非主断面地表移动观测站布置及求参方法研究

Study on observation station layout of non-principal cross section surface movement and parameter calculation method

为克服在采动区主断面位置设置地表移动观测站的环境制约性,使观测站的设置既少占农田又能较好的获取地表移动参数,采用在非主断面位置设置观测站的方式,从理论可行性、选址方法和概率积分法求取预计参数3个方面,研究了利用非主断面观测站的观测结果,求取矿区开采影响地表移动预计参数的方法。通过在实际工程中的检验与应用,证明在地表任意一点受开采影响所发生的位移,都能反映本矿区因开采引起的地表移动与变形的规律,对观测站合理的选址,利用逐步趋近的方式求取概率积分法的移动变形预计参数,可以有效地解决观测数据受地形条件、多工作面重复采动影响的问题,达到与主断面观测站相同的效果,较好地获得矿区开采引起的地表移动规律。

In order to overcome the environment restriction of the surface ground mobile observation station set up at the location above the principal cross section of the mining block and to let the observation station set occupy less farmland and well pick up the surface ground moving parameters, a method to set up the observation station at the location of the non-principal cross section was applied.From the theoretical feasibility, location selection method and probability integral method to estimate the parameters picked up, the observation results from the observation station at the location above the non-principal cross section were applied to study the method of the mining in the mining area affected to the predicted parameters of the surface ground movement.The inspection and application in the actual engineering showed that a displacement at any point of the surface ground occurred by the mining could reflect the surface ground displacement and deformation law occurred by the mining in the mining area. As for the rational selected location of the observation station, the steady close method was applied to get the displacement deformation predicted parameters of the probability integral method and could effectively solve the observation data influenced by the topographic condition and repeated mining of the multi coal mining faces in order to reach a same effect with the principal cross section observation station and to well have the surface ground movement law occurred by the mining in the mining area.