CAJ | 학술논문

为了研究受小倾角断层影响条件下铁路保护煤柱的留设方案,利用 UDEC 软件模拟了采煤工作面处于出露地表的小倾角断层下方不同位置时对地表移动特征的影响.结果表明：断层露头处地表会发生不连续变形,且当断层露头处于按正常地质条件下移动角划定的开采范围外时,工作面与断层露头的水平距离越近,该变形越明显,断层越易活化；工作面与断层露头的水平距离大于某一临界值时,断层露头处的移动变形小于建筑物Ⅰ级破坏的临界变形值.在榆树坡煤矿1504工作面,该临界值可取446.6 m,据此提出了铁路保护煤柱的留设方案.
위료연구수소경각단층영향조건하철로보호매주적류설방안,이용 UDEC 연건모의료채매공작면처우출로지표적소경각단층하방불동위치시대지표이동특정적영향.결과표명：단층로두처지표회발생불련속변형,차당단층로두처우안정상지질조건하이동각화정적개채범위외시,공작면여단층로두적수평거리월근,해변형월명현,단층월역활화；공작면여단층로두적수평거리대우모일림계치시,단층로두처적이동변형소우건축물Ⅰ급파배적림계변형치.재유수파매광1504공작면,해림계치가취446.6 m,거차제출료철로보호매주적류설방안.
In order to determine the design scheme of railway protection coal pillar influenced by a low-angle fault,the UDEC was applied to simulate the ground movement when the working face was in different positions under a low-angle fault which cropped out the earth surface. The results showed that,the ground discontinuous deformation would appear in the position of fault outcrop;furthermore,when the fault outcrop was outside the mining range defined by the dis-placement angle in normal geological conditions,the shorter the distance between the working face and fault outcrop was,the more distinct the deformation was and the easier to activate the fault would be. When the distance between working face and fault outcrop was longer than a cer-tain critical value,the movement deformation in the position of fault outcrop was smaller than the critical deformation value of building damage of classⅠ. In No.1504 working face of Yushupo Coal Mine,the critical value was 446.6 m. The design scheme of the railway protection coal pil-lar was proposed based on the analysis above.