CAJ | 학술논문

凤凰山铁矿东风井，成井至井深696 m时，工作面出现涌水，涌水量达到23.55 m3／h。根据现场围岩揭露情况，提出“先支护，后注浆堵水”的施工方案。采用“短段掘支，增加壁厚，提高强度”的施工技术及防范措施，形成注浆耐压层，使得浆液充填体和围岩胶结，形成统一承载体、隔水墙，提高了围岩稳定性、完整性和隔水性。注浆加固结束后，涌水量降到了0.5 m3／h以下，堵水效果明显。
봉황산철광동풍정，성정지정심696 m시，공작면출현용수，용수량체도23.55 m3／h。근거현장위암게로정황，제출“선지호，후주장도수”적시공방안。채용“단단굴지，증가벽후，제고강도”적시공기술급방범조시，형성주장내압층，사득장액충전체화위암효결，형성통일승재체、격수장，제고료위암은정성、완정성화격수성。주장가고결속후，용수량강도료0.5 m3／h이하，도수효과명현。
Water gushing took place in working face ,while the East Ventilating Shaft had been dug 696 m in Fenghuangshan Iron Mine ,the outflow of water reached 23.55 m3/h. According to the cir‐cumstances of surrounding rock outcrop at the field ,construction scheme of “former supporting ,later grouting for water blocking”was put forward. The construction technology and preventive counter‐measure of “driving and supporting for a short section ,increasing the thickness and the strength of shaft wall” was applied ,the grouting pressure-sustaining layer formed ,grout filling body and sur‐rounding rock bonded together ,and form the unified carrying body and impermeable w all. T he stabili‐ty ,completeness and impermeability of surrounding rock could be increased. After grouting reinforce‐ment ,the outflow of water reduced below 0.5 m3/h ,the water blocking effect was very obvious.