煤矿安全2017，Vol.48Issue(9)：92-95,4.DOI:10.13347/j.cnki.mkaq.2017.09.025
深部煤层综采工作面切顶卸压沿空成巷技术
Roof Pre-splitting Blasting and Pressure-relief for Goaf-side Entry Retaining Technology in Deep Fully Mechanized Mining Face
摘要
Abstract
To solve the problems during the mining of deep coal seams in Chengjiao Mine,such as the increasing mine pressure,the difficult control of roadway surrounding rock and the unsmooth mining alternation,this paper studied roof pre-splitting blasting and pressure-relief for goaf-side entry retaining technology.Results show that:roof pre-splitting blasting and pressure-relief for god-side entry retaining technology works as follow:pre-split the advance section of roof in the goaf-side entry and cut off the stress transfer between roof of roadway and that of goaf;the goaf roof cutting and crushing along the pre-splitting surface become a rib;then the crushed rock will support the roof,which plays a positive role in improving the stress distribution in the surrounding rock of roadway.Site application shows that:the technology can decrease periodic roof pressure,avoid resource loss caused by coal pillar and support cost caused by frequent roadway repairing;besides,roof pre-splitting blasting and pressure-relief for goafside entry retaining technology was first successfully realized in deep fully mechanized mining face.关键词
深部开采/切顶卸压/沿空留巷/无煤柱开采/安全高效开采Key words
deep mining/roof cutting and pressure relief/goaf-side entry retaining/non-pillar mining/safe and efficient mining分类
矿业与冶金引用本文复制引用
张洋,梁宁宁,赵宾..深部煤层综采工作面切顶卸压沿空成巷技术[J].煤矿安全,2017,48(9):92-95,4.基金项目
国家自然科学基金资助项目(51304202) （51304202）
江苏省高校优势学科建设资助项目 （）
中央高校基本科研业务费专项资金资助项目(2015XKMS002) （2015XKMS002）
