DRILL CORE SAMPLE STORAGE CONTAINER WITH STAKE CROSS-REFERENCE TO RELATED PATENT APPLICATION This application claims the benefit of Korean Patent Application No. 10-2009-0107978, filed on November, 10, 2009, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drill core sample storage container with a stake, and more particularly, to a drill core sample storage container with a stake, comprising: a box with walls; a partition for dividing the inside space of the box into storage compartments for accommodating drill core samples; and a stake for elastically securing each of the drill core samples received in the box, wherein a pair of the opposite walls have a plurality of partition receiving grooves to receive the partition in the box and to adjust the partition to permit the sizing of each of the storage compartments to be changed to accommodate different sized drill core samples. Therefore, unlike the conventional art, the present invention prevents the 0 drill core samples from being shaken and damaged in the box when the drill core sample storage container needs to be moved or the drill core samples need to be stored for a long time, thereby increasing storage safety. Further, in the conventional art, since the partitions are fixed in a single predetermined size not movable in the box which makes the storage compartments, a plurality of boxes with 5 different sized storage compartments are needed, increasing the costs for 1 investigation and testing. However, in the present invention, since the partitions are adjustably fitted into the box to make different sized storage compartments according to the different sized drill core samples, the costs are reduced. In addition, the stake supports each of the drill core samples so as to be secured in the box. When the drill core samples which are different in length are stored in a standardized box, the samples are elastically secured in the box by the stakes and therefore the safety of the drill core samples is secured. 2. Description of the Related Art Generally, when a borehole is drilled in the ground, a ground sampling process of soil and rock, among others, is necessarily and in advance performed to determine the parameters required for a construction design. This drilling investigation must be performed to get various geological stratum data, such as physical and chemical properties and stratified earth structures, among others, of the ground upon which construction of a structure will take place. Considering the present state of the ground drilling in the Republic of Korea, a lot of money is budgeted to safely store the collected samples for observation. However, since a conventional separate steel split is used, an observer cannot touch or move the rock core samples which may be collected from an efflorescent rocky area or a very discontinuous fault area and therefore easily broken when the samples are held in a core storage box. To make the geologic column, when an observer observes such samples R by using a core sample storage container as shown in FIG. 1, the observer can observe the samples R only within about a 160 degree area of the top of each sample R, which is not covered by each partition 2 dividing a box 1 into storage compartments 3. In other words, since it is impossible 5 to turn over the samples R for observation, it is difficult to observe about a 200 2 degree area of the bottom of each sample R. Therefore, the results of the observation are deduced from the observer's approximate assumption and thus the reliability thereof may be limited. Moreover, the samples R are moved to be placed in the storage compartments 3 of the box 1, so that the samples R are stored in the box. FIG. 1 illustrates the rock samples R which have been placed into the box 1 for storage. During the process for a worker/observer to move the samples R into the storage compartments 3, not only the worker/observer's carefulness or effort is of paramount importance but also the samples R are likely to be deformed in most cases. Consequently, it would be impossible to accurately evaluate the properties of the relevant geological stratum, based on the stratigraphical evaluation data using the deformed samples, and therefore the reliability of the evaluation would be decreased. As described above, in the conventional art, when collecting samples from clastic rocks, first agitation occurs in the process of collecting the samples and second agitation occurs when the samples are moved from the split to the box. Furthermore, when the box for storing the rock samples is shaken or impacted while it is transferred from the drilling field to the storage place of the rock samples, more serious agitation may occur, so that the samples are likely to be damaged. Even if o core samples are collected from homogenous rocks and thus in a good condition, a worker may cut the samples by arbitrarily applying an impact to the samples, to place the samples in the storage compartments (in a predetermined length/size) in the box. In this case, since it is difficult to distinguish the artificially cut surface from the naturally cut surface, a considerable error may occur in a Rock Quality 5 Designation (RQD) value [(sum of length of cores greater than 10cm divided by, 3 generally, 1m-standard length core obtained by N-size core boring) X 100%] or Rock Mass Rating (RMR) value, among the data to evaluate the conditions of the base rocks. SUMMARY OF THE INVENTION To solve the above problems of the conventional art, it is therefore an object of the present invention to provide to a drill core sample storage container with a stake, comprising: a box with walls; a partition for dividing the inside space of the box into storage compartments for accommodating drill core samples; and a stake for elastically securing each of the drill core samples received in the box, wherein a pair of the opposite walls have a plurality of partition receiving grooves to receive the partition in the box and to adjust the partition to permit the sizing of each of the storage compartments to be changed to accommodate different sized drill core samples. Therefore, unlike the conventional art, the present invention prevents the drill core samples from being shaken and damaged in the box when the drill core sample storage container needs to be moved or the drill core samples need to be stored for a long time, thereby increasing storage safety. Further, in the conventional art, since the partitions are fixed in a single predetermined size not movable in the box which makes the storage compartments, a plurality of boxes with different sized storage compartments are needed, increasing the costs for investigation and testing. However, in the present invention, since the partitions are adjustably fitted into the box to make different sized storage compartments according to the different sized drill core samples, the costs are reduced. It is also another object of the present invention to provide a drill core sample storage container with a stake, wherein the stake supports each of the drill core 4 samples so as to be secured in the box. Therefore, when the drill core samples which are different in length are stored in a standard box, the samples are elastically secured in the box and thus the safety of the drill core samples is secured. In accordance with an exemplary embodiment of the present invention, there is provided a drill core sample storage container with a stake to store drill core samples collected through a borehole drilled in the ground or rocks, the container comprising: a box with walls, for safely containing the drill core samples for storage and movement; a partition to be installed in the box, for dividing the inside space of the box into storage compartments, according to the different sized drill core samples; and a stake to be installed in the box, for elastically securing each of the drill core samples, according to the different drill core samples in length, and for displaying information of the each drill core sample. BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings in which: FIG. 1 is a perspective view illustrating a conventional core sample storage container; FIGS. 2 and 3 are schematic views illustrating a drill core sample storage container with a stake according to an exemplary embodiment of the present invention; and FIG. 4 is a perspective view illustrating the stake according to the exemplary embodiment of the present invention. 5 [Brief description of reference numbers of major elements] 10: box 11: wall 12: partition receiving groove 13: storage compartment 20: partition 30: stake 31: body 32: elastic member 33: support plate 34: display unit 35: opening 40: core sample storage container DETAILED DESCRIPTION OF THE INVENTION The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the invention are shown. It will be understood that words or terms used in the specification and claims shall not be interpreted as the meaning defined in commonly used dictionaries. It will be further understood that the words or terms should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the technical idea of the invention, based on the principle that an inventor may properly define the meaning of the words or terms to best explain the invention. Accordingly, while example embodiments of the present invention are capable of various modifications and alternative forms, embodiments of the present invention are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that there is no intent to limit example embodiments of the invention to the particular forms disclosed, but on the contrary, example embodiments of the invention are to cover all modifications, equivalents, 5 and alternatives falling within the scope of the invention. 6 To achieve the aforementioned objects, a drill core sample storage container with a stake according to the present invention is characterized by: a box with walls, for safely containing drill core samples for storage and movement; a partition to be installed in the box, for dividing the inside space of the box into storage compartments, according to the different sized drill core samples; and a stake to be installed in the box, for elastically securing each of the drill core samples, according to the different drill core samples in length and for displaying information of the each drill core sample. FIGS. 2 and 3 are schematic views illustrating a drill core sample storage container 40 with a stake 30 according to an exemplary embodiment of the present invention, and FIG. 4 is a perspective view illustrating the stake 30 according to the exemplary embodiment of the present invention. As illustrated in FIGS. 2 and 3, the drill core sample storage container 40 with a stake comprises: a box 10, a partition 20 and a stick 30, to store core samples R collected through a borehole drilled in the ground or rocks. The box 10 receiving the core samples R securely stores the core samples R, to be safely and easily moved to a research institute or a place needing the core samples R or to be safely stored for a long time. The box 10 comprises: a rectangular support base (not shown); and walls 11 to be installed vertically, along the perimeter of the support base (i.e., at four directions of the support base), for protecting the core samples R placed on the support base. The walls 11 are integrally connected to one another at each end of each wall 11, to be formed in a single body. One pair of the opposite walls 11 includes partition receiving grooves 12. 5 The partitions 20 to be installed inside the box 10 are inserted into the partition 7 receiving grooves 12. A number of the partition receiving grooves 12 are formed to be spaced apart from one another, at predetermined intervals, to permit each of the partitions 4-20 according to the size of each of the core samples R. The walls 11 are composed of a transparent material. The one pair of the walls 11 is vertically attachable to/detachable from the box 10, to easily place the core samples R which are longer than the box 10 in length into the box 10. Guide grooves 15 are formed on the other pair of the walls 11 which are to contact with the one pair of the walls 11. The guide grooves 15 permit the one pair of the walls 11 to be attached/detached. The partition receiving grooves 12 may be formed in one pair or two pairs of the opposite walls 11. The partition receiving grooves 12 may vary according to the size of the core samples R and the length of the partitions 20. The partitions 20 are inserted into the partition receiving grooves 12 formed on the insides of the opposite walls 11, thereby forming different sized storage compartments 13 to be changed to accommodate the different sized core samples R in the box 10. Referring to FIGS. 2 and 3, each of the partitions 20 is in a rectangular form. Both opposite ends of the each partition 20 are respectively inserted in the opposite partition receiving grooves 12 of the box 10, thereby dividing the inside space of the a box 10 into the storage compartments 13 for accommodating the drill core samples R. The partitions 20 are adjustably inserted into the partition receiving grooves 12, according to the different size (circumference) of each of the core samples R. The partitions 20 adjusted in this manner secure the core samples R in the box 10. 5 Therefore, the core samples R are prevented from being damaged during movement 8 and long-term storage. As illustrated in FIG. 4, the stake 30 is positioned in the storage compartment 13 of the box 10. When the core samples R which are different in length are stored in the box 10, the stake 30 secures each of the core samples R by an elastic force and displays information of the each core sample R. The stake 30 comprises: a body 31, an elastic member 32, and support plates 33. Since the collected core samples R have different dimensions (i.e., since some are big but some are small in circumference, and some are long but some are short in length), the stake 30 is needed. The body 31 is formed in a rectangular block. A display unit 34 for indicating the information of the core samples R is positioned on one side of the body 31. A rubber plate (not shown) for preventing a friction between the body 31 and the inside of the box 10 is attached to the other side of the body 31 which contacts with the inside of the box 10, that is, the opposite side to the side of the body 31 on which the display unit 34 is positioned. The information of the core samples R includes the place, date, time of collecting each of the core samples R through the borehole, and the size (circumstance, length, and the like) of the each core sample R. Openings 35 for receiving the elastic member 32 inside the body 31 are each 0 formed at both sides of the body 31. The elastic member 32 to be positioned within the body 31 through the openings 35 is made of the elastic material member, such as a spring or sponge, among others, to elastically support the core sample R. When the elastic member 32 is pressed, it is included in the openings 35 of 5 the body 31. Thus, the whole length of the elastic member 32, i.e., the length 9 between the two support plates 33 (including the length of the body 31), is minimized. Each of the support plate 33 is positioned at each of the ends of the elastic member 32. The support plates may contact with the core samples R so that the core samples R are supported, they may contact with the core sample R and the wall 11 so that the core sample R and the wall 11 are supported, or they may contact with the partitions 20 so that the partitions 20 are supported. When the elastic member 32 is pressed, each of the support plates 33 contacts with each of the sides of the body 31 where each of the openings 35 is formed, to cover the open side of the each opening 35. As shown in FIGS. 2 and 3, the stake 30 is installed lengthwise in relation to the attached drawing (to support the partitions 20,) or it is installed widthwise (to support the core samples R and the wall 11), according to the different size of each of the core samples R. As described above, the drill core sample storage container with a stake according to the present invention comprises: a box with walls; a partition for dividing the inside space of the box into storage compartments for accommodating drill core samples; and a stake for elastically securing each of the drill core samples received in the box, wherein a pair of the opposite walls have a plurality of partition receiving o grooves to receive the partition in the box and to adjust the partition to permit the sizing of each of the storage compartments to be changed to accommodate different sized drill core samples. Therefore, unlike the conventional art, the present invention prevents the drill core samples from being shaken and damaged in the box when the drill core sample storage container needs to be moved or the drill core 5 samples need to be stored for a long time, thereby increasing storage safety. 10 Further, in the conventional art, since the partitions are fixed in a single predetermined size not movable in the box which makes the storage compartments, a plurality of boxes with different sized storage compartments are needed, increasing the costs for investigation and testing. However, in the present invention, since the partitions are adjustably fitted into the box to make different sized storage compartments according to the different sized drill core samples, the costs are reduced. In addition, in the drill core sample storage container with a stake, the stake supports each of the drill core samples so as to be secured in the box. Therefore, when the drill core samples which are different in length are stored in a standard box, the samples are elastically secured in the box and thus the safety of the drill core samples is secured. While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of 5 ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims. 11