辽宁工程技术大学学报（自然科学版）2011，Vol.30Issue(5)：689-692,4.DOI:CNKI:21-1379/N.20111026.1859.004
坚硬顶板预裂对底板突水的影响
Relationship between pre-cracking hard main roof and underground water ingress from floor at longwall face
摘要
Abstract
There are many underground water ingress accidents in Jiaozuo Mining Group during past 30 years. Some of them occur at first cracking of main roof. Based on strata movement and ground pressure analysis, this study presents a relationship between hard main roof movement and floor cracking. The study results show that pre-cracking hard main roof before its first cracking, the depth of floor cracking will be greatly reduced. Subsequently, the possibility of underground water ingress will be greatly reduced. This conclusion is applied at many longwall faces in Jiaozuo Mining area. The field monitoring data show that the average ingress water volume is decreased from 100 to 30m3/h after pre-cracking hard main roof. The result in this study can be used in other mining areas with similar conditions.关键词
煤矿/底板突水/坚硬顶板/预裂顶板/垮落步距/演马庄矿/FLAC2D/综采Key words
coal mine/ underground floor water ingress/ hard roof/ pre-cracking roof/ trans-falling step/ Yanma village mine/ FLAC2D/ fully mechanized mining分类
矿业与冶金引用本文复制引用
贾明魁..坚硬顶板预裂对底板突水的影响 [J].辽宁工程技术大学学报（自然科学版）,2011,30(5):689-692,4.基金项目
国家重大基础研究项目"973"(2010CB226803) （2010CB226803）
国家自然科学基金资助项目(40674017,50774012) （40674017,50774012）
国家十一五科技支撑计划资助项目(2007BAK24B04) （2007BAK24B04）
