CN114486457A - 一种对松散破碎、节理裂隙发育岩石取芯制样用加固溶液及取芯制样方法 - Google Patents
一种对松散破碎、节理裂隙发育岩石取芯制样用加固溶液及取芯制样方法 Download PDFInfo
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Abstract
本发明公开了一种对松散破碎、节理裂隙发育岩石取芯制样用加固溶液及取芯制样方法，本发明所述加固溶液是利用丙烯酸树脂和有机溶液配制而成。通过利用加固溶液对破碎松散岩石进行浸泡渗透，制成试件后再利用有机溶剂浸泡除去丙烯酸树脂，制成标准试件，极大提升了节理裂隙发育岩石的取芯成功率，且制成试件的物理、力学性质与原岩基本无差别。
Description
技术领域
本发明涉及一种对松散破碎、节理裂隙发育岩石取芯制样用加固溶液及取芯制样方法。
背景技术
为了检测岩石样本的性能，需要将岩石样本按照《工程岩体试验方法标准》(GBT50266-2013)的方法将岩石样本制成标准件，方能进行单轴抗压强度试验、单轴压缩变形试验、三轴压缩强度试验等。
对于岩质较破碎松散、节理裂隙发育的岩石样本而言，在制备标准件过程中极易出现开裂、破碎，大大降低制样成功率。
发明内容
针对现有技术的不足，本发明提供了一种对松散破碎、节理裂隙发育岩石进行加固的溶液，该加固溶液能够快速渗透到岩石的节理裂隙中，提高岩石的强度，实现加固的作用，便于其进行制样，提高了制样的成功率。
本发明所采用的加固溶液是由丙烯酸树脂和有机溶剂混合而成。其中优选的有机溶剂为丙酮。
优选地，本发明所述加固溶液中丙烯酸树脂和丙酮的质量比为4:1。
本发明还提供了利用该加固溶液进行取芯制样的方法，具体步骤如下：
1)配制所述加固溶液；
2)然后将松散破碎、节理裂隙发育岩石浸泡在所述加固溶液中，以使得加固溶液充分渗入节理裂隙中；浸泡结束后取出，并室温放置以使得丙酮充分挥发，得到加固岩石；
3)将加固岩石进行切割、钻芯，制成岩石样芯；
4)将岩石样芯用有机溶剂浸泡以除去岩石节理裂隙中的丙烯酸树脂，然后在室温放置，以除去试样中丙酮，得到标准试件。
其中优选地，步骤2)所述浸泡时间为48h。
其中优选地，步骤2)所述松散破碎、节理裂隙发育岩石为白云岩。
其中优选地，步骤4)所述有机溶剂为丙酮。
其中优选地，步骤4)所述浸泡时间为48h。
与现有技术相比，本发明具有以下有益效果：
本发明提供了一种用于对节理裂隙岩样进行加固的加固溶液，其能够避免岩样在制备标准试件过程中的破碎等问题，提高了制样的成功率。同时本发明所制试件的物理、力学性质与原岩基本无差别。
附图说明
图1为未经加固处理的白云岩样本制备的标准试件；
图2为白云岩样本未经加固处理进行钻芯后白云岩样的形貌特征；
图3为白云岩样本经过加固处理进行钻芯后白云岩样的形貌特征；
图4为本发明实施例1所制备的白云岩标准试件。
具体实施方式
下面结合具体实施例对本发明作进一步说明。
实施例1
一种对松散破碎、节理裂隙发育岩石的取芯制样方法，步骤如下：
1)配制加固溶液，所述加固溶液是由丙烯酸树脂和丙酮按质量比为4:1混合而成；
3)然后将白云岩样本在所述加固溶液中浸泡48h，以使得加固溶液充分渗入节理裂隙中；浸泡结束后取出，并室温放置48h以使得丙酮充分挥发，得到加固岩石；
3)将加固岩石按照《工程岩体试验方法标准》(GBT50266-2013)的方法进行切割、钻芯，制成岩石样芯，取芯后的加固岩石如图3所示；
4)将岩石样芯用丙酮浸泡48h,以除去岩石节理裂隙中的丙烯酸树脂，然后在室温放置48h，以除去试样中丙酮，得到标准试件，如图4所示。
对所制备的标准试件性能进行检测，具体如表1所示。
表1实施例岩石试件与原状岩石所取试件物理、力学性质指标
经过对比，未经加固处理的白云岩样本直接利用《工程岩体试验方法标准》(GBT50266-2013)的方法进行切割、钻芯，制成岩石样芯(及标准试件，如图1所示)，取芯后的加固岩石样本如图2所示。可见，未经加固处理容易使得白云岩样本在制样过程中破碎，降低了标准试件成功率。
需要说明的是，以上列举的仅是本发明的若干个具体实施例，显然本发明不仅仅限于以上实施例，还可以有其他变形。本领域的技术人员从本发明公开内容直接导出或间接引申的所有变形，均应认为是本发明的保护范围。
Claims (8)
1.一种对松散破碎、节理裂隙发育岩石取芯制样用加固溶液，其特征在于，所述加固溶液是利用丙烯酸树脂和有机溶剂混合而成。
2.根据权利要求1所述对松散破碎、节理裂隙发育岩石取芯制样用加固溶液，其特征在于，所述有机溶剂为丙酮。
3.根据权利要求2所述对松散破碎、节理裂隙发育岩石取芯制样用加固溶液，其特征在于，所述加固溶液是由质量比为4:1的丙烯酸树脂和丙酮混合而成。
4.一种对松散破碎、节理裂隙发育岩石的取芯制样方法，其特征在于，步骤如下：
1)配制加固溶液，所述加固溶液为权利要求1-3任意一项所述的加固溶液；
2)然后将松散破碎、节理裂隙发育岩石浸泡在所述加固溶液中，以使得加固溶液充分渗入节理裂隙中；浸泡结束后取出，并室温放置以使得丙酮充分挥发，得到加固岩石；
3)将加固岩石进行切割、钻芯，制成岩石样芯；
4)将岩石样芯用有机溶剂浸泡以除去岩石节理裂隙中的丙烯酸树脂，然后在室温放置，以除去试样中丙酮，得到标准试件。
5.根据权利要求1所述对松散破碎、节理裂隙发育岩石的取芯制样方法，其特征在于，步骤2)所述浸泡时间为48h。
6.根据权利要求1所述对松散破碎、节理裂隙发育岩石的取芯制样方法，其特征在于，步骤2)所述松散破碎、节理裂隙发育岩石为白云岩。
7.根据权利要求1所述对松散破碎、节理裂隙发育岩石的取芯制样方法，其特征在于，步骤4)所述有机溶剂为丙酮。
8.根据权利要求1所述对松散破碎、节理裂隙发育岩石的取芯制样方法，其特征在于，步骤4)所述浸泡时间为48h。
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| CN105352786A (zh) * | 2015-11-13 | 2016-02-24 | 西安建筑科技大学 | 一种破碎岩石试样制作及其加载方法 |
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| 栗荣贺: "简述文物保护用丙烯酸树脂Paraloid B-72", 《辽宁省博物馆馆刊》 * |
| 赵慧群: "丙烯酸树脂B72丙酮溶液在陶瓷文物修复中应用比例研究", 《文物保护与考古科学》 * |
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