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　　5月(yue)6日，青藏交直流(liu)聯網工(gong)程建(jian)設總指揮部組織中國科學院(yuan)寒(han)區(qu)旱區(qu)環境與工(gong)程研究所(suo)(suo)凍(dong)土(tu)(tu)(tu)工(gong)程國家(jia)重點實(shi)驗(yan)室、中國科院(yuan)寒(han)旱所(suo)(suo)以及相關電力設計(ji)院(yuan)召開了青藏直流(liu)聯網線(xian)路工(gong)程凍(dong)土(tu)(tu)(tu)基(ji)礎(chu)穩定性階(jie)段分析研討會(hui)，對全線(xian)各標(biao)段高原(yuan)凍(dong)土(tu)(tu)(tu)基(ji)礎(chu)觀測數據進行了研討、分析和(he)評價凍(dong)土(tu)(tu)(tu)區(qu)基(ji)礎(chu)穩定現狀，為實(shi)施(shi)架線(xian)轉序(xu)工(gong)作提供依據和(he)指導。經過專家(jia)們的分析、論證，確認了凍(dong)土(tu)(tu)(tu)區(qu)基(ji)礎(chu)基(ji)本穩定，標(biao)志著青藏直流(liu)線(xian)路架線(xian)施(shi)工(gong)即將全面展開。

　　一是(shi)明確青藏(zang)交直流(liu)(liu)聯網工(gong)程(cheng)年(nian)內雙極投(tou)運(yun)“只(zhi)許成功，務(wu)期必(bi)成”的(de)(de)(de)工(gong)作目標。青藏(zang)交直流(liu)(liu)聯網工(gong)程(cheng)凍(dong)土基礎穩定(ding)性是(shi)決(jue)(jue)定(ding)工(gong)程(cheng)關(guan)(guan)鍵(jian)(jian)技術(shu)和關(guan)(guan)鍵(jian)(jian)質量控制點(dian)，是(shi)決(jue)(jue)定(ding)直流(liu)(liu)線(xian)路能否安全(quan)穩定(ding)運(yun)行的(de)(de)(de)關(guan)(guan)鍵(jian)(jian)，各(ge)施工(gong)單位要(yao)充分(fen)認(ren)識工(gong)程(cheng)的(de)(de)(de)重要(yao)性，對工(gong)程(cheng)高原凍(dong)土基礎的(de)(de)(de)關(guan)(guan)鍵(jian)(jian)技術(shu)、關(guan)(guan)鍵(jian)(jian)控制點(dian)要(yao)繼(ji)續進行深(shen)入(ru)研究(jiu)，保證工(gong)程(cheng)建設(she)目標任務(wu)的(de)(de)(de)順(shun)利實現。

　　二是深化(hua)(hua)凍(dong)(dong)(dong)土(tu)(tu)基(ji)(ji)(ji)(ji)(ji)(ji)(ji)礎科(ke)(ke)研(yan)課題的(de)(de)研(yan)究。青藏聯(lian)網(wang)直(zhi)流線路工(gong)(gong)程(cheng)(cheng)凍(dong)(dong)(dong)土(tu)(tu)基(ji)(ji)(ji)(ji)(ji)(ji)(ji)礎隨(sui)著高(gao)原氣候(hou)的(de)(de)變化(hua)(hua)以(yi)及(ji)(ji)(ji)組塔、架線等人為活動(dong)(dong)的(de)(de)干擾，會(hui)對基(ji)(ji)(ji)(ji)(ji)(ji)(ji)礎產生不同程(cheng)(cheng)度(du)的(de)(de)擾動(dong)(dong)，為確保(bao)工(gong)(gong)程(cheng)(cheng)穩(wen)定(ding)運行(xing)目標的(de)(de)實現及(ji)(ji)(ji)工(gong)(gong)程(cheng)(cheng)質(zhi)量控制，科(ke)(ke)研(yan)單位持續(xu)開展(zhan)凍(dong)(dong)(dong)土(tu)(tu)基(ji)(ji)(ji)(ji)(ji)(ji)(ji)礎穩(wen)定(ding)性(xing)分(fen)析(xi)(xi)研(yan)究工(gong)(gong)作，為本工(gong)(gong)程(cheng)(cheng)凍(dong)(dong)(dong)土(tu)(tu)基(ji)(ji)(ji)(ji)(ji)(ji)(ji)礎穩(wen)定(ding)性(xing)分(fen)析(xi)(xi)提(ti)供了科(ke)(ke)學的(de)(de)依據和有效支撐；繼續(xu)深化(hua)(hua)現場基(ji)(ji)(ji)(ji)(ji)(ji)(ji)礎試(shi)驗的(de)(de)研(yan)究，對現場采集的(de)(de)數(shu)據加(jia)大分(fen)析(xi)(xi)力度(du)，及(ji)(ji)(ji)時進(jin)行(xing)仿(fang)真(zhen)計(ji)算(suan)，提(ti)供凍(dong)(dong)(dong)土(tu)(tu)塔基(ji)(ji)(ji)(ji)(ji)(ji)(ji)地溫場、變形場變化(hua)(hua)規律，提(ti)出不同階段(duan)工(gong)(gong)程(cheng)(cheng)穩(wen)定(ding)性(xing)的(de)(de)評價結(jie)果；拓展(zhan)研(yan)究范圍，在不同的(de)(de)受力條件(jian)、環境(jing)溫度(du)變化(hua)(hua)情況下，針(zhen)對塔基(ji)(ji)(ji)(ji)(ji)(ji)(ji)基(ji)(ji)(ji)(ji)(ji)(ji)(ji)礎的(de)(de)受力特(te)性(xing)及(ji)(ji)(ji)穩(wen)定(ding)性(xing)以(yi)及(ji)(ji)(ji)基(ji)(ji)(ji)(ji)(ji)(ji)(ji)礎對周邊環境(jing)影響，建立每一(yi)級(ji)基(ji)(ji)(ji)(ji)(ji)(ji)(ji)礎的(de)(de)檔案(an)資料；5月份是凍(dong)(dong)(dong)土(tu)(tu)基(ji)(ji)(ji)(ji)(ji)(ji)(ji)礎從(cong)凍(dong)(dong)(dong)到融(rong)的(de)(de)關鍵(jian)時期，也(ye)是考驗凍(dong)(dong)(dong)土(tu)(tu)基(ji)(ji)(ji)(ji)(ji)(ji)(ji)礎施工(gong)(gong)質(zhi)量的(de)(de)關鍵(jian)階段(duan)，各施工(gong)(gong)及(ji)(ji)(ji)監理單位要進(jin)一(yi)步加(jia)強基(ji)(ji)(ji)(ji)(ji)(ji)(ji)礎沉(chen)降、位移(yi)動(dong)(dong)態(tai)觀測力度(du)，派(pai)專(zhuan)人做好凍(dong)(dong)(dong)土(tu)(tu)基(ji)(ji)(ji)(ji)(ji)(ji)(ji)礎回(hui)填及(ji)(ji)(ji)融(rong)沉(chen)的(de)(de)巡(xun)視排(pai)查。

　　三是(shi)持續開展(zhan)凍(dong)(dong)土(tu)基(ji)(ji)礎(chu)(chu)(chu)相(xiang)關(guan)(guan)參數(shu)的(de)復核工作。各設(she)計單位要結合(he)地(di)溫(wen)的(de)變化(hua)，動態的(de)對基(ji)(ji)礎(chu)(chu)(chu)的(de)地(di)質條件(jian)及設(she)計參數(shu)進行校核，要特別關(guan)(guan)注高溫(wen)高含(han)冰區域地(di)質條件(jian)變化(hua)對凍(dong)(dong)土(tu)基(ji)(ji)礎(chu)(chu)(chu)的(de)影響，確保(bao)凍(dong)(dong)土(tu)基(ji)(ji)礎(chu)(chu)(chu)的(de)穩定性(xing)。

　　四是繼續進(jin)行樣板引(yin)路，嚴格落(luo)實施工(gong)(gong)(gong)組織方案。針(zhen)對當前氣候(hou)回暖，全(quan)線部分區(qu)域凍土進(jin)入了融(rong)化期，架(jia)線施工(gong)(gong)(gong)將對基礎的穩定(ding)性產生一(yi)定(ding)的影(ying)響，為確保凍土基礎在架(jia)線階段的穩定(ding)性，全(quan)線施工(gong)(gong)(gong)單位將開(kai)展架(jia)線施工(gong)(gong)(gong)科技創新(xin)活動及施工(gong)(gong)(gong)方法研究，推行相關示范工(gong)(gong)(gong)藝樣板引(yin)路，不斷提高施工(gong)(gong)(gong)工(gong)(gong)(gong)藝質量(liang)，提升工(gong)(gong)(gong)程建設(she)品(pin)質。

　　五是深化(hua)凍(dong)土(tu)(tu)(tu)基(ji)(ji)(ji)礎(chu)安全穩(wen)定(ding)性(xing)措施(shi)及(ji)(ji)(ji)預(yu)案。根據(ju)(ju)凍(dong)土(tu)(tu)(tu)基(ji)(ji)(ji)礎(chu)科(ke)研課題(ti)分(fen)析結(jie)果、現場檢查數(shu)據(ju)(ju)以及(ji)(ji)(ji)凍(dong)土(tu)(tu)(tu)基(ji)(ji)(ji)礎(chu)回凍(dong)情況的(de)(de)監(jian)測結(jie)果，青(qing)藏聯網直(zhi)流線路工程(cheng)部分(fen)凍(dong)土(tu)(tu)(tu)基(ji)(ji)(ji)礎(chu)有(you)一(yi)定(ding)的(de)(de)偏差，但在控制(zhi)范圍之內，為保(bao)證凍(dong)土(tu)(tu)(tu)基(ji)(ji)(ji)礎(chu)動態(tai)穩(wen)定(ding)變化(hua)，制(zhi)定(ding)切實有(you)效的(de)(de)安全措施(shi)及(ji)(ji)(ji)應急預(yu)案，確(que)保(bao)高原凍(dong)土(tu)(tu)(tu)基(ji)(ji)(ji)礎(chu)穩(wen)定(ding)性(xing)和運行(xing)的(de)(de)穩(wen)定(ding)性(xing)。

　　六(liu)是根據工(gong)(gong)(gong)程里(li)程碑計劃，總指揮部(bu)加(jia)強對(dui)各(ge)(ge)施(shi)工(gong)(gong)(gong)標段架線施(shi)工(gong)(gong)(gong)組織方(fang)案、二三級網(wang)絡計劃的(de)評審，并全面做好架線轉(zhuan)序(xu)驗(yan)收工(gong)(gong)(gong)作(zuo)，確(que)(que)保架線施(shi)工(gong)(gong)(gong)的(de)有序(xu)開展；各(ge)(ge)施(shi)工(gong)(gong)(gong)單(dan)位根據已審定的(de)方(fang)案合理安排整體工(gong)(gong)(gong)程施(shi)工(gong)(gong)(gong)時(shi)序(xu)，落實人員及機具準備情況，切實確(que)(que)保青藏聯網(wang)工(gong)(gong)(gong)程直(zhi)流線路(lu)架線轉(zhuan)序(xu)有序(xu)進(jin)展。