本文選題：煤礦井下 + 頂板水害防治��； 參考：《西安科技大學(xué)》2017年碩士論文

【摘要】：水害事故嚴(yán)重程度僅次于瓦斯災(zāi)害,是影響礦井安全高效生產(chǎn)的重要災(zāi)害類型之一。神華寧煤集團(tuán)位于我國西北侏羅系裂隙水害代表區(qū)域,尤其是鴛鴦湖、馬家灘等礦區(qū)的部分新建礦井受頂板水害威脅嚴(yán)重。紅柳煤礦是鴛鴦湖礦區(qū)頂板水害的代表,受直羅組砂巖含水層危害,防治水需求緊迫。目前紅柳煤礦主要采用井下物探技術(shù)和大角度上仰常規(guī)鉆孔進(jìn)行頂板含水體探查和疏放,存在探查準(zhǔn)確度低、鉆探治理工程量大、疏水時間短效果差,無法超前區(qū)域治理等不足,不能滿足礦井高效開采需要。本文從紅柳煤礦頂板水害防治需要出發(fā),通過分析礦井地質(zhì)與水文地質(zhì)特征,研究利用井下定向鉆孔進(jìn)行頂板水探放的技術(shù)方法,通過定向鉆孔設(shè)計技術(shù)、成孔工藝技術(shù)和配套鉆進(jìn)裝備研制選型,總結(jié)出一套適用于紅柳煤礦頂板水害防治的井下定向鉆孔鉆進(jìn)技術(shù)與裝備,選擇3121工作面進(jìn)行了技術(shù)應(yīng)用實踐,頂板水探放效果顯著。主要研究工作及成果如下:(1)針對頂板水探放定向鉆孔施工特點,完成了定向鉆孔設(shè)計技術(shù)研究,從鉆孔結(jié)構(gòu)、平面和空間布置方案及軌跡設(shè)計三個方面對頂板水探放定向鉆孔進(jìn)行了合理設(shè)計。(2)本文完成了頂板水探放定向鉆孔成孔工藝研究,綜合采用大直徑螺旋鉆桿回轉(zhuǎn)鉆進(jìn)和螺桿馬達(dá)隨鉆測量定向鉆進(jìn)等兩種技術(shù)方法,完成了頂板水探放定向鉆孔高效高成功率施工,對使用到的各種鉆進(jìn)技術(shù)的原理、鉆具選配和技術(shù)關(guān)鍵點進(jìn)行了分析,保證了大直徑套管下放、巖層大位移定向鉆孔和高精度探查孔快速成孔。(3)結(jié)合頂板水探放定向鉆孔施工需要,完成了配套鉆進(jìn)裝備的研制選型,形成了完善的鉆進(jìn)裝備體系。(4)在紅柳煤礦進(jìn)行了技術(shù)應(yīng)用,驗證了本文研究成果能夠滿足該礦頂板水害防治的需要。施工完成的頂板水探放定向鉆孔既可保證在目的層長距離延伸,又滿足工作面全面積覆蓋無盲區(qū),且能夠加大與頂板含水層、導(dǎo)水裂隙和地質(zhì)構(gòu)造帶的鉆遇率,實鉆最大單孔疏放水量達(dá)到216 m3/h,起到良好的頂板水探放效果。(5)通過對定向鉆孔的探放水量、水質(zhì)和水溫分析,及與常規(guī)鉆孔對比及相鄰工作面施工情況對比,證明采用井下定向鉆孔進(jìn)行頂板水探放的效果明顯,優(yōu)點突出,具有全面推廣價值。
[Abstract]:The severity of water hazard accident is second only to gas disaster, which is one of the important disaster types affecting mine safety and high efficiency production. Shenhua Ning Coal Group is located in the representative area of Jurassic fissure water disaster in northwest China, especially in the mining areas of Yuanyuan Lake and Majiatan, which are seriously threatened by roof water hazards. Hongliu coal mine is the representative of roof water hazard in Yuan-Zhouhu mining area, which is endangered by the sandstone aquifer of Zhiluo formation, so the demand for water prevention and control is urgent. At present, Hongliu coal mine mainly uses downhole geophysical exploration technology and large angle upturned conventional drilling hole to explore and release roof water body, which has low exploration accuracy, large amount of drilling engineering and short hydrophobic time. Unable to lead the area control and other deficiencies, can not meet the needs of high-efficiency mining mine. Based on the needs of roof water hazard prevention in Hongliu Coal Mine, this paper, through analyzing the geological and hydrogeological characteristics of mine, studies the technical method of roof water exploration and release by using directional boreholes, and the design technology of directional drilling. This paper summarizes a set of downhole directional drilling technology and equipment suitable for the prevention and control of roof water hazard in Hongliu Coal Mine. The technical application of 3121 working face has been carried out, and the effect of roof water exploration and release has been remarkable. The main research work and results are as follows: (1) according to the construction characteristics of the directional drilling, the design technology of the directional drilling has been studied, and the structure of the borehole has been studied. Three aspects of plane and space layout scheme and trajectory design have been carried out on the reasonable design of the roof water drilling hole. (2) this paper has completed the research on the hole forming technology of the roof water exploration and drainage directional drilling hole. By adopting two kinds of technical methods, such as rotary drilling with large diameter spiral drill pipe and directional drilling with screw motor while drilling, the high efficiency and high success rate of roof water drilling and directional drilling are completed. The principles of various drilling techniques used are discussed. The selection of drilling tools and the key points of technology are analyzed to ensure the rapid formation of large diameter casing, long displacement directional drilling and high precision drilling. (3) combined with the requirement of roof water exploration and directional drilling, Completed the matching drilling equipment development and selection, formed a complete drilling equipment system. (4) in Hongliu coal mine technology application, verify that the research results can meet the mine roof water hazard prevention needs. The completion of the construction can not only guarantee the long distance extension of the target layer, but also satisfy the full coverage of the face without blind area, and can increase the rate of drilling with the roof aquifer, the water-conducting fissure and the geological structure zone. The maximum thinning capacity of single hole in real drilling reaches 216 m3 / h, which plays a good role in roof water exploration and discharge. (5) through the analysis of water quantity, water quality and water temperature of directional drilling hole, as well as the comparison with conventional drilling hole and the construction situation of adjacent working face, It is proved that the downhole directional borehole is effective in roof water exploration and discharge with outstanding advantages and is worth popularizing in an all-round way.
【學(xué)位授予單位】：西安科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TD745.22

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