杭来湾煤矿进回风立井疏降水方案研究

Research on drainage scheme of inlet and return air shaft in Hanglaiwan Coal Mine

杭来湾煤矿进回风立井的建设直接关系到302盘区的整体开拓和矿井的采掘接续计划,对矿井的后期发展至关重要。通过分析矿井以往勘探技术资料,结合井筒检查孔抽水试验和钻孔取芯成果,基本查明立井掘进范围内主要含水层的富水性、单位涌水量、厚度和埋藏条件及各含水层之间的水力联系,确定第四系萨拉乌苏组潜水和基岩风化裂隙承压水是井筒的主要充水水源,根据井筒涌水量大小对立井的正常施工影响程度和井下巷道掘进实际状况,分别制定了井上井下相结合的疏降水方案,在安全、科学、合理的前提下,顺利完成了杭来湾煤矿进回风立井的施工任务,为矿井的持续发展奠定了基础。

The construction of inlet and return air shaft of Hanglaiwan Coal Mine is directly related to the overall development of panel 302 and the mining continuation plan of the mine, which is very importance to the later development of the mine.By analyzing the previous exploration technical data of the mine, combined with the pumping test of the shaft inspection hole and the results of coring, the water abundance, unit water inflow, thickness and burial conditions of the main aquifers within the vertical shaft and the hydraulic connection between the aquifers are basically found out, and it is determined that the Quaternary Salawusu Formation diving and bedrock weathered fissure confined water is the main water filling source of the shaft.According to the influence of shaft water inflow on shaft construction and the actual situation of underground roadway excavation, the drainage and dewatering scheme combined surface and underground is formulated respectively.On the premise of safety, science and rationality, the construction task of inlet and return air shaft of Hanglaiwan Coal Mine is successfully completed, which lays a foundation for the sustainable development of the mine.