Z型工作面切顶留巷支护技术研究

Research of gob-side entry retaining technology by roof cutting in Z-type mining face

以董东煤矿50107工作面作为Z型工作面开采切顶留巷实验对象,分析了巷内锚网支护、煤机截割成巷、巷外预裂爆破以及巷旁挡矸支护等关键因素对留巷稳定性的影响,提出了巷内支护,巷外支护和巷外切顶的技术参数,通过现场实测,达到了预期目的。

Taking the gob-side entry- retaining by roof cutting in No. 50107 Z-type mining face of Dongdong coal mine as test object, the influenee of key factors on the stability of gob-side entry retaining, such as roof support, roadway excavation and pre-splitting blasting outside roadway, was analyzed, and the technical parameters of roadway support and roof cutting were put forward. Through field measurement, the expected goal was achieved.