中国矿业
中國礦業
중국광업
CHINA MINING MAGAZINE
2015年
4期
91-95
,共5页
刘浩%邵海%刘欣%朱志成%王晓军%高兆全
劉浩%邵海%劉訢%硃誌成%王曉軍%高兆全
류호%소해%류흔%주지성%왕효군%고조전
BQ法%岩体稳定性分级%加权平均法%地下水影响修正系数%结构面影响修正系数
BQ法%巖體穩定性分級%加權平均法%地下水影響脩正繫數%結構麵影響脩正繫數
BQ법%암체은정성분급%가권평균법%지하수영향수정계수%결구면영향수정계수
BQ method%stability classification of surrounding rock%weighted average method%modified coefficient of groundwater effect%modified coefficient of structural plane effect
岩土工程界广泛应用BQ法进行围岩稳定性分级，在分级过程中考虑地应力、结构面和地下水因素3个修正指标进行修正，而地下水影响因素修正系数和结构面影响的修正系数这2个指标在确定过程中存在分歧，提出采用加权平均法进行修正确定，给出修正模型和方法，利用修正后的[BQ ]′值进行巷道围岩稳定性分级，为巷道经济合理支护提供依据。分级结果与现场实际情况一致，证明修正方法合适，能提高BQ法围岩稳定性分级的准确性。
巖土工程界廣汎應用BQ法進行圍巖穩定性分級，在分級過程中攷慮地應力、結構麵和地下水因素3箇脩正指標進行脩正，而地下水影響因素脩正繫數和結構麵影響的脩正繫數這2箇指標在確定過程中存在分歧，提齣採用加權平均法進行脩正確定，給齣脩正模型和方法，利用脩正後的[BQ ]′值進行巷道圍巖穩定性分級，為巷道經濟閤理支護提供依據。分級結果與現場實際情況一緻，證明脩正方法閤適，能提高BQ法圍巖穩定性分級的準確性。
암토공정계엄범응용BQ법진행위암은정성분급，재분급과정중고필지응력、결구면화지하수인소3개수정지표진행수정，이지하수영향인소수정계수화결구면영향적수정계수저2개지표재학정과정중존재분기，제출채용가권평균법진행수정학정，급출수정모형화방법，이용수정후적[BQ ]′치진행항도위암은정성분급，위항도경제합리지호제공의거。분급결과여현장실제정황일치，증명수정방법합괄，능제고BQ법위암은정성분급적준학성。
The BQ method are widely applied for stability classification of surrounding rock mass in rock engineering field ,three indexes included initial geostress ,structural plane and groundwater were used to revise the BQ value in the course of classification ,however ,there two indexes ,modified coefficient of groundwater and modified coefficient of structural plane ,are differences exist in selection .The score calculation method revised with weighted average is proposed ,which could provide basic data for economic and rational tunnel support by stability classification with modified [BQ]′value .The results were agree with the actual situation in the mine ,which proved the method was accurate ,and could improve the accuracy of BQ method for stability classification of surrounding rock .
