School of Surveying and Land Information Engineering, Henan Polytechnic University

为了研究厚松散层开采条件下地表移动变形规律,根据开滦矿区地表移动观测站实测资料,通过拟合分析方法,得到了厚松散层下概率积分法参数,给出了各参数与地质采矿条件之间的关系。并借助于UDEC数值模拟软件,探讨了厚松散层开采条件下地表移动变形规律。研究结果表明:松散层厚度是影响地表移动变形的主要因素。在厚松散层开采条件下,地表移动变形剧烈,大部分观测站的下沉系数大于0.90,拐点偏移距为7~55 m,地表极易出现剧烈的非连续变形,对矿山开采造成较大威胁。在厚松散层开采条件下,应采取加大留设安全煤岩柱尺寸等开采技术措施,保证"三下"采煤的安全进行。

In order to study law of the surface movement and deformation under thick unconsolidated strata, according to the observation data of surface movemen t observation station in Kailuan mine area, parameters of probability integral method were obtained by methods of ftting analysis, and the relations between each para meter and condition of geology and mining were obtained. Meanwhile, law of the surface movement and deformation were discussed with the help of the UDEC softwar e of numerical simulation. The study results showed that the thickness of alluvium was main influence factors about surface movement and deformation, in the condition of mining under thick unconsolidated strata, surface movement and deformation was serious. Most of the value of the surface subsidence coefficient was greater than 0.90, the variation range of deviation of inflection point was 7 ~ 55 m, discontinuous deformation would be appeared easily on the surface, then more danger would be given rise to mining under thick unconsolidated strata. So mining technology measures, such as increasing safety coal and rock pllar, and so on, should be adopted to i nsure safe-mining under railway, water body and building.

国家自然科学基金委员会与神华集团有限责任公司联合资助项目(U1261206)；河南省教育厅科学技术研究重点资助项目(13A440464)；