煤矿邻近工作面地表移动观测站的设计与测量方法

Design and Measuring of Surface Movement Observation Station Neighboring Coalmine Working Face

以彬长矿区某矿山504工作面及相邻503、505工作面地表移动测量为例,探讨在邻近工作面重复采动条件下地表移动观测站的设计与测量方法。根据各工作面的地质情况及位置关系,确定走向观测线平面位置由504工作面中心正上方向下山方向偏移12.2 m,平行于工作面走向且通过O点。依据给定的开采沉陷角量参数和采矿参数,确定504工作面观测站沿走向布设的半长观测线长度为1 120 m,点距为20 m,设计测点57个;倾向观测线布设两条,长度分别为680 m、580 m,设计测点分别为35个、30个。测量应在标石沉降稳定后进行,在地表移动观测的各个阶段可采用不同的测量方法,并对其不同阶段的精度提出了相应的要求。

Taking the surface movement measuring near working faces Nos.504, 503 and 506 of a coalmine in the Binchang mining area as example, discussed surface movement observation station design and measuring methods under neighboring working faces repeated mining condition. Based on geological condition and situational relationship between working faces have determined the strike observation line planimetric position migrated 12.2m from No.504 working face center directly above toward dip heading, parallel to working face strike and through the O point. According to given mining subsidence angular parameters and mining parameters, have determined working face No.504 observation station along the strike layout half-length observation line 1120 m long, point interval 20 m, designed points 57; two dip observation lines with length 680 m, 580 m and designed points 35, 30 respectively. Measuring should be carried out until the markstone settlement stable, during different stages of surface movement observation can use different measuring methods,and different staged accuracy corresponding requirements put forward.