【摘要】：隨著煤炭價格的變動，使國內外的部分礦山實施了井工轉露天開采。而原有井工礦所遺留的大量形態(tài)各異、成因復雜的采空區(qū)困擾著諸多礦山，如何圈定出其影響區(qū)域及采空區(qū)深度已成為重要課題。 本文針對采空區(qū)范圍、深度探測問題以鄂爾多斯市烏蘭煤炭集團公司特拉布拉煤礦為研究對象運用瞬變電磁探測技術，通過對范圍明確的采空區(qū)的上賦巖層施加不同重量礦用卡車等大型礦用機械設備，，確定研究區(qū)域內上賦巖層所能承受的重量極限值。研究內容具體分為以下方面： （1）通過對礦區(qū)的現(xiàn)場調研，確定實驗區(qū)域范圍，運用GPS-RTK放樣拐點坐標。 （2）在確定的實驗區(qū)域運用ATEM-10KW瞬變電磁發(fā)射機和ATEM-IV型瞬變電磁接收機，使用重疊回線法進行采空區(qū)探測工作。 （3）分別運用Grapher4.0、ATEM-2pro、Voxler3、Surfer8等軟件針對探測結果進行分析，最得出視電阻率等值線圖以及地下采空區(qū)三維位置示意圖。 （4）針對三維位置示意圖，運用FLAC-3D軟件建立采空區(qū)模型，并選定6個巖土介質破壞嚴重且地下應力環(huán)境復雜的地表薄弱位置施加相當于不同噸位的礦用開車重量的面向載荷，計算出各位置的極限承重，最終得出地表最薄弱位置所能承受的最大礦用機械設備的重量為248t。 本文針對運用瞬變電磁法圈定出的空間位置、形態(tài)、厚度已明確的采空區(qū)，對其上賦巖層施加不同重量礦用卡車等大型礦用機械設備，分析其極限承重能力，對特拉布拉煤礦甚至其他地質條件相似的擁有采空區(qū)安全隱患的礦山具有重要的現(xiàn)實和長遠意義。
[Abstract]:With the change of coal price, some mines at home and abroad have been converted to open-pit mining. However, a large number of different shapes have been left over from the original wells and mines, and many mines have been troubled by the complex goaf of origin. How to delineate the affected area and the depth of the goaf has become an important subject. Aiming at the scope of goaf and depth detection problem, this paper applies transient electromagnetic detection technology to the Trabra Coal Mine of Wu Lan Coal Group Company of Ordos City. By applying large mining machinery and equipment such as truck with different weights to the upper strata of the goaf, the limit value of the weight of the upper strata in the study area can be determined. The research contents are divided into the following aspects: (1) through the field investigation of the mining area, determine the scope of the experimental area, GPS-RTK inflection point coordinates are used. (2) ATEM-10KW transient electromagnetic transmitter and ATEM-IV transient electromagnetic receiver are used in the determined experimental area. The overlapped loop method is used to detect the goaf. (3) the detection results are analyzed by using the software of Grapher 4.0 / ATEM-2proVoxler3 / Surfer8 respectively. The contour map of apparent resistivity and 3D position map of underground goaf are obtained. (4) the model of goaf is established by using FLAC-3D software. At the same time, six weak positions of ground surface with serious damage of rock and soil medium and complicated underground stress environment are selected to apply the face load equivalent to mine starting weight of different tonnage, and the ultimate bearing capacity of each position is calculated. Finally, it is concluded that the maximum weight of mining machinery and equipment can be supported by the weakest position of the earth's surface is 248 t. In this paper, aiming at the goaf defined by transient electromagnetic method in which the space position, shape and thickness have been determined, large mining machinery equipment such as mine truck with different weights is applied to its upper strata, and its ultimate load-bearing capacity is analyzed. It has important practical and long-term significance for Trabra coal mine and other mines with similar geological conditions.
【學位授予單位】：內蒙古科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TD325.4

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