tsarin rig guda, kowanne yana hako tare da juyawa da karfin bugun da aka ba da iska mai matsa lamba daga tsarin compressor na tsakiya. Ba kamar hako na gargajiya ba ko hako kayan kebul, DTH hammers suna aiki a fuskokin bit, suna bayar da ƙarfin tasiri kai tsaye a cikin ramin. Wannan tsari yana haɓaka yawan aikin hako ta hanyar rarraba nauyi a kan rami da yawa yayin da yake kiyaye ingancin ramin da saurin shigarwa. Masu gudanarwa suna tsara hako tare ta hanyar daidaita matsin lamba da sarrafa tsarin abinci na mutum, wanda ke ba da damar tsarin rami tare da daidaitaccen sarari. Tsarin kayan aiki yana bambanta bisa ga bukatun aikin. Tsarin cluster na al'ada yana ɗauke da na'urorin DTH hammer 2-6, yawanci diamita DTH daga 75mm zuwa 165mm, wanda aka sanya a kan na'urorin hako na musamman ko CAT. Ikon compressor yawanci yana tsakanin 600 zuwa 1,200 CFM, tare da tsarin matsa lamba mai ƙarfi (250-350 psi) yana bayar da ingantaccen shigarwa a cikin ƙwayoyin da suka dace. Kayan tallafi sun haɗa da tarin manifold na tsakiya don rarraba iska, hanyoyin abinci na mutum don sarrafa zurfin, da tsarin sarrafa sanduna da suka dace da bututun hako na al'ada (diamita 6-1/4" ko 7-7/8"). Ka'idodin zaɓin tsarin Cluster DTH suna magance buƙatun zurfin hako, ƙwarewar ƙwayar, buƙatun sararin rami da tsarin jujjuyawa, jadawalin aikin, da tsarin aiki. Masu kwangila suna kimanta ƙarfin compressor dangane da aikin hammer na lokaci guda, ingancin amfani da mai don motsi mai tsawo, da samuwar sassan maye. Geology na ƙwayar yana da tasiri mai mahimmanci akan zaɓin hammer—ƙarƙashin dutse da ƙasa suna goyon bayan ƙananan hammers masu yawan bugun, yayin da ƙwayoyin da suka dace ke amfana daga manyan ƙira masu tasiri. Bukatun diamita na rami (yawanci 75-115mm don grouting) suna tantance takamaiman hammers da saitunan matsin iska. Ka'idodin masana'antu da ke jagorantar aikin hako Cluster DTH suna komawa ga ISO 11500 (tsaron kayan aiki), EN 12716 (grouting a cikin dutse), da API RP 65 (manya mafi kyawun aiki). Ka'idodin ƙasa sun haɗa da ASTM D7491 suna magance takamaiman ingancin rami, yayin da DIN 4126 ke bayyana bukatun jet grouting inda ramin da aka hako DTH ke aiki a matsayin hanyoyin jujjuyawa. Masu kwangila dole ne su kula da rajistar hako da ke bayyana zurfin rami, sarari, bayanan ƙwayar, da saitunan matsin iska don nuna bin ka'idodin ƙira da buƙatun tabbatar da ingancin aikin.