中国煤炭
中國煤炭
중국매탄
CHINA COAL
2014年
5期
48-51
,共4页
厚坚硬顶板%巷道支护%巷道顶板%爆破弱化%中空注浆锚索
厚堅硬頂闆%巷道支護%巷道頂闆%爆破弱化%中空註漿錨索
후견경정판%항도지호%항도정판%폭파약화%중공주장묘색
thick and hard roof%roadway support%roadway roof%blasting weakening%holG low grouting anchor cable
晋煤集团古书院矿15＃煤层工作面直接顶坚硬、底板松软，预留巷道受动压影响变形十分严重。针对这一问题，采用在采掘工作面前方预裂爆破方法将坚硬的直接顶板切断，防止煤柱侧顶板悬顶，改善预留巷道应力状态，同时采用中空注浆锚索对预留巷道围岩进行加固。试验结果表明，预留巷道维护状况得到了根本改善。
晉煤集糰古書院礦15＃煤層工作麵直接頂堅硬、底闆鬆軟，預留巷道受動壓影響變形十分嚴重。針對這一問題，採用在採掘工作麵前方預裂爆破方法將堅硬的直接頂闆切斷，防止煤柱側頂闆懸頂，改善預留巷道應力狀態，同時採用中空註漿錨索對預留巷道圍巖進行加固。試驗結果錶明，預留巷道維護狀況得到瞭根本改善。
진매집단고서원광15＃매층공작면직접정견경、저판송연，예류항도수동압영향변형십분엄중。침대저일문제，채용재채굴공작면전방예렬폭파방법장견경적직접정판절단，방지매주측정판현정，개선예류항도응력상태，동시채용중공주장묘색대예류항도위암진행가고。시험결과표명，예류항도유호상황득도료근본개선。
In the 1 5#coal seam working face in Gushuyuan Mine of Jincheng Anthracite MinG ing Group,there are some problems:the direct roof is thick and hard;the floor is soft;the reG served roadway is severely deformed because of the dynamic pressure of mining?Therefore,the presplitting blasting method is applied at the head of 1 5# coal seam working face to cut off the diG rect roof,so as to prevent the roof beside coal pillar overhang and improve the stress state of the reserved roadway;and in the meantime,the hollow grouting anchor cable is used to reinforce the surrounding rock of the roadway?The test results show that the reserved roadway is radically imG proved.
