{'fraction_non_alphanumeric': 0.010942760942760943, 'fraction_numerical': 0.0, 'mean_word_length': 5.225130890052356, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Numerical Simulation of Stress Relief Measures in Exploitation of Deep Deposit in Highly Stressed Zone

With the increasing demand of social and economic development of a nation, and the progress of mining engineering technology, the exploitation of mineral deposits is constantly developing to deep which is the inevitable trend of future development. The depth of mining and ground stress have positive relationship, with deep mining, the ground stress increases accordingly. Due to the high concentration of ground stress, rockburst accidents often occur in roadways. The prevention and control of rock burst is very important for the safe mining of deep deposit in high stress zone. According to the physical and mechanical properties of rock mass and characteristics of ground stress in deep deposit of Fankou LeadZinc Mine, different stress relief measures are designed for the prevention and control of rockburst. The three-dimensional elastoplastic finite element program is used to simulate and analyze the stress distribution in deep ore deposit of this mine for the purpose of providing basis for deciding to mine and control ground pressure of deep ore deposit in Fankou Lead-