缓倾斜中厚煤层混凝土沿空留巷工业试验  

Industrial Test of Concrete Packing for Gob-Side Entry Retained in Gently-Inclined Medium-Thickness Coal Seam

作　　者：邓月华[1,2] 唐建新[1,2] 朱祥可 付勇[1,2] 胡海[1,2] 

机构地区：[1]重庆大学资源及环境科学学院,重庆400030 [2]西南资源开发及环境灾害控制工程教育部重点实验室,重庆400030 [3]达竹煤电集团金刚煤矿,四川达州635000

出　　处：《西南交通大学学报》2011年第3期523-528,共6页Journal of Southwest Jiaotong University

基　　金：国家自然科学基金资助项目(50874124)

摘　　要：为在缓倾斜中厚煤层综采工作面沿空留巷,提高资源回收率,提出用泵送混凝土作为巷旁充填材料、充填体两侧用单体液压支柱临时支护、采空区侧用锚索加强支护的联合支护方案.对混凝土充填材料进行了配比试验,根据岩层控制理论确定支护参数,在金刚煤矿3117综采工作面进行了工业试验.试验结果表明:普通混凝土巷旁充填,辅以单体液压支柱作为临时支护,可以弥补混凝土初期强度低的缺点,能有效控制顶板岩层.In order to carry out gob-side entry retaining for a fully-mechanized coal faces in a gently-inclined medium-thickness coal seam to improve coal recovery,an integrated supporting scheme was proposed.In this scheme pumping concrete is used as filling material,single hydraulic props as temporary supporting on the both sides of concrete backfill and anchor cables as reinforce supporting along goaf.Proportioning tests on filling concrete were conducted in the lab,supporting parameters were determined based on the strata control theory,and an industrial test was carried through successfully in No.3117 fully-mechanized coal face in Jingang Coal Mine.The test result shows that roadside packing with ordinary concrete combining with single hydraulic props as temporary supporting can overcome the disadvantage of ordinary concrete in initial strength to effectively control roof strata.

关 键 词：沿空留巷 缓倾斜中厚煤层 泵送混凝土 巷旁充填 巷旁支护 

分 类 号：TD322.3[矿业工程—矿井建设]