Development and Application of Complementary Support Technology under the Condition of Weak and Broken Surrounding Rocks
The support of surrounding rock under the condition of deep mining has significant challenges due to high stress and low rock strength environment. Using the method of strengthening broken rock, reinforcing support force and releasing the mine-induced stress, this study has pointed out the complementary support technology which is based on the support using bolt-wire-shotcrete and is combined with steel arched yielding support. For the purpose of permanent support, the complementary support technology could combine the each support element and adequately take advantage of load-caring capacity of surrounding rock. The monitoring data of Xiaokang coal mine, Muchengjian coal mine and Yangquhe coal mine indicate that, for the various geological conditions, complementary support system has provided powerful support force to resist large deformation of weak and broken surrounding rock. It is proved that this type of support technology could reduce the mine-induced stress as well and has economical significance.
Chaohe Chen, Yong Huang and Guangfan Li
H. W. Wang et al., "Development and Application of Complementary Support Technology under the Condition of Weak and Broken Surrounding Rocks", Advanced Materials Research, Vols. 243-249, pp. 3389-3398, 2011