地面与井下综合方法探测煤层顶底板富水区

Coal Roof and Floor Water-rich Zone Detection through Integrated Surface and Underground Prospecting

为查明银星二号煤矿首采区主要含水层富水区分布、构造含导水性等情况,采用了地面瞬变电磁法和井下高分辨电测深法与音频电透视法等地、井结合的方法进行勘探。通过对1131001工作面地上、地下探测成果的分析,认为在工作面范围内,10煤层上覆和下伏各含水层相对富水区的位置具有较好的对应关系,其中在地面瞬变电磁法10煤向上30 m的层位上,存在9、10号视电阻率异常,其平面位置与井下二种方法解释的顶底板富水区基本一致,但三种探测方法的成果图中均无特征显示该工作面范围内存在断层,因此推断10煤上、下层位内的电性异常均为裂隙带富水所致。

To identify main aquifer water-rich zone distribution, structural water-bearing and water transmitting properties in the first mining area, Yinxing No.2 coalmine, the integrated surface and underground prospecting including surface TEM, underground high resolution electric sounding and audio electrical penetration detection have been used for working face No. 1131001. The results have better correspondence with coal No. 10 overlying and underlying aquifer relative water-rich zones within the extent of working face. Among them, on surface TEM data 30m above coal No. 10 have Nos.9 and 10 apparent resistivity anomalies; their planimetric positions are basically coincide with coal roof and floor water-rich zones interpreted by 2 underground methods. But on result charts of 3 prospecting methods all have no characteristic display of faults existed within working face extent; thus inferred the electric anomalies above and under coal No.10 are all from fissure zone water enrichment.