問：安裝地源熱泵(beng)時，回填有(you)什么要求嗎(ma)？

答：回(hui)(hui)(hui)填(tian)(tian)包括豎(shu)(shu)直下(xia)管和水(shui)平鋪管兩部分，不(bu)管是(shi)那(nei)種(zhong)，在回(hui)(hui)(hui)填(tian)(tian)之(zhi)前必須進行試壓，確保無泄(xie)露。豎(shu)(shu)直下(xia)管回(hui)(hui)(hui)填(tian)(tian)豎(shu)(shu)孔(kong)灌漿材(cai)(cai)料宜采用膨潤(run)土(tu)和細紗的混(hun)合漿或專用材(cai)(cai)料，也可用鉆(zhan)孔(kong)過程(cheng)中產生的泥漿沉淀(dian)物，確保鉆(zhan)孔(kong)灌漿密實，無空(kong)腔，否(fou)則會(hui)降低傳熱(re)效果，影響工程(cheng)質(zhi)量(liang)；水(shui)平鋪管回(hui)(hui)(hui)填(tian)(tian)，土(tu)應(ying)細小、松(song)散、均(jun)勻且(qie)不(bu)含石塊及(ji)土(tu)塊，回(hui)(hui)(hui)填(tian)(tian)壓實過程(cheng)應(ying)均(jun)勻，且(qie)不(bu)得使管道架空(kong)。