湖南某金礦zk0202鉆孔工程設(shè)計(jì)及孔斜控制畢業(yè)論文

1、湖南某金礦ZK0202鉆孔工程設(shè)計(jì)及孔斜控制摘要湖南某金礦ZK0202鉆孔，位于湖南省岳陽(yáng)市平江縣長(zhǎng)壽鎮(zhèn)黃金洞鄉(xiāng)楊山莊，地處山區(qū)，區(qū)內(nèi)構(gòu)造變形強(qiáng)烈，褶皺、韌性剪切帶、斷層、劈理、面理廣泛發(fā)育，構(gòu)成了本區(qū)復(fù)雜的構(gòu)造格局。在這樣的地質(zhì)條件下進(jìn)行鉆孔施工，需要進(jìn)行嚴(yán)格的工程設(shè)計(jì)。采用金剛石繩索取芯鉆進(jìn)方法。首先在鉆孔結(jié)構(gòu)設(shè)計(jì)方面采用三級(jí)孔身結(jié)構(gòu)，采用Ф91mm的鉆頭開(kāi)孔至6m，下入Ф89mm孔口管；中間孔段用直徑為Ф75mm的鉆頭鉆進(jìn)至152

2、m，下入Ф73mm套管；終孔段用Ф59mm的鉆頭鉆進(jìn)至終孔。選擇地質(zhì)系統(tǒng)液壓立軸式巖心鉆機(jī)XY5型巖心鉆機(jī)、國(guó)內(nèi)往復(fù)式泥漿泵BW250型、直徑為5cm的供水管、鉆機(jī)動(dòng)力用Y250M4電動(dòng)機(jī)、取芯設(shè)備電動(dòng)機(jī)采用Y132S4型、選擇功率大于190kw的發(fā)電機(jī)組、采用S59型繩索取芯鉆具、鉆塔選擇SG18，附屬設(shè)備包括小口徑金剛石鉆進(jìn)用水龍頭、普通提引器、JW1型泥漿攪拌機(jī)、木馬夾持器。管材使用金剛石繩索取芯專用管材。選擇金剛石繩索取芯雙管鉆

3、頭。Ф59mm孔段鉆壓控制在4.5～8.5KN、轉(zhuǎn)速控制在600～1200KN、沖洗液泵量控制在30～45Lmin。Ф75mm孔段鉆壓控制在6～10KN、轉(zhuǎn)速控制在400～850KN、沖洗液泵量控制在40～60Lmin。Ф91mm孔段鉆壓控制在8～15KN、轉(zhuǎn)速控制在350～700KN、沖洗液泵量控制在50～70Lmin。泥漿采用泡沫泥漿配方為：高陽(yáng)土4～5%；7%；CMC0.2～0.3%；PHP200～Na2CO3300ppm；DF1

4、發(fā)泡劑150～200ppm。為了解決鉆孔偏斜嚴(yán)重的問(wèn)題，對(duì)造成孔斜的原因進(jìn)行分析，采取必要的防斜手段。首先設(shè)備安裝及開(kāi)孔質(zhì)量必須做好。再者在鉆遇強(qiáng)造斜孔段采用下限鉆壓及轉(zhuǎn)速，即75mm孔段采用鉆壓6KN、轉(zhuǎn)速355rmin，59mm孔段采用鉆壓4.5KN、轉(zhuǎn)速577rmin。最后在鉆具的組合上采用滿眼鉆具防斜，合理的連接扶正器，75mm孔段上扶正器至鉆頭的距離為9.37m；中扶正器至鉆頭的距離為3.7m。下扶正器距鉆頭1m；59mm孔段

5、上扶正器至鉆頭的距離為7.72m；中扶正器至鉆頭的距離為3.09m。下扶正器距鉆頭1m。關(guān)鍵詞：鉆孔工程設(shè)計(jì)孔斜控制滿眼鉆具扶正器I目錄第1章前言...................................................................................................................11.1畢業(yè)設(shè)計(jì)的目的.....................

6、.......................................................................11.2畢業(yè)設(shè)計(jì)的內(nèi)容要點(diǎn)....................................................................................11.3畢業(yè)設(shè)計(jì)的任務(wù).........................................

7、...................................................1第2章工程概況...........................................................................................................22.1礦區(qū)自然地理............................................

8、....................................................22.2礦區(qū)交通條件................................................................................................32.3生活及工作條件...................................................

9、.........................................32.4鉆孔目的及要求...........................................................................................42.4.1鉆孔目的...................................................................

10、.........................42.4.2鉆孔要求............................................................................................42.5設(shè)計(jì)鉆孔地層情況.................................................................................

11、.......4第3章鉆孔結(jié)構(gòu)設(shè)計(jì)...................................................................................................53.1確定鉆孔結(jié)構(gòu)的原則....................................................................................53.2鉆孔結(jié)

12、構(gòu)設(shè)計(jì)................................................................................................5第4章鉆探設(shè)備及器材...............................................................................................64.1鉆機(jī)選擇.......

13、.................................................................................................64.2泥漿泵............................................................................................................74.2.1泥漿

14、泵的流量計(jì)算............................................................................74.3供水泵及供水管............................................................................................84.4動(dòng)力機(jī)............................

15、................................................................................94.4.1鉆機(jī)用電動(dòng)機(jī)的型號(hào)和技術(shù)參數(shù)....................................................94.4.2取芯設(shè)備用電動(dòng)機(jī)的型號(hào)和技術(shù)參數(shù)............................................94

16、.5發(fā)電機(jī)組功率選擇........................................................................................94.6繩索取芯設(shè)備..............................................................................................104.6.1S59型繩索取芯鉆具.

17、...................................................................104.7鉆塔..............................................................................................................104.7.1塔高選擇.........................

18、.................................................................104.7.2鉆塔負(fù)荷量計(jì)算..............................................................................114.8附屬設(shè)備......................................................

19、................................................124.8.1水龍頭..............................................................................................124.8.2吸水管和高壓送水管....................................................

20、..................124.8.3提引器..............................................................................................134.8.4泥漿攪拌機(jī)......................................................................................

21、134.8.5滑車裝置的選擇..............................................................................134.8.6天車荷載計(jì)算及鉆塔校核..............................................................144.8.7夾持器......................................

22、........................................................144.9鉆探管材選擇..............................................................................................14第5章鉆機(jī)場(chǎng)的修建及設(shè)備的安裝..........................................

23、...............................165.1鉆探機(jī)場(chǎng)的修建..........................................................................................165.2設(shè)備的安裝與布置..........................................................................