丰阳煤矿底板比压测试方法研究

Research on the pressure plate test method of the Fengyang Colliery

为研究和评价工作面底板岩性抗压特征,结合丰阳煤矿32020工作面情况,在32020工作面推进过程中的不同地点、不同时段进行了底板比压测试,并对32020工作面实测数据进行分析,结果表明,底板比压为3.64～33.36MPa,4个测区的平均值为15.38MPa.从其在工作面分布的情况看,该工作面上部底板强度较低,具有覆煤;工作面中下部,底板强度较大.但从总体上看,工作面底板强度分布不均匀,且强度差异较大,开采过程中应密切关注.通过测定获得了丰阳煤矿主采煤层底板比压分布值,明确了煤层底板类型,为液压支架参数确定提供了依据.

In order to further study and evaluation the characteristics of the face floor compressive , combined with the situation of Fengyang coal mine 32020 face, the bottom pressure is tested in different locations and different periods, and the collation and analysis of the measured data in the 32020 face shows that the range of bottom pressure is at 3.64 - 33.36 MPa, the average bottom pressure of the four surveyed area is 15.38 MPa. From the distribution of the face, the bottom intensity of the working surface is lower with a follow - up of coal; In the lower part of the face, the bottom intensity is bigger. However, generally the distribution of the bottom intensity is non- uniform, and the intensity difference is quite bigger. The close attention should be paid during the mining process. By the measurement and analysis, we obtained the distribution of the Fengyang colliery main coal seam bottom pressure, identified the type of coal seam floor and provided a reference for the hydraulic support parameter determination.