含水率是土体重要物理参数之一, 在不同土体中, 含水率对其物性及力学特性有不同程度的影响效果。面对日益复杂的国际局势, 战场活动及保障性研究尤为重要, 岩土体要素作为战场环境中的重要一环, 需加强探索其在实战中的作用; 本文以某训练场为例, 通过采集不同土体类型样品, 在原位试验的基础上, 对实验室结果做出数理统计和分析, 经研究表明: ①孔隙比较低、基质较为密实的土体中, 含水率对其产生的时效性效果有所延迟, 影响性差, 随着含水率增加, 土体粘聚力增加, 而内摩擦角减小, 对黏性土来说, 含水率有助于抗剪性, 对无黏性土, 含水率降低其抗剪性; ②不同土体对含水率的敏感度差异明显, 在较密实、坚硬的土体区, 含水率变化较为缓慢, 对最终军事相关活动影响较小, 对比区内三种土体, 敏感度强弱依次为粉土>砾砂>碎 (卵) 石; ③区内模拟雨前雨后演训环境下, 土体承载力验证及抗打击区同类型炮弹毁伤效果评测, 结果与土体含水率相关性相吻合, 说明在同等环境下, 随着不同含水率变化, 对土体本身力学性质的影响。④含水率对岩土体力学参数影响很大, 其是战场环境要素分析的重要组成部分, 研究结果可以指导相关演训活动的部设。

Water content is one of the important physical parameters of soil. In different soils, water content has different effects on their physical and mechanical properties. In the face of the increasingly complex international situation, the study of battlefield activities and support is particularly important. As an important part of the battlefield environment, rock and soil mass elements need to be explored in actual combat. Taking a training ground as an example, this paper collects samples of different soil types and makes mathematical statistics and analysis of laboratory results on the basis of in-situ tests. The research shows that: (1) In soils with relatively low porosity and dense matrix, the moisture content has a delayed effect on the timeliness. With the increase of moisture content, the cohesiveness of the soil increases, while the internal friction Angle decreases. For viscous soil, the moisture content contributes to the shear resistance, while for non-cohesive soil, the moisture content decreases the shear resistance. (2) The sensitivity of different soils to water content is obviously different. In the dense and hard soil area, water content changes slowly and has little influence on the final military-related activities. Compared with the three soils in the area, the sensitivity is in the order of silt > gravel sand > crushed (pebble) stone; (3) In the simulated pre-rain and post-rain training environment, the bearing capacity of soil mass and the damage effect evaluation of the same type of shell in the anti-strike area are consistent with the correlation of soil water content, indicating that under the same environment, the change of different water content will affect the mechanical properties of soil mass itself. (4) Moisture content has a great influence on geotechnical physical parameters, which is an important part of the analysis of battlefield environmental factors, and the research results can guide the design of relevant exercises and training activities.