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1、uz中華人民共和國地質(zhì)礦產(chǎn)行業(yè)標準Dz/T0132一94鉆孔壓水試驗規(guī)程1994一10一31發(fā)布1995一07一01實施中華人民共和國地質(zhì)礦產(chǎn)部發(fā)布目次硯、1主題內(nèi)容與適用范圍·········”·········“·········，·”························..·..·..·..·..·.??(1J、2試驗方法·“····························??”··········”····································??
2、(1少、.3試段長度······························“·“············”··········································??(1產(chǎn)、，4試驗壓力···································”······”···································??(1產(chǎn)、.5試驗階段···”·”·····??二”······································
3、·“······················??.(12、.6試驗鉆孔與試驗用水··························································”······..·..·.??(1矛、少7試驗設(shè)備與儀表，····················································································??(2、、8洗孔·······················??，’···
4、··························································??(2了、.9試段隔離”···········································，’··············??二~”········??(2尹、.10水位觀測·‘二’··?’二’二‘.................................................................I............“(2產(chǎn)、n壓
5、力與流量觀測······??.!’····.··.·······.·..····‘·····················一t’···.···??(2，、衛(wèi)12資料整理···········································································??(2產(chǎn)、，附錄A條文解釋(參考件)..........................................................................
6、........(5夕中華人民共和國地質(zhì)礦行業(yè)標準Dz/T0132-94鉆孔壓水試驗規(guī)程主題內(nèi)容與適用范圍1.1本規(guī)程規(guī)定了為測定巖體的透水性而進行的鉆孔壓水試驗基本方法。1.2本規(guī)程適用于工程勘察中的鉆孔壓水試驗工作試驗方法2.1本規(guī)程采用呂榮試驗法作為基本的鉆孔壓水試驗方法。2.2鉆孔壓水試驗一般隨鉆孔的加深自上而下地分段進行。3試段長度3.JI試段長度一般為5m.3，L斷層破碎帶，巖溶洞穴等特殊孔段，應(yīng)根據(jù)具體情況確定試段長度。3.C魂J相鄰試段應(yīng)互相銜接。4試驗壓力41壓水試驗采用三級壓力(h
7、,p,p0，一般分別為。.3MPa,0.6MPa和1.OMPae42當試段埋深小于30m或巖體軟弱破碎時，應(yīng)適當降低試驗壓力。43試驗壓力按公式(1)計算P=pr十pz一PS*******"",··，.··········?！ぁぁ?，.，，，·一(1)式中:P試驗壓力，MPa;pp—壓力表指示壓力，MPa;Pz—壓力表中心至壓力計算零線的水柱壓力，MPa;Ps—管路壓力損失，MPa,4.4壓力計算零線的確定方法4.4.1當?shù)叵滤辉谠嚩我韵聲r，壓力計算零線為通過試段中點的水平線。4.4.2當?shù)叵滤辉谠?/p>
8、段以上時，壓力計算零線為地下水位線。4.4-3當?shù)叵滤辉谠嚩我詢?nèi)時，壓力計算零線為通過地下水位以上試段中點的水平線。4.5管路壓力損失宜根據(jù)實測資料確定。試驗階段5.1壓水試驗一般分為五個階段，其試驗壓力分別為P3,p-P3,Pz,PIe5.2當試段的透水率(e)小于1Lu時，可不進行降壓階段的試驗試驗鉆孔與試驗用水5.1壓水試驗鉆孔的孔徑一般為59-150mmo中華人民共和國地質(zhì)礦產(chǎn)部1994一10一31批準1995一07一01實施IDz/T0132
