Abstract

The article describes the experimental studies into hydraulic fracturing of thick-walled cylinders with a circular hole and made of cement-based GF-177 mixture. Limiting stresses are determined in four types of stress state of the bodies: uniaxial compression and tension, Brazilian Test and hydraulic fracturing. The data of the Brazilian Test and compression of rectangular parallelepipeds and circular cylinders were used to determine limiting pressure in hydraulic fracturing. The critical stress intensity factor is found. The calculated limiting pressures are compared with the values found analytically from the Lamé solution and with the test data. The influence of the storage interval on the strength is described.

中文翻译：

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厚壁圆柱体的液压断裂

摘要

本文介绍了由水泥基GF-177混合物制成的带圆孔的厚壁圆筒的水力压裂的实验研究。极限应力是根据四种应力状态确定的：单轴压缩和拉伸，巴西试验和水力压裂。巴西测试的数据以及长方体和圆柱体的压缩率用于确定水力压裂的极限压力。找到了临界应力强度因子。将计算出的极限压力与通过Lamé溶液解析得出的值以及测试数据进行比较。描述了存储间隔对强度的影响。