深井沿空掘巷煤柱合理宽度确定及支护参数优化  

Rational Coal Pillar Width Determined and Support Parameter Optimized for Gateway Driving Along Goaf in Deep Mine

作　　者：秦永洋[1] 许少东[1] 杨张杰[2] 

机构地区：[1]淮南矿业(集团)有限责任公司顾桥煤矿,安徽淮南232001 [2]安徽省煤炭科学研究院,安徽合肥230001

出　　处：《煤炭科学技术》2010年第2期15-18,共4页Coal Science and Technology

摘　　要：为了解决顾桥煤矿深部巷道小煤柱沿空掘巷的支护难题,根据顾桥煤矿1121(1)综采面回风巷的工程地质条件,采用数值模拟方法对5,8及10m三种不同宽度煤柱条件下的围岩应力分布规律进行了模拟研究。结果表明:在相同的地质及采矿条件下,8m煤柱的应力峰值最小、5m煤柱的应力峰值最大,说明该巷道合理的煤柱宽度应为8m。同时对该巷道锚索网支护进行了设计,巷道支护实践及矿压观测结果表明,1121(1)综采面回风巷采用所确定的合理煤柱宽度及锚索网支护参数,有利于保持煤柱及巷道围岩的稳定。In order to solve the support difficulties of the gateway driving along the goal with small coal pillars in the deep section of Gu- qiao Mine, according to the engineering geological conditions of the air return gateway in the 1121 （ 1 ） fully mechanized coal mining face of Guqiao Mine, the numerical simulation method was applied to the simulation study on the stress distribution law of the surrounding rocks under three different width coal pillar conditions, with a width of 5, 8 and 10 m. The results showed that under the same geological and mining conditions, the stress peak value of the 8 m width coal pillar would be minimum and the stress peak value of the 5 m width coal pillar would be maximum. Thus the rational width of the coal pillar for the gateway shall be 8 m. Meanwhile, the bole-anchor-steel mesh support of the gateway was designed. The gateway support practices and the strata pressure measured results showed that the rational coal pillar width and the bolt-anchor-steel mesh support parameters set for the air return gateway of the 1121 （ 1 ） fully mechanized coal mining face could be favorable to keep the stability of the coal pillars and the gateway surrounding rocks.

关 键 词：深井 煤柱宽度 锚索网 沿空掘巷 数值模拟 

分 类 号：TD322.3[矿业工程—矿井建设]