基于水量水质的导水裂缝带发育高度计算方法研究

发布时间：2018-06-19 06:16

本文选题：水量水质 + 导水裂缝带高度　；参考：《中国矿业大学》2017年硕士论文

【摘要】：高家堡矿井面临严重的顶板水害威胁,在常规的导水裂缝带高度计算与实测上,均存在一定的难度。本文从水量—水质分析计算的角度,研究了不同采高下的导水裂缝带发育高度及裂采比,具有一定的指导意义。本文从101工作面的地质及水文地质入手,统计分析了工作面内及附近的钻孔资料,得到了工作面的地质及水文地质背景。分析了五个阶段的水量与长观孔的水位变化之间的关系、与突水过程中水质变化的关系、与推进采高的关系,结果表明:第一阶段为直接顶延安组含水层充水;第二阶段导水裂缝带已沟通至洛河组下段含水层;第三、第四、第五阶段导水裂缝带已进入洛河组上段含水层,得到了各个阶段采高、量、长观孔降深等基本参数。概化了101工作面的水文地质条件,使用非完整井理论计算了各个阶段的导水裂缝带发育高度,通过水质分析法修正了计算结果,第二、三、四、五阶段的导高分别为96.1m、209.3m、230.3m、247.6m;使用Modflow建立了101工作面水文地质模型,反演了相关参数,计算了第一、第二阶段导高,结果是99.9m、109.9m。分析了101工作面顶板岩性,分别使用中国矿业大学(北京)、唐山煤科院、彬长矿区矿井比拟法、UDEC数值模拟法计算了不同采高下的导水裂缝带高度。对比分析了多个计算结果的误差,确定了最终取值,结果是:采高3.5m时,导高为96.1m;采高为7.6m时,导高为200.1m;采高为8.75m时,导高为230.4m;采高为9.35m时,导高为247.6;裂采比在26.3~27.4。
[Abstract]:Gaojiapu mine is faced with a serious threat of roof water hazard, so it is difficult to calculate and measure the height of the conventional water-conducting fracture zone. In this paper, from the angle of analysis and calculation of water quantity and water quality, the development height and fracture-production ratio of the water-conducting fracture zone under different mining heights are studied, which is of certain guiding significance. This paper starts with the geology and hydrogeology of face 101, analyzes the borehole data in and around the face, and obtains the geological and hydrogeological background of the working face. The relationship between the water quantity in five stages and the water level change in the long observation hole, the water quality change in the process of water inrush, and the propulsive mining height are analyzed. The results show that the first stage is the water filling of the aquifer of the direct Ding Yan'an formation; In the second stage, the water diversion fracture zone has been communicated to the lower aquifer of Luohe formation, and the third, the fifth stage has entered the upper aquifer of the Luohe formation, and the basic parameters such as mining height, quantity and depth of long observation hole have been obtained. The hydrogeological conditions of face 101 are generalized, and the development height of the water-conducting fracture zone in each stage is calculated by using the theory of non-holonomic wells. The calculation results are revised by the water quality analysis method. The second, third, and fourth, The guiding heights of the five stages are respectively 96.1mU 209.3mg 230.3mb 247.6m.The hydrogeological model of 101 working face has been established by using Modflow, the relevant parameters have been inversed, and the first and second stage conductance heights have been calculated. The result is 99.9mng 109.9m. The roof lithology of 101 working face is analyzed, and the height of water-conducting fracture zone under different mining heights is calculated by using UDEC numerical simulation method of coal mine analogy method of China University of Mining and Mining (Beijing, Tangshan Coal Academy, Bingchang Mining area) respectively. By comparing and analyzing the errors of several calculation results, the final values are determined. The results are as follows: when the mining height is 3.5m, the guide height is 96.1m; when the mining height is 7.6m, the guide height is 200.1m; when the mining height is 8.75m, the guide height is 230.4m; when the mining height is 9.35m, the guiding height is 247.6; the split and mining ratio is 26.327.4.
【学位授予单位】：中国矿业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD745

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