Ӧ��UNWEDGE �������ൺijLPG ���´���ˮĻ�ȵ�1K0 + 125 �� 145 �ν��йؼ�������������㣬�õ�4 �����ƶ����塣���У�����1 λ���ȵ��ײ���Ϊ���ȿ���; ����4��5 �ֱ�λ���ȵ����ұ�ǽ����ȫϵ��Ϊ1. 945 ��3. 385��������������Ҫ��; ����8 λ���ȵ�������������������ϴ󣬰�ȫϵ��ȡΪ0��������ر�֧���ͷ���������֧����������֧��ǰ�����Աȿ��Կ��������尲ȫϵ����߷��Ƚϴ󣬿���8 ��ê��֧����ê��֧������°�ȫϵ���ֱ�Ϊ1. 278 ��6. 406�����������������߿��尲ȫϵ���������ԣ�֧���������㹤�̰�ȫ��Ҫ��

The research and calculation of the key block of 1K0 + 125 �� 145 section in water curtain gallery at Qingdao LPG underground storage have been done using UNWEDGE software��and obtained four removable blocks�� Block 1 was a self-stable block and located at the bottom of the gallery�� Block 4 and block 5 located at the left and right walls separately��with the security factors of 1. 945 and 3. 385��can meet the basic requirements of self-stable�� Block 8 located on the top of the gallery with large size��heavy weight and a safety factor of 0��required special supporting�� Supporting program was put forward on the analysis of the results�� By comparison of the results before and after supporting��it can be seen that the security factor increased significantly�� The security factors of block 8 under bolting support and anchor support were 1. 278 and 6. 406��respectively�� It is clear that the shotcrete was more effective in improving the security factor of blocks��and the supporting program can meet the safety requirements of the project��