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水文地質勘察的工作內容包括

發布日期:2019-02-14  文章來源:always-cieec.cn  作者:保定宇乾巖土

水文地質(zhi)勘測(ce)的作業內(nei)容(rong)包含:


1.水(shui)文地(di)(di)(di)(di)(di)(di)質(zhi)測(ce)(ce)繪。對地(di)(di)(di)(di)(di)(di)下水(shui)和(he)(he)與其有關的(de)(de)各種地(di)(di)(di)(di)(di)(di)質(zhi)現(xian)象(xiang)進行實(shi)地(di)(di)(di)(di)(di)(di)觀(guan)測(ce)(ce)和(he)(he)填圖(tu)作業(ye),包含搜集有關的(de)(de)材料(liao);安置觀(guan)測(ce)(ce)點和(he)(he)觀(guan)測(ce)(ce)線進行實(shi)地(di)(di)(di)(di)(di)(di)調查(cha);測(ce)(ce)定井、泉等(deng)地(di)(di)(di)(di)(di)(di)下水(shui)露頭的(de)(de)流量和(he)(he)水(shui)質(zhi);研究其構成條件,以查(cha)明地(di)(di)(di)(di)(di)(di)下水(shui)的(de)(de)構成、散布、埋藏條件和(he)(he)巖土的(de)(de)含水(shui)性;尋找地(di)(di)(di)(di)(di)(di)下水(shui)的(de)(de)富水(shui)地(di)(di)(di)(di)(di)(di)段,選(xuan)定進一步勘探和(he)(he)實(shi)驗作業(ye)的(de)(de)地(di)(di)(di)(di)(di)(di)址等(deng)。使(shi)用遙(yao)感技術,對衛星相片(pian)和(he)(he)航空相片(pian)進行解譯,以配合水(shui)文地(di)(di)(di)(di)(di)(di)質(zhi)測(ce)(ce)繪,是一種又快又好的(de)(de)辦法,可以進步地(di)(di)(di)(di)(di)(di)上測(ce)(ce)繪的(de)(de)功率和(he)(he)精度。


2.地(di)球物(wu)理勘探(tan)。地(di)球物(wu)理勘探(tan)(簡稱物(wu)探(tan))常(chang)用來(lai)尋找地(di)下水(shui),斷定含水(shui)層(ceng)的(de)方(fang)位,區分(fen)咸水(shui)體和(he)淡水(shui)體界線等。在水(shui)文地(di)質勘探(tan)中(zhong)常(chang)用的(de)地(di)上物(wu)探(tan)辦(ban)法(fa)(fa)(fa)有電(dian)測(ce)深法(fa)(fa)(fa)、電(dian)剖面法(fa)(fa)(fa)、天(tian)然(ran)電(dian)場法(fa)(fa)(fa)、淺層(ceng)地(di)震法(fa)(fa)(fa)、α-徑跡法(fa)(fa)(fa)等。 常(chang)用的(de)鉆井(jing)地(di)球物(wu)理辦(ban)法(fa)(fa)(fa)有電(dian)測(ce)井(jing)法(fa)(fa)(fa)、放射性測(ce)井(jing)法(fa)(fa)(fa)等。物(wu)探(tan)辦(ban)法(fa)(fa)(fa)由于(yu)比較快速、經濟,常(chang)與水(shui)文地(di)質鉆探(tan)和(he)實驗配合(he)進行,使(shi)用物(wu)探(tan)斷定鉆孔和(he)抽水(shui)實驗地(di)址,可(ke)以進步功率。


3.水(shui)文(wen)地(di)質(zhi)實(shi)驗(yan)(yan)。水(shui)文(wen)地(di)質(zhi)實(shi)驗(yan)(yan)的(de)意圖(tu)是(shi)獲得各種參數(shu),為地(di)下水(shui)資源(yuan)評(ping)價或礦山涌水(shui)量核算等提供(gong)根(gen)底材料(liao),包(bao)含抽水(shui)實(shi)驗(yan)(yan)、壓(ya)水(shui)實(shi)驗(yan)(yan)、注水(shui)實(shi)驗(yan)(yan)和彌散實(shi)驗(yan)(yan)等,最(zui)常(chang)用(yong)的(de)是(shi)抽水(shui)實(shi)驗(yan)(yan)。


4.水(shui)(shui)(shui)(shui)文(wen)地(di)質(zhi)鉆(zhan)(zhan)(zhan)探。鉆(zhan)(zhan)(zhan)探的意圖(tu)是(shi)斷定含(han)水(shui)(shui)(shui)(shui)層的方位與散布(bu),以查明地(di)下水(shui)(shui)(shui)(shui)的存(cun)在條件(jian)。所獲(huo)巖心要(yao)(yao)進行詳細編錄(lu),而且使用鉆(zhan)(zhan)(zhan)孔進行抽水(shui)(shui)(shui)(shui)實驗或(huo)其他水(shui)(shui)(shui)(shui)文(wen)地(di)質(zhi)實驗。水(shui)(shui)(shui)(shui)文(wen)地(di)質(zhi)鉆(zhan)(zhan)(zhan)探的要(yao)(yao)求和一(yi)般的礦藏鉆(zhan)(zhan)(zhan)探不同,要(yao)(yao)求有較大的孔徑而且用清水(shui)(shui)(shui)(shui)鉆(zhan)(zhan)(zhan)進。不然使用鉆(zhan)(zhan)(zhan)孔求得的水(shui)(shui)(shui)(shui)文(wen)地(di)質(zhi)參數或(huo)許失真。


5.實驗室分(fen)(fen)析(xi)。在水文(wen)地質(zhi)勘測過程中,要選取水樣、巖樣或土樣進(jin)行實驗室的水質(zhi)分(fen)(fen)析(xi)、粒度分(fen)(fen)析(xi)、孢粉或微體古生(sheng)物分(fen)(fen)析(xi)、同(tong)位素(su)年齡測定(ding)等


6.地下(xia)(xia)水(shui)(shui)(shui)動(dong)態觀測。地下(xia)(xia)水(shui)(shui)(shui)動(dong)態觀測是水(shui)(shui)(shui)文(wen)地質勘測的(de)一(yi)(yi)項(xiang)重要內容。在安置鉆(zhan)探和水(shui)(shui)(shui)文(wen)地質實驗時,就(jiu)要考慮(lv)到保存一(yi)(yi)部分(fen)鉆(zhan)孔用來進(jin)行長期觀測,定時測定地下(xia)(xia)水(shui)(shui)(shui)的(de)水(shui)(shui)(shui)位(wei)、水(shui)(shui)(shui)質和水(shui)(shui)(shui)溫,以便為今后的(de)地下(xia)(xia)水(shui)(shui)(shui)資(zi)源評(ping)價(jia)或其(qi)他(ta)水(shui)(shui)(shui)文(wen)地質核算提(ti)供(gong)根底材料。一(yi)(yi)般要求動(dong)態觀測的(de)時刻(ke)不少于一(yi)(yi)個(ge)水(shui)(shui)(shui)文(wen)年,時刻(ke)系列(lie)愈長愈好。


7.編(bian)制水(shui)(shui)文(wen)(wen)地質(zhi)陳述和(he)圖件(jian)。水(shui)(shui)文(wen)(wen)地質(zhi)勘測的(de)(de)效(xiao)果一般分為(wei)陳述和(he)圖件(jian)兩部分。陳述應(ying)當正確地反映實際的(de)(de)水(shui)(shui)文(wen)(wen)地質(zhi)條件(jian),回答要求處理的(de)(de)問題。圖件(jian)一般是一系列的(de)(de)水(shui)(shui)文(wen)(wen)地質(zhi)圖,依據勘測的(de)(de)意圖、要求的(de)(de)不同,圖件(jian)的(de)(de)數(shu)(shu)量和(he)內容(rong)都(dou)可以不同,常(chang)見的(de)(de)有綜合水(shui)(shui)文(wen)(wen)地質(zhi)圖、地下(xia)水(shui)(shui)等(deng)水(shui)(shui)位線圖、巖石含(han)水(shui)(shui)性(xing)圖、水(shui)(shui)化學(xue)圖、地下(xia)水(shui)(shui)埋(mai)深圖、地下(xia)水(shui)(shui)污染程度圖、水(shui)(shui)文(wen)(wen)地質(zhi)參數(shu)(shu)分區圖等(deng)。

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