土中一点的大、小主应力分别为，已接近极限平衡（破坏）状态，则当(  )时，可能导致该点达到极限平衡状态。

A、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/ecd636ee-54f6-425a-8b33-a12e9660cc8a.gif"title="ex_1285553150316_0.gif" alt="ex_1285553150316_0.gif"/><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">不变<span lang="EN-US">,</span>加大<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/17bfbc01-ba62-4d4c-ab49-00dff1c2e509.gif"title="ex_1285553171260_0.gif" alt="ex_1285553171260_0.gif"/></span>

B、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/604022ca-e6a2-4f67-8e94-9bfad2159fb9.gif"title="ex_1285553150316_0.gif" alt="ex_1285553150316_0.gif"/><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-bidi-font-family: \'Times New Roman\'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">不变<span lang="EN-US">,</span>减小<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/5afad467-5c54-4af6-9c7c-cee6b95061c3.gif"title="ex_1285553171260_0.gif" alt="ex_1285553171260_0.gif"/></span>

C、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/db6ca3fe-a4cd-4b00-9139-250d85211b16.gif"title="ex_1285553171260_0.gif" alt="ex_1285553171260_0.gif"/><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-bidi-font-family: ">不变，减小<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/75232553-91e6-4c3e-8d53-29fa48503093.gif"title="ex_1285553150316_0.gif" alt="ex_1285553150316_0.gif"/></span>

D、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/a9ae86dc-85a7-466e-9d5f-56b5d405505a.gif"title="ex_1285553150316_0.gif" alt="ex_1285553150316_0.gif"/>、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/6fd3ab94-5993-4812-b57d-3743bcd6b446.gif"title="ex_1285553171260_0.gif" alt="ex_1285553171260_0.gif"/><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-bidi-font-family: ">以同样的量值增加</span>

A、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/ecd636ee-54f6-425a-8b33-a12e9660cc8a.gif"title="ex_1285553150316_0.gif" alt="ex_1285553150316_0.gif"/><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">不变<span lang="EN-US">,</span>加大<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/17bfbc01-ba62-4d4c-ab49-00dff1c2e509.gif"title="ex_1285553171260_0.gif" alt="ex_1285553171260_0.gif"/></span>

B、<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/604022ca-e6a2-4f67-8e94-9bfad2159fb9.gif"title="ex_1285553150316_0.gif" alt="ex_1285553150316_0.gif"/><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">不变<span lang="EN-US">,</span>减小<IMG src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/staticQuestionImg/5afad467-5c54-4af6-9c7c-cee6b95061c3.gif"title="ex_1285553171260_0.gif" alt="ex_1285553171260_0.gif"/></span>