CAJ | 학술논문

为客观预测山区采动地表裂缝的位置和宽度，在分析地表裂缝产生机理的基础上，以主断面上等坡度的坡段为研究对象，并以山区地表下沉、水平移动预计值为主要参数，按照矢量分解与合成法则求取坡段变形预计值，将岩土力学中的临界变形值作为地表起裂判据，进而确定采动裂缝出现的坡段及单位长度内地表裂缝宽度，最后分析了所提方法的适用性。选择山西古交嘉乐泉煤矿1208~1210对拉工作面为例进行实例分析，结果表明：坡段变形预测值和变形分布规律与实际符合较好，出现裂缝的坡段与现场勘查结果基本一致，从而验证了该方法的可行性与有效性。
위객관예측산구채동지표렬봉적위치화관도，재분석지표렬봉산생궤리적기출상，이주단면상등파도적파단위연구대상，병이산구지표하침、수평이동예계치위주요삼수，안조시량분해여합성법칙구취파단변형예계치，장암토역학중적림계변형치작위지표기렬판거，진이학정채동렬봉출현적파단급단위장도내지표렬봉관도，최후분석료소제방법적괄용성。선택산서고교가악천매광1208~1210대랍공작면위례진행실례분석，결과표명：파단변형예측치화변형분포규률여실제부합교호，출현렬봉적파단여현장감사결과기본일치，종이험증료해방법적가행성여유효성。
To objectively predict the location and width of surface fissures in high relief coal mining subsidence areas, according to the generation mechanism of surface fissures, a slope segment deforma-tion has been predicted based on the vectors’ decomposition and synthesis principles using the equal gradient slope segment in the main section as research object and the subsidence and horizontal move-ment prediction values as main parameters. Taking the critical deformation value in rock and soil me-chanics as the criterion of the beginning of surface fissures, this model is used to determine the location of the slope segment of the surface fissures and the width of surface fissures per unit length induced by mining. The feasibility and effectiveness of the method are tested by a case study of the 1208~1210 double face subsidence area of Jialequan Coal Mine in Shanxi Province, which shows a good fitness between the observed results and the predicted values and distribution pattern of slope segment defor-mation and location of surface fissures.