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　　5月6日，青(qing)藏交直(zhi)(zhi)流(liu)聯網工(gong)程(cheng)建設(she)總指(zhi)揮部(bu)組(zu)織中(zhong)國科學院寒(han)區旱區環(huan)境與工(gong)程(cheng)研究所(suo)凍土(tu)工(gong)程(cheng)國家重點(dian)實驗室、中(zhong)國科院寒(han)旱所(suo)以及(ji)相關電(dian)力設(she)計院召(zhao)開了青(qing)藏直(zhi)(zhi)流(liu)聯網線路工(gong)程(cheng)凍土(tu)基(ji)(ji)礎穩定性階段分析(xi)研討(tao)會，對全(quan)線各標段高原凍土(tu)基(ji)(ji)礎觀(guan)測數(shu)據(ju)進行(xing)了研討(tao)、分析(xi)和評價凍土(tu)區基(ji)(ji)礎穩定現狀，為實施(shi)架(jia)線轉序工(gong)作提供(gong)依據(ju)和指(zhi)導。經過專家們(men)的分析(xi)、論(lun)證，確(que)認了凍土(tu)區基(ji)(ji)礎基(ji)(ji)本穩定，標志著青(qing)藏直(zhi)(zhi)流(liu)線路架(jia)線施(shi)工(gong)即將全(quan)面展開。

　　一是(shi)明(ming)確青(qing)藏交直流聯(lian)網工(gong)(gong)程(cheng)年內(nei)雙極投運“只(zhi)許成功(gong)，務(wu)期(qi)必(bi)成”的(de)工(gong)(gong)作目標(biao)。青(qing)藏交直流聯(lian)網工(gong)(gong)程(cheng)凍土(tu)(tu)基礎穩定性(xing)是(shi)決(jue)定工(gong)(gong)程(cheng)關鍵技(ji)(ji)術和(he)關鍵質量(liang)控(kong)制(zhi)點，是(shi)決(jue)定直流線(xian)路能(neng)否安全穩定運行(xing)的(de)關鍵，各施工(gong)(gong)單(dan)位要(yao)(yao)充分認識(shi)工(gong)(gong)程(cheng)的(de)重(zhong)要(yao)(yao)性(xing)，對工(gong)(gong)程(cheng)高原凍土(tu)(tu)基礎的(de)關鍵技(ji)(ji)術、關鍵控(kong)制(zhi)點要(yao)(yao)繼續進行(xing)深入研究，保證工(gong)(gong)程(cheng)建設(she)目標(biao)任務(wu)的(de)順(shun)利實(shi)現。

　　二是(shi)深(shen)化(hua)凍(dong)(dong)(dong)土(tu)基(ji)(ji)(ji)礎(chu)(chu)(chu)(chu)科研課(ke)題的(de)(de)(de)研究。青(qing)藏聯網直(zhi)流(liu)線路(lu)工(gong)程(cheng)凍(dong)(dong)(dong)土(tu)基(ji)(ji)(ji)礎(chu)(chu)(chu)(chu)隨著高原氣候的(de)(de)(de)變(bian)化(hua)以及(ji)(ji)組塔(ta)、架線等(deng)人為(wei)活(huo)動(dong)(dong)的(de)(de)(de)干(gan)擾，會(hui)對基(ji)(ji)(ji)礎(chu)(chu)(chu)(chu)產(chan)生不同程(cheng)度(du)的(de)(de)(de)擾動(dong)(dong)，為(wei)確保工(gong)程(cheng)穩(wen)定(ding)(ding)運行目標的(de)(de)(de)實現及(ji)(ji)工(gong)程(cheng)質量(liang)(liang)控制，科研單(dan)(dan)位(wei)持(chi)續(xu)開展凍(dong)(dong)(dong)土(tu)基(ji)(ji)(ji)礎(chu)(chu)(chu)(chu)穩(wen)定(ding)(ding)性(xing)(xing)分析研究工(gong)作，為(wei)本工(gong)程(cheng)凍(dong)(dong)(dong)土(tu)基(ji)(ji)(ji)礎(chu)(chu)(chu)(chu)穩(wen)定(ding)(ding)性(xing)(xing)分析提供了科學的(de)(de)(de)依據和有效支撐；繼續(xu)深(shen)化(hua)現場基(ji)(ji)(ji)礎(chu)(chu)(chu)(chu)試(shi)驗的(de)(de)(de)研究，對現場采(cai)集的(de)(de)(de)數(shu)據加大(da)分析力(li)度(du)，及(ji)(ji)時進(jin)(jin)行仿真(zhen)計(ji)算，提供凍(dong)(dong)(dong)土(tu)塔(ta)基(ji)(ji)(ji)地溫場、變(bian)形場變(bian)化(hua)規(gui)律，提出(chu)不同階(jie)段工(gong)程(cheng)穩(wen)定(ding)(ding)性(xing)(xing)的(de)(de)(de)評價(jia)結果；拓(tuo)展研究范圍，在不同的(de)(de)(de)受(shou)力(li)條件、環境(jing)溫度(du)變(bian)化(hua)情況下，針對塔(ta)基(ji)(ji)(ji)基(ji)(ji)(ji)礎(chu)(chu)(chu)(chu)的(de)(de)(de)受(shou)力(li)特性(xing)(xing)及(ji)(ji)穩(wen)定(ding)(ding)性(xing)(xing)以及(ji)(ji)基(ji)(ji)(ji)礎(chu)(chu)(chu)(chu)對周邊環境(jing)影響，建(jian)立每一(yi)級基(ji)(ji)(ji)礎(chu)(chu)(chu)(chu)的(de)(de)(de)檔案資料；5月份是(shi)凍(dong)(dong)(dong)土(tu)基(ji)(ji)(ji)礎(chu)(chu)(chu)(chu)從凍(dong)(dong)(dong)到(dao)融的(de)(de)(de)關鍵(jian)時期(qi)，也是(shi)考(kao)驗凍(dong)(dong)(dong)土(tu)基(ji)(ji)(ji)礎(chu)(chu)(chu)(chu)施工(gong)質量(liang)(liang)的(de)(de)(de)關鍵(jian)階(jie)段，各施工(gong)及(ji)(ji)監理單(dan)(dan)位(wei)要(yao)進(jin)(jin)一(yi)步加強基(ji)(ji)(ji)礎(chu)(chu)(chu)(chu)沉降、位(wei)移動(dong)(dong)態觀測力(li)度(du)，派(pai)專人做好凍(dong)(dong)(dong)土(tu)基(ji)(ji)(ji)礎(chu)(chu)(chu)(chu)回填(tian)及(ji)(ji)融沉的(de)(de)(de)巡視排查(cha)。

　　三是持續開展凍(dong)土基礎(chu)相關參數(shu)的(de)復核工作。各設計單位要結合地(di)溫的(de)變化，動態的(de)對(dui)基礎(chu)的(de)地(di)質條件及設計參數(shu)進行(xing)校核，要特別(bie)關注(zhu)高(gao)溫高(gao)含冰區域(yu)地(di)質條件變化對(dui)凍(dong)土基礎(chu)的(de)影響，確保凍(dong)土基礎(chu)的(de)穩定性。

　　四是(shi)繼續進行(xing)樣(yang)板引路(lu)，嚴格落實施工組(zu)織方(fang)案。針(zhen)對(dui)當前氣候(hou)回暖，全(quan)線部分(fen)區(qu)域(yu)凍(dong)土進入了融化(hua)期，架線施工將對(dui)基礎的穩(wen)(wen)定性產生一定的影響，為確保凍(dong)土基礎在(zai)架線階(jie)段的穩(wen)(wen)定性，全(quan)線施工單位將開展架線施工科技創新(xin)活(huo)動及施工方(fang)法研究，推行(xing)相關示范工藝(yi)樣(yang)板引路(lu)，不斷提高施工工藝(yi)質量(liang)，提升工程建設品質。

　　五是深化(hua)凍(dong)土(tu)(tu)基(ji)礎(chu)(chu)(chu)安全(quan)穩(wen)定性措(cuo)施及(ji)預(yu)案。根據(ju)凍(dong)土(tu)(tu)基(ji)礎(chu)(chu)(chu)科研課題(ti)分(fen)析結(jie)果(guo)、現場(chang)檢查(cha)數據(ju)以(yi)及(ji)凍(dong)土(tu)(tu)基(ji)礎(chu)(chu)(chu)回凍(dong)情況的(de)監測結(jie)果(guo)，青藏聯網直流線路工程部分(fen)凍(dong)土(tu)(tu)基(ji)礎(chu)(chu)(chu)有一定的(de)偏(pian)差，但在控制(zhi)范圍之內，為保(bao)證凍(dong)土(tu)(tu)基(ji)礎(chu)(chu)(chu)動態穩(wen)定變(bian)化(hua)，制(zhi)定切實有效的(de)安全(quan)措(cuo)施及(ji)應(ying)急預(yu)案，確保(bao)高原凍(dong)土(tu)(tu)基(ji)礎(chu)(chu)(chu)穩(wen)定性和運行(xing)的(de)穩(wen)定性。

　　六是(shi)根據(ju)工(gong)(gong)(gong)程里程碑(bei)計劃，總指(zhi)揮部(bu)加強對各(ge)施(shi)(shi)工(gong)(gong)(gong)標(biao)段架線(xian)施(shi)(shi)工(gong)(gong)(gong)組織(zhi)方(fang)案、二(er)三(san)級網絡計劃的評(ping)審(shen)(shen)，并全面(mian)做(zuo)好架線(xian)轉(zhuan)序(xu)驗收(shou)工(gong)(gong)(gong)作，確(que)保架線(xian)施(shi)(shi)工(gong)(gong)(gong)的有序(xu)開展(zhan)；各(ge)施(shi)(shi)工(gong)(gong)(gong)單位(wei)根據(ju)已審(shen)(shen)定的方(fang)案合理安排整體工(gong)(gong)(gong)程施(shi)(shi)工(gong)(gong)(gong)時序(xu)，落實人員及機具準備(bei)情(qing)況，切實確(que)保青藏(zang)聯網工(gong)(gong)(gong)程直流線(xian)路架線(xian)轉(zhuan)序(xu)有序(xu)進展(zhan)。