本文選題：頂板含水層 + 疏水鉆孔��； 參考：《煤炭工程》2017年01期

【摘要】：為優(yōu)化疏水鉆孔布置與設(shè)計(jì),提高鉆孔疏放水實(shí)效,對(duì)開(kāi)灤東歡坨礦北二采區(qū)8煤層頂板含水層疏水孔的出水規(guī)律性開(kāi)展研究。理論分析了向斜仰起端構(gòu)造控制下8煤層頂板充水含水層段賦存與富水規(guī)律,統(tǒng)計(jì)了32個(gè)疏水鉆孔疏水量及其6個(gè)影響指標(biāo),研究了疏水量 時(shí)間動(dòng)態(tài)特征、疏水量與影響因素之間的相關(guān)性。結(jié)果表明:針對(duì)8煤層頂板煤5以上0~30m范圍內(nèi)的沿傾向順層水力聯(lián)系好,沿走向水力聯(lián)系差的直接充水含水層段,宜沿巷道走向分散布設(shè)鉆窩,上下巷道鉆窩宜錯(cuò)列布置;6個(gè)指標(biāo)中鉆孔的位置、鉆孔初放水時(shí)間對(duì)鉆孔出水量影響最為顯著,鉆孔與裂隙發(fā)育方向的關(guān)系對(duì)出水量也有明顯影響;該區(qū)域疏水超前時(shí)間宜為8~10個(gè)月。
[Abstract]:In order to optimize the arrangement and design of hydrophobic boreholes and improve the effectiveness of borehole drainage, this paper studies the regularity of the drainage water of the roof aquifer of No. 8 coal seam in Bei No.2 mining area of Donghuantuo Coal Mine, Kailuan. In this paper, the occurrence and accumulation of water-filled aquifer section in roof of 8 coal seam under the control of syncline upside-end structure are analyzed theoretically, 32 hydrophobic boreholes and its six influencing indexes are counted, and the dynamic characteristics of hydrophobic capacity and time are studied. Correlation between hydrophobic capacity and influencing factors. The results show that for the direct water-filled aquifer where the roof coal of 8 coal seam is more than 0 ~ 30 m along the inclined bedding and the direct water-filling aquifer with poor hydraulic connection along the direction, it is appropriate to distribute the drilling nest along the roadway. The location of the borehole and the time of initial water release have the most significant influence on the water output of the borehole, and the relationship between the borehole and the developing direction of the fissure also has an obvious effect on the water output. The hydrophobic advance time in this area should be 810 months.
【作者單位】： 華北理工大學(xué)礦業(yè)工程學(xué)院;河北省礦業(yè)開(kāi)發(fā)與安全技術(shù)重點(diǎn)實(shí)驗(yàn)室;
【基金】：河北省自然基金“司家營(yíng)礦區(qū)基巖風(fēng)化帶滲透性動(dòng)態(tài)研究”(D2015209327)
【分類(lèi)號(hào)】：TD745.2
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本文編號(hào)：2032416