本文選題：煤礦水害　切入點(diǎn)：水文監(jiān)測　出處：《礦業(yè)安全與環(huán)保》2017年04期 　論文類型：期刊論文

【摘要】：為掌握補(bǔ)連塔煤礦31401工作面頂板突水致災(zāi)機(jī)理,通過施工井下放水孔、水文觀測孔及地面鉆孔,分別監(jiān)測各鉆孔的水流量、水位、水位—流量耦合信息,并對上述信息進(jìn)行挖掘,用于分析頂板滲透性、覆巖變形規(guī)律及其與含水層水位變化關(guān)系、裂采比與垮采比。分析結(jié)果表明:頂板含水層原生裂隙不發(fā)育,采前滲透性弱;覆巖破斷變形過程經(jīng)歷了張開、閉合過程,并且砂質(zhì)泥巖遇水泥化、膨脹,填堵導(dǎo)水通道,同時(shí),覆巖變形與含水層水位下降存在必然聯(lián)系,水位下降滯后周期來壓初始時(shí)間;采前原生裂隙不發(fā)育,采后裂采比為31.93~34.98,垮采比為3.88~4.48。確定該工作面多次出現(xiàn)的周期性頂板突水通道為回采后的導(dǎo)裂帶。
[Abstract]:In order to understand the mechanism of water inrush from roof in 31401 working face of Bulianta Coal Mine, the coupling information of water flow, water level, water level and discharge of each borehole are monitored through underground drainage hole, hydrological observation hole and surface borehole. The above information is excavated to analyze roof permeability, overburden deformation law and its relation with aquifer water level change, crack to mining ratio and collapse ratio. The results show that the primary fissure of roof aquifer is not developed, and the permeability before mining is weak; The process of overburden fracture and deformation has gone through the process of opening and closing, and the sand mudstone has encountered cement, expansion and plugging of water diversion channel. At the same time, the overburden deformation is inevitably related to the water level decline of the aquifer, and the initial time of water level falling lag period comes under initial pressure. The primary fissure is not developed before mining, the ratio of post-mining crack to mining is 31.93 ~ 34.98, and the ratio of collapse to mining is 3.88 ~ 4.48. It is determined that the periodic roof water inrush passage appearing in this working face many times is the leading crack zone after mining.
【作者單位】： 中煤科工集團(tuán)重慶研究院有限公司;
【基金】：中煤科工集團(tuán)重慶研究院有限公司自立基金項(xiàng)目(2013ZDXM14) 重慶市交通科學(xué)技術(shù)項(xiàng)目(2014-01)
【分類號】：TD745.2

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