caving zone meaning in Chinese

塌落带
坍塌区

Practice of using grouting technology to treat spontaneous combustion in caving zone
应用注浆工艺处理冒顶区煤层自然发火的实践
Examples of numerical simulation data and real seismic data show that by combining and correlating the seismic forward modeling section with seismic migration section it is possible to identify and predict the fracture - cave zone in carbonate rock layers
数值模拟和实际地震数据的例子说明，将地震正演剖面与地震偏移剖面相结合进行对比分析有可能识别和预测碳酸盐岩地层中的缝洞发育带。
The following new opinions : without caving zone coal layer extraction in efflorescent oxygenized belts ; two effects of blocking water and preventing water flowing fractured zone from going on developing after mining effect ; appropriately enlarging the extraction thickness were presented
提出了风氧化带煤层开采无垮落带；受采动影响后，具阻水和抑制导水裂隙带继续发展的双重作用以及适当加大开采厚度等新观点。