摘要
路基下方采空区的存在，严重地影响了高速公路的安全和运营。为解决此问题，根据不同采空区的工程地质条件，彩不同的压力注浆方法进行采空区治理。注浆浆液为水泥粘土浆液或水泥粉煤灰浆，水固比在１∶１～１∶２之间，水泥占固相总重量的１０％～５４％之间。灌注的浆液充填了采空区，团结了松散的岩体或堆积物，阻止了采空区上覆岩层进一步冒落塌陷和地表进一步变形。
The safety and transportion of freeway are deeply affected by the mined-out areas under the foundation of freeway.According to the different engineering geological conditions of mined-out areas,the different grouting methoda are used in the treatment of mined-out areas. The grouting liquid is cement-clay liquid or ccement-qulverized coal ash liquid.The water solid ratio is from 1∶1.0 to 1∶2.0, the cement weight is 10%～54% of the total solid weight. The grouting liguids not only fill the mined-out area,but also consolid the loose rocks or loose deposits,As a result of the consolidation,the rock beds and the ground over the mined-out areas are prevented to further collapse and subside,the foundation bearing pressure over the mined-out areas satiafies the demends of freeway.
出处
《中国煤田地质》
1997年第4期45-48,81,共5页
Coal Geology of China
关键词
高速公路
采空区
塌陷
治理法
压力注浆
The treatment of mined-out areas,grouting liguid,freeway,underground mined-out areas
